文献类型：期刊文献

英文题名：Solvothermal synthesis of sphere-like CuS microcrystals and improvement as nonenzymatic glucose sensor

作者：Lin, Jiudong[1];Tao, Feifei[1];Wang, Linxia[1];Chen, Lingzhen[1];Ying, Yeqi[1];Zhang, Liqiong[1];Liu, Hailing[1];Xia, Mingyue[1]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2013

卷号：48

期号：16

起止页码：5509

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000319575900013)、、EI(收录号：20132416413737)、Scopus(收录号：2-s2.0-84878664002)、WOS

基金：The authors gratefully acknowledge the financial supports from the projects supported by the National Science Foundation for Young Scientists of China (Grant No. 20901051) and by Zhejiang Provincial Natural Science Foundation of China (Grant No. LY12B01007).

语种：英文

外文关键词：Electrocatalysis - Glass membrane electrodes - Glucose - Glucose sensors - High resolution transmission electron microscopy - Microcrystals - Nanosheets - Scanning electron microscopy - Spheres - Sulfur compounds

外文摘要：In this article, we report the obtention of sphere-like copper sulfide (CuS) microcrystals with 3-5 mu m diameter on a large scale by the solvothermal approach, which is simple, facile, and effective. The as-prepared products are well characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD), indicating that the sphere-like CuS microcrystals are composed of nanosheets with the uniform thickness of about 50 nm and have good morphology and high purity. The factors influencing the formation of the sphere-like CuS microcrystals are investigated in detail using SEM characterizations. Specially adjusting the quantity of thiourea can effectively control the formation of the flower-like, sphere-like, or irregularly spindle-like CuS microcrystals built by nanosheets. Based on the "oriented attachment mechanism," CuS nanosheets are aligned with one another and point toward the spherical center, and further construct the sphere-like CuS microcrystals. The electrocatalytic oxidation of glucose in alkaline medium at the sphere-like CuS microcrystal-modified electrode has been monitored by cyclic voltammograms (CVs). Compared to the bare glassy carbon electrode, a couple of obvious redox peaks and the improved peak currents toward the glucose redox are examined at the sphere-like CuS sensor with the sensitivity of 117.3 mu A cm(-2) mM(-1). The high electrochemical activity, good repetition, and stability indicate that the sphere-like CuS sensor has the potential application in the nonenzymatic glucose sensor.