Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• the Bi2WO6/TiO2-NT nanocomposites. The detailed mechanism was revealed in the hierarchical Ag2O-nanoparticle/TiO2-nanotube composite reported by our group [31]. As shown in Figure 4a, the HR-TEM image of the 70%−Bi2WO6/TiO2-NT nanocomposite shows two kinds of lattice fringes with interplanar spacings

• shown in Supporting Information File 1, Table S3, in comparison with cellulose-derived Ag2O-nanoparticle/TiO2-nanotube (Ag2O-NP/TiO2-NT) composites [31], g-C3N4/TiO2- nanotube (g-C3N4/TiO2-NT) composites [32], and H3PW12O40/TiO2 nanocomposites [33] reported by our group, the hierarchical Bi2WO6/TiO2-NT

Comparative molecular dynamics simulations of thermal conductivities of aqueous and hydrocarbon nanofluids

• Adil Loya,
• Antash Najib,
• Fahad Aziz,
• Asif Khan,
• Guogang Ren and
• Kun Luo

Beilstein J. Nanotechnol. 2022, 13, 620–628, doi:10.3762/bjnano.13.54

• increasing number of nanoparticle collisions was obtained. It is known from the aforementioned literature that the properties of nanoparticles assist in enhancing the thermal conductive properties of base fluids. In a similar aspect, it was also found that hybridized nanoparticles considerably improve the

• ., eicosane C20H42) media. Before conducting simulations, the nanoparticle was created using the Material Studio software (Accryles Inc., USA is the sole proprietor of the Material Studio software produced for performing material/chemical design and analysis). This particle was then dispersed in water and

• constructed with 36 CuO molecules bonded by the COMPASS force field. This constructed nanoparticle size was 0.4 nm, as shown in Figure 1b. A molecular dynamics simulation of paraffin (i.e., eicosane C20H42) was also conducted for comparison with the aqueous solution. In the alkane/CuO nanofluid simulation

A new method for obtaining the magnetic shape anisotropy directly from electron tomography images

• Cristian Radu,
• Ioana D. Vlaicu and
• Andrei C. Kuncser

Beilstein J. Nanotechnol. 2022, 13, 590–598, doi:10.3762/bjnano.13.51

• Cristian Radu Ioana D. Vlaicu Andrei C. Kuncser National Institute of Materials Physics, Magurele, Romania Faculty of Physics, University of Bucharest, Bucharest, Romania 10.3762/bjnano.13.51 Abstract A new methodology to obtain magnetic information on magnetic nanoparticle (MNP) systems via

• : electron tomography; magnetite; Python; shape anisotropy; Introduction For any nanoparticle (NP) system, among the most important pieces of physical information for scientists is information related to the morphology (size, shape, and organization) of its constituents. In nanoscale systems, this

• , the size is reported under the assumption of a quasi-spherical shape of the constituent particles. There is a multitude of techniques dedicated to nanoparticle analysis, which are able to provide information regarding the mean size and/or size distribution within a limited domain of sizes, for example

Detection and imaging of Hg(II) in vivo using glutathione-functionalized gold nanoparticles

• Gufeng Li,
• Shaoqing Li,
• Rui Wang,
• Min Yang,
• Lizhu Zhang,
• Yanli Zhang,
• Wenrong Yang and
• Hongbin Wang

Beilstein J. Nanotechnol. 2022, 13, 549–559, doi:10.3762/bjnano.13.46

• molecular release system. After adding Cu(II), we observed a switching of the GNP–ʟ-Cys–Rh6G2 fluorescence from “OFF” to “ON” with high stability. Furthermore, it is worth noting that glutathione (GSH) contains a thiol and an amino group. It can not only conjugate to the nanoparticle surfaces through the

• . Protons induce a weak fluorescence of the spirolactam framework at acidic pH through ring opening. Therefore, we suggest that in the presence of Hg2+ the formation of a Rh6G2–Hg2+ complex leads to ring opening, followed by the release of RGCOOH from the nanoparticle surface via hydrolysis, strongly

