引用本文:
王美佳, 刘敏, 王连英, 徐金杰, 白玉白, 李铁津, 李镇文, 瞿美臻. 功能化多壁碳纳米管的光电性质[J]. 应用化学,
2003, 20(4): 318-322.
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.
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.
功能化多壁碳纳米管的光电性质
摘要:
在酸处理后的多壁碳纳米管(MWNT)的表面引入3种基团:羧基、羰基、羟基。研究了功能化后的MWNT的光电性质,MWNT的表面光电压谱(SPS)在检测区域出现2个响应带,分别在红外区1100nm和1500nm。证明了功能化后的MWNT具有光电压活性,并有很好的光致电荷分离特性。同时将功能化的MWNT分别修饰在玻碳(GC)、硼掺杂的金刚石薄膜(BDD)电极上,进行循环伏安扫描,在玻碳电极上得到1对氧化还原峰,峰电位分别为0.084V、-0.130V(vs.SCE)。在硼掺杂的金刚石薄膜电极上得到稳定的2对氧化还原峰,峰电位分别为0.018V、-0.216V(vs.SCE)和0.214V、0.142V(vs.SCE)。结果表明,功能化后的MWNT具有电化学活性。
English
Photoelectrical Property of Functionalized Multiwall Carbon Nanotubes
Abstract:
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.
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