Wang Zao, Xie Fengyu, Liu Zhiang, Du Gu, Asiri Abdullah M, Sun Xuping
College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, China.
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, Sichuan, China.
Chemistry. 2017 Nov 16;23(64):16179-16183. doi: 10.1002/chem.201704038. Epub 2017 Oct 23.
It is highly attractive to construct natural enzyme-free nanoarray architecture as a 3D catalyst for hydrogen peroxide detection due to its great specific surface area and easy accessibility to target molecules. In this communication, we demonstrate that nickel borate nanoarray supported on carbon cloth (Ni-Bi/CC) behaves as an efficient catalyst electrode for H O electro-reduction in neutral media. As a non-enzymatic electrochemical H O sensor, such Ni-Bi/CC shows superior sensing performances with a fast response time (less than 3 s), a low detection limit (0.85 nm, S/N=3), and a high sensitivity (18320 μA mm cm ). Importantly, it also demonstrates favourable reproducibility and long-term stability.
构建无天然酶的纳米阵列结构作为用于过氧化氢检测的三维催化剂极具吸引力，因为其具有很大的比表面积且目标分子易于接近。在本通讯中，我们证明了负载在碳布上的硼酸镍纳米阵列（Ni-Bi/CC）在中性介质中作为用于H₂O₂电还原的高效催化剂电极。作为一种非酶电化学H₂O₂传感器，这种Ni-Bi/CC表现出优异的传感性能，响应时间快（小于3秒）、检测限低（0.85 nM，S/N = 3）且灵敏度高（18320 μA mM⁻¹ cm⁻²）。重要的是，它还表现出良好的重现性和长期稳定性。