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• transfer contribution to SERS signal enhancement, the electromagnetic contribution also has an impact on the SERS signal [81]. Xue et al. [82] and Libin Yang et al. [83] argued that ZnO lattice defects created by doping the nanoparticle lattice with other cations increases the SERS enhancement by promoting

The effect of metal surface nanomorphology on the output performance of a TENG

• Yiru Wang,
• Xin Zhao,
• Yang Liu and
• Wenjun Zhou

Beilstein J. Nanotechnol. 2022, 13, 298–312, doi:10.3762/bjnano.13.25

• obvious in experiment 15. The particle size distribution of experiment 15 is relatively concentrated, and its improvement on the output performance reaches 34%, almost twice that of experiments 4 and 5 (Figure 9). We measured the nanoparticle size and its variance and studied the relationship between the

Coordination-assembled myricetin nanoarchitectonics for sustainably scavenging free radicals

• Xiaoyan Ma,
• Haoning Gong,
• Kenji Ogino,
• Xuehai Yan and
• Ruirui Xing

Beilstein J. Nanotechnol. 2022, 13, 284–291, doi:10.3762/bjnano.13.23

• sustainability of radical scavenging activity due to the co-assembly that might have enhanced the stability of Myr and GSH. As shown in Figure 3d, ABTS+ solution was persistently added to 1 mL of MZG nanoparticle suspension or water for 5 days. The result revealed that MZG nanoparticles exhibited prolonged

Systematic studies into uniform synthetic protein nanoparticles

• Nahal Habibi,
• Ava Mauser,
• Jeffery E. Raymond and
• Joerg Lahann

Beilstein J. Nanotechnol. 2022, 13, 274–283, doi:10.3762/bjnano.13.22

• , 48109, USA 10.3762/bjnano.13.22 Abstract Nanoparticles are frequently pursued as drug delivery carriers due to their potential to alter the pharmacological profiles of drugs, but their broader utility in nanomedicine hinges upon exquisite control of critical nanoparticle properties, such as shape, size

• , or monodispersity. Electrohydrodynamic (EHD) jetting is a probate method to formulate synthetic protein nanoparticles (SPNPs), but a systematic understanding of the influence of crucial processing parameters, such as protein composition, on nanoparticle morphologies is still missing. Here, we address

• nanoparticle platforms for drug delivery transition from novelties to foundational biomedical technologies [1][2][3], it is critical to augment the existing strategies with precisely engineered nanocarriers that are better equipped to maneuver the host of barriers that exist in clinical translation [4][5

Photothermal ablation of murine melanomas by Fe₃O₄ nanoparticle clusters

• Xue Wang,
• Lili Xuan and
• Ying Pan

Beilstein J. Nanotechnol. 2022, 13, 255–264, doi:10.3762/bjnano.13.20

• development of resistance. Here, we fabricated Fe3O4 nanoparticle clusters (NPCs), which have drawn widespread attention, and investigated their role in the treatment of melanoma by photothermal therapy (PTT). Scanning electron microscopy imaging shows that our synthesized NPCs are spherical with an average

• the promise of Fe3O4 NPCs as a new PTT option to treat melanoma. Keywords: Fe3O4 nanoparticle clusters; heat shock protein 70; melanoma; near infrared; photothermal therapy; Introduction The global incidence of melanoma, one of the deadliest forms of cancer, has kept increasing annually over the

• needed to elicit sufficient hyperthermia by NIR irradiation, lingering magnetite may impose potential systemic toxicity. Thus, Fe3O4 single nanoparticles must be modified to reduce the dosage while keeping their therapeutic efficacy. In our earlier report, we synthesized Fe3O4 nanoparticle-containing

Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

• Max Mennicken,
• Sophia Katharina Peter,
• Corinna Kaulen,
• Ulrich Simon and
• Silvia Karthäuser

Beilstein J. Nanotechnol. 2022, 13, 219–229, doi:10.3762/bjnano.13.16

• mechanism, that is, thermally activated hopping conduction in the case of Ru-terpyridine wire devices or sequential tunneling in nanoparticle-based devices. Furthermore, the conductance switching of nanoparticle-based devices upon 530 nm irradiation was attributed to plasmon-induced metal-to-ligand charge

