Synthesis of rare-earth metal and rare-earth metal-fluoride nanoparticles in ionic liquids and propylene carbonate

• Marvin Siebels,
• Lukas Mai,
• Laura Schmolke,
• Kai Schütte,
• Juri Barthel,
• Junpei Yue,
• Jörg Thomas,
• Bernd M. Smarsly,
• Anjana Devi,
• Roland A. Fischer and
• Christoph Janiak

Beilstein J. Nanotechnol. 2018, 9, 1881–1894, doi:10.3762/bjnano.9.180

• small, nearly spherical and partially agglomerated particles. Close-up TEM images show interference patterns for EuF3 and ErF3, which indicate crystallinity of the REF3-NPs (Figure 1 middle, and Figure S5a, Supporting Information File 1). The crystallinity of the particles was confirmed and the crystal

• by TEM (Figure 6 and Figure S7a, Supporting Information File 1) to values of 1.0–2.5 nm for Gd (average diameter of 1.5 ± 0.5 nm) and 2.0–3.5 nm for Er (average diameter 3.0 ± 0.5 nm) (Table 1). A close-up of the TEM images shows interference patterns, indicating crystallinity of the RE-NPs. The

• crystallinity of the RE-NPs was confirmed by SAED and gave the expected reflections for elemental Gd and Er (Figure 7 and Figure S7b, Supporting Information File 1). Due to the very small size of the Gd and Er particles a meaningful PXRD pattern could not be obtained. Characterization by EDX (Figure 7 and

Uniform cobalt nanoparticles embedded in hexagonal mesoporous nanoplates as a magnetically separable, recyclable adsorbent

• Can Zhao,
• Yuexiao Song,
• Tianyu Xiang,
• Wenxiu Qu,
• Shuo Lou,
• Xiaohong Yin and
• Feng Xin

Beilstein J. Nanotechnol. 2018, 9, 1770–1781, doi:10.3762/bjnano.9.168

• concentrations of RhB in the solution, respectively; V (L) represents the volume of RhB solution; m (g) is the weight of the adsorbent used. Results and Discussion Characterization of the hexagonal magnetic mesoporous nanoplates The crystallinity of the samples was confirmed by XRD and the results are given in

Controllable one-pot synthesis of uniform colloidal TiO₂ particles in a mixed solvent solution for photocatalysis

• Jong Tae Moon,
• Seung Ki Lee and
• Ji Bong Joo

Beilstein J. Nanotechnol. 2018, 9, 1715–1727, doi:10.3762/bjnano.9.163

• process. Varying the ratio of solvent composition, the concentration of surfactant and TiO2 precursor was used to control the particle diameter, degree of monodispersity and morphology. The modification of the calcination temperature affected the crystallinity and crystalline phase of the colloidal TiO2

• particles. When uniform, amorphous TiO2 particles were calcined at an optimal temperature (500 °C), the final sample exhibited beneficial characteristics such as high anatase crystallinity with a mixed phase of anatase and rutile and relatively high surface area. The photocatalytic efficiency of the uniform

• TiO2 sample with high anatase crystallinity with mixed phase and high surface area was dramatically enhanced towards RhB degradation under UV–vis irradiation. We systemically discuss the relationship between the synthetic parameters in our synthesis and the properties of the final TiO2 products, as

Nanocomposites comprised of homogeneously dispersed magnetic iron-oxide nanoparticles and poly(methyl methacrylate)

• Sašo Gyergyek,
• David Pahovnik,
• Ema Žagar,
• Alenka Mertelj,
• Rok Kostanjšek,
• Miloš Beković,
• Marko Jagodič,
• Heinrich Hofmann and
• Darko Makovec

Beilstein J. Nanotechnol. 2018, 9, 1613–1622, doi:10.3762/bjnano.9.153

• dissolution of the Fe cations from the nanocomposite and the nanoparticles was tested with dissolution in the presence of citric acid at pH 1, where further details can be found in Supporting Information File 1. Characterization The particle size, crystallinity and dispersion over the nanocomposites were

