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Search for "composite" in Full Text gives 481 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Facile synthesis of carbon nanotube-supported NiO//Fe2O3 for all-solid-state supercapacitors

  • Shengming Zhang,
  • Xuhui Wang,
  • Yan Li,
  • Xuemei Mu,
  • Yaxiong Zhang,
  • Jingwei Du,
  • Guo Liu,
  • Xiaohui Hua,
  • Yingzhuo Sheng,
  • Erqing Xie and
  • Zhenxing Zhang

Beilstein J. Nanotechnol. 2019, 10, 1923–1932, doi:10.3762/bjnano.10.188

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  • . deposited iron oxide on CNTs by atomic layer deposition (ALD) and the obtained CNTs@Fe2O3 presented a specific capacitance of 580.6 F·g−1 at 5 A·g−1 [21]. Zhang et al. used magnetron sputtering to prepare sandwich-like CNT@Fe2O3@C structures, and the composite exhibited a specific capacitance of 787.5 F·g−1
  • to C–O and Ni–O, respectively [36]. The XPS results strongly support XRD and Raman results and confirm that NiO formed on the CC-CNT substrate, suggesting the universality of this aqueous reduction method to prepare CNT-based metal oxide composite. The electrochemical performance of the CC-CNT@NiO
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Published 23 Sep 2019

Prestress-loading effect on the current–voltage characteristics of a piezoelectric p–n junction together with the corresponding mechanical tuning laws

  • Wanli Yang,
  • Shuaiqi Fan,
  • Yuxing Liang and
  • Yuantai Hu

Beilstein J. Nanotechnol. 2019, 10, 1833–1843, doi:10.3762/bjnano.10.178

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  • been investigated by Dai et al. [24] and Yang and co-workers [25]. The mechanical behavior of composite fibers with piezoelectric dielectrics and non-piezoelectric semiconductors have also been studied by Cheng et al. [26] and Luo and co-workers [27]. For piezoelectric p–n junctions, it becomes
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Published 06 Sep 2019

Nanoarchitectonics meets cell surface engineering: shape recognition of human cells by halloysite-doped silica cell imprints

  • Elvira Rozhina,
  • Ilnur Ishmukhametov,
  • Svetlana Batasheva,
  • Farida Akhatova and
  • Rawil Fakhrullin

Beilstein J. Nanotechnol. 2019, 10, 1818–1825, doi:10.3762/bjnano.10.176

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  • eukaryotic cells [3]. In particular, nanostructured composite shells (both hard and soft) deposited onto live cells have been shown to render the cells with novel mechanic and chemical functionalities [4][5][6]. In line with the concepts of nanoarchitectonics, cell surface engineering relies on the self
  • of various functional composite materials [26]. The anisotropic shape (hollow tubules having lengths from 300 nm to 1–2 µm, 50–70 nm diameter, and 20 nm lumen) and surface chemistry (outer surface of SiO2, inner surface of Al2O3) make these nanotubes ideal carriers for novel catalysts, polymer
  • comparable sizes such as yeast cells. Results and Discussion Our experimental strategy is schematically depicted in Figure 1. Following the nanoarchitectonics paradigm [35], we produced composite inorganic shells around human HeLa cells, using a polyelectrolyte nanolayer as a means to facilitate the
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Published 04 Sep 2019

Growth dynamics and light scattering of gold nanoparticles in situ synthesized at high concentration in thin polymer films

  • Corentin Guyot,
  • Philippe Vandestrick,
  • Ingrid Marenne,
  • Olivier Deparis and
  • Michel Voué

Beilstein J. Nanotechnol. 2019, 10, 1768–1777, doi:10.3762/bjnano.10.172

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  • in the composite less than 1%, the effect of doping is usually not detected experimentally using MG-EMA when the optical measurements are carried out out-of-resonance. This effect has been modeled in Supporting Information File Supporting Information File 1. Moreover, going from standard ellipsometry
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Published 23 Aug 2019

TiO2/GO-coated functional separator to suppress polysulfide migration in lithium–sulfur batteries

