Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• most exposed surface of Au(324). The QCM adsorption in aqueous solutions of amino acids showed that ᴅ-type amino acids prefer to adsorb on the surface. The DFT calculations further proved that the enantioselective adsorption in this system is probably caused by the existence of chiral planes in the

Optimizing PMMA solutions to suppress contamination in the transfer of CVD graphene for batch production

• Chun-Da Liao,
• Andrea Capasso,
• Tiago Queirós,
• Telma Domingues,
• Fatima Cerqueira,
• Nicoleta Nicoara,
• Jérôme Borme,
• Paulo Freitas and
• Pedro Alpuim

Beilstein J. Nanotechnol. 2022, 13, 796–806, doi:10.3762/bjnano.13.70

• . For statistical purposes, the number of cycles for each test was extended to eight by transferring the PMMA/graphene between two aqueous solutions. A1 and C1 PMMA solutions (see Table 1 below for the sample denominations) allowed for less than four cycles without breakage, demonstrating a low

Antibacterial activity of a berberine nanoformulation

• Hue Thi Nguyen,
• Tuyet Nhung Pham,
• Anh-Tuan Le,
• Nguyen Thanh Thuy,
• Tran Quang Huy and
• Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2022, 13, 641–652, doi:10.3762/bjnano.13.56

• properties of BBR NPs UV–vis absorption spectra of the aqueous solutions of pure BBR and BBR NPs having the same concentration were measured in the wavelength range of 200–550 nm using a UV–vis spectrophotometer (6850 UV/Vis, Jenway). The chemical bonding characteristics of pure BBR powder and BBR NPs

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

• thermophysical properties of nanofluids using a simulation environment. Moreover, this comparison introduces data on aqueous and nonaqueous suspensions in one study. Keywords: alkanes; aqueous solutions; CuO; hydrocarbon solutions; molecular dynamics simulation; nanoparticles; thermal conductivity

Ciprofloxacin-loaded dissolving polymeric microneedles as a potential therapeutic for the treatment of S. aureus skin infections

• Sharif Abdelghany,
• Walhan Alshaer,
• Yazan Al Thaher,
• Maram Al Fawares,
• Amal G. Al-Bakri,
• Saja Zuriekat and
• Randa SH. Mansour

Beilstein J. Nanotechnol. 2022, 13, 517–527, doi:10.3762/bjnano.13.43

• by correlating the peak area measured with known concentrations of ciprofloxacin samples. All measurements were conducted in triplicate to calculate mean values and standard deviations. Preparation of ciprofloxacin-loaded polymeric microneedles 20% PVA (w/w) and 60% (w/w) PVP aqueous solutions were

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

• Irena Mihailova,
• Vjaceslavs Gerbreders,
• Marina Krasovska,
• Eriks Sledevskis,
• Valdis Mizers,
• Andrejs Bulanovs and
• Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

• . The most important electrochemical measurements were carried out to determine H2O2 concentration in aqueous solutions using the obtained sensor. It is shown that the obtained non-enzymatic sensor has high sensitivity and selectivity toward H2O2. Experiments were also carried out to detect H2O2 in real

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

• conversion of Fe3O4 nanoparticle clusters. (a) Temperature elevation of aqueous solutions with increasing concentrations of NPCs in response to 808 nm laser irradiation at power density of 1 W·cm−2. (b) Temperature elevation of solutions with 0.25 mg/mL NPCs in response to 808 nm laser irradiation at

Relationship between corrosion and nanoscale friction on a metallic glass

• Haoran Ma and
• Roland Bennewitz

Beilstein J. Nanotechnol. 2022, 13, 236–244, doi:10.3762/bjnano.13.18

• films form on most metal surfaces and act as a barrier to the corrosive environment, thus impeding further corrosion. The corrosion properties of MGs, for example, the ability to passivate and to remain in the passive state in corrosive aqueous solutions, have been addressed in many studies using