Optical near-field mapping of plasmonic nanostructures prepared by nanosphere lithography

• Gitanjali Kolhatkar,
• Alexandre Merlen,
• Jiawei Zhang,
• Chahinez Dab,
• Gregory Q. Wallace,
• François Lagugné-Labarthet and
• Andreas Ruediger

Beilstein J. Nanotechnol. 2018, 9, 1536–1543, doi:10.3762/bjnano.9.144

• , which is ascribed to different reasons: for one, the experimental radii of the apexes might be larger than in the numerical model, or the crystallinity of the gold composing the nanotriangles might be less than ideal thus causing dissipation. Also, the simulation assumes perfectly crystalline gold. In

• this study, the samples here were prepared by evaporation and have no defined crystallinity, unlike colloidal solutions composed of monocrystalline metallic particles which generally provide higher enhancements by several order of magnitude [21]. However, the enhancement of the optical near-field is

Single-crystalline FeCo nanoparticle-filled carbon nanotubes: synthesis, structural characterization and magnetic properties

• Rasha Ghunaim,
• Maik Scholz,
• Christine Damm,
• Bernd Rellinghaus,
• Rüdiger Klingeler,
• Bernd Büchner,
• Michael Mertig and
• Silke Hampel

Beilstein J. Nanotechnol. 2018, 9, 1024–1034, doi:10.3762/bjnano.9.95

• nanoparticles of Fe50Co50@CNT was investigated by HRTEM measurements. Surprisingly, some particles in the as-prepared sample showed high crystallinity, even without annealing, as shown in Figure 3c. The crystallinity of the core material was confirmed by the appearance of the lattice fringes (marked by short

• crystallinity, an annealing step is necessary. The rather spherical geometry of the intermetallic nanoparticles inside CNTs was confirmed by TEM aspect ratio studies (i.e., the ratio of the particle’s long axis to its short axis). In the as-prepared sample (with nearly 140 investigated filling particles), 57

• crystallinity and thus a larger number of 110 planes. Higher filling is also confirmed by TGA data. (2) The reflection intensities in general increase with annealing, which means that more particles of the homogenous bcc phase of Fe50Co50 are formed. The intense reflections at 2θ = 30° and 37 ° correspond to

Comparative study of sculptured metallic thin films deposited by oblique angle deposition at different temperatures

• Susann Liedtke,
• Christoph Grüner,
• Jürgen W. Gerlach and
• Bernd Rauschenbach

Beilstein J. Nanotechnol. 2018, 9, 954–962, doi:10.3762/bjnano.9.89

• incidence angle depends strongly on surface diffusion, but a consistent description remains challenging due to the complex interaction between surface diffusion, crystallinity and shadowing. Moreover, it has been demonstrated that the porosity of obliquely deposited metallic thin films can be increased

Effect of annealing treatments on CeO₂ grown on TiN and Si substrates by atomic layer deposition

• Silvia Vangelista,
• Rossella Piagge,
• Satu Ek and
• Alessio Lamperti

Beilstein J. Nanotechnol. 2018, 9, 890–899, doi:10.3762/bjnano.9.83

• annealing has been performed by using an Anton Paar tool mounted in the diffractometer. This allows us to collect the X-ray diffraction profile during annealing to monitor the evolution of crystallinity of the films during the thermal treatment. During the annealing the sample was kept in static N2

Heavy-metal detectors based on modified ferrite nanoparticles

• Urszula Klekotka,
• Ewelina Wińska,
• Elżbieta Zambrzycka-Szelewa,
• Dariusz Satuła and
• Beata Kalska-Szostko

Beilstein J. Nanotechnol. 2018, 9, 762–770, doi:10.3762/bjnano.9.69

• diffraction The fabrication of nonstochiometric compounds affects crystal growth, which is reflected in the crystalization degree. Therefore, examination of the crystallinity of the ferrite nanoparticles was performed by X-ray diffraction. The presence of well-defined sharp patterns proves the incorporation