  • Ning Liu,
  • Lu Wang,
  • Taizhe Tan,
  • Yan Zhao and
  • Yongguang Zhang

Beilstein J. Nanotechnol. 2019, 10, 1726–1736, doi:10.3762/bjnano.10.168

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  • but suffer from poor cyclic performance due to the dissolution of intermediate polysulfides. Herein, a lightweight nanoporous TiO2 and graphene oxide (GO) composite is prepared and utilized as an interlayer between a Li anode and a sulfur cathode to suppress the polysulfide migration and improve the
  • capacity of 843.4 mAh g−1, which corresponds to a capacity retention of 76.48% at a current rate of 0.2 C. Moreover, the Li/S battery with the TiO2/GO-coated separator showed superior cyclic performance and excellent rate capability, which shows the promise of the TiO2/GO composite in next-generation Li/S
  • batteries. Keywords: dealloying; functional separator; lithium–sulfur batteries; TiO2/GO composite; Introduction The portability of handheld electronic products and successful realization of next-generation electric vehicles urgently require advanced energy storage devices with higher storage capacity and
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Published 19 Aug 2019

High-temperature resistive gas sensors based on ZnO/SiC nanocomposites

  • Vadim B. Platonov,
  • Marina N. Rumyantseva,
  • Alexander S. Frolov,
  • Alexey D. Yapryntsev and
  • Alexander M. Gaskov

Beilstein J. Nanotechnol. 2019, 10, 1537–1547, doi:10.3762/bjnano.10.151

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  • composite nanomaterials using highly dispersed silicon carbide (SiC). The unique physical and chemical properties of silicon carbide – wide band gap (Eg = 2.4–3.2 eV), high Debye temperature 1400 K, high thermal conductivity of 4.9 W/cm·K, low reactivity to oxygen and water vapor – ensure the stability of
  • composite materials with respect to temperature, radiation, chemical and mechanical effects [6][7]. It has been shown that in MO/SiC nanocomposites containing metal oxide (MO) and nanostructured SiC, the presence of silicon carbide inhibits the growth of MO crystallites at high temperatures [8]. The
  • difference in the adsorption properties, reactivity and electrical behavior of semiconductor oxides and silicon carbide, as well as possible chemical interactions on their interface, cause changes in the sensor performance of composite materials. The SiC-based materials in the form of planar Pt/MO/SiC
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Published 26 Jul 2019

Flexible freestanding MoS2-based composite paper for energy conversion and storage

  • Florian Zoller,
  • Jan Luxa,
  • Thomas Bein,
  • Dina Fattakhova-Rohlfing,
  • Daniel Bouša and
  • Zdeněk Sofer

Beilstein J. Nanotechnol. 2019, 10, 1488–1496, doi:10.3762/bjnano.10.147

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  • flexible MoS2-based composite paper by high-energy shear force milling and simple vacuum filtration. This composite material combines high flexibility, mechanical strength and good chemical stability. Chronopotentiometric charge–discharge measurements were used to determine the capacitance of our paper
  • and delivers specific capacity of 740 mA·h·g−1 at a current density of 0.1 A·g−1. After 40 cycles at this current density the material still reached a capacity retention of 91%. Our findings show that this composite material could find application in electrochemical energy storage and generation
  • active material and the current collector upon bending deformation [10]. However, there are promising reports on freestanding MoS2/carbonaceous composite electrodes which have demonstrated attractive electrochemical performance [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Beside
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Published 24 Jul 2019

Magnetic segregation effect in liquid crystals doped with carbon nanotubes

  • Danil A. Petrov,
  • Pavel K. Skokov,
  • Alexander N. Zakhlevnykh and
  • Dmitriy V. Makarov

Beilstein J. Nanotechnol. 2019, 10, 1464–1474, doi:10.3762/bjnano.10.145

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  • intensity of the impurity subsystem. The optical phase lag between ordinary and extraordinary rays of light transmitted through a layer of a liquid crystal composite is calculated. The possibility of changing the nature of the Fréedericksz transition from second order to first order is shown. This
  • composite materials capable of spontaneous ordering are interesting due to the fact that their properties are determined by the interactions between the embedded nanoparticles and the carrier matrix. The properties of LC mixtures with nanoparticles substantially depend on the material of the particles
  • , their shape, size, and concentration. Anisometric particles are oriented in the LC matrix, which leads to significant changes in the electro- and magneto-optical response of the composite material. Nanoparticles placed in an LC enhance many physical properties, such as susceptibility to external fields
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Published 22 Jul 2019

Selective gas detection using Mn3O4/WO3 composites as a sensing layer

  • Yongjiao Sun,
  • Zhichao Yu,
  • Wenda Wang,
  • Pengwei Li,
  • Gang Li,
  • Wendong Zhang,
  • Lin Chen,
  • Serge Zhuivkov and
  • Jie Hu