• transfer in the Ru-terpyridine complexes used as switching ligands. Finally, our results reveal a superior device performance of nanoparticle-based devices compared to molecular wire devices based on Ru-terpyridine complexes as functional units. Keywords: conductance switching; gold nanoparticles

• structure such that an almost complete nanoparticle layer was formed. In a next step, the acetyl-protected thiol groups of MPTP-SAc were hydrolyzed with concentrated ammonium solution yielding mainly Ru(MPTP)2–AuNP devices, followed by a washing procedure [15]. As usual, all nanoelectrode samples have been

Engineered titania nanomaterials in advanced clinical applications

• Padmavati Sahare,
• Paulina Govea Alvarez,
• Juan Manual Sanchez Yanez,
• Gabriel Luna-Bárcenas,
• Samik Chakraborty,
• Sujay Paul and
• Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

• affinities for the nanoparticle surface or the corona. Recently, Zhongru Gou et al. investigated the amount and type of cell adhesion-related proteins (such as fibronectin, vitronectin, and laminin) from serum adsorbed on titanium nanotube arrays. Their findings suggest that all the abovementioned proteins

• potential. Thus, the optimized TiO2 nanoparticle concentration of the PCL/5TiO2 sample exhibited improved biological and antibacterial properties for bone tissue engineering, thereby improving the properties of orthopedic devices [60]. Ko et al. found that titanium covered with a double layer of gold nps

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

• Senuri Kumarage,
• Imalka Munaweera and
• Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

Theranostic potential of self-luminescent branched polyethyleneimine-coated superparamagnetic iron oxide nanoparticles

• Rouhollah Khodadust,
• Ozlem Unal and
• Havva Yagci Acar

Beilstein J. Nanotechnol. 2022, 13, 82–95, doi:10.3762/bjnano.13.6

• factor receptor (EGFR). Pro-apoptotic polyinosinic–polycytidylic acid sodium (PIC) was delivered to HeLa cells with SPION@bPEI and caused a dramatic reduction in the cell viability at otherwise non-toxic nanoparticle concentrations, proving that bPEI coating is still an effective component for the

• over vacuum should be generated to obtain the spatial frequency distribution in the image. Then, a noise-filtering mask from the reduced FFT preserving only the crystalline contributions from the original image should be generated to produce the filtered nanoparticle image [35]. An AFM analysis

• and 15 μg/mL of bPEI (corresponding to nanoparticle concentration values of 10 and 20 μg/mL, respectively). A significant toxicity was observed at a dose of 22 μg/mL of free bPEI, which is equivalent to a 30 μg/mL SPION@bPEI dose. This is a significant enhancement in cytocompatibility of SPION@bPEI

Sputtering onto liquids: a critical review

• Anastasiya Sergievskaya,
• Adrien Chauvin and
• Stephanos Konstantinidis

Beilstein J. Nanotechnol. 2022, 13, 10–53, doi:10.3762/bjnano.13.2

• overview of the properties and applications of the produced NPs. Keywords: low-pressure plasmas; magnetron; nanoparticles; nanoparticle formation; sputtering; sputtering onto liquids; Introduction According to the general terminology, nanoparticles (NPs) are objects that have a size of less than 100 nm

Heating ability of elongated magnetic nanoparticles

• Elizaveta M. Gubanova,
• Nikolai A. Usov and
• Vladimir A. Oleinikov

Beilstein J. Nanotechnol. 2021, 12, 1404–1412, doi:10.3762/bjnano.12.104

• of magnitude with an increase in the volume fraction of nanoparticles in a cluster in the range of 0.04–0.2. Keywords: elongated magnetic nanoparticles; magnetic hyperthermia; numerical simulation; specific absorption rate; Introduction Magnetic nanoparticle assemblies have great potential for the

• particle, is the unit magnetization vector and (, , ) is the set of orthogonal unit vectors that determine the spatial orientations of the cubic easy anisotropy axes of the i-th nanoparticle of the assembly, Np being the number of nanoparticles. It is also assumed that the axes of symmetry of spheroidal

