Synthesis and catalytic application of magnetic Co–Cu nanowires

• Lijuan Sun,
• Xiaoyu Li,
• Zhiqiang Xu,
• Kenan Xie and
• Li Liao

Beilstein J. Nanotechnol. 2017, 8, 1769–1773, doi:10.3762/bjnano.8.178

• ). H3NBH3 was supplied from Aladdin (Shanghai, China). Deionized water was used in all aqueous solutions. The following reactions took place between two parallel neodymium magnets (60 × 30 × 10 mm3) separated 150 mm apart. The magnetic intensity inside the reaction solution was approximately 40 mT as

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

• Suneel Kumar,
• Ashish Kumar,
• Ashish Bahuguna,
• Vipul Sharma and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2017, 8, 1571–1600, doi:10.3762/bjnano.8.159

• hydroxyl groups on its surface, which make GO hydrophilic. Thus GO is easily dispersible in water and hence it has more exposed area in aqueous solutions and effectively catalyses the water splitting reaction. In addition, the band gap of GO can be tuned with its degree of reduction. The variation of the

A biofunctionalizable ink platform composed of catechol-modified chitosan and reduced graphene oxide/platinum nanocomposite

• Peter Sobolewski,
• Agata Goszczyńska,
• Małgorzata Aleksandrzak,
• Karolina Urbaś,
• Joanna Derkowska,
• Agnieszka Bartoszewska,
• Jacek Podolski,
• Ewa Mijowska and
• Mirosława El Fray

Beilstein J. Nanotechnol. 2017, 8, 1508–1514, doi:10.3762/bjnano.8.151

• . While graphene oxide can be readily dispersed in aqueous solutions, graphene and rGO require appropriate organic solvents [11]. N-methyl-2-pyrrolidone (NMP) is perhaps the ideal solvent for the exfoliation of graphite and graphene. However, the aggressive nature of this solvent led us to choose ethylene

Calcium fluoride based multifunctional nanoparticles for multimodal imaging

• Marion Straßer,
• Joachim H. X. Schrauth,
• Sofia Dembski,
• Daniel Haddad,
• Bernd Ahrens,
• Stefan Schweizer,
• Bastian Christ,
• Alevtina Cubukova,
• Marco Metzger,
• Heike Walles,
• Peter M. Jakob and
• Gerhard Sextl

Beilstein J. Nanotechnol. 2017, 8, 1484–1493, doi:10.3762/bjnano.8.148

• Malvern Instruments. The DLS measurement was carried out in aqueous solutions. X-ray diffraction measurements were carried out on a Phillips PW 1730/10 employing Cu Kα radiation. The composition of the NPs was determined by ICP-OES using a Varian Wista Pro spectrometer. The crystallinity of the powder

ZnO nanoparticles sensitized by CuInZn_xS_2+x quantum dots as highly efficient solar light driven photocatalysts

• Florian Donat,
• Serge Corbel,
• Halima Alem,
• Steve Pontvianne,
• Lavinia Balan,
• Ghouti Medjahdi and
• Raphaël Schneider

Beilstein J. Nanotechnol. 2017, 8, 1080–1093, doi:10.3762/bjnano.8.110

• -equilibrated and N2-purged aqueous solutions. Supporting Information File 68: Additional figures. Acknowledgements This work is supported by the Agence Nationale pour la Recherche (ANR CD2I 2013, project PRUMOS). The authors thank Dr. Khalid Ferji (LCPM, Université de Lorraine) for the zeta potential

Recombinant DNA technology and click chemistry: a powerful combination for generating a hybrid elastin-like-statherin hydrogel to control calcium phosphate mineralization

• Mohamed Hamed Misbah,
• Mercedes Santos,
• Luis Quintanilla,
• Christina Günter,
• Matilde Alonso,
• Andreas Taubert and
• José Carlos Rodríguez-Cabello

