Comparative study of antibacterial properties of polystyrene films with TiO_x and Cu nanoparticles fabricated using cluster beam technique

• Vladimir N. Popok,
• Cesarino M. Jeppesen,
• Peter Fojan,
• Anna Kuzminova,
• Jan Hanuš and
• Ondřej Kylián

Beilstein J. Nanotechnol. 2018, 9, 861–869, doi:10.3762/bjnano.9.80

• toluene. Thin films are coated on silicon and quartz substrates of 10 × 10 mm2 and annealed at 110 °C (above the glass transition temperature). The thickness of PS films was measured by ellipsometry and found to be 50 ± 5 nm. Ti clusters are produced by magnetron sputtering in a cluster source similar to

Perfusion double-channel micropipette probes for oxygen flux mapping with single-cell resolution

• Yang Gao,
• Bin Li,
• Riju Singhal,
• Adam Fontecchio,
• Ben Pelleg,
• Zulfiya Orynbayeva,
• Yury Gogotsi and
• Gary Friedman

Beilstein J. Nanotechnol. 2018, 9, 850–860, doi:10.3762/bjnano.9.79

• the flow velocity field calculated from the previous study, R is the reaction rate, and is the flux, respectively. For hydrodynamic confinement verification, a 400 μm long quartz theta pipette was built at the top center in a water-filled rectangular computational region of (500 × 400 × 400 μm3). The

Surface-plasmon-enhanced ultraviolet emission of Au-decorated ZnO structures for gas sensing and photocatalytic devices

• T. Anh Thu Do,
• Truong Giang Ho,
• Thu Hoai Bui,
• Quang Ngan Pham,
• Hong Thai Giang,
• Thi Thu Do,
• Duc Van Nguyen and
• Dai Lam Tran

Beilstein J. Nanotechnol. 2018, 9, 771–779, doi:10.3762/bjnano.9.70

• activity wase evaluated by the photodegradation of an aqueous rhodamine B (RhB) solution at room temperature. Experiments were performed as follows: the prepared ZnO and Au NP/ZnO films (7.5 × 7.5 mm) were added into 2 mL of an aqueous RhB solution (1 × 10−6 M) in a quartz cuvette, and then the cell was

Optimisation of purification techniques for the preparation of large-volume aqueous solar nanoparticle inks for organic photovoltaics

• Furqan Almyahi,
• Thomas R. Andersen,
• Nathan A. Cooling,
• Natalie P. Holmes,
• Matthew J. Griffith,
• Krishna Feron,
• Xiaojing Zhou,
• Warwick J. Belcher and
• Paul C. Dastoor

Beilstein J. Nanotechnol. 2018, 9, 649–659, doi:10.3762/bjnano.9.60

• force microscope (AFM) operated in AC mode was used to probe the nanoparticle films. Film samples for AFM were spin-coated on quartz glass substrates at 2000 rpm for 1 min. A Zeiss Sigma ZP field-emission scanning electron microscope (FESEM) was used to image the nanoparticle films (operating at

Fabrication and photoactivity of ionic liquid–TiO₂ structures for efficient visible-light-induced photocatalytic decomposition of organic pollutants in aqueous phase

• Anna Gołąbiewska,
• Marta Paszkiewicz-Gawron,
• Aleksandra Sadzińska,
• Wojciech Lisowski,
• Ewelina Grabowska,
• Adriana Zaleska-Medynska and
• Justyna Łuczak

Beilstein J. Nanotechnol. 2018, 9, 580–590, doi:10.3762/bjnano.9.54

• (Oriel, light flux 6.5–7.5 mW/cm2) which emitted both UV and visible-light irradiation. The photoreactor (V = 25 cm3, i.d. 37 mm, length 30 mm) was equipped with a quartz window and exposure layer thickness was 3 cm. The optical path included a water filter and a glass filter (GG 420) which cut-off

Green synthesis of fluorescent carbon dots from spices for in vitro imaging and tumour cell growth inhibition

• Nagamalai Vasimalai,
• Vânia Vilas-Boas,
• Juan Gallo,
• María de Fátima Cerqueira,
• Mario Menéndez-Miranda,
• José Manuel Costa-Fernández,
• Lorena Diéguez,
• Begoña Espiña and
• María Teresa Fernández-Argüelles

Beilstein J. Nanotechnol. 2018, 9, 530–544, doi:10.3762/bjnano.9.51

• xenon discharge lamp, 1 cm quartz cell at room temperature. For all the fluorescence measurements, excitation and emission slit widths were kept at 5 nm. Dynamic light scattering (DLS) and zeta potential studies were performed on a Horiba nanoPartica SZ-100 instrument (Horiba Scientific, USA). For this