• direction of elongation of the i-th nanoparticle. The shape anisotropy constant is given by [48]: Here Ms = 450 emu/cm3 is the saturation magnetization of a magnetite nanoparticle [47] and Na is the demagnetizing factor along the long nanoparticle axis. In this work, we also consider the effect of MD

Enhancement of the piezoelectric coefficient in PVDF-TrFe/CoFe₂O₄ nanocomposites through DC magnetic poling

• Marco Fortunato,
• Alessio Tamburrano,
• Maria Paola Bracciale,
• Maria Laura Santarelli and
• Maria Sabrina Sarto

Beilstein J. Nanotechnol. 2021, 12, 1262–1270, doi:10.3762/bjnano.12.93

• influenced by magnetic poling, we performed FTIR analyses of six different samples. Figure 1 shows the FTIR spectra of the nanocomposite specimen produced with a CoFe2O4 nanoparticle content of 5 wt %, poled for increasing time (from 60 to 120 min) at increasing strengths of the DC magnetic field (50 and 110

• polymeric chains of PVDF-TrFe to align in the same direction. At relatively high magnetic field strengths (B > 50 mT) we found that the d33 increase is lower, in agreement with what has been observed in [25]. This behaviour has been attributed to the formation of CoFe2O4 nanoparticle aggregates [25]. The

Self-assembly of amino acids toward functional biomaterials

• Huan Ren,
• Lifang Wu,
• Lina Tan,
• Yanni Bao,
• Yuchen Ma,
• Yong Jin and
• Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

• been shown that a novel protein-based nanoparticle with enhanced photothermal effect has been obtained for antitumor therapy using metal ions, proteins, and photosensitizers as building blocks [69]. The integration of metal ions significantly improved the structural stability and photothermal

• properties of the nanoparticles [69]. The use of amino acids coordinated with metal ions and the encapsulation of guest molecule photosensitizers have also achieved encouraging results. Zhang et al. [70] developed an antitumor photodynamic therapy (PDT) nanoparticle based on the coordination of modified

• +/Ce6 was greater than 50.0% in both cases, and the encapsulation efficiency was greater than 99.0%. The Fmoc-H/Zn2+/Ce6 and Z-HF/Zn2+/Ce6 nanoparticle assembly were based on coordination and other noncovalent interactions which are sensitive to environmental changes. They demonstrated the robustness of

pH-driven enhancement of anti-tubercular drug loading on iron oxide nanoparticles for drug delivery in macrophages

• Karishma Berta Cotta,
• Sarika Mehra and
• Rajdip Bandyopadhyaya

Beilstein J. Nanotechnol. 2021, 12, 1127–1139, doi:10.3762/bjnano.12.84

• Karishma Berta Cotta Sarika Mehra Rajdip Bandyopadhyaya Centre for Research in Nanotechnology and Science, IIT Bombay, Powai, Mumbai, Maharashtra – 400076, India Chemical Engineering Department, IIT Bombay, Powai, Mumbai, Maharashtra – 400076, India 10.3762/bjnano.12.84 Abstract Nanoparticle

• with stabilizing agents. We hypothesize that, zwitterionic drugs like norfloxacin (NOR, a fluoroquinolone) can manifest dual functionality – nanoparticle stabilization and antibiotic activity, eliminating the need of a separate stabilizing agent. Since these drugs have different charges, depending on

• imparts multiple benefits – improved IONP stability, enhanced drug coating, higher drug uptake in macrophages at reduced toxicity and slower drug release. Keywords: drug-nanoparticle interactions; drug uptake; intra-macrophage; iron oxide nanoparticles; norfloxacin; Introduction Nanoparticles have taken

Assessment of the optical and electrical properties of light-emitting diodes containing carbon-based nanostructures and plasmonic nanoparticles: a review

• Keshav Nagpal,
• Erwan Rauwel,
• Frédérique Ducroquet and
• Protima Rauwel

Beilstein J. Nanotechnol. 2021, 12, 1078–1092, doi:10.3762/bjnano.12.80

• and carbon-based nanostructures in the device architecture. Six types of OLED with AgNP, AuNP, GR, MWNT, SWNT, and GR + AuNP in the device structure were compared. In general, plasmonic nanoparticle-based OLED demonstrate lower turn-on voltages and higher luminance compared to the graphene or CNT