• corrosion conditions. Recently, we investigated nanoscale friction on a Zr63Ni22Ti15 (ZrNiTi) MG in phosphate buffer after electrochemical polarization [21]. Our results demonstrated a new method to investigate in situ the structure of surface oxide films grown upon polarization in aqueous solutions using

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

• membrane to remove Pb2+ and Cu2+ ions from aqueous solutions by electrospinning PVP and 3-mercaptopropyltrimethoxysilane (TMPTMS) infused with cerium oxide [62]. Also, they have modified the PVP/CeO2/TMPTMS nanofibers with a surfactant (Pluronic123) to obtain smaller fiber diameters and greater pore volume

Impact of GaAs(100) surface preparation on EQE of AZO/Al₂O₃/p-GaAs photovoltaic structures

• Piotr Caban,
• Rafał Pietruszka,
• Jarosław Kaszewski,
• Monika Ożga,
• Bartłomiej S. Witkowski,
• Krzysztof Kopalko,
• Piotr Kuźmiuk,
• Katarzyna Gwóźdź,
• Ewa Płaczek-Popko,
• Krystyna Lawniczak-Jablonska and
• Marek Godlewski

Beilstein J. Nanotechnol. 2021, 12, 578–592, doi:10.3762/bjnano.12.48

• aqueous solutions are used with the addition of an oxidizer – usually hydrogen peroxide (H2O2). Such an etchant is able to turn GaAs into oxide and dissolve the created oxides “at the same time”. The popular etchants are H2SO4/H2O2/H2O, NH4OH/H2O2/H2O, and citric acid (CA)-based etchants – CA/H2O2/H2O [17

• surface preparation up to the last step in which the presence/lack of final passivation classifies the sample as belonging to the group A or B, respectively. The detailed preparation steps are also presented in Figure 1. All the aqueous solutions used in the experiments were prepared with deionized water

Surface-enhanced Raman scattering of water in aqueous dispersions of silver nanoparticles

• Paulina Filipczak,
• Krzysztof Hałagan,
• Jacek Ulański and
• Marcin Kozanecki

Beilstein J. Nanotechnol. 2021, 12, 497–506, doi:10.3762/bjnano.12.40

• discovery of the SERS effect in 1974 [27], most of the research is focused on biomolecules and medical applications [28][29]. The SERS effect of water has been studied since 1980. There are reports on the SERS effect of water in aqueous solutions of electrolytes placed between metal electrodes (Ag, Au, Cu

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

• Sina Kaabipour and
• Shohreh Hemmati

Beilstein J. Nanotechnol. 2021, 12, 102–136, doi:10.3762/bjnano.12.9

• for blood purification and to inhibit heart palpitations [44]. Silver was used in forms of aqueous solutions, coins, and plates for aseptic and antibacterial applications, as well as in food and dairy preservation up until the 19th century, as it was agreed that food and dairy products kept in silver

Effect of different silica coatings on the toxicity of upconversion nanoparticles on RAW 264.7 macrophage cells

• Cynthia Kembuan,
• Helena Oliveira and
• Christina Graf

Beilstein J. Nanotechnol. 2021, 12, 35–48, doi:10.3762/bjnano.12.3

• 10 mL of a solution containing ultrapure water and aqua regia (water/aqua regia = 4:1 v/v) and measured via ICP-OES for determining the concentration of the Er3+, Yb3+, and Y3+ ions (Supporting Information File 1). Aqueous solutions containing 1.0 ± 0.1 and 2.0 ± 0.1 ppm of Er3+, Yb3+, or Y3

Atomic layer deposited films of Al₂O₃ on fluorine-doped tin oxide electrodes: stability and barrier properties

• Hana Krýsová,
• Michael Neumann-Spallart,
• Hana Tarábková,
• Pavel Janda,
• Ladislav Kavan and
• Josef Krýsa

Beilstein J. Nanotechnol. 2021, 12, 24–34, doi:10.3762/bjnano.12.2

• , F:SnO2 on glass). The resistance to dissolution in aqueous solutions of various pH values was tested as well as the blocking capability of electron transport as criteria for the presence or change of Al2O3 on the surface. Experimental K3[Fe(CN)6], K4[Fe(CN)6], KCl, NaOH, and H2SO4 were of analytical