Beilstein J. Nanotechnol. 2017, 8, 772–783, doi:10.3762/bjnano.8.80

• precursor phases [54], or in ethylene glycol [55]. Two studies using aqueous solutions also reported the formation of β-TCP. CP nanoparticles prepared in the presence of Aliquat 336 also seem to consist of β-TCP, at least partly [56]. Poly(acrylic acid) hydrogels immersed in a phosphate solution were also

Dispersion of single-wall carbon nanotubes with supramolecular Congo red – properties of the complexes and mechanism of the interaction

• Anna Jagusiak,
• Barbara Piekarska,
• Tomasz Pańczyk,
• Małgorzata Jemioła-Rzemińska,
• Elżbieta Bielańska,
• Barbara Stopa,
• Grzegorz Zemanek,
• Janina Rybarska,
• Irena Roterman and
• Leszek Konieczny

Beilstein J. Nanotechnol. 2017, 8, 636–648, doi:10.3762/bjnano.8.68

• in aqueous media and creates complexes in which the supramolecular character of CR is retained. Congo red presents unique properties as it forms ribbon-like supramolecular assemblies which are quite stable in aqueous solutions but simultaneously show some plasticity [35], important not only for

α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles

• Jana Lutze,
• Miguel A. Bañares,
• Marcos Pita,
• Andrea Haase,
• Andreas Luch and
• Andreas Taubert

Beilstein J. Nanotechnol. 2017, 8, 627–635, doi:10.3762/bjnano.8.67

• , E) GPC data of CBAmPEG. NMR and IR bands are listed in the Experimental section. TEM images of A) citrate@SNPs and B) CBAmPEG@SNPs. C) Raman spectra of aqueous solutions or suspensions of CBAmPEG, CBAmPEG@SNPs, and citrate@SNPs. A detailed assignment of the Raman bands is given in the Experimental

Uptake of the proteins HTRA1 and HTRA2 by cells mediated by calcium phosphate nanoparticles

• Olga Rotan,
• Katharina N. Severin,
• Simon Pöpsel,
• Alexander Peetsch,
• Melisa Merdanovic,
• Michael Ehrmann and
• Matthias Epple

Beilstein J. Nanotechnol. 2017, 8, 381–393, doi:10.3762/bjnano.8.40

• described in the following, according to synthetic procedures described previously [7][46]. Aqueous solutions of calcium nitrate (6.25 mM; Merck p.a.) and diammonium hydrogen phosphate (3.74 mM; Merck p.a.) were rapidly mixed by pumping them into a glass vessel with a peristaltic pump. The pH of both

Association of aescin with β- and γ-cyclodextrins studied by DFT calculations and spectroscopic methods

• Ana I. Ramos,
• Pedro D. Vaz,
• Susana S. Braga and
• Artur M. S. Silva

Beilstein J. Nanotechnol. 2017, 8, 348–357, doi:10.3762/bjnano.8.37

• variation method In the evaluation of the interaction of cyclodextrin with a guest molecule in aqueous solution, one first needs to investigate the stoichiometry [26]. For this, the continuous variation method (Job plot) [27] was employed. This assay consists in mixing aqueous solutions of host and guest in

• solution, most likely the 2:1 γ-CD/aescin species. Apparent association constant The samples used for the calculation of the apparent association constant (Kapp) comprised aqueous solutions with a fixed concentration of cyclodextrin and variable concentrations of aescin (in excess from five to ten folds

Nanoscale isoindigo-carriers: self-assembly and tunable properties

• Tatiana N. Pashirova,
• Andrei V. Bogdanov,
• Lenar I. Musin,
• Julia K. Voronina,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Vladimir F. Mironov,
• Lucia Ya. Zakharova,
• Shamil K. Latypov and
• Oleg G. Sinyashin