Use of nanosystems to improve the anticancer effects of curcumin

• Andrea M. Araya-Sibaja,
• Norma J. Salazar-López,
• Krissia Wilhelm Romero,
• José R. Vega-Baudrit,
• J. Abraham Domínguez-Avila,
• Carlos A. Velázquez Contreras,
• Ramón E. Robles-Zepeda,
• Mirtha Navarro-Hoyos and
• Gustavo A. González-Aguilar

Beilstein J. Nanotechnol. 2021, 12, 1047–1062, doi:10.3762/bjnano.12.78

• environments because in this type of formulation, it is preferred that the nanoparticle is stable at pH 7.4 (pH of a healthy tissue) and that CUR release is carried out in an acidic pH, which is characteristic of tumor cell endosomes (pH 5.0–5.8) [39]. On the other hand, Bonaccorso et al. [85] compared CUR

Revealing the formation mechanism and band gap tuning of Sb₂S₃ nanoparticles

• Maximilian Joschko,
• Franck Yvan Fotue Wafo,
• Christina Malsi,
• Danilo Kisić,
• Ivana Validžić and
• Christina Graf

Beilstein J. Nanotechnol. 2021, 12, 1021–1033, doi:10.3762/bjnano.12.76

• electron beam, which caused the particles to appear larger. Consequently, the stacked deflection peaks (Figure 5b, 14.7 nm, red and green mark) correspond to a nanoparticle cluster similar to those found in Figure 4b. Chemical composition To confirm the XRD results for stibnite and to examine the

Progress and innovation of nanostructured sulfur cathodes and metal-free anodes for room-temperature Na–S batteries

• Marina Tabuyo-Martínez,
• Bernd Wicklein and
• Pilar Aranda

Beilstein J. Nanotechnol. 2021, 12, 995–1020, doi:10.3762/bjnano.12.75

• to the shuttle effect, low electrochemical utilization of sulfur, and low specific surface area [16][52]. Many of these drawbacks can be overcome by reducing the size of the active sulfur phase to the nanoparticle range. The accompanied increase in surface area generally accelerates interfacial

• search results were reduced to half (703) and to a quarter (358) when “room-temperature” and additionally “sulfur or sulphur” were added to the search query, respectively, leaving the abovementioned companies still as the main applicants. The additional inclusion of the term “nanoparticle or

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

• Nabojit Das,
• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

• of gold and silver nanoparticles. Surface plasmon resonance is an inherent property of plasmonic metal nanoparticles that is immensely employed as a tool for theranostics and is highly influenced by the size and shape of the nanoparticle [2]. The property of SPR has also been exploited for nanochips

• ability of NIR/IR rays to deeply penetrate tissues, enabling nanoparticle-mediated photothermal or contrast effects. However, the final purpose of these nanomaterials for biological applications is determined after successful toxicity assessment and stability evaluation in biological media [8

• potentials, neutralizing charge, and in particular, crystal face pacification, enabling preferential crystal growth. DESs are the medium where nanoparticle synthesis occurs in the presence of capping agent and reducing agents. Biocompatible capping and reducing agents, such as carbohydrates (i.e

Modification of a SERS-active Ag surface to promote adsorption of charged analytes: effect of Cu²⁺ ions

• Bahdan V. Ranishenka,
• Andrei Yu. Panarin,
• Irina A. Chelnokova,
• Sergei N. Terekhov,
• Peter Mojzes and
• Vadim V. Shmanai

Beilstein J. Nanotechnol. 2021, 12, 902–912, doi:10.3762/bjnano.12.67

• round bottom flask and stirred until complete dissolution. Then, 640 µL of 4 mg/mL silver nitrate solution were added under vigorous stirring and kept for 4 h in the ultrasonic bath. The resulting silver nanoparticle solution was dialyzed against 2.5 mM sodium citrate and stored at 4 °С. Glass and

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

• Sepand Tehrani Fateh,
• Lida Moradi,
• Elmira Kohan,
• Michael R. Hamblin and
• Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64