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

• Shahreen Binti Izwan Anthonysamy,
• Syahidah Binti Afandi,
• Mehrnoush Khavarian and
• Abdul Rahman Bin Mohamed

Beilstein J. Nanotechnol. 2018, 9, 740–761, doi:10.3762/bjnano.9.68

Combined pulsed laser deposition and non-contact atomic force microscopy system for studies of insulator metal oxide thin films

• Daiki Katsube,
• Hayato Yamashita,
• Satoshi Abo and
• Masayuki Abe

Beilstein J. Nanotechnol. 2018, 9, 686–692, doi:10.3762/bjnano.9.63

• for checking the crystal structure, orientation plane, and crystallinity of a thin film. Once a single-atomic layer step is confirmed, a new sample is prepared under the same PLD conditions and in situ NC-AFM (and also STM) measurements can then be performed in UHV. As an example, a process flow for

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

• Ashish Kumar,
• Christian Schuerings,
• Suneel Kumar,
• Ajay Kumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

• heterojunction, which could be due to its poor crystallinity [46]. This interfacial contact favors the charge transfer between CT and g-C3N4, which suppress the recombination of photogenerated charge carriers and enhance the photocatalytic activity. Furthermore, the elemental mapping of g-C3N4, CT and CTCN was

Mechanistic insights into plasmonic photocatalysts in utilizing visible light

• Kah Hon Leong,
• Azrina Abd Aziz,
• Lan Ching Sim,
• Pichiah Saravanan,
• Min Jang and
• Detlef Bahnemann

Beilstein J. Nanotechnol. 2018, 9, 628–648, doi:10.3762/bjnano.9.59

• visible and near infrared (NIR) spectrum. But in order to show enhanced plasmonic photocatalysis performance, the understanding of the material system plays a vital role. This includes the type of noble metal and semiconductor photocatalyst together with their morphology, porosity, crystallinity, contact

Facile phase transfer of gold nanorods and nanospheres stabilized with block copolymers

• Yaroslav I. Derikov,
• Georgiy A. Shandryuk,
• Raisa V. Talroze,
• Alexander A. Ezhov and
• Yaroslav V. Kudryavtsev

Beilstein J. Nanotechnol. 2018, 9, 616–627, doi:10.3762/bjnano.9.58

• patterns and dark field images were used to confirm the crystallinity of Au nanoparticles. The length and diameter distributions of the nanorods and nanospheres were measured by ImageJ 1.50b open source software (Wayne Rasband, NIH, USA). SEM images were obtained on a scanning electron microscope JSM 7401F

Facile synthesis of ZnFe₂O₄ photocatalysts for decolourization of organic dyes under solar irradiation

• Arjun Behera,
• Debasmita Kandi,
• Sanjit Manohar Majhi,
• Satyabadi Martha and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 436–446, doi:10.3762/bjnano.9.42

• characterization The phase composition, crystal structure and crystallinity were examined by a Rigaku Miniflex XRD instrument using Cu Kα radiation (λ = 1.54056 Å). The UV–vis diffused reflectance spectra were analysed by a UV–vis spectrophotometer (JASCO 750) using BaSO4 as the reflectance reference. The

• XRD is carried out to identify the crystal structure, phase purity and crystallinity of the materials. Figure 1 presents the XRD patterns of the ZnFe2O4 samples calcined at different temperatures. The material prepared at 400 °C did not ZnFe2O4 nanocrystals because the activation temperature is not

• temperature, the crystallinity of the prepared ZFO materials increases. The crystallite size has been calculated by using the Scherrer equation, D = Kλ/β cosθ (K is a constant having value 0.9, θ is the Bragg diffraction angle, λ is the wavelength of the X-rays used (1.5406 Å) and β is the full-width at half

Photocatalytic and adsorption properties of TiO₂-pillared montmorillonite obtained by hydrothermally activated intercalation of titanium polyhydroxo complexes

• Mikhail F. Butman,
• Nikolay L. Ovchinnikov,
• Nikita S. Karasev,
• Nataliya E. Kochkina,
• Alexander V. Agafonov and
• Alexandr V. Vinogradov