Beilstein J. Nanotechnol. 2019, 10, 1423–1433, doi:10.3762/bjnano.10.140

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  • Abstract Pure WO3 sensors and Mn3O4/WO3 composite sensors with different Mn concentrations (1 atom %, 3 atom % and 5 atom %) were successfully prepared through a facile hydrothermal method. As gas sensing materials, their sensing performance at different temperatures was systematically investigated for gas
  • between the two metal oxides. The sensor based on the Mn3O4/WO3 composite with 3 atom % Mn showed a high selective response to hydrogen sulfide (H2S), ammonia (NH3) and carbon monoxide (CO) at working temperatures of 90 °C, 150 °C and 210 °C, respectively. The demonstrated superior selectivity opens the
  • Cr2O3-functionalzied WO3 nanorod sensor had better selectivity toward ethanol than that of pristine WO3 [11]. From previous reports, it is almost certainly clear that catalytic Mn3O4 attached to WO3 should promote the gas sensing reactions, and the Mn3O4/WO3 composite is expected to be a more effective
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Published 17 Jul 2019

BiOCl/TiO2/diatomite composites with enhanced visible-light photocatalytic activity for the degradation of rhodamine B

  • Minlin Ao,
  • Kun Liu,
  • Xuekun Tang,
  • Zishun Li,
  • Qian Peng and
  • Jing Huang

Beilstein J. Nanotechnol. 2019, 10, 1412–1422, doi:10.3762/bjnano.10.139

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  • Abstract A BiOCl/TiO2/diatomite (BTD) composite was synthesized via a modified sol–gel method and precipitation/calcination method for application as a photocatalyst and shows promise for degradation of organic pollutants in wastewater upon visible-light irradiation. In the composite, diatomite was used as
  • degradation product and visible light (λ > 400 nm) was used as the light source for the evaluation of the photocatalytic properties of the prepared BTD composite. The results show that the catalytic performance of the BTD composite under visible-light irradiation is much higher than that of TiO2 or BiOCl
  • alone. When the molar ratio of BiOCl to TiO2 is 1:1 and the calcination temperature is 400 °C, the composite was found to exhibit the best catalytic effect. Through the study of the photocatalytic mechanism, it is shown that the strong visible-light photocatalytic activity of the BTD composite results
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Published 16 Jul 2019

Highly ordered mesoporous silica film nanocomposites containing gold nanoparticles for the catalytic reduction of 4-nitrophenol

  • Mohamad Azani Jalani,
  • Leny Yuliati,
  • Siew Ling Lee and
  • Hendrik O. Lintang

Beilstein J. Nanotechnol. 2019, 10, 1368–1379, doi:10.3762/bjnano.10.135

Graphical Abstract
  • -nitrophenol at room temperature, the highly ordered structure of the as-fabricated silica/gold nanoparticle thin film composite after thermal hydrogen reduction at 210 °C resulted in an improved catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol compared to the material calcined at 250 °C
  • reduction at 210 °C, the composite will start to decompose its organic components in [Au3Pz3]C10TEG and then form porous structures in mesoporous silica with high quality. It should be noted that [AuNPs]red/silicahex at 230 °C showed a significant decrease in the ordered structure, suggesting the
  • ). Since AuNPs were the active site in this reaction, the increase in the catalytic activity of the film composite [AuNPs]red/silicahex at 210 °C is strongly suggested by the small particle size of the as-synthesized AuNPs in high-quality mesostructured silica. Since the NaBH4 concentration largely
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Published 05 Jul 2019

Construction of a 0D/1D composite based on Au nanoparticles/CuBi2O4 microrods for efficient visible-light-driven photocatalytic activity

  • Weilong Shi,
  • Mingyang Li,
  • Hongji Ren,
  • Feng Guo,
  • Xiliu Huang,
  • Yu Shi and
  • Yubin Tang

Beilstein J. Nanotechnol. 2019, 10, 1360–1367, doi:10.3762/bjnano.10.134

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  • , Zhenjiang, Jiangsu 212018, PR China School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, PR China 10.3762/bjnano.10.134 Abstract Photocatalysis is considered to be a promising technique for the degradation of organic pollutants. Herein, a 0D/1D composite
  • composites with 2.5 wt % Au NPs was 4.76 times as high as that of bare CBO microrods. Additionally, the 0D/1D Au/CBO composite also exhibited ideal stability. The significant improvement of the photocatalytic performance could be attributed to the improved light harvesting and increased specific surface area
  • , enhancing photoresponse and providing more active sites. Our work shows a possible design of efficient photocatalysts for environmental remediation. Keywords: Au nanoparticles; 0D/1D composite; CuBi2O4 microrods; photocatalysis; photocatalytic degradation; Introduction Heterogeneous semiconductor
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Published 04 Jul 2019

