Enhanced photoelectrochemical property of ZnO nanorods array synthesized on reduced graphene oxide for self-powered biosensing application

被引：137

作者：

Kang, Zhuo ^{[1
]}

Gu, Yousong ^{[1
]}

Yan, Xiaoqin ^{[1
]}

Bai, Zhiming ^{[1
]}

Liu, Yichong ^{[1
]}

Liu, Shuo ^{[1
]}

Zhang, Xiaohui ^{[1
]}

Zhang, Zheng ^{[1
]}

Zhang, Xueji ^{[2
]}

Zhang, Yue ^{[1
,3
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, 30 Xueyuan Rd, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Res Ctr Bioengn & Sensing Technol, Sch Chem & Biol Engn, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing, Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

来源：

BIOSENSORS & BIOELECTRONICS | 2015年 / 64卷

基金：

中国国家自然科学基金;

关键词：

Photoelectrochemical biosensor; Reduced graphene oxide; ZnO nanorods array; Glutathione; Photoresponse; P-N HETEROJUNCTION; GLUTATHIONE; NANOWIRE; ELECTRODE; FILMS; DNA;

D O I：

10.1016/j.bios.2014.09.055

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We have realized the direct synthesis of ZnO nanorods (ZnO NRs) array on reduced graphene layer (rGO), and demonstrated the enhanced photoelectrochemical (PEC) property of the rGO/ZnO based photoanode under UV irradiation compared with the pristine ZnO NRs array. The introduction of the rGO layer resulted in a favorable energy band structure for electron migration, which finally led to the efficient photoinduced charge separation. Such nanostructure was subsequently employed for self-powered PEC biosensing of glutathione in the condition of 0 V bias, with a linear range from 10 to 200 mu M, a detection limit of 2.17 mu M, as well as excellent selectivity, reproducibility and stability. The results indicated the rGO/ZnO nanostructure is a competitive candidate in the PEC biosensing field. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：499 / 504

页数：6

共 32 条

[1] Use of microchip electrophoresis and a palladium/mercury amalgam electrode for the separation and detection of thiols [J].