New micro/mesoporous nanocomposite material from low-cost sources for the efficient removal of aromatic and pathogenic pollutants from water

• Emmanuel I. Unuabonah,
• Robert Nöske,
• Jens Weber,
• Christina Günter and
• Andreas Taubert

Beilstein J. Nanotechnol. 2019, 10, 119–131, doi:10.3762/bjnano.10.11

• , dehydroxylation of kaolinite occurs, which causes the reflections of kaolinite to disappear (for example, at 12.35° and 20.34°, 2θ, JCPDF 98-008-7771). In the absence of the reflections of kaolinite, the remaining reflections of quartz (JCPDF 98-008-9277 at 2θ values of 20.83°, 26.61°, 36.49°, 39.43°, 50.08°, etc

• 750 °C for one hour. The originally used raw kaolinite is composed of kaolinite (k), quartz (qtz) and feldspar (microcline (kfs) and plagioclase (plg)) and small amounts of illite (il, JCPDF 98-009-0144) and anatase (TiO2, JCPDF 98-009-6946, at 2θ values of 25.29°). As already mentioned, the kaolinite

• heated at 550 °C and 2Z-HYCA prepared at 750 °C. k = K-feldspat (microcline), il = illite, qtz = quartz, plg = plagioclase, ghn = gahnite. 29Si, 27Al and 13C CP-MAS-NMR spectra of 2Z-HYCA calcined at 650 °C. *Rotation side bands of ethylene carbon. SEM images showing the growth pattern of 2Z-HYCA

Surface plasmon resonance enhancement of photoluminescence intensity and bioimaging application of gold nanorod@CdSe/ZnS quantum dots

• Siyi Hu,
• Yu Ren,
• Yue Wang,
• Jinhua Li,
• Junle Qu,
• Liwei Liu,
• Hanbin Ma and
• Yuguo Tang

Beilstein J. Nanotechnol. 2019, 10, 22–31, doi:10.3762/bjnano.10.3

• measured with an FLS980 spectrometer (Edinburgh instruments, UK). The morphology and size of the GNRs and QDs were obtained with an FEI Tecnai G2 F20 S-TWIN TEM operating at an accelerating voltage of 200 kV, and the samples were loaded into a quartz cell for the measurements. The TEM specimens were

Investigation of CVD graphene as-grown on Cu foil using simultaneous scanning tunneling/atomic force microscopy

• Majid Fazeli Jadidi,
• Umut Kamber,
• Oğuzhan Gürlü and
• H. Özgür Özer

Beilstein J. Nanotechnol. 2018, 9, 2953–2959, doi:10.3762/bjnano.9.274

• temperature, the Ar flow was stopped and the H2 flow was reduced while CH4 was let in to the quartz tube as the carbon source. As-grown samples, as well as graphene crsytals transferred on to dielectric substrates were investigated by optical microscopy and scanning electron microscopy (SEM). Raman spectra

Contactless photomagnetoelectric investigations of 2D semiconductors

• Marian Nowak,
• Marcin Jesionek,
• Barbara Solecka,
• Piotr Szperlich,
• Piotr Duka and
• Anna Starczewska

Beilstein J. Nanotechnol. 2018, 9, 2741–2749, doi:10.3762/bjnano.9.256

• . The radiation intensity was changed using neutral density filters (UV-NIR-FILTER-250-2000 nm, quartz glass substrate, Oriel). The intensity was monitored using a Hamamatsu S3399 photodiode whose short-circuit current was measured using an EG&G 5110 lock-in amplifier. The time dependence of the

Oriented zinc oxide nanorods: A novel saturable absorber for lasers in the near-infrared

• Pavel Loiko,
• Tanujjal Bora,
• Josep Maria Serres,
• Haohai Yu,
• Magdalena Aguiló,
• Francesc Díaz,
• Uwe Griebner,
• Valentin Petrov,
• Xavier Mateos and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2018, 9, 2730–2740, doi:10.3762/bjnano.9.255