Nanoscale spatial mapping of mechanical properties through dynamic atomic force microscopy

  • Zahra Abooalizadeh,
  • Leszek Josef Sudak and
  • Philip Egberts

Beilstein J. Nanotechnol. 2019, 10, 1332–1347, doi:10.3762/bjnano.10.132

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  • models of failure, specifically when the failure mode occurs at a nanoscale interface of two different phases, such as those in composite materials [8][9]. Therefore, the study of nanoscale mechanical properties is critical for the development of next-generation materials, advanced mechanical systems
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Published 03 Jul 2019

Multicomponent bionanocomposites based on clay nanoarchitectures for electrochemical devices

  • Giulia Lo Dico,
  • Bernd Wicklein,
  • Lorenzo Lisuzzo,
  • Giuseppe Lazzara,
  • Pilar Aranda and
  • Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2019, 10, 1303–1315, doi:10.3762/bjnano.10.129

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  • (Pangel® S9) under ultrasound irradiation. The incorporation of these components into a polymeric CHI matrix results in composite materials that can be processed either as films or as foams. In agreement with previous works [25][26], the ultrasound treatment of this type of sepiolite in aqueous medium
  • Young’s modulus of the films (Figure 4A) increases with the clay nanofiller content from 5 GPa for pure chitosan up to 11 GPa for the sample Film-4, which contains 40% of clay components. These findings are in good agreement with the mechanical properties of similar composite materials based on sepiolite
  • immobilized in mesopores of Al2O3 membranes (10–30 mM) [63], sol–gel-derived composite films (14 mM) [64], and similar devices based on graphene and carbon nanotubes (4–15 mM) [65][66]. The low Km value is indicative of an excellent performance attributed to strong substrate binding and high enzymatic
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Published 25 Jun 2019

A silver-nanoparticle/cellulose-nanofiber composite as a highly effective substrate for surface-enhanced Raman spectroscopy

  • Yongxin Lu,
  • Yan Luo,
  • Zehao Lin and
  • Jianguo Huang

Beilstein J. Nanotechnol. 2019, 10, 1270–1279, doi:10.3762/bjnano.10.126

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  • . Results and Discussion Characterization of the Ag-NP/cellulose-NF composite The silver-nanoparticle/cellulose-nanofiber SERS substrates were fabricated by deposition of silver nanoparticles onto the surfaces of the cellulose nanofibers of ordinary laboratory filter paper by the silver mirror reaction. As
  • , respectively. The field-emission scanning electron microscopy (FE-SEM) images of the Ag-NP/cellulose-NF composite sheets in Figure 1 show that the surfaces of the cellulose fibers are decorated with silver particles. The comparison with SEM images of bare filter paper (Supporting Information File 1, Figure S1
  • good agreement with the afore-mentioned characterizations. SERS performance of the Ag-NP/cellulose-NF substrate The performance of the Ag-NP/cellulose-NF composite sheets as SERS substrates was investigated by using Rhodamine 6G (R6G, inset of Figure 4a) as probe molecule. Neither the filter paper
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Published 24 Jun 2019

Green fabrication of lanthanide-doped hydroxide-based phosphors: Y(OH)3:Eu3+ nanoparticles for white light generation

  • Tugrul Guner,
  • Anilcan Kus,
  • Mehmet Ozcan,
  • Aziz Genc,
  • Hasan Sahin and
  • Mustafa M. Demir

Beilstein J. Nanotechnol. 2019, 10, 1200–1210, doi:10.3762/bjnano.10.119

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  • optoelectronic properties. As an application, these fabricated red phosphors were integrated into a PDMS/YAG:Ce3+ composite and used to generate white light. The resulting white light showed a remarkable improvement (≈24%) in terms of luminous efficiency, a slight reduction of CCT (from 3900 to 3600 K), and an
  • mold was put into a vacuum oven for 30 min for solvent evaporation. Finally, this mold was cured and cross-linked at 100 °C for 30 min and then the free-standing composite film was removed from the mold. Computational details To investigate the effect of europium dopants on the structural and
  • of the spectrum. They are far from the ideal white light and require more blue color to shift the resulting color spectrum towards white. Therefore, integration of Y(OH)3:20% Eu3+ into the PDMS/YAG:Ce3+ composite is just part of the process towards obtaining high quality white light generation. It is
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Published 07 Jun 2019

