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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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ChemInform Abstract: High‐Yield Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction by Hierarchically Porous Carbon.

24-Jul-2015 | Yanming Liu, Xie Quan, Xinfei Fan, Hua Wang, Shuo Chen, ChemInform, 2015

Abstract Hierarchically porous carbon (HPC) as a cost‐effective catalyst for the production of H2O2 via electroreduction of O2 in aqueous solution is prepared by solvothermal synthesis of a metal organic framework (MOF‐5) from Zn(NO3)2 and 1,4‐benzenedicarboxylic acid in DMF (autoclave, 100 ...

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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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Electrochemiluminescence Resonance Energy Transfer System: Mechanism and Application in Ratiometric Aptasensor for Lead Ion

21-Jul-2015 | Yan-Mei Lei; Wei-Xing Huang; Min Zhao; Ya-Qin Chai; Ruo Yuan; Ying Zhuo, Analytical Chemistry, 2015

In this paper, a novel electrochemiluminescence resonance energy transfer (ECL-RET) system from O2/S2O82– to a kind of amino-terminated perylene derivative (PTC-NH2) was demonstrated for the first time, which was then applied to construct a ratiometric aptasensor for lead ion (Pb2+) detection. ...

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Effects of Concentration on Like-Charge Pairing of Guanidinium Ions and on the Structure of Water: An All-Atom Molecular Dynamics Simulation Study

20-Jul-2015 | Dibyendu Bandyopadhyay; K. Bhanja; Sadhana Mohan; Swapan K. Ghosh; Niharendu Choudhury, Journal of Physical Chemistry B, 2015

Like-charge ion-pair formation in an aqueous solution of guanidinium chloride (GdmCl) has two important facets. On one hand, it describes the role of the arginine (ARG) side chain in aggregation and dimer formation in proteins, and on the other hand, it lends support for the direct mechanism of ...

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Potato starch-derived almond-shaped carbon nanoparticles for non enzymatic detection of sucrose

19-Jul-2015 | Author(s): Soma Das, Mitali Saha, New Carbon Materials, 2015

Publication date: June 2015 Source:New Carbon Materials, Volume 30, Issue 3 Author(s): Soma Das, Mitali Saha We report the formation of almond-shaped carbon nanoparticles (ASCNs) from peeled potatoes and the fabrication of a highly sensitive and a selective non enzymatic sucrose sensor ...

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Synthesis of BiVO4@C Core–Shell Structure on Reduced Graphene Oxide with Enhanced Visible‐Light Photocatalytic Activity

16-Jul-2015 | Zhihua Sun, Chenzhe Li, Shenmin Zhu, Maenghyo Cho, Zhixin Chen, Kyeongjae Cho, Yongliang Liao, Chao Yin, Di Zhang, ChemSusChem, 2015

Abstract Herein, a facile strategy for the controllable synthesis of BiVO4@C core–shell nanoparticles on reduced graphene oxide (RGO) is reported. The BiVO4 particle size can be controlled in the process by adjusting the volume ratio of glycerol in the sol–gel solution. The glycerol layers ...

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Effect of lanthanide activated nano‐SiO2 on the corrosion behavior of silane‐based hybrid coatings on low carbon steel

14-Jul-2015 | P. Balan, E. S. Chan, M. K. Harun, V. Swamy, R. K. Singh Raman, Materials and Corrosion, 2015

Nano‐silica particles activated with different lanthanide triflates (cerium, lanthanum and yttrium) as fillers in silane sol‐gel coatings were investigated for higher corrosion protection of low carbon steel. Sol‐gel films have been synthesized from cross‐condensation of ...

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Synthesis of Manganese Oxide Microspheres by Ultrasonic Spray Pyrolysis and Their Application as Supercapacitors

14-Jul-2015 | Yinan Zhang, Laura A. Huff, Andrew A. Gewirth, Kenneth S. Suslick, Particle & Particle Systems Characterization, 2015

Manganese oxide (MnO2) microspheres are prepared using an ultrasonic spray pyrolysis (USP) process. A mixed solution of potassium permanganate and hydrochloric acid is nebulized into microsized droplets, which are then carried by air flow through a furnace tube. Each microdroplet serves as one ...

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Hydroquinone and Quinone-Grafted Porous Carbons for Highly Selective CO2 Capture from Flue Gases and Natural Gas Upgrading

14-Jul-2015 | Jun Wang; Rajamani Krishna; Jiangfeng Yang; Shuguang Deng, Environmental Science & Technology, 2015

Hydroquinone and quinone functional groups were grafted onto a hierarchical porous carbon framework via the Friedel–Crafts reaction to develop more efficient adsorbents for the selective capture and removal of carbon dioxide from flue gases and natural gas. The oxygen-doped porous carbons were ...

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