نتایج جستجو برای: graphene oxide decorated with ceo2 nanoparticles

تعداد نتایج: 9350984  

Journal: :Journal of visualized experiments : JoVE 2015
Dinesh Kumar Ah-Reum Lee Sandeep Kaur Dong-Kwon Lim

Present work demonstrates the simple, chemical free, fast, and energy efficient method to produce reduced graphene oxide (r-GO) solution at RT using visible light irradiation with plasmonic nanoparticles. The plasmonic nanoparticle is used to improve the reduction efficiency of GO. It only takes 30 min at RT by illuminating the solutions with Xe-lamp, the r-GO solutions can be obtained by compl...

Journal: :Chemistry 2015
Jiale Wang Fabiane J Trindade Caroline B de Aquino Joana C Pieretti Sergio H Domingues Romulo A Ando Pedro H C Camargo

Hybrid materials in which reduced graphene oxide (rGO) is decorated with Au nanoparticles (rGO-Au NPs) were obtained by the in situ reduction of GO and AuCl4(-)(aq) by ascorbic acid. On laser excitation, rGO could be oxidized as a result of the surface plasmon resonance (SPR) excitation in the Au NPs, which generates activated O2 through the transfer of SPR-excited hot electrons to O2 molecules...

2016
Min Ho Pyun Yong Joon Park

In this article, we report a facile approach to enhance the electrochemical performance of Li-rich oxides with vulnerable phase stability. The Li-rich oxide nanoparticles were attached to the surface of graphene; the graphene surface acted as a matrix with high electronic conductivity that compensated for the low conductivity and enhanced the rate capability of the oxides. Our novel approach co...

2011
Yan Li Xiao-Rong Liu Xiao-Hui Ning Can-Can Huang Jian-Bin Zheng Jun-Cai Zhang

An electrochemical sensor incorporating a signal enhancement for the determination of lead (II) ions (Pb2+) was designed on the basis of the thrombin-binding aptamer (TBA) as a molecular recognition element and ionic liquid supported cerium oxide (CeO2) nanoparticles-carbon nanotubes composite modification. The composite comprises nanoparticles CeO2, multi-wall carbon nanotubes (MWNTs) and hydr...

2013
M. Yahia M. Abdelrahim Stephen R. Benjamin Laura M. Cubillana-Aguilera Ignacio Naranjo-Rodríguez José L. Hidalgo-Hidalgo de Cisneros Juan José Delgado José M. Palacios-Santander

The present work reports a study of the electrocatalytic activity of CeO2 nanoparticles and gold sononanoparticles (AuSNPs)/CeO2 nanocomposite, deposited on the surface of a Sonogel-Carbon (SNGC) matrix used as supporting electrode and the application of the sensing devices built with them to the determination of ascorbic acid (AA) used as a benchmark analyte. Cyclic voltammetry (CV) and differ...

2013
James L Gole William Laminack

Nanostructure-decorated n-type semiconductor interfaces are studied in order to develop chemical sensing with nanostructured materials. We couple the tenets of acid/base chemistry with the majority charge carriers of an extrinsic semiconductor. Nanostructured islands are deposited in a process that does not require self-assembly in order to direct a dominant electron-transduction process that f...

Journal: :Chemical communications 2011
Yuhua Xue Hao Chen Dingshan Yu Shuangyin Wang Michal Yardeni Quanbin Dai Mingming Guo Yong Liu Fan Lu Jia Qu Liming Dai

Fe(2+) cations in FeCl(2) or FeSO(4) were oxidized by graphene oxide, leading to an in situ deposition of Fe(3)O(4) nanoparticles onto the self-reduced graphene oxide (rGO) sheets. The resultant Fe(3)O(4)/rGO sheets were demonstrated to possess interesting magnetic and electrochemical properties attractive for a large variety of potential applications.

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