Colloidal solution of silver nanoparticles for label-free colorimetric sensing of ammonia in aqueous solutions

• Alessandro Buccolieri,
• Antonio Serra,
• Gabriele Giancane and
• Daniela Manno

Beilstein J. Nanotechnol. 2018, 9, 499–507, doi:10.3762/bjnano.9.48

• Colloidal silver nanoparticles were monitored at different reaction times (from 0 until saturation) and at different concentrations of ammonia. Aqueous solutions containing AgNO3 and increasing ammonia concentrations were used as references. A Varian Cary 5 spectrophotometer with a quartz cuvette of 10 mm

Influence of the preparation method on the photocatalytic activity of Nd-modified TiO₂

• Patrycja Parnicka,
• Paweł Mazierski,
• Tomasz Grzyb,
• Wojciech Lisowski,
• Ewa Kowalska,
• Bunsho Ohtani,
• Adriana Zaleska-Medynska and
• Joanna Nadolna

Beilstein J. Nanotechnol. 2018, 9, 447–459, doi:10.3762/bjnano.9.43

• cut-off wavelengths shorter than 350 or 420 nm, respectively. The experimental procedure was as follows: Nd-TiO2 powder (125 mg) was suspended in aqueous solutions of phenol (0.21 mM) or terephthalic acid (0.5 mM) or in an aqueous solution of scavenger and phenol in a quartz photoreactor (working

• stainless steel reactor with the working volume of about 35 mL equipped with a quartz window, two valves and a septum. An array of five LEDs (λmax = 415 nm) was used as an irradiation source. A glass plate covered by Nd-modified TiO2 was placed at the bottom side of the reactor followed by closing the

• reactor with a quartz window. Subsequently, the gaseous mixture was passed through the reaction chamber for 1 min. After closing the valves, the reactor was kept in dark for 30 min in order to achieve adsorption equilibrium. A reference of 200 μL sample was taken just before starting irradiation and

Engineering of oriented carbon nanotubes in composite materials

• Razieh Beigmoradi,
• Abdolreza Samimi and
• Davod Mohebbi-Kalhori

Beilstein J. Nanotechnol. 2018, 9, 415–435, doi:10.3762/bjnano.9.41

• on a substrate made of quartz [126]. Phase analysis methods In these methods, the crystal structure or the minerals in the material are identified. For example, the type and percentage of oxides contained in a sample can be identified and measured. The most famous phase analysis method is X-ray

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

• mercury lamp rated at 250 watts with an emission maximum at 365 nm. The lamp was located in a water cooled quartz jacket placed in the center of the reaction vessel with a volume of 800 mL. The bottom of the reactor featured a magnetic stirrer, which ensured effective mixing of the reaction mass. The

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

• Konstantin L. Firestein,
• Denis V. Leybo,
• Alexander E. Steinman,
• Andrey M. Kovalskii,
• Andrei T. Matveev,
• Anton M. Manakhov,
• Irina V. Sukhorukova,
• Pavel V. Slukin,
• Nadezda K. Fursova,
• Sergey G. Ignatov,
• Dmitri V. Golberg and
• Dmitry V. Shtansky

Beilstein J. Nanotechnol. 2018, 9, 250–261, doi:10.3762/bjnano.9.27

• catalytic oxidation of methanol for both types of BN/Ag hybrid nanomaterials are presented in Figure 5a. Quartz pellets (curve 1) and raw BN NPs (curve 2) were used as the reference samples. The UV BN/Ag HNMs demonstrated much better catalytic activity (curve 4) in comparison to hybrid nanomaterials

• stability of their catalytic properties. Interestingly, the catalytic activity of pure BN NPs was higher compared with inert quartz spheres. This result supports the conclusion of Lyalin et al. [15], who suggested that the impurities and other defects in a h-BN structure enhance the catalytic activity of h

• groups [24]. The formation of silicon oxide can be explained by a chemical reaction between the molten B2O3 phase in the BN/Ag HNMs and the quartz pellets. In addition, the UV BN/Ag sample revealed absorption bands within the 500–700 cm−1 range (Figure 6, spectrum 4), which can be ascribed to the

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

• Stefanie Krüger,
• Michael Schwarze,
• Otto Baumann,
• Christina Günter,
• Michael Bruns,
• Christian Kübel,
• Dorothée Vinga Szabó,
• Rafael Meinusch,
• Verónica de Zea Bermudez and
• Andreas Taubert

