Stable controlled growth of 3D CuO/Cu nanoflowers by surfactant-free method for non-enzymatic hydrogen peroxide detection  

作　　者：Ruimei Yuan Hejun Li Xuemin Yin Leilei Zhang Jinhua Lu 

机构地区：[1]State Key Laboratory of Solidification Processing, Carbon/Carbon Composites Research Center, Northwestern Polytechnical University

出　　处：《Journal of Materials Science & Technology》2018年第9期1692-1698,共7页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51521061);the fund of the State Key Laboratory of Solidification Processing in NWPU (Grant No. SKLSP201417);the "111" project (Grant No. 08040);the Seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University (Grant No. Z2017009)

摘　　要：Sensitive, convenient and rapid detection of hydrogen peroxide（H2 O2） is highly desirable in fields like fundamental biological research, food industries, and clinical environmental analysis. Herein, a hierarchical porous CuO/Cu flower-like active electrode material for non-enzymatic H2 O2 sensor was synthesized via a low-cost and one-step chemical oxidation of Cu powder in water bath without surfactants. In order to discuss the growth mechanism of the product, products with different growth time length were fabricated. The electro-catalysis of all products were first exhibited by cyclic-voltammetry,and the product under 6 h reaction shows the best result. The detailed electro-catalytic behaviors of the best product（under 6 h reaction） are characterized by cyclic-voltammetry and amperometry under alkaline conditions. The materials have high sensitivity of 103 μA mM^（-1） cm^（-2）（R^2= 0.9979）, low detection limit of 2 μmol/L and wide concentration range（from 2 μmol/L to 19.4 mmol/L）. Large specific surface area and stabled nanostructure enabled good features, such as stability and sensitivity for the H2 O2 determination.Sensitive, convenient and rapid detection of hydrogen peroxide（H2 O2） is highly desirable in fields like fundamental biological research, food industries, and clinical environmental analysis. Herein, a hierarchical porous CuO/Cu flower-like active electrode material for non-enzymatic H2 O2 sensor was synthesized via a low-cost and one-step chemical oxidation of Cu powder in water bath without surfactants. In order to discuss the growth mechanism of the product, products with different growth time length were fabricated. The electro-catalysis of all products were first exhibited by cyclic-voltammetry,and the product under 6 h reaction shows the best result. The detailed electro-catalytic behaviors of the best product（under 6 h reaction） are characterized by cyclic-voltammetry and amperometry under alkaline conditions. The materials have high sensitivity of 103 μA mM^（-1） cm^（-2）（R^2= 0.9979）, low detection limit of 2 μmol/L and wide concentration range（from 2 μmol/L to 19.4 mmol/L）. Large specific surface area and stabled nanostructure enabled good features, such as stability and sensitivity for the H2 O2 determination.

关 键 词：CuO nanoparticles SURFACTANT-FREE Electrical properties Sensors H2O2 

分 类 号：TB2[一般工业技术—工程设计测绘]