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Citation: Niu Jia-Li, Zou Hong-Ling, Zhang Jin, Liu Zhong-Fan. Tracing the Chemical Oxidation Process of Single-walled Carbon Nanotubes by Silver Nanoparticles[J]. Acta Physico-Chimica Sinica, ;2004, 20(01): 1-4. doi: 10.3866/PKU.WHXB20040101 shu

Tracing the Chemical Oxidation Process of Single-walled Carbon Nanotubes by Silver Nanoparticles

1.
Center for Nanoscale Science and Technology（CNST）， College of Chemistry ＆ Molecular Engineering， Peking University， Beijing　100871

Received Date: 3 September 2003
Available Online: 15 January 2004

We proposed here a simple technique for tracing the chemical oxidation process of single-walled carbon nanotubes (SWNTs) by using silver nanoparticles. SWNTs were prepared by chemical vapor deposition (CVD) and dilute nitricacid (2.6 mol•L－1) was used as oxidant for introducing carboxylic acid groups at the end or surface of the tubes. Based on the interaction between －COOH groups and silver nanoparticles, the oxidation procedure can be traced successfully. The results suggest that refluxing of SWNTs in HNO3 may introduce carboxylic acid groups mostly at the original defect sites and few defects is newly created along the SWNTs walls.
- SWNTs;Oxidation;Ag nanoparticles;Defect
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