Beilstein J. Nanotechnol. 2018, 9, 187–204, doi:10.3762/bjnano.9.21

• (Ag) NPs or TiO2 nano-grass films with AuNP for photocatalytic water splitting [29][30]. Matsuoka et al. sputtered TiO2 on a quartz glass plate by radiofrequency (RF) magnetron sputtering deposition followed by Pt deposition to make a TiO2 thin film photocatalyst for water splitting [31]. Finally

• with cooling, a Teflon inlet as reaction chamber, and a 6 cm diameter quartz glass window [57]. The irradiation area is given by the size of the solid sample that was irradiated. A solar simulator (LOT Oriel Quantum Design), which is basically a 300 W Xe-lamp equipped with an AM-1.5G filter, was used

• to the data presented here. Chen et al. [23] demonstrated that a high amount of AuNP leads to AuNP clusters, which promote the recombination of electron–hole-pairs. The same studies also show an effect of the irradiation wavelength. Matsuoka et al. [31] deposited TiO2 on a quartz glass plate. The

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

• rate of 0.5 Å/s. Silver was evaporated at an average deposition rate of 2 Å/s. LiF was evaporated at an average deposition rate of 1 Å/s to form a 3 nm thick capping layer. The deposition rate and total film thickness were monitored by two quartz weights inside the deposition chamber. Then, film

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

• taken every 10 min and centrifuged to remove the dispersed photocatalyst, and the supernatant was transferred to a quartz cuvette to measure the UV–vis absorption spectrum. The concentration change of oxytetracycline was monitored according to its maximum absorbance at 364 nm (λmax) recorded by a Perkin

The role of ligands in coinage-metal nanoparticles for electronics

• Ioannis Kanelidis and
• Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

• spherical and rod-like gold nanoparticles dispersed in a formulation with PEDOT:PSS. Composite films with nanorod volume fractions between 10 and 70% were deposited onto quartz substrates; the film with the highest metal content reached a conductivity of 2000 S/cm without further processing, approximately

Localized growth of carbon nanotubes via lithographic fabrication of metallic deposits

• Fan Tu,
• Martin Drost,
• Imre Szenti,
• Janos Kiss,
• Zoltan Kónya and
• Hubertus Marbach

Beilstein J. Nanotechnol. 2017, 8, 2592–2605, doi:10.3762/bjnano.8.260

• films were prepared via sputter coating on a SiOx/Si(100) surface. As depicted in Figure 11, catalytic CVD experiments were carried out at atmospheric pressure in a horizontal quartz tube (MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, Hungary). The tube was

• located inside a horizontal electrical furnace (Lenton), enabling heating to the desired CNT growth temperature. The system was equipped with a mass flow controller, allowing a precise flow of gas mixtures. The sample was placed in a quartz boat located in the quartz tube. Prior to the CVD reaction, the

Nanoprofilometry study of focal conic domain structures in a liquid crystalline free surface

• Anna N. Bagdinova,
• Evgeny I. Demikhov,
• Nataliya G. Borisenko and
• Sergei M. Tolokonnikov

Beilstein J. Nanotechnol. 2017, 8, 2544–2551, doi:10.3762/bjnano.8.254

• and a decrease in the intensity of the back reflection of light. This is the reason that a stable interference pattern could not be established. Figure 3 demonstrates a 8CB smectic-A phase surface at 28 °С on the glass substrate. Before use, the quartz glass substrate was cleaned with an alcohol

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

• material was deposited on quartz substrates. The laser ablation was performed using an Nd:YAG laser system (Lotis LS-2147) operating at a wavelength of 355 nm with a pulse duration of 15 ns and a repetition rate of 10 Hz. The PLD experiments were carried out in air at atmospheric pressure. The angle

• of the nanoparticles produced using 600 laser pulses. (b) TEM and SAED images of the Au sample deposited using 1800 laser pulses on a quartz substrate and transferred to a TEM grid. The samples were deposited in a standard on-axis configuration (geometry 4). XRD pattern of a Au nanostructure produced

Changes of the absorption cross section of Si nanocrystals with temperature and distance

• Michael Greben,
• Petro Khoroshyy,
• Sebastian Gutsch,
• Daniel Hiller,
• Margit Zacharias and
• Jan Valenta

Beilstein J. Nanotechnol. 2017, 8, 2315–2323, doi:10.3762/bjnano.8.231

• capping layer, respectively. The samples were subsequently annealed in a quartz tube furnace at 1150 °C for 1 h in high-purity N2 in order to form Si NCs and then passivated by annealing in H2 at 500 °C for defect passivation. In addition to ML samples, one single layer (SL) sample with a thick SRON 200

• of the samples see our recent paper [11]. The PL experiments were performed under excitation with a 405 nm diode laser the beam of which was modulated using a quartz acousto-optic cell. The edge switching time is about 100 ns. The laser is coupled to a custom-made micro-spectroscopy set-up with an