• under ns-laser excitation [23]. This effect was ascribed to the defects promoted by the Mn2+ doping. Some studies revealed reverse saturable absorption (optical limiting) in ZnO thin films and NRs [24]. Zhu et al. studied ultrafast saturable absorption of multiwalled carbon nanotubes (MWCNTs) on quartz

Impact of the anodization time on the photocatalytic activity of TiO₂ nanotubes

• Jesús A. Díaz-Real,
• Geyla C. Dubed-Bandomo,
• Juan Galindo-de-la-Rosa,
• Luis G. Arriaga,
• Janet Ledesma-García and
• Nicolas Alonso-Vante

Beilstein J. Nanotechnol. 2018, 9, 2628–2643, doi:10.3762/bjnano.9.244

• of their specific systems [27][60][61]. A similar approach was used to evaluate the PEC properties of the TNTs. For this purpose, the electrodes were illuminated in a cell with quartz window while performing LSV using the same pretreatment of 10 s polarization. The photocurrent, jph, is then obtained

• photoelectrocatalytic system used to perform the experiments. Briefly, a 20 mg/mL MB solution in the electrolyte was irradiated in a three-electrode electrochemical cell with a quartz window. An electrolyte/electrode (EE) configuration was used with a distance between the working electrode and the quartz cell (optical

• pass) of 1 cm. The MB dissolution was recirculated using a peristaltic pump to a standard quartz cuvette where the absorbance at 638 nm was measured in situ. In a typical experiment, a fixed ratio of 12.5:1 (volume/area) was used for all the samples while a potential bias of 1 V/(Ag|AgCl) was applied

Au–Si plasmonic platforms: synthesis, structure and FDTD simulations

• Anna Gapska,
• Marcin Łapiński,
• Paweł Syty,
• Wojciech Sadowski,
• Józef E. Sienkiewicz and
• Barbara Kościelska

Beilstein J. Nanotechnol. 2018, 9, 2599–2608, doi:10.3762/bjnano.9.241

• ) under pure Ar plasma conditions (Argon, Air Products 99.999%). The Au target had 99.99% purity, the rate of Au layer deposition was about 0.4 nm·s−1 and the incident power was 32 W. The thickness of the films was measured in situ by a quartz crystal microbalance. The films were subsequently annealed at

Improved catalytic combustion of methane using CuO nanobelts with predominantly (001) surfaces

• Qingquan Kong,
• Yichun Yin,
• Bing Xue,
• Yonggang Jin,
• Wei Feng,
• Zhi-Gang Chen,
• Shi Su and
• Chenghua Sun

Beilstein J. Nanotechnol. 2018, 9, 2526–2532, doi:10.3762/bjnano.9.235

• get CuO NBs [23]. Methane catalytic oxidation test Methane catalytic oxidation experiments were carried out in a fixed-bed reactor (U-shaped quartz tube) with an inner diameter of 6 mm at atmospheric pressure. 35 mg of the catalysts was loaded into the reactor and supported by quartz wool. A mixed

Non-agglomerated silicon–organic nanoparticles and their nanocomplexes with oligonucleotides: synthesis and properties

• Asya S. Levina,
• Marina N. Repkova,
• Nadezhda V. Shikina,
• Zinfer R. Ismagilov,
• Svetlana A. Yashnik,
• Dmitrii V. Semenov,
• Yulia I. Savinovskaya,
• Natalia A. Mazurkova,
• Inna A. Pyshnaya and
• Valentina F. Zarytova

Beilstein J. Nanotechnol. 2018, 9, 2516–2525, doi:10.3762/bjnano.9.234

• . The spectrum was recorded with absorption compensation relative to water in the range 11000–54000 cm−1 in a quartz cuvette with an optical path length of 1 mm (Figure 2b). The size and zeta potential values of Si–NH2 and Si–NH2·ODN were measured at 5–50 mM concentration (for Si) in physiological

SERS active Ag–SiO₂ nanoparticles obtained by laser ablation of silver in colloidal silica

• Cristina Gellini,
• Francesco Muniz-Miranda,
• Alfonso Pedone and
• Maurizio Muniz-Miranda

