[Frontiers in Bioscience E2, 339-350, January 1, 2010]

Multilayer CuHCF films bridged by CuMPCs for H2O2 detection

Qin Xu1,2, Bo Liu1, Xiao-Ya Hu2, Jun-Jie Zhu1

1Key Lab of Analytical Chemistry for Life Science(MOE), School of Chemical and Chemistry Engineering, Nanjing University, Nanjing, 210093, P. R. China, 2College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, P. R. China


1. Abstract
2. Introduction
3. Experiment section
3.1. Chemicals
3.2. Instruments
3.3. Preparation of CuMPCs
3.4. Preparation of multilayer CuHCF films
4. Results and discussion
4.1. Characterization of CuMPCs
4.2. Formation of multilayer CuHCF films bridged by CuMPCs
4.3. Application of multilayer CuHCF films as the H2O2 sensor
4.4. Stability of the multilayer CuHCF films
5. Conclusions
6. Acknowledgments
7. References


Multilayer copper hexacyanoferrate (CuHCF) films bridged by cysteine monolayer protected copper clusters (CuMPCs) were prepared by the sequential electrochemical cyclcing and dipping process. Cyclic voltammetry, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to characterize the formation of the multilayer films. Cyclic voltammetric measurements indicated that the films grew exponentially with the increase of the layer numbers. AFM and SEM images revealed that the obtained films were thin and exhibited a three-dimensional structure. The nanostructured thin-film assemblies exhibited interesting catalytic properties that could be applied in important sensing and catalysis. Good catalytic activity and stability of the film modified electrode for hydrogen peroxide detection was studied.