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Reduction of Charge and Discharge Polarization by Cobalt Nanoparticles‐Embedded Carbon Nanofibers for Li–O2 Batteries

24-Jul-2015 | Yun‐Jung Kim, Hongkyung Lee, Dong Jin Lee, Jung‐Ki Park, Hee‐Tak Kim, ChemSusChem, 2015

The Cover picture shows a possible solution to the low round‐trip efficiencies of Li–O2 batteries (the most promising next‐generation battery) owed to the poor reversibility of the formation of the discharge product Li2O2 and the associated high polarization potentials. This can be achieved by ...

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New approach for producing fluorescent gold nanoparticles: Poly(ethylene oxide) homopolymers as reductants in the micelles of amphiphilic fluorosilicone‐containing block copolymers

24-Jul-2015 | Jiawen Zhang, Lingmin Yi, Kai Xu, Jing Li, Dongzhi Lai, Journal of Polymer Science Part A: Polymer Chemistry, 2015

The reduction of gold salts by poly(ethylene oxide) (PEO) homopolymer is very slow and more than 2 days is needed to produce gold nanoparticles (AuNPs). In this work, however, AuNPs are rapidly produced in the micelles of novel amphiphilic ...

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Hexahedron Prism-Anchored Octahedronal CeO2: Crystal Facet-Based Homojunction Promoting Efficient Solar Fuel Synthesis

24-Jul-2015 | Ping Li; Yong Zhou; Zongyan Zhao; Qinfeng Xu; Xiaoyong Wang; Min Xiao; Zhigang Zou, Journal of the American Chemical Society, 2015

An unprecedented, crystal facet-based CeO2 homojunction consisting of hexahedron prism-anchored octahedron with exposed prism surface of {100} facets and octahedron surface of {111} facets was fabricated through solution-based crystallographic-oriented epitaxial growth. The photocatalysis ...

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Electrochemical Determination of Cu(II) Using a Glassy Carbon Electrode Modified with Multiwall Carbon Nanotubes Dispersed in Polyhistidine

23-Jul-2015 | Pablo R. Dalmasso, María L. Pedano, Gustavo A. Rivas, Electroanalysis, 2015

Abstract We report the sensitive and selective quantification of Cu(II) at glassy carbon electrodes (GCE) modified with multiwall carbon nanotubes (MWCNT) dispersed in polyhistidine (Polyhis), (GCE/MWCNTPolyhis) based on the complexation of Cu(II) by the histidine residues and further ...

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[1,2,5]Selenadiazolo[3,4‐b]pyrazines: Synthesis from 3,4‐Diamino‐1,2,5‐selena­diazole and Generation of Persistent Radical Anions

23-Jul-2015 | Lidia S. Konstantinova, Irina E. Bobkova, Yulia V. Nelyubina, Elena A. Chulanova, Irina G. Irtegova, Nadezhda V. Vas ..., European Journal of Organic Chemistry, 2015

Abstract Previously unknown 3,4‐diamino‐1,2,5‐selenadiazole (6) was prepared by hydrolysis of [1,2,5]selenadiazolo[3,4‐c][1,2,5]selenadiazole (7b) and used in synthesis of novel 1,2,5‐selenadiazolo[3,4‐b]pyrazines by the Koerner–Hinsberg reaction covering the parent compound 4 and its ...

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Nanocolloid cake properties determined from step‐up pressure filtration with single‐stage reduction in filtration area

23-Jul-2015 | Eiji Iritani, Nobuyuki Katagiri, Ryota Nakajima, Kuo‐Jen Hwang, Tung‐Wen Cheng, AIChE Journal, 2015

Abstract A sophisticated method was developed for evaluating simultaneously and accurately both the average specific resistance and average porosity of the filter cake formed in unstirred dead‐end ultrafiltration of nanocolloids such as protein solution and nano silica sol. In the method, a ...

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Probing the Protonation State and the Redox-Active Sites of Pendant Base Iron(II) and Zinc(II) Pyridinediimine Complexes

23-Jul-2015 | Mayra Delgado; Samantha K. Sommer; Seth P. Swanson; Robert F. Berger; Takele Seda; Lev N. Zakharov; John D. Gilbertson, Inorganic Chemistry, 2015

Utilizing the pyridinediimine ligand [(2,6-iPrC6H3)N═CMe)(N(iPr)2C2H4)N═CMe)C5H3N] (didpa), the zinc(II) and iron(II) complexes Zn(didpa)Cl2 (1), Fe(didpa)Cl2 (2), [Zn(Hdidpa)Cl2][PF6] (3), [Fe(Hdidpa)Cl2][PF6] (4), Zn(didpa)Br2 (5), and [Zn(Hdidpa)Br2][PF6] (6), Fe(didpa)(CO)2 (7), and ...

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IJERPH, Vol. 12, Pages 8678-8690: Evaluation of Combined Disinfection Methods for Reducing Escherichia coli O157:H7 Population on Fresh-Cut Vegetables

23-Jul-2015 | Petri, Eva ; Rodríguez, Mariola ; García, Silvia, International Journal of Environmental Research and Public Health, 2015

Most current disinfection strategies for fresh-cut industry are focused on the use of different chemical agents; however, very little has been reported on the effectiveness of the hurdle technology. The effect of combined decontamination methods based on the use of different sanitizers ...

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Electrochemical reduction of CO2 to single product using zinc and cobalt oxide as electrocatalysts

21-Jul-2015 | M.K. Purkait; Shyam Kumar Yadav, New Journal of Chemistry, 2015

Present work studies the effect of synthesized Zinc (Zn) electrocatalyst towards reduction of CO2 to products electrochemically (RCPE) using Cobalt oxide (Co3O4) for water oxidation. Zn catalyst was prepared using electrodeposition method of zinc chloride dihydrate (ZnCl2.2H2O) solution. The ...

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Concave Rhombic Dodecahedral Au Nanocatalyst with Multiple High-Index Facets for CO2 Reduction

21-Jul-2015 | Hye-Eun Lee; Ki Dong Yang; Sang Moon Yoon; Hyo-Yong Ahn; Yoon Young Lee; Hyejin Chang; Dae Hong Jeong; Yoon-Sik Lee; ..., ACS Nano, 2015

A concave rhombic dodecahedron (RD) gold nanoparticle was synthesized by adding 4-aminothiophenol (4-ATP) during growth from seeds. This shape is enclosed by stabilized facets of various high-indexes, such as (331), (221), and (553). Because it is driven thermodynamically and stabilized by 4-ATP ...

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