Beilstein J. Nanotechnol. 2018, 9, 2396–2404, doi:10.3762/bjnano.9.224

• power meter (model 362; Scientech, Boulder, CO, USA) giving ≈5% accuracy in the 300–1000 nm spectral range. FT-SERS measurements were collected with a Fourier transform Raman spectrometer (Bruker Optics, Model MultiRam), equipped with a broad range quartz beamsplitter, an air-cooled Nd:YAG laser

Nanotribology

• Enrico Gnecco,
• Susan Perkin,
• Andrea Vanossi and
• Ernst Meyer

Beilstein J. Nanotechnol. 2018, 9, 2330–2331, doi:10.3762/bjnano.9.217

• techniques for materials characterization are those typical of surface science (e.g., X-ray diffraction, SEM, TEM, XPS and Raman spectroscopy), more specific to nanotribology are nanoindenters, nanotribometers, quartz force microbalance and especially atomic force microscopy (AFM), which, without a doubt

Two-dimensional photonic crystals increasing vertical light emission from Si nanocrystal-rich thin layers

• Lukáš Ondič,
• Marian Varga,
• Ivan Pelant,
• Alexander Kromka,
• Karel Hruška and
• Robert G. Elliman

Beilstein J. Nanotechnol. 2018, 9, 2287–2296, doi:10.3762/bjnano.9.213

• contrast between the SiNC-rich layer and the quartz substrate has to be relatively low. As it will be shown later, this leads in a real sample to spectral overlap of the two modes due to spectral broadening and enables to reach high extraction efficiencies. The low refractive-index contrast will also

Intrinsic ultrasmall nanoscale silicon turns n-/p-type with SiO₂/Si₃N₄-coating

• Dirk König,
• Daniel Hiller,
• Noël Wilck,
• Birger Berghoff,
• Merlin Müller,
• Sangeeta Thakur,
• Giovanni Di Santo,
• Luca Petaccia,
• Joachim Mayer,
• Sean Smith and
• Joachim Knoch

Beilstein J. Nanotechnol. 2018, 9, 2255–2264, doi:10.3762/bjnano.9.210

• -type Si wafers (Sb doping, 5 to 15 × 10−3 Ω cm) of (111)-surface orientation underwent wet-chemical cleaning. After deposition the wafers were annealed in a quartz tube furnace for 1 min at 1100 °C in pure N2 ambient to induce Si crystallization. Subsequently, the samples were H2-passivated at 450 °C

Dumbbell gold nanoparticle dimer antennas with advanced optical properties

• Janning F. Herrmann and
• Christiane Höppener

Beilstein J. Nanotechnol. 2018, 9, 2188–2197, doi:10.3762/bjnano.9.205

• advantage of AFM manipulation methods, CB[n] is ideally suited to mediate sub-nanometer gap formation. For this, a sharply pointed glass tip is glued to a piezoelectric quartz tuning fork (Figure 1C), which enables to control the tip position with respect to AuNPs deposited on a glass surface with sub

• formed of spherical AuNPs attached to a sharply pointed glass tip. Inset: Magnification to the gap region showing the aligned CB[n]s on the NP surfaces, which results in a sub-nanometer gap distance. (C) Macroscale picture of a glass tip attached to a piezoelectric quartz tuning fork acting as a force

Filling nanopipettes with apertures smaller than 50 nm: dynamic microdistillation

• Evelyne Salançon and
• Bernard Tinland

Beilstein J. Nanotechnol. 2018, 9, 2181–2187, doi:10.3762/bjnano.9.204

• . Results and Discussion Quartz capillaries, being of pure silica, have certain intrinsic properties (low dielectric constant, low loss factor, high volume resistivity, strength and chemical purity) that make them appropriate for the reproducible electrical measurements described below. Notably, they

• that fills 100% of nanopipettes. This dynamic microdistillation process can be applied to fill any nanopipette, whatever its shape or tip hole. The process is as follows: Due to the heating involved, a quartz nanopipette is recommended. A wall of heat is moved along the nanopipette. Deionized water

• nanopipette reliably usable in any experimental application. Experimental Nanopipette fabrication The capillaries used are pure silica tubes (quartz tubes) from Sutter (HERAEUS HSQ300) with 1 mm outer diameter and inner diameters of 300, 500 or 700 µm. Due to their high melting temperature, they are pulled

