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Effect of operating conditions on size and morphology of amylose nanoparticles prepared by precipitation

12-12-2014 | Yan Dong, Yanjiao Chang, Qian Wang, Jin Tong, Jiang Zhou, Starch - Stärke, 2014

Nano‐sized amylose particles were prepared by precipitating amylose solution (using DMSO/water mixture as solvent) with absolute ethanol. Effects of operating conditions, including temperature and solvent composition for preparing amylose solution, amylose concentration, ethanol amount used for ...

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Strategic Design of Three-Dimensional (3D) Urchin-Like Pt–Ni Nanoalloys: How This Unique Nanostructure Boosts the Bulk Heterojunction Polymer Solar Cells Efficiency to 8.48%

12-12-2014 | Shang-Wei Chou; Hsieh-Chih Chen; Zhiyun Zhang; Wei-Hsuan Tseng; Chih-I Wu; Ya-Yun Yang; Ching-Yen Lin; Pi-Tai Chou, Chemistry of Materials, 2014

In this study, a simple and systematic shape-controlled synthetic protocol for tailoring nanoscale structures to generate large and monodispersed of three-dimensional (3D) urchin-like Pt–Ni multipods (MPs) and spherical nanoparticles (NPs) is reported, for which the mechanism of production is ...

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Quadruple-Stimuli-Sensitive Polymeric Nanocarriers for Controlled Release under Combined Stimulation

12-12-2014 | Ziquan Cao; Hao Wu; Jie Dong; Guojie Wang, Macromolecules, 2014

Here we report a novel quadruple-stimuli-responsive block copolymer nanocarrier sensitive to pH, temperature, light, and reducing agent. The well-defined amphiphilic diblock copolymer poly(2-nitrobenzyl methacrylate)-SS-poly(dimethylaminoethyl methacrylate) (PNBM-SS-PDMAEMA) was synthesized via ...

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Fe(III) Hydroxide Nucleation and Growth on Quartz in the Presence of Cu(II), Pb(II), and Cr(III): Metal Hydrolysis and Adsorption

11-12-2014 | Chong Dai; Yandi Hu, Environmental Science & Technology, 2014

Fe(III) hydroxide nanoparticles are an essential carrier for aqueous heavy metals. Particularly, iron hydroxide precipitation on mineral surfaces can immobilize aqueous heavy metals. Here, we used grazing-incidence small-angle X-ray scattering (GISAXS) to quantify nucleation and growth of iron ...

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Thermally Triggered Self-Assembly of Folded Proteins into Vesicles

11-12-2014 | Won Min Park; Julie A. Champion, Journal of the American Chemical Society, 2014

We report thermally triggered self-assembly of folded proteins into vesicles that incorporates globular proteins as building blocks. Leucine zipper coiled coils were combined with either globular proteins or elastin-like polypeptides as recombinant fusion proteins, which form “rod–coil” and ...

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Small-Angle Neutron Scattering Studies of Mineralization on BSA Coated Citrate Capped Gold Nanoparticles Used as a Model Surface for Membrane Scaling in RO Wastewater Desalination

11-12-2014 | Y. N. Dahdal; V. Pipich; H. Rapaport; Y. Oren; R. Kasher; D. Schwahn, Langmuir, 2014

Bovine serum albumin (BSA) coated on citrate capped gold nanoparticles (BSA-GNPs) was exposed to a simulated wastewater effluent (SSE) in order to study the mineralization and thereby mimic scaling at biofouled membranes of reverse osmosis (RO) wastewater desalination plants. RO is a leading ...

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Shape-controlled synthesis of phosphor K2SiF6:Mn4+ nanorods and their luminescence properties

10-12-2014 | Xiaoqing Li; Xiangming Su; Ping Liu; Jie Liu; Zhiling Yao; Jiajun Chen; Hui Yao; Xibin Yu; Ming Zhan, CrystEngComm, 2014

A series of efficient red phosphor K2SiF6:Mn4+ nanoparticles with uniform morphology and dispersity were successfully prepared through a fast liquid–solid solution route at room temperature. Potassium oleate and SiO2 spheres/KMnO4 molar ratio play an important role in the formation of the nanorod ...

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Superior optical properties of Fe3+–W18O49 nanoparticles prepared by solution combustion synthesis

09-12-2014 | Pengqi Chen; Mingli Qin; Ye Liu; Baorui Jia; Zhiqin Cao; Qi Wan; Xuanhui Qu, New Journal of Chemistry, 2014

Modification by metal-doping allows the design of new nanomaterials with enhanced optical properties. In this paper, the photocatalytic effects of Fe3+-doped W18O49 nanorods prepared by solution combustion synthesis were studied for the first time. The Fe3+-doped W18O49 powders were investigated ...

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ChemInform Abstract: Phase‐Selective Synthesis of Cu2ZnSnS4 Nanocrystals Using Different Sulfur Precursors.

04-12-2014 | Zhenggang Li, Alvic Lim Kar Lui, Kwan Hang Lam, Lifei Xi, Yeng Ming Lam, ChemInform, 2014

Abstract Kesterite Cu2ZnSnS4 nanoparticles, wurtzite Cu2ZnSnS4 nanoparticles, as well as Cu2ZnSnS4 particles with a mixture of both structures are prepared by hot injection of the sulfur source into an oleylamine (OA) solution of Cu(OAc)2, ZnCl2, and SnCl4 using elemental sulfur, ...

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SERS and FDTD simulation of gold nanoparticles grafted on germanium wafer via galvanic displacement

04-12-2014 | Zhaoshun Zhang, Fan Liao, Shuzhen Ma, Suning Gao, Mingwang Shao, Surface and Interface Analysis, 2014

Uniform and dense Au nanoparticles grown on Ge (Au/Ge) were fabricated by a facile galvanic displacement method and employed as surface‐enhanced Raman scattering (SERS) substrates. The substrates exhibited excellent reproducibility in the detection of rhodamine 6G aqueous solution with a ...

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