Beilstein J. Nanotechnol. 2017, 8, 313–324, doi:10.3762/bjnano.8.34

• large aggregates of 500 to 700 nm in size. We failed to prepare nanoparticles for high homologues 1g and 3 through the nanoprecipitation technique. It is known that size and morphology of aggregates in aqueous solutions are markedly determined by hydrophilic-lipophilic balance. This is probably due to

Photocatalysis applications of some hybrid polymeric composites incorporating TiO₂ nanoparticles and their combinations with SiO₂/Fe₂O₃

• Andreea Laura Chibac,
• Tinca Buruiana,
• Violeta Melinte and
• Emil C. Buruiana

Beilstein J. Nanotechnol. 2017, 8, 272–286, doi:10.3762/bjnano.8.30

• degrading hydroxybenzene derivatives under UV and visible light, was investigated using hybrid films in aqueous solutions. The motivation for this selection is that the phenolic compounds play a major role among the various organic pollutants that cause environmental hazard, being a part of the widely used

• is completely removed from the aqueous solutions. The lack of photocatalytic activity of S1 (with TiO2) and S2 (TiO2/SiO2) hybrid films under visible light may be related to the absorption of TiO2 NPs in the UV region. On the other hand, the presence of Fe3+ cation extends the UV–vis absorption of

• In a manner analogous to [59], the photocatalytic activity of the synthesized hybrid films was evaluated following the degradation of phenol, hydroquinone or dopamine in aqueous solutions under ambient conditions and UV–visible irradiation. A piece of each composite film (1 g) was added into 50 mL of

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

• Anurag Roy,
• Partha Pratim Das,
• Mukta Tathavadekar,
• Sumita Das and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2017, 8, 210–221, doi:10.3762/bjnano.8.23

• synthesized using a BSA-mediated process under sonication. Aqueous solutions of 0.1 M Cd(NO3)2·4H2O and 1.25 × 10−6 M (BSA) were sonicated (ultrasonic probe, Rivotek, 30 kHz, 250 W) for 45 min followed by immediate dropwise addition of 0.1 M Na2S until the pH of the resultant solution reached ≈4. The

Surface-enhanced Raman scattering of self-assembled thiol monolayers and supported lipid membranes on thin anodic porous alumina

• Marco Salerno,
• Amirreza Shayganpour,
• Barbara Salis and
• Silvia Dante

Beilstein J. Nanotechnol. 2017, 8, 74–81, doi:10.3762/bjnano.8.8

• , to let the sulfur of the –SH group bind covalently to the Au surface (chemisorption). The substrates were then gently washed with their aqueous solutions and dried under nitrogen flow. All the lipids were dissolved in chloroform/methanol 2:1 vol/vol, dried under a gentle nitrogen flux in a test tube

A dioxaborine cyanine dye as a photoluminescence probe for sensing carbon nanotubes

• Mohammed Al Araimi,
• Petro Lutsyk,
• Anatoly Verbitsky,
• Yuri Piryatinski,
• Mykola Shandura and
• Aleksey Rozhin

Beilstein J. Nanotechnol. 2016, 7, 1991–1999, doi:10.3762/bjnano.7.190

• coded in red colour, whereas low intensities are coded in blue colour. The concentration of DOB-719 in panel (b) is 0.001 mg/mL. Absorption spectra in (a) the visible and (b) the NIR range for dispersions of SWNT (1), aqueous solutions of neat DOB-719 (2), as-prepared mixtures of DOB-719 with SWNT (3

• ), and (8,4), respectively. The RET from the dye to the SWNT at λEX = 735 nm is indicated in panels b–d. PLE maps of aqueous solutions for (a) the as-prepared and (b) aged neat DOB-719 as well as (c) the as-prepared and (d) aged mixtures of DOB-719 with SWNTs in water. High PL intensities are coded in

Organoclay hybrid materials as precursors of porous ZnO/silica-clay heterostructures for photocatalytic applications