Porous N- and S-doped carbon–carbon composite electrodes by soft-templating for redox flow batteries

  • Maike Schnucklake,
  • László Eifert,
  • Jonathan Schneider,
  • Roswitha Zeis and
  • Christina Roth

Beilstein J. Nanotechnol. 2019, 10, 1131–1139, doi:10.3762/bjnano.10.113

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  • Technology, Institute of Physical Chemistry, D-76131 Karlsruhe, Germany 10.3762/bjnano.10.113 Abstract Highly porous carbon–carbon composite electrodes for the implementation in redox flow battery systems have been synthesized by a novel soft-templating approach. A PAN-based carbon felt was embedded into a
  • novel composite electrodes that were synthesized utilizing the soft-template method inspired by Martinez de Yuso et al. from 2017 [23]. With this method we are able to reduce the cost for the precursor materials significantly. We are able to use pyrrole-2-carboxyaldehyde, instead of ionic liquids, as
  • interactions between phloroglucinol and the surfactant lead to the formation of hydrogen bonds to the polyethylene chains of the polymer. In this fashion the porogen initiates a porous structure. It will be removed during the subsequent carbonization step [25]. The new composite materials have great potential
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Published 28 May 2019

Synthesis and characterization of quaternary La(Sr)S–TaS2 misfit-layered nanotubes

  • Marco Serra,
  • Erumpukuthickal Ashokkumar Anumol,
  • Dalit Stolovas,
  • Iddo Pinkas,
  • Ernesto Joselevich,
  • Reshef Tenne,
  • Andrey Enyashin and
  • Francis Leonard Deepak

Beilstein J. Nanotechnol. 2019, 10, 1112–1124, doi:10.3762/bjnano.10.111

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  • . (a,b) HAADF-STEM images of a SrxLa1−xS–TaS2 (20 atom % Sr in the precursor) nanotube showing multiple orientations of TaS2 layers. (a) HAADF-STEM image and (b–f) EDX elemental mapping on a SrxLa1−xS–TaS2 (40 atom % Sr in the precursor) nanotube of (b) Ta, (c) La, (d) a composite map of the elements
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Published 24 May 2019

Nanoscale optical and structural characterisation of silk

  • Meguya Ryu,
  • Reo Honda,
  • Adrian Cernescu,
  • Arturas Vailionis,
  • Armandas Balčytis,
  • Jitraporn Vongsvivut,
  • Jing-Liang Li,
  • Denver P. Linklater,
  • Elena P. Ivanova,
  • Vygantas Mizeikis,
  • Mark J. Tobin,
  • Junko Morikawa and
  • Saulius Juodkazis

Beilstein J. Nanotechnol. 2019, 10, 922–929, doi:10.3762/bjnano.10.93

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  • properties of a material are interrelated. By using a wide spectrum of electromagnetic waves from visible light to terahertz radiation, it is possible to gain insights into complex hierarchical structures of composite materials. For materials with strong structural anisotropy, defined by the molecular
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Published 23 Apr 2019

Synthesis of novel C-doped g-C3N4 nanosheets coupled with CdIn2S4 for enhanced photocatalytic hydrogen evolution

  • Jingshuai Chen,
  • Chang-Jie Mao,
  • Helin Niu and
  • Ji-Ming Song

Beilstein J. Nanotechnol. 2019, 10, 912–921, doi:10.3762/bjnano.10.92

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  • effective strategy, the combination of C-doping with nanocomposite semiconductors, is presented in this work. C-doped g-C3N4 (CCN) was prepared by supramolecular self-assembly and subsequently a number of CdIn2S4/CCN composite photocatalysts were designed and fabricated though in situ decoration of CdIn2S4
  • . Keywords: C-doped g-C3N4; CdIn2S4; composite materials; hydrogen generation; photocatalysis; Introduction The serious environmental concerns and increasing global energy demand have instigated growing awareness in the field of alternative energy generation over the past few decades. Photocatalysis
  • , Huang et al. fabricated self-doped C-atom g-C3N4 via self-assembly, which exhibited highly efficient photocatalytic activity of H2 evolution under visible-light irradiation [22]. Moreover, the construction of a heterojunction composite is an effective approach to facilitate the separation of
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Published 18 Apr 2019

Rapid, ultraviolet-induced, reversibly switchable wettability of superhydrophobic/superhydrophilic surfaces

