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Electrochemically aminated glassy carbon electrode for simultaneous determination of hydroquinone and catechol

25-Nov-2015 | xiuyun wang; Min Xi; Mengmeng Guo; Fangmeng Sheng; Guang Xiao; Shuo Wu; Shunichi Uchiyama; Hiroaki Matsuura, Analyst, 2015

In this contribution, a very simple and reliable strategy based on the easy modification of glassy carbon electrode (GCE) by pre-electrolyzing GCE in ammonium carbamate aqueous solution was employed for the simultaneous determination of hydroquinone (HQ) and catechol (CC). Compared with bare GCE, ...


Floating photovoltaic arrays to power the mining industry: A case study for the McFaulds lake (Ring of Fire)

20-Nov-2015 | Kim Trapani, Dean L. Millar, Environmental Progress, 2015

The article looks at the integration of crystalline and thin film (a‐Si) floating photovoltaic (PV) arrays for electricity generation in remote mine sites. Floating PV arrays rather than regular ground mounted PV arrays are considered more suitable for the site because it decreases the ...


Mesoporous Carbon Nanospheres Featured Fluorescent Aptasensor for Multiple Diagnosis of Cancer in Vitro and in Vivo

20-Nov-2015 | Chengyi Li; Ying Meng; Shanshan Wang; Min Qian; Jianxin Wang; Weiyue Lu; Rongqin Huang, ACS Nano, 2015

Multiple diagnosis of cancer by a facile fluorescent sensor is extremely attractive. Herein, a Cy3-labeled ssDNA probe (P0-Cy3) was π–π stacked on the surface of oxidized mesoporous carbon nanospheres (OMCN) to construct the fluorescent “turn-on” aptasensor. Attributing to the intrinsic ...


Preparation of a CuInS2 Nanoparticle Ink and Application in a Selenization‐Free, Solution‐Processed Superstrate Solar Cell

19-Nov-2015 | Amir Hossein Cheshme Khavar, Ali Reza Mahjoub, Fariba Tajabadi, Mehdi Dehghani, Nima Taghavinia, European Journal of Inorganic Chemistry, 2015

Abstract We report a study on chalcopyrite solar cells fabricated by low‐cost, nonvacuum, and selenization‐free methods. Superstrate‐type CuInS2 (CIS) thin‐film solar cells were prepared by sequential ink deposition. The CIS film was formed from a stable low‐carbon ink, which was synthesized ...


Synthesis and characterization of carbon‐doped ZnSn(OH)6 with enhanced photoactivity by hydrothermal method

18-Nov-2015 | Hongxia Lu, Jun Lei, Xuexue Li, Gang Shao, Tiecui Hou, Bingbing Fan, Deliang Chen, Liwei Zhang, Hailong Wang, Hongli ..., Crystal Research and Technology, 2015

Well‐dispersed carbon‐doped ZnSn(OH)6 submicrocubes were successfully synthesized through a facile and economical hydrothermal method at 433K, which used green chemical glucose (C6H12O6) as the carbon‐doping source. Photocatalytic activity of the as‐synthesized C‐doped ZnSn(OH)6 was evaluated by ...


Phosphorous–Nitrogen‐Codoped Carbon Materials Derived from Metal–Organic Frameworks as Efficient Electrocatalysts for Oxygen Reduction Reactions

18-Nov-2015 | Yu'ang Fu, Yan Huang, Zhonghua Xiang, Guangqing Liu, Dapeng Cao, European Journal of Inorganic Chemistry, 2015

Abstract Despite the impressive progress in the development of doped carbon catalysts for the oxygen reduction reaction (ORR), the current mono‐heteroatom‐doped carbon‐based catalysts are still far from satisfactory for large‐scale applications in fuel cells. The development of ...


Synthesis of Nitrogen-Doped Graphene Quantum Dots at Low Temperature for Electrochemical Sensing Trinitrotoluene

18-Nov-2015 | Zhewei Cai; Fumin Li; Ping Wu; Lijuan Ji; Hui Zhang; Chenxin Cai; Dominic F. Gervasio, Analytical Chemistry, 2015

Nitrogen-doped graphene quantum dots (N-GQDs) are synthesized at low temperature as a new catalyst allowing electrochemical detection of 2,4,6-trinitrotoluene (TNT). N-GQDs are made by an oxidative ultrasonication of graphene oxide (GO) forming nanometer-sized species, which are then chemically ...


Order of Activity of Nitrogen, Iron Oxide, and FeNx Complexes towards Oxygen Reduction in Alkaline Medium

17-Nov-2015 | Yansong Zhu, Bingsen Zhang, Da‐Wei Wang, Dang Sheng Su, ChemSusChem, 2015

Abstract In alkaline medium, it seems that both metal‐free and iron‐containing carbon‐based catalysts, such as nitrogen‐doped nanocarbon materials, FeOx‐doped carbon, and Fe/N/C catalysts, are active for the oxygen reduction reaction (ORR). However, the order of activity of these different ...


Ionic Self‐Assembly and Red‐Phosphorescence Properties of a Charged Platinum(II) 8‐Quinolinol Complex Associated with Ammonium‐Based Amphiphiles

10-Nov-2015 | Franck Camerel, Antoine Vacher, Olivier Jeannin, Joaquín Barberá, Marc Fourmigué, Chemistry - A European Journal, 2015

Abstract A series of ionic associates based on the platinum(II) chelate of 5‐sulfo‐8‐quinolinol, [Pt(qS)2]2−, and ammonium‐based amphiphiles is described. At variance with the prototypical neutral complex Pt(q)2 (q=8‐quinolinol), these dianionic fluorophores, functionalized at the periphery ...


Voltammetric pH Nanosensor

10-Nov-2015 | Magdalena Michalak; Malgorzata Kurel; Justyna Jedraszko; Diana Toczydlowska; Gunther Wittstock; Marcin Opallo; Wojci ..., Analytical Chemistry, 2015

Nanoscale pH evaluation is a prerequisite for understanding the processes and phenomena occurring at solid–liquid, liquid–liquid, and liquid–gas interfaces, e.g., heterogeneous catalysis, extraction, partitioning, and corrosion. Research on the homogeneous processes within small volumes such as ...


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