High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

• Raid A. Ismail,
• Hanan A. Rawdhan and
• Duha S. Ahmed

Beilstein J. Nanotechnol. 2020, 11, 1596–1607, doi:10.3762/bjnano.11.142

• hydrothermal methods, chemical bath deposition, laser ablation in liquid reverse microemulsion, electrospinning, sol–gel, electrochemical method, template method, sonochemical method, and hydrochemical bath deposition [10][11][12][13]. The size of Ag2S NPs depends on the preparation conditions [14]. Ag2S NPs

Facile biogenic fabrication of hydroxyapatite nanorods using cuttlefish bone and their bactericidal and biocompatibility study

• Satheeshkumar Balu,
• Manisha Vidyavathy Sundaradoss,
• Swetha Andra and
• Jaison Jeevanandam

Beilstein J. Nanotechnol. 2020, 11, 285–295, doi:10.3762/bjnano.11.21

• literature that synthetic and conventional Hap has been prepared by various chemical procedures such as hydrothermal, sol–gel, mechanochemical, reverse microemulsion and precipitation methods, and the resulting material has been proposed to be highly beneficial in hard tissue treatments [3][4][5]. However

Coating of upconversion nanoparticles with silica nanoshells of 5–250 nm thickness

• Cynthia Kembuan,
• Maysoon Saleh,
• Bastian Rühle,
• Ute Resch-Genger and
• Christina Graf

Beilstein J. Nanotechnol. 2019, 10, 2410–2421, doi:10.3762/bjnano.10.231

• + upconversion nanoparticles (UCNP) is presented. The concept enables the precise adjustment of shell thicknesses for the preparation of thick-shelled nanoparticles for applications in plasmonics and sensing. First, an initial 5–11 nm thick shell is grown onto the UCNPs in a reverse microemulsion. This is

• -core particles are obtained. This strategy can be easily transferred to other nanomaterials for the design of plasmonic nanoconstructs and sensor systems. Keywords: reverse microemulsion; silica coating; stepwise growth; thick shells; upconversion nanoparticles; Introduction Lanthanide-based

• in polar media is the reverse microemulsion technique [22][23][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. In a reverse microemulsion, the aqueous solution is confined in uniform, nanosized droplets that are stabilized by a surfactant such as a polyoxyethylene (5) nonylphenylether (trade

Understanding the performance and mechanism of Mg-containing oxides as support catalysts in the thermal dry reforming of methane

• Nor Fazila Khairudin,
• Mohd Farid Fahmi Sukri,
• Mehrnoush Khavarian and
• Abdul Rahman Mohamed

Beilstein J. Nanotechnol. 2018, 9, 1162–1183, doi:10.3762/bjnano.9.108

• material supported on alumina via the reverse microemulsion method and impregnation method in a comparative study. Mg was proven to stabilize Ni on the catalyst surface by preventing the diffusion of Ni particles into the alumina lattice, indirectly suppressing carbon deposition. Table 4 shows the average

• 71% at a reaction temperature of 700 °C. The NiMg/Al2O3 catalyst synthesized via reverse microemulsion showed a CH4 conversion of 58%, which was higher than that of the catalyst prepared via other methods. The obtained ratios of H2/CO for the catalysts prepared using both methods were not markedly

• different, at 0.66–0.67. In terms of the preparation method, the reverse microemulsion method was preferable for the DRM process, owing to the good activity and stability of the catalyst, which minimized carbon deposition and caused considerable interaction between Ni and Mg. Macedo Neto et al. [120

Low-temperature CO oxidation over Cu/Pt co-doped ZrO₂ nanoparticles synthesized by solution combustion

• Amit Singhania and
• Shipra Mital Gupta

Beilstein J. Nanotechnol. 2017, 8, 1546–1552, doi:10.3762/bjnano.8.156

• milling, precipitation, combustion, and reverse microemulsion [30][31][32][33]. Vahidshad et al. [34] synthesized sol–gel-derived Cu–ZrO2 nanoparticles. Similarly, Saha et al. [35] prepared CuO-doped ZrO2 nanoparticles via ball milling. Among the described methods, solution combustion is used frequently

Bright fluorescent silica-nanoparticle probes for high-resolution STED and confocal microscopy

• Isabella Tavernaro,
• Christian Cavelius,
• Henrike Peuschel and
• Annette Kraegeloh