  • Yunlu Pan,
  • Wenting Kong,
  • Bharat Bhushan and
  • Xuezeng Zhao

Beilstein J. Nanotechnol. 2019, 10, 866–873, doi:10.3762/bjnano.10.87

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  • locations. SEM images of TiO2–PFOS and Al2O3–PFOS composite surfaces. FTIR spectra of TiO2 and TiO2–PFOS, Al2O3 and Al2O3–PFOS. (a) Contact angle and FTIR spectrum of the TiO2–PFOS surface under different treatment conditions. (b) The change in transmittance for selected transitions, –OH, –CF2- and –CF3. (a
  • /superhydrophilic switching of the composite surface under UV illumination and heating (top), and the first and last cycle wettability switching process of a sample (bottom). Effect of PFOS concentration on the wettability conversion time and number of conversion cycles. Acknowledgements This research was
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Published 15 Apr 2019

Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating

  • Xiangdong Ye,
  • Junwen Hou and
  • Dongbao Cai

Beilstein J. Nanotechnol. 2019, 10, 840–847, doi:10.3762/bjnano.10.84

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  • Figure 2a and Figure 2b, respectively. It is obvious that after spraying, the glass-slide surface became rough with a large number of particles that formed irregular micro- and nanoscale composite structures, which increased the roughness of the coating surface and changed the wettability of the coating
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Published 10 Apr 2019

Periodic Co/Nb pseudo spin valve for cryogenic memory

  • Nikolay Klenov,
  • Yury Khaydukov,
  • Sergey Bakurskiy,
  • Roman Morari,
  • Igor Soloviev,
  • Vladimir Boian,
  • Thomas Keller,
  • Mikhail Kupriyanov,
  • Anatoli Sidorenko and
  • Bernhard Keimer

Beilstein J. Nanotechnol. 2019, 10, 833–839, doi:10.3762/bjnano.10.83

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  • ]. These ideas can be implemented through a Josephson contact with two stable states: a high value of the critical current, IC, corresponds to the ”open” state and a low value to the ”closed” state. Such a device can be assembled if the weak link is a composite F/N/F trilayer (N is a normal metal) whose
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Published 09 Apr 2019

Tungsten disulfide-based nanocomposites for photothermal therapy

  • Tzuriel Levin,
  • Hagit Sade,
  • Rina Ben-Shabbat Binyamini,
  • Maayan Pour,
  • Iftach Nachman and
  • Jean-Paul Lellouche

Beilstein J. Nanotechnol. 2019, 10, 811–822, doi:10.3762/bjnano.10.81

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  • ) nanocomposite. The composite is magnetic and forms a stable dispersion in water. It was characterized to verify the CAN-mag attachment to the nanotubes, and tested for PTT. Preliminary in-vitro PTT tests show that the WS2-CAN-mag nanocomposite successfully eliminated two types of cancerous cells: HeLa cells
  • steps that might cause massive breakage or exfoliation of the nanotubes. For this reason, we aimed for preparation conditions that would allow composite formation without damaging the nanotubes. Electron microscopy images (Figure 2) show that WS2 nanotubes maintained their general shape after
  • in TEM, and bright in SEM. A possible reason for this is that CAN-mag composite has a strong positive surface charge (see zeta potential results below in Figure 7), causing electrostatic repulsion forces that prevent a denser coverage. Another point that the electron microscope images show (see
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Published 02 Apr 2019

An efficient electrode material for high performance solid-state hybrid supercapacitors based on a Cu/CuO/porous carbon nanofiber/TiO2 hybrid composite

  • Mamta Sham Lal,
  • Thirugnanam Lavanya and
  • Sundara Ramaprabhu

Beilstein J. Nanotechnol. 2019, 10, 781–793, doi:10.3762/bjnano.10.78

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  • carbon nanofiber/TiO2 (Cu/CuO/PCNF/TiO2) composite uniformly covered with TiO2 nanoparticles was synthesized by electrospinning and a simple hydrothermal technique. The synthesized composite exhibits a unique morphology and excellent supercapacitive performance, including both electric double layer and
  • pseudo-capacitance behavior. Electrochemical measurements were performed by cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy. The highest specific capacitance value of 530 F g−1 at a current density of 1.5 A g−1 was obtained for the Cu/CuO/PCNF/TiO2 composite
  • electrode in a three-electrode configuration. The solid-state hybrid supercapacitor (SSHSC) fabricated based on this composite exhibits a high specific capacitance value of 330 F g−1 at a current density of 1 A g−1 with 78.8% capacitance retention for up to 10,000 cycles. At the same time, a high energy
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Published 01 Apr 2019
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