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

Localized photodeposition of catalysts using nanophotonic resonances in silicon photocathodes

• Evgenia Kontoleta,
• Sven H. C. Askes,
• Lai-Hung Lai and
• Erik C. Garnett

Beilstein J. Nanotechnol. 2018, 9, 2097–2105, doi:10.3762/bjnano.9.198

• the electrolyte, which was illuminated through a quartz window. The electrolyte consisted of an aqueous solution of chloroplatinic acid (4 mM) and Na2SO4 (0.1 M), with the pH value adjusted to 11 with 2 M NaOH. The back contact of the sample consisted of 4 nm of chromium and 50 nm of gold deposited

Nanoconjugates of a calixresorcinarene derivative with methoxy poly(ethylene glycol) fragments for drug encapsulation

• Alina M. Ermakova,
• Julia E. Morozova,
• Yana V. Shalaeva,
• Victor V. Syakaev,
• Aidar T. Gubaidullin,
• Alexandra D. Voloshina,
• Vladimir V. Zobov,
• Irek R. Nizameev,
• Olga B. Bazanova,
• Igor S. Antipin and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 2057–2070, doi:10.3762/bjnano.9.195

• . Fluorescence spectra were recorded on a Varian CaryEclipse spectrofluorimeter equipped with a Cary Temperature Controller. Absorbance measurements were performed in a Lambda 35 UV–vis spectrometer (Perkin Elmer Instruments) in quartz cells. Absorbance measurements at different temperatures were carried out

• using a Specord 50 plus instrument of Analytic Jena AG in quartz cells of 1 cm path length. The hemolytic activity of C11-mPEG against human red blood cells (hRBC) was tested by the method reported in [39]. Small-angle X-ray scattering (SAXS) data for samples were collected with the Bruker AXS Nanostar

• 2.5 nm, 1 cm quartz cuvettes were employed at 25 °C. The ratio of first (372 nm) and third (381 nm) emission band for every spectrum was estimated and the cac values were determined from the dependence of I/III on the concentration of macrocycle or mPEG-550. Preparation of micelles of 3 for DLS and

Recent highlights in nanoscale and mesoscale friction

• Andrea Vanossi,
• Dirk Dietzel,
• Andre Schirmeisen,
• Ernst Meyer,
• Rémy Pawlak,
• Thilo Glatzel,
• Marcin Kisiel,
• Shigeki Kawai and
• Nicola Manini

Beilstein J. Nanotechnol. 2018, 9, 1995–2014, doi:10.3762/bjnano.9.190

• , surface-force apparatus (SFA), and quartz-crystal microbalance (QCM) experiments measure the system frictional response in terms of crucial, but averaged, physical quantities, colloidal friction provides an unprecedented real-time insight into the dynamical mechanisms at play in 2D contacts, excitingly

Self-assembled quasi-hexagonal arrays of gold nanoparticles with small gaps for surface-enhanced Raman spectroscopy

• Emre Gürdal,
• Simon Dickreuter,
• Fatima Noureddine,
• Pascal Bieschke,
• Dieter P. Kern and
• Monika Fleischer

Beilstein J. Nanotechnol. 2018, 9, 1977–1985, doi:10.3762/bjnano.9.188

• /mL and stirred for 2 days. The micelles were loaded with chlorauric acid (HAuCl4, loading parameter (L = 0.5), Sigma-Aldrich) and stirred again for 2 days. Spin-coating was applied to cover the substrate with a monolayer of the gold-loaded micelles (30 s at 2000 rpm). Electroless deposition A quartz

• with a quartz glass slide (Figure 1b). In a third step the nanoparticles are enlarged by electroless deposition (Figure 1c), and finally the polymer is removed by an oxygen plasma treatment (Figure 1d). SEM images of the primary distribution of the gold precursor particles without any size increase by

• silicon substrate: (a) Gold nanoparticles with block copolymer micelles after spin-coating. (b) Deep UV illumination with water and a quartz glass on top of the substrate. (c) Electroless deposition. (d) Substrate after oxygen plasma, which removes the organic components. SEM images of the gold precursor

