Fabrication of graphene/carbon nanotube composite modified electrode for selective and sensitive determination of uric acid
A novel composite was firstly synthesized by compositing graphenes (G) and carbon nanotubes (CNTs) and then a new composite modified electrode (G/CNTs/GCE) was prepared by coating the resulting composite on the surface of the glassy carbon electrode (GCE).The composite modified electrode G/CNTs/GCE showed great electrochemical activities which were studied by sensitive determining the electrochemistry behaviors of uric acid (UA).It revealed when the concentration range of UA changed from 1 × 10-7 mol/L to 1 × 10-3 mol/L,the peak currents had linear relationship with the concentration of UA in the phosphate buffer solution (PBS) which the value of pH is 7.0.And the linear equation is ip (μA) =21.55C+28.94 (C:mmol/L),with the related coefficient 0.9964.
graphene carbon nanotube uric acid composite
Zhengxiao Liu Jianfei Xia Zonghua Wang Yanzhi Xia Feifei Zhang Linhua Xia
Laboratory for New Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qi College of Chemical and Environmental Engineering, Qingdao University, Shandong 266071,China
国际会议
厦门
英文
562-565
2012-12-28（万方平台首次上网日期，不代表论文的发表时间）