• Marwa Akkari,
• Pilar Aranda,
• Abdessalem Ben Haj Amara and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2016, 7, 1971–1982, doi:10.3762/bjnano.7.188

• ± 0.5 °C inside the reactor controlled by a thermostatic bath. This temperature below room temperature was chosen to minimize water evaporation. Batch tests were performed using aqueous solutions of MB and ibuprofen. To a volume of 100 mL containing a 3·10−5 mol·L−1 MB water solution, were added 20 mg

Evolution of the graphite surface in phosphoric acid: an AFM and Raman study

• Rossella Yivlialin,
• Luigi Brambilla,
• Gianlorenzo Bussetti,
• Matteo Tommasini,
• Andrea Li Bassi,
• Carlo Spartaco Casari,
• Matteo Passoni,
• Franco Ciccacci,
• Lamberto Duò and
• Chiara Castiglioni

Beilstein J. Nanotechnol. 2016, 7, 1878–1884, doi:10.3762/bjnano.7.180

• spectroscopy investigation. Keywords: atomic force microscopy (AFM); electrochemical atomic force microscopy (EC-AFM); electrochemical delamination of graphite; graphene; phosphoric acid; Raman spectroscopy; Introduction Sulfuric (H2SO4), perchloric (HClO4) and phosphoric (H3PO4) acid in aqueous solutions

3D printing of mineral–polymer bone substitutes based on sodium alginate and calcium phosphate

• Aleksey A. Egorov,
• Alexander Yu. Fedotov,
• Anton V. Mironov,
• Vladimir S. Komlev,
• Vladimir K. Popov and
• Yury V. Zobkov

Beilstein J. Nanotechnol. 2016, 7, 1794–1799, doi:10.3762/bjnano.7.172

• Discussion 3D printing is a powerful tool for the production of custom-designed and complex bone substitutes [2][3]. In our work, the fabrication of 3D composite structures was performed using a binary system based on aqueous solutions of sodium alginate containing PO43− groups. A calcium chloride aqueous

• binary system based on aqueous solutions of sodium alginate. The polymer slurry of sodium alginate (CAS number 9005-38-3) with concentrations of 0.25, 1.0 and 2.0 wt % was prepared in distilled water in presence of glutamic acid (C5H9NO4) (CAS number 56-86-0) with concentrations of 0.25, 1.0 and 2.0 wt

Role of RGO support and irradiation source on the photocatalytic activity of CdS–ZnO semiconductor nanostructures

• Suneel Kumar,
• Rahul Sharma,
• Vipul Sharma,
• Gurunarayanan Harith,
• Vaidyanathan Sivakumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2016, 7, 1684–1697, doi:10.3762/bjnano.7.161

• [11], ozonization [12] and adsorption [13], as these methods are unable to remove the contaminants completely. Some recent studies have reported ZnO as a better photocatalytic material in the degradation of organic dyes in aqueous solutions, because of high charge carrier mobility and significantly

Influence of hydrothermal synthesis parameters on the properties of hydroxyapatite nanoparticles

• Sylwia Kuśnieruk,
• Jacek Wojnarowicz,
• Agnieszka Chodara,
• Tadeusz Chudoba,
• Stanislaw Gierlotka and
• Witold Lojkowski

Beilstein J. Nanotechnol. 2016, 7, 1586–1601, doi:10.3762/bjnano.7.153

• chemistry techniques, such as direct precipitation from aqueous solutions, electrochemical deposition [23], sol–gel processes [24] and hydrothermal synthesis [25][26][27] (Table 1). In the majority of cases, the synthesized powder is a stoichiometric hydroxyapatite, and oftentimes contains additional phases

Development of adsorptive membranes by confinement of activated biochar into electrospun nanofibers

• Mehrdad Taheran,
• Mitra Naghdi,
• Satinder K. Brar,
• Emile Knystautas,
• Mausam Verma,
• Rao. Y. Surampalli and
• Jose. R. Valero