Synthesis of carbon nanowalls from a single-source metal-organic precursor

• André Giese,
• Sebastian Schipporeit,
• Volker Buck and
• Nicolas Wöhrl

Beilstein J. Nanotechnol. 2018, 9, 1895–1905, doi:10.3762/bjnano.9.181

• points of the CNWs synthesized on stainless steel (Figure 8a), aluminium (Figure 8b) and silicon (Figure 8d) show a similar slope compared to the data from Kurita et al. (quartz substrates with different catalytic layers, 532 nm, 0.5–3.0 µm), while the data points for the CNWs on nickel as substrate show

SO₂ gas adsorption on carbon nanomaterials: a comparative study

• Deepu J. Babu,
• Divya Puthusseri,
• Frank G. Kühl,
• Sherif Okeil,
• Michael Bruns,
• Manfred Hampe and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 1782–1792, doi:10.3762/bjnano.9.169

• with a total length of 5–20 μm. SWNTs have a diameter of ca. 1.5 nm, a length of 1–5 µm and were produced by using CVD with a purity of >95%. Vertically aligned carbon nanotubes (VACNTs) were synthesized in our lab over a Si/SiO2 (600 nm) substrate in a quartz furnace using water-assisted chemical

Preparation of micro/nanopatterned gelatins crosslinked with genipin for biocompatible dental implants

• Reika Makita,
• Tsukasa Akasaka,
• Seiichi Tamagawa,
• Yasuhiro Yoshida,
• Saori Miyata,
• Hirofumi Miyaji and
• Tsutomu Sugaya

Beilstein J. Nanotechnol. 2018, 9, 1735–1754, doi:10.3762/bjnano.9.165

• rubber replica molds were prepared according to methods previously reported [11][12][14]. Quartz and silicon master molds were purchased from Kyodo International, Inc. (Kawasaki, Japan). An area of 5 × 5 mm2 was patterned as follows: Grooves/ridges, holes, pillars with width or diameter of 2 µm, 1 µm, or

Toward the use of CVD-grown MoS₂ nanosheets as field-emission source

• Geetanjali Deokar,
• Nitul S. Rajput,
• Junjie Li,
• Francis Leonard Deepak,
• Wei Ou-Yang,
• Nicolas Reckinger,
• Carla Bittencourt,
• Jean-Francois Colomer and
• Mustapha Jouiad

Beilstein J. Nanotechnol. 2018, 9, 1686–1694, doi:10.3762/bjnano.9.160

• on the NSs transferred onto a conducting fluorine-tin-oxide (FTO) substrate. Experimental Sample preparation The NSs were grown on SiO2/Si substrates via double sulfurization of a sputter-deposited 50 nm Mo film using an ambient-pressure CVD technique. Flushing of the quartz tube using Ar gas stream

• placed at the 40 °C temperature zone and the 850 °C temperature zone (total 440 g) along with the Mo film sample placed at the 850 °C temperature zone in the downstream of the Ar flow in the quartz tube reactor. In the first sulfurization step of 30 min the S powder was placed at the 800 °C zone. The

• optimized second sulfurization step was performed by inserting the quartz tube in the hot zone of the furnace, such that the S powder placed at 40 °C reaches the 400 °C temperature zone. The sample remained at 850 °C as the quartz reactor was moved over a few centimeters. Wet chemical transfer A polymer

Closed polymer containers based on phenylboronic esters of resorcinarenes

• Tatiana Yu. Sergeeva,
• Rezeda K. Mukhitova,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Polina D. Klypina,
• Albina Y. Ziganshina and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 1594–1601, doi:10.3762/bjnano.9.151

• spectrophotometer. A quartz cell of 1 cm path length was used for all fluorescence measurements. Fl, Py and PTS were excited at 461, 337 and 360 nm, respectively. Chemicals Resorcinol, Na2SO3, paraldehyde, St, BA, Fl, Py and PTS were purchased from Sigma-Aldrich and Acros Organics. All materials were used as