Hydrothermal synthesis of ZnO quantum dot/KNb₃O₈ nanosheet photocatalysts for reducing carbon dioxide to methanol

• Xiao Shao,
• Weiyue Xin and
• Xiaohong Yin

Beilstein J. Nanotechnol. 2017, 8, 2264–2270, doi:10.3762/bjnano.8.226

• Raman system using a 325 nm laser. Photocatalytic reaction The photocatalytic reduction of CO2 to methanol was carried out at ambient conditions in a quartz container and batch operated slurry reactor with cooling jacket. 20 mg of the catalyst was added to 20 mL of isopropanol under magnetic stirring

The interplay between spin densities and magnetic superexchange interactions: case studies of mono- and trinuclear bis(oxamato)-type complexes

• Azar Aliabadi,
• Bernd Büchner,
• Vladislav Kataev and
• Tobias Rüffer

Beilstein J. Nanotechnol. 2017, 8, 2245–2256, doi:10.3762/bjnano.8.224

• magnetic field B0 in the plane perpendicular to the molecular plane to obtain anisotropic ESR parameters. A standard manually controlled goniometer from Bruker was used for this purpose with the sample attached to a quartz-rod sample holder. As an example, experimental and simulated X-band ESR spectra of 4

Synthesis and characterization of noble metal–titania core–shell nanostructures with tunable shell thickness

• Bartosz Bartosewicz,
• Marta Michalska-Domańska,
• Malwina Liszewska,
• Dariusz Zasada and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2017, 8, 2083–2093, doi:10.3762/bjnano.8.208

• . Suspensions of the synthesized nanostructures were measured in a 1 cm optical path quartz cuvette placed inside the integration sphere. SEM measurements The morphology of Ag@TiO2 and Au@TiO2 structures was characterized based on the images obtained using a Quanta 3D FEG dual beam scanning electron microscope

A comparative study of the nanoscale and macroscale tribological attributes of alumina and stainless steel surfaces immersed in aqueous suspensions of positively or negatively charged nanodiamonds

• Colin K. Curtis,
• Antonin Marek,
• Alex I. Smirnov and
• Jacqueline Krim

Beilstein J. Nanotechnol. 2017, 8, 2045–2059, doi:10.3762/bjnano.8.205

• to values in the range 0.05–0.1 for both stainless steel and alumina, while +ND suspensions yielded an increase in friction for stainless steel contacts but little to no increase for alumina contacts. Quartz crystal microbalance (QCM), atomic force microscopy (AFM) and scanning electron microscopy

• : additives; alumina; aqueous colloids; fractal; friction; lubricants; nanodiamond; nanotribology; quartz crystal microbalance; stainless steel; Introduction Interest in nanoparticles as eco-friendly lubricant additives has grown tremendously in recent years [1][2]. The field is driven in a large part by a

• typical settings of an accelerating voltage and a bias of 2.00 kV and 200 V, respectively. Quartz crystal microbalance apparatus QCM data were collected using a QCM100 (Stanford Research Systems, Sunnyvale, CA, USA) system. The system includes a controller, oscillator electronics and a Teflon holder and a

Advances and challenges in the field of plasma polymer nanoparticles

• Andrei Choukourov,
• Pavel Pleskunov,
• Daniil Nikitin,
• Valerii Titov,
• Artem Shelemin,
• Mykhailo Vaidulych,
• Anna Kuzminova,
• Pavel Solař,
• Jan Hanuš,
• Jaroslav Kousal,
• Ondřej Kylián,
• Danka Slavínská and
• Hynek Biederman

Beilstein J. Nanotechnol. 2017, 8, 2002–2014, doi:10.3762/bjnano.8.200

• Figure 3b. Quartz crystal microbalance (QCM) can measure the total mass flux of the NPs (neutral, positively and negatively charged) without any voltage applied to the grids. A highly positive or negative potential applied to the central grid repels the NPs of the opposite charge and allows the rest to

Carbon nano-onions as fluorescent on/off modulated nanoprobes for diagnostics

• Stefania Lettieri,
• Marta d’Amora,
• Adalberto Camisasca,
• Alberto Diaspro and
• Silvia Giordani

Beilstein J. Nanotechnol. 2017, 8, 1878–1888, doi:10.3762/bjnano.8.188

• . Fluorescence spectra were taken on a Horiba Jobin Yvon Fluoromax-4 spectrofluorometer in 1.00 × 1.00 cm quartz glass cells. The CNO samples were dispersed in DMSO to a final concentration of 1 mg mL−1. The dispersion of CNOs was sonicated for 15 min at 37 kHz and further diluted in DMSO to achieve final