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Citation: WANG Mei-Jia, LIU Min, WANG Lian-Ying, XU Jin-Jie, BAI Yu-Bai, LI Tie-Jin, LI Zhen-Wen, ZAI Mei-Zhen. Photoelectrical Property of Functionalized Multiwall Carbon Nanotubes[J]. Chinese Journal of Applied Chemistry, ;2003, 20(4): 318-322. shu

Photoelectrical Property of Functionalized Multiwall Carbon Nanotubes

1.
a College of Chemistry, Jilin University, Changchun 130023;
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b Shenzhen Nanotech Port Co., Ltd., Shenzhen

Corresponding author: BAI Yu-Bai,
Received Date: 19 June 2002
Available Online: 13 November 2002
Fund Project: 国家自然科学基金(20073016) (20073016)

Multiwall carbon nanotubes (MWNT) were treated with nitric acid,followed by filtration,washing,and drying to give the functionalized nanotubes with three chemical groups-COOH,C=O and -OH being introduced on the surface.The photovoltaic properties of the functionalized MWNT thin film were investigated by surface photovoltage spectroscopy,two photovoltaic response bands were observed at 1100 and 1500 nm respectively.The result demonstrates that the functionlized MWNT has a excellent characteristic of photo-induced charge separation.The electrochemical behavior of functionalized MWNT was studied on a glassy carbon (GC) electrode and a borondoped diamond thin film (BDD) electrode by cyclic voltammetry (CV).Three stable redox peak pairs were recorded:one on modified GC electrode with peakpotentials of 0.084V and -0.130V (vs.SCE),respectively;two on modified BBD electrode with peakpotentials of 0.018V,-0.216V (vs,SCE) and 0.214V,0.142V (vs.SCE),respectively.
- multiwall carbon nanotube,
- surface photovoltage spectrum,
- cyclic voltammetry,
- boron-doped diamond thin film electrode
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