Beilstein J. Nanotechnol. 2016, 7, 1556–1563, doi:10.3762/bjnano.7.149

• affinity towards metallic ions, such as copper and lead [13]. In a similar study, Aliabadi et al. used PEO/Chitosan for NFM fabrication to remove nickel, cadmium, lead and copper from aqueous solutions and reported no considerable change in the adsorption capacity after five cycles [14]. Also, there are

Antitumor magnetic hyperthermia induced by RGD-functionalized Fe₃O₄ nanoparticles, in an experimental model of colorectal liver metastases

• Oihane K. Arriortua,
• Eneko Garaio,
• Borja Herrero de la Parte,
• Maite Insausti,
• Luis Lezama,
• Fernando Plazaola,
• Jose Angel García,
• Jesús M. Aizpurua,
• Maialen Sagartzazu,
• Mireia Irazola,
• Nestor Etxebarria,
• Ignacio García-Alonso,
• Alberto Saiz-López and
• José Javier Echevarria-Uraga

Beilstein J. Nanotechnol. 2016, 7, 1532–1542, doi:10.3762/bjnano.7.147

• hydrodynamic size for Fe3O4@PMAO_RGD (in a 1:10 PBS/H2O solution) nanoparticles increased until the particles reached a diameter of 111 nm. The zeta potential value at 24 h confirms the high stability of the aqueous solutions of Fe3O4@PMAO (−41 mV), but the stability decreases until −15 mV when RGD is adhered

Photothermal effect of gold nanostar patterns inkjet-printed on coated paper substrates with different permeability

• Mykola Borzenkov,
• Anni Määttänen,
• Petri Ihalainen,
• Maddalena Collini,
• Elisa Cabrini,
• Giacomo Dacarro,
• Piersandro Pallavicini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2016, 7, 1480–1485, doi:10.3762/bjnano.7.140

• intense LSPR extinction band in the NIR range (750–1100 nm), finely regulated through the synthesis conditions [18]. Previously, it was demonstrated that this type of GNS is photothermally active under NIR irradiation both in aqueous solutions and as monolayers grafted on dry glass surface, displaying

• linear dependence as a function of laser irradiance up to I ≈ 0.2 W/cm2 [27][28]. This effect was much higher than in case of previously studied GNS aqueous solutions and of monolayers of GNS on a glass surface under NIR irradiation. However, the dependence of the photothermal effect was not linear with

• increase achieved on the printed GNS patterns under ambient conditions compared to the values previously reported for GNS in aqueous solutions [17][30] is likely due to the absence of the thermal dissipation from the bulk solvent (water) that has a high thermal capacity compared to air (see the model

Functional diversity of resilin in Arthropoda

• Jan Michels,
• Esther Appel and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2016, 7, 1241–1259, doi:10.3762/bjnano.7.115

• by single conventional dyes. Chemical reactions with the Masson and Mallory dyes were mentioned to stain resilin red. Staining of resilin with aqueous solutions of methylene blue and toluidine blue is a common method and can provide good information about the presence and distribution of resilin

Influence of synthesis conditions on microstructure and phase transformations of annealed Sr₂FeMoO_6−x nanopowders formed by the citrate–gel method

• Marta Yarmolich,
• Nikolai Kalanda,
• Sergey Demyanov,
• Herman Terryn,
• Jon Ustarroz,
• Maksim Silibin and
• Gennadii Gorokh

Beilstein J. Nanotechnol. 2016, 7, 1202–1207, doi:10.3762/bjnano.7.111

• citric acid monohydrate C6H8O7·H2O (99.9%) as starting materials. First, the aqueous solutions of 0.4 mol dm−3 Sr(NO3)2 and 2 mol dm−3 Fe(NO3)3 were mixed in a molar ratio of Sr/Fe 2:1, and then citric acid was added to the solution in a molar ratio of citric acid/Fe 6.5:1. After this, the 0.2 mol dm−3