Beilstein J. Nanotechnol. 2018, 9, 364–378, doi:10.3762/bjnano.9.36

• crystallinity (nanocrystals) representing a mixture of anatase and rutile phases. The structures exhibit improved adsorption and photocatalytic activity as a result of hydrothermally activated intercalation of titanium polyhydroxo complexes (i.e., TiCl4 hydrolysis products) in a solution with a concentration

• of dispersion and crystallinity for TiO2 in the MM structure, thus enhancing photocatalytic activity. Ooka et al. [16] report some data demonstrating high efficiency of hydrothermal effects when using a TiO2 sol as an intercalating agent. They note that the advantage of the hydrothermal treatment

• using a solution of titanium polyhydroxo complexes. In this paper we propose and successfully apply a method for producing TiO2-pillared MM with a high degree of crystallinity for the TiO2 pillars and improved adsorption and photocatalytic activities by hydrothermally activated intercalation of titanium

Synthesis and characterization of electrospun molybdenum dioxide–carbon nanofibers as sulfur matrix additives for rechargeable lithium–sulfur battery applications

• Ruiyuan Zhuang,
• Shanshan Yao,
• Maoxiang Jing,
• Xiangqian Shen,
• Jun Xiang,
• Tianbao Li,
• Kesong Xiao and
• Shibiao Qin

Beilstein J. Nanotechnol. 2018, 9, 262–270, doi:10.3762/bjnano.9.28

• (78-1072). As the calcination temperature was raised to 850 °C, the characteristic diffraction peaks of MoO2 became sharper and displayed higher intensities, indicating an increase in the crystallinity of MoO2 as shown in Table 1. Meanwhile, this was also reflected in the surface area, which decreased

• crystallinity of MoO2 associated with the rise of the calcination temperature. The obtained MoO2–CNFs were applied to a sulfur matrix for Li–S batteries and shown to exhibit high capacity when compared to electrodes with pure sulfur. The improved electrochemical performance could be attributed to the adsorption

Gas-assisted silver deposition with a focused electron beam

• Luisa Berger,
• Katarzyna Madajska,
• Iwona B. Szymanska,
• Katja Höflich,
• Mikhail N. Polyakov,
• Jakub Jurczyk,
• Carlos Guerra-Nuñez and
• Ivo Utke

Beilstein J. Nanotechnol. 2018, 9, 224–232, doi:10.3762/bjnano.9.24

• approximately fits the edge of the respective areas of different crystallinity in both deposits, emphasizing the importance of varying electron flux within and outside the PE beam area. After confirming that the deposit consists of pure silver particles in a carbonaceous matrix its electrical properties were

• nanoparticles within the line. Visible lattice planes indicate crystallinity of the material. (d) Selected area electron diffraction pattern on the line deposit. The diffraction pattern clearly confirms crystallinity of the deposit. By comparing to the fcc silver diffraction pattern (green) the pure silver

Dopant-stimulated growth of GaN nanotube-like nanostructures on Si(111) by molecular beam epitaxy

• Alexey D. Bolshakov,
• Alexey M. Mozharov,
• Georgiy A. Sapunov,
• Igor V. Shtrom,
• Nickolay V. Sibirev,
• Vladimir V. Fedorov,
• Evgeniy V. Ubyivovk,
• Maria Tchernycheva,
• George E. Cirlin and
• Ivan S. Mukhin

Beilstein J. Nanotechnol. 2018, 9, 146–154, doi:10.3762/bjnano.9.17

• of GaN NT-like nanostructures on Si(111) substrates covered with a thin AlN buffer layer. Analysis of the SEM and TEM images of the grown NTs show their high crystallinity. Additionally, we present a theoretical model explaining the obtained phenomena. Doped GaN nanostructures were investigated using

Co-reductive fabrication of carbon nanodots with high quantum yield for bioimaging of bacteria

• Jiajun Wang,
• Xia Liu,
• Gesmi Milcovich,
• Tzu-Yu Chen,
• Edel Durack,
• Sarah Mallen,
• Yongming Ruan,
• Xuexiang Weng and
• Sarah P. Hudson

