Sensitive Nonenzymatic Electrochemical Glucose Detection Based on Hollow Porous NiO

Nanoscale Research Letters

Yongyao Su¹  Liangliang Tian¹  Yanhua Cai¹  Hengqing Yan¹  Jinkun Zhang¹  Lu Li¹  Wanrong Pu¹  Shenping Wu¹  Gege He¹ 

[1] Research Institute for New Materials Technology, Chongqing University of Arts and Sciences;

关键词: NiO;    Hollow porous architecture;    Coordinating etching and precipitating;    Electrochemical sensor;    Glucose detection;   

DOI  :  10.1186/s11671-017-2406-0

来源: DOAJ

【 摘 要 】

Abstract Transition metal oxides (TMOs) have attracted extensive research attentions as promising electrocatalytic materials. Despite low cost and high stability, the electrocatalytic activity of TMOs still cannot satisfy the requirements of applications. Inspired by kinetics, the design of hollow porous structure is considered as a promising strategy to achieve superior electrocatalytic performance. In this work, cubic NiO hollow porous architecture (NiO HPA) was constructed through coordinating etching and precipitating (CEP) principle followed by post calcination. Being employed to detect glucose, NiO HPA electrode exhibits outstanding electrocatalytic activity in terms of high sensitivity (1323 μA mM−1 cm−2) and low detection limit (0.32 μM). The excellent electrocatalytic activity can be ascribed to large specific surface area (SSA), ordered diffusion channels, and accelerated electron transfer rate derived from the unique hollow porous features. The results demonstrate that the NiO HPA could have practical applications in the design of nonenzymatic glucose sensors. The construction of hollow porous architecture provides an effective nanoengineering strategy for high-performance electrocatalysts.

【 授权许可】

Unknown