Nanocasting synthesis of BiFeO₃ nanoparticles with enhanced visible-light photocatalytic activity

• Thomas Cadenbach,
• Maria J. Benitez,
• A. Lucia Morales,
• Cesar Costa Vera,
• Luis Lascano,
• Francisco Quiroz,
• Alexis Debut and
• Karla Vizuete

Beilstein J. Nanotechnol. 2020, 11, 1822–1833, doi:10.3762/bjnano.11.164

• heating. In addition, the presence of Bi3+ in acidic aqueous solutions leads to the formation of polynuclear cationic species. Once a thermal treatment at 500 °C is applied, those clusters decompose into α- and β-Bi2O3 by-products, which are not observed when an intermediate heating step is carried out

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

• Andrey V. Shibaev,
• Petr V. Shvets,
• Darya E. Kessel,
• Roman A. Kamyshinsky,
• Anton S. Orekhov,
• Sergey S. Abramchuk,
• Alexei R. Khokhlov and
• Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

• , aqueous solutions containing the synthesized nanoparticles were sonicated for 30 min (15 min of pure sonication time, consisting of 5 s pulses followed by 5 s of rest) at a Sonics VCX 500 ultrasonicator (Newtown, CT, USA) in order to break the nanoparticle agglomerates. Transmission electron microscopy

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

• Mykola Borzenkov,
• Piersandro Pallavicini,
• Angelo Taglietti,
• Laura D’Alfonso,
• Maddalena Collini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2020, 11, 1134–1146, doi:10.3762/bjnano.11.98

• nanomaterial used, for example, aqueous solutions, self-assembled monolayers or polymeric nanocomposites [33]. In the case of plasmonic nanoparticles, the plasmonic properties (i.e., the maximum position of the absorption band and the band shape) are strongly affected by the conditions under which the

Electrochemical nanostructuring of (111) oriented GaAs crystals: from porous structures to nanowires

• Elena I. Monaico,
• Eduard V. Monaico,
• Veaceslav V. Ursaki,
• Shashank Honnali,
• Vitalie Postolache,
• Karin Leistner,
• Kornelius Nielsch and
• Ion M. Tiginyanu

Beilstein J. Nanotechnol. 2020, 11, 966–975, doi:10.3762/bjnano.11.81

• porous semiconductors although the anodization in environmentally friendly electrolytes, including aqueous solutions of NaCl, has attracted increasing attention during the last decade [5][18][19][20][21]. In this paper, we report on the electrochemical porosification of GaAs(111) wafers in neutral NaCl

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

• Jonathan Stott and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2020, 11, 938–951, doi:10.3762/bjnano.11.78

• chose phenylalanine as an aromatic and hydrophobic amino acid to achieve a good interaction with slightly water-soluble compounds (e.g. chloroanilic acid) in aqueous solutions. Due the lack of amino groups in the side chain of phenylalanine, no further protection groups are needed for NCA-synthesis and

Silver-decorated gel-shell nanobeads: physicochemical characterization and evaluation of antibacterial properties

• Marta Bartel,
• Katarzyna Markowska,
• Marcin Strawski,
• Krystyna Wolska and
• Maciej Mazur

Beilstein J. Nanotechnol. 2020, 11, 620–630, doi:10.3762/bjnano.11.49

• (reagent grade, Chempur), buffer solutions (consisting of NaOH, H3PO4, H3BO3, CH3COOH) pH 3–10 (POCh), 0.1% crystal violet solution (Aldrich). Aqueous solutions were prepared using high-purity water (Milli-Q Plus). For antibacterial tests, 96-well polystyrene microtiter plates (Greiner bio-one) and 40 mm

