文献类型：期刊文献

英文题名：Dispersed CuO Nanoparticles on a Silicon Nanowire for Improved Performance of Nonenzymatic H2O2 Detection

作者：Huang, Jianfei[1];Zhu, Yihua[1];Zhong, Hua[1];Yang, Xiaoling[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：6

期号：10

起止页码：7055

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20142317794759);WOS:【SCI-EXPANDED(收录号:WOS:000336639200011)】；

基金：This work was supported by the National Natural Science Foundation of China (Grants 21236003, 21206042, 20925621, and 21176083), the Basic Research Program of Shanghai (Grants 13NM1400700 and 13NM1400701), the Fundamental Research Funds for the Central Universities, and the Shanghai Leading Academic Discipline Project (Project B502).

语种：英文

外文关键词：silicon nanowire; mitigated conglomeration; cupric oxide; precursor-mediated; hydrogen peroxide; nonenzymatic sensor

摘要：A finely dispersed CuO nanoparticle electrocatalyst on a silicon nanowire (SiNW) was achieved via a designed, precursor-mediated strategy by combining metal-assisted chemical etching, electroless deposition, and thermal oxidation. The CuO assembled on silicon nanowires (CuO-SiNWs) showed a competent sensitivity of 22.27 mu A/mM, a wider linear range from 0.01 to 13.18 mM, and a comparable detection limit of 1.6 mu M (3S/N) for nonenzymatic H2O2 detection. The archetype sensor also demonstrated eligible selectivity against common interfering species. By the introduction of the SiNW carrier, which led to mitigated conglomeration of the electrocatalyst and a favorable microstructure of the electrocatalyst-carrier system, improved signal-concentration linearity and higher electrocatalyst utilization efficiency were obtained with CuO-SiNWs. These results demonstrated the feasibility of the synthetic strategy and the potential of the nanocomposite as a promising candidate for H2O2 sensing.