Electrochemical co-deposition of reduced graphene oxide-gold nanocomposite on an ITO substrate and its application in the detection of dopamine  

作　　者：Chaoyi Jiang Xiangzhou Zeng Bijun Wu Qiao Zeng Wenhui Pang Jing Tang 

机构地区：[1]Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

出　　处：《Science China Chemistry》2017年第1期151-156,共6页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China(21173048,21073038)

摘　　要：The simultaneous deposition of rGO and gold nano structures has been achieved by electrodeposition from mixed solutions containing graphene oxide(GO)and a gold precursor.Scanning electron microscope(SEM),Raman spectroscopy and atomic force microscopy(AFM)have been employed to reveal the morphology,uniformity and practical stability of the nanocomposite films on the indium tin oxide(ITO)substrate.The AFM data showed heights of tens of nanometers of the nanocomposite,suggesting that multilayers of rGO with gold nanoparticles had been formed as a result of the electrochemical co-deposition.Differential pulse voltammetry(DPV),as a widely used analytical technique,has been carried out on the rGO-Au/ITO electrode for the quantitative detection of dopamine(DA).The detection limit(S/N=3)for the determination of DA was evaluated as 0.6μM.The simultaneous deposition of rGO and gold nano structures has been achieved by electrodeposition from mixed solutions containing graphene oxide（GO）and a gold precursor.Scanning electron microscope（SEM）,Raman spectroscopy and atomic force microscopy（AFM）have been employed to reveal the morphology,uniformity and practical stability of the nanocomposite films on the indium tin oxide（ITO）substrate.The AFM data showed heights of tens of nanometers of the nanocomposite,suggesting that multilayers of rGO with gold nanoparticles had been formed as a result of the electrochemical co-deposition.Differential pulse voltammetry（DPV）,as a widely used analytical technique,has been carried out on the rGO-Au/ITO electrode for the quantitative detection of dopamine（DA）.The detection limit（S/N=3）for the determination of DA was evaluated as 0.6μM.

关 键 词：ELECTRODEPOSITION graphene GOLD nanocomposite films 

分 类 号：TB333[一般工业技术—材料科学与工程] O657.1[理学—分析化学]