Soybean-derived blue photoluminescent carbon dots

• Shanshan Wang,
• Wei Sun,
• Dong-sheng Yang and
• Fuqian Yang

Beilstein J. Nanotechnol. 2020, 11, 606–619, doi:10.3762/bjnano.11.48

• the aqueous solutions of both the HTC-CDs and LA-CDs-10% is light-yellow under white light and blue under UV light irradiation of 365 nm. However, there is no difference in color for the aqueous suspension of the annealed-CDs under white light and 365 nm excitation. The UV–vis spectra of the HTC-CDs

• CDs in aqueous solutions. In addition, there are –N=C=N, N=C=O stretching vibrations represented by the weak bonds at 2156 and 2023 cm−1 for the HTC-CDs and 2155 and 2063 cm−1 for the LA-CDs-10% [45]. The C–H stretching vibrations are at 2931 and 2875 cm−1, respectively [7]. The stretching bonds of

Preparation and in vivo evaluation of glyco-gold nanoparticles carrying synthetic mycobacterial hexaarabinofuranoside

• Gennady L. Burygin,
• Polina I. Abronina,
• Nikita M. Podvalnyy,
• Sergey A. Staroverov,
• Leonid O. Kononov and
• Lev A. Dykman

Beilstein J. Nanotechnol. 2020, 11, 480–493, doi:10.3762/bjnano.11.39

• ). To prepare glyco-GNPs, the “gold number” (minimal amount of carbohydrate antigen that protects the sol against aggregation induced by NaCl) for the glycoside solutions was first determined. To this end, 20 μL of aqueous solutions of Ara6 glycoside 1 or 2 (initial concentration 1 mg·mL−1) was titrated

• glycosides 1 and 2, respectively; see Figure 1). Spectra of (1) the solution of the starting GNPs prepared in water, (2) a mixture of solutions of GNPs (pH 9.7) and aqueous solutions containing 100 μg·mL−1 of Ara6 glycosides 1 (A) and 2 (B) (these mixtures were used for immunization; 0.9% NaCl was

Nanoparticles based on the zwitterionic pillar[5]arene and Ag⁺: synthesis, self-assembly and cytotoxicity in the human lung cancer cell line A549

• Dmitriy N. Shurpik,
• Denis A. Sevastyanov,
• Pavel V. Zelenikhin,
• Pavel L. Padnya,
• Vladimir G. Evtugyn,
• Yuriy N. Osin and
• Ivan I. Stoikov

Beilstein J. Nanotechnol. 2020, 11, 421–431, doi:10.3762/bjnano.11.33

• sulfobetaine fragments to produce nanoparticles without Ag–Ag bonds leads to the formation of a limited number of particle forms [28]. Macrocycle molecules do not swell and have a greater degree of freedom in aqueous solutions while zwitterionic fragments prevent their aggregation. The lack of aggregation and

Poly(1-vinylimidazole) polyplexes as novel therapeutic gene carriers for lung cancer therapy

• Gayathri Kandasamy,
• Elena N. Danilovtseva,
• Vadim V. Annenkov and
• Uma Maheswari Krishnan

Beilstein J. Nanotechnol. 2020, 11, 354–369, doi:10.3762/bjnano.11.26

• -free water. The pH value was maintained at 7.0. A siRNA stock solution (10 µM) was prepared using RNAse-free water. For complexation, the aqueous solutions of PVI and siRNA were mixed at different ratios (v/v). The resultant mixtures were vortexed followed by incubation for 30 min at room temperature

An advanced structural characterization of templated meso-macroporous carbon monoliths by small- and wide-angle scattering techniques

• Felix M. Badaczewski,
• Marc O. Loeh,
• Torben Pfaff,
• Dirk Wallacher,
• Daniel Clemens and
• Bernd M. Smarsly

Beilstein J. Nanotechnol. 2020, 11, 310–322, doi:10.3762/bjnano.11.23

• impregnated with a liquid or dissolved carbon precursor, and thus the carbonization of the precursors takes place within the pores. Template removal is typically performed with concentrated aqueous solutions of NaOH or HF. The hierarchical pore system and the bimodal distribution of pore sizes provide a high