Beilstein J. Nanotechnol. 2018, 9, 137–145, doi:10.3762/bjnano.9.16

• diffraction (XRD) was used to investigate the crystallinity of Sa, Sb and Se. As shown in Figure S2 in Supporting Information File 1, sample Sa and Se display a broad diffraction peak centered at around 22.7°, which is similar to the (002) lattice spacing for graphitic (sp2) carbon [30][31][32][33]. However

Growth model and structure evolution of Ag layers deposited on Ge films

• Arkadiusz Ciesielski,
• Lukasz Skowronski,
• Ewa Górecka,
• Jakub Kierdaszuk and
• Tomasz Szoplik

Beilstein J. Nanotechnol. 2018, 9, 66–76, doi:10.3762/bjnano.9.9

• of Warsaw, Department of Chemistry, Pasteura 1 str., 02-093 Warsaw, Poland 10.3762/bjnano.9.9 Abstract We investigated the crystallinity and optical parameters of silver layers of 10–35 nm thickness as a function 2–10 nm thick Ge wetting films deposited on SiO2 substrates. X-ray reflectometry (XRR

Facile synthesis of silver/silver thiocyanate (Ag@AgSCN) plasmonic nanostructures with enhanced photocatalytic performance

• Xinfu Zhao,
• Dairong Chen,
• Abdul Qayum,
• Bo Chen and
• Xiuling Jiao

Beilstein J. Nanotechnol. 2017, 8, 2781–2789, doi:10.3762/bjnano.8.277

• are detected in the sample (Supporting Information File 1, Figure S1), showing the high chemical purity of the product. The selected area electron diffraction (SAED) pattern of a single particle (Figure 1c) displays a set of bright spots, obviously suggesting the high crystallinity of the product

Enhanced photoelectrochemical water splitting performance using morphology-controlled BiVO₄ with W doping

• Xin Zhao and
• Zhong Chen

Beilstein J. Nanotechnol. 2017, 8, 2640–2647, doi:10.3762/bjnano.8.264

• : The morphologies were observed using a field-emission scanning electron microscope (FESEM, JEOL JSM-7600F). Crystallinity was identified by X-ray diffraction (XRD) patterns (Shimadzu 6000 X-ray diffractometer) with Cu Kα radiation (λ = 0.154 nm), using a 2θ scan mode with a fixed incidence angle at 5

Synthesis of metal-fluoride nanoparticles supported on thermally reduced graphite oxide

• Alexa Schmitz,
• Kai Schütte,
• Vesko Ilievski,
• Juri Barthel,
• Laura Burk,
• Rolf Mülhaupt,
• Junpei Yue,
• Bernd Smarsly and
• Christoph Janiak

Beilstein J. Nanotechnol. 2017, 8, 2474–2483, doi:10.3762/bjnano.8.247

• frequently showed interference patterns (lattice planes), which is an indication of crystallinity. For the iron difluoride nanoparticles nanorods were obtained besides nanoparticles (Figures S4, S8, S12 and S16 in Supporting Information File 1). For praseodymium trifluoride, spherical crystalline

Au nanostructure fabrication by pulsed laser deposition in open air: Influence of the deposition geometry

• Rumen G. Nikov,
• Anna Og. Dikovska,
• Nikolay N. Nedyalkov,
• Georgi V. Avdeev and
• Petar A. Atanasov

Beilstein J. Nanotechnol. 2017, 8, 2438–2445, doi:10.3762/bjnano.8.242

• ). Initially, PLD technology was used mainly for deposition of thin films with a high crystallinity, accurate stoichiometry, and thickness control on the order of an atomic monolayer [10]. In recent years, this method has been increasingly applied to growing nanostructures with properties that depend on the

• pulses) in order to investigate the structure of the material ablated. The TEM and selected area electron diffraction (SAED) images were taken on a HR scanning transmission electron microscope (STEM) (JEOL JEM 2100) to reveal the morphology and crystallinity of the as-deposited samples. For STEM