Beilstein J. Nanotechnol. 2017, 8, 1283–1296, doi:10.3762/bjnano.8.130

• or reverse microemulsion synthesis [34]. Using the traditional sol–gel synthesis of silica particles described by Stöber et al. [35], particles are available in the size range of a few tens of nanometres up to the micrometre range. Although the Stöber method can be utilised to obtain particles with a

Silica-coated upconversion lanthanide nanoparticles: The effect of crystal design on morphology, structure and optical properties

• Uliana Kostiv,
• Miroslav Šlouf,
• Hana Macková,
• Alexander Zhigunov,
• Hana Engstová,
• Katarína Smolková,
• Petr Ježek and
• Daniel Horák

Beilstein J. Nanotechnol. 2015, 6, 2290–2299, doi:10.3762/bjnano.6.235

• + nanoparticles were separated by centrifugation, washed three times with hexane and deionized water and transferred in hexane. Synthesis of silica-coated upconversion nanoparticles The surfaces of the OM–NaYF4:Yb3+/Er3+ nanoparticles were coated with silica using a reverse microemulsion method [28] with slight

• successfully coated with a silica shell using the reverse microemulsion method, making them dispersible in water and promising candidates for applications in biology and medicine. TEM micrographs of OM-NaYF4:Yb3+/Er3+ nanoparticles prepared at (a) 250, (b) 300 and (c) 350 °C for 1 h. Particle size distribution

Silica micro/nanospheres for theranostics: from bimodal MRI and fluorescent imaging probes to cancer therapy

• Shanka Walia and
• Amitabha Acharya

Beilstein J. Nanotechnol. 2015, 6, 546–558, doi:10.3762/bjnano.6.57

• magnetically active and, thus, were used extensively for designing multimodal imaging probes. Wu et al. [14] reported a simple reverse microemulsion method and coating process to synthesize silica-coated Gd2(CO3)3:Tb NPs. The synthesis was accomplished by using GdCl3 as a source of the Gd-complex and cetyl

• followed by Chen et al. [36]. 2.6 Iron oxide as magnetic and QDs as fluorescent probe He et al. [37] reported a reverse microemulsion method for the synthesis of core–shell fluorescent magnetic silica-coated NPs. The Fe3O4 NPs were prepared by using FeCl3 and FeSO4 salts following co-precipitation method

• . The thioglycolic acid (TGA)-coated CdTe QDs were synthesized from CdCl2·5H2O. Finally, the desired nanocomposites were coated with silica in a reverse microemulsion process. To check the biological compatibility of these prepared hybrid nanocomposites, these were covalently conjugated with goat

Inorganic Janus particles for biomedical applications

• Isabel Schick,
• Steffen Lorenz,
• Dominik Gehrig,
• Stefan Tenzer,
• Wiebke Storck,
• Karl Fischer,
• Dennis Strand,
• Frédéric Laquai and
• Wolfgang Tremel

Beilstein J. Nanotechnol. 2014, 5, 2346–2362, doi:10.3762/bjnano.5.244

• prohibits the diffusion of water or solvent molecules to the surface of the underlying particle [103]. The hydrophobic particles are encapsulated using the reverse-microemulsion technique, which can be applied to a large variety of core materials [101][104][105][106][107][108]. Consequently, this method can

• easily be transferred to Janus particles: Independently, which metal oxide was grown on gold seeds, the metal oxide domain could be encapsulated selectively by SiO2 using a reverse microemulsion technique (Scheme 1) [38][39]. Due to the different chemical wetting behavior of gold and the metal oxide

Effects of the preparation method on the structure and the visible-light photocatalytic activity of Ag₂CrO₄

• Difa Xu,
• Shaowen Cao,
• Jinfeng Zhang,
• Bei Cheng and
• Jiaguo Yu

Beilstein J. Nanotechnol. 2014, 5, 658–666, doi:10.3762/bjnano.5.77

• , although its XRD pattern exhibits a relatively lower intensity (Figure 1a). In our experiment, a dynamically stable and isotropic W/O reverse microemulsion system is established by using cyclohexane as oil phase, Triton X-100 as surfactant, and n-hexanol as co-surfactant, respectively. Hence a more

• , Triton X-100 serves as a nonionic surfactant in the W/O reverse microemulsion system to avoid the introduction of ionic impurities. These results suggest that the microemulsion method is superior for preparing Ag2CrO4 nanoparticles with homogenous distribution, as compared to the precipitation and