单壁碳纳米管的光化学活性研究

本文采用间歇式超声法制得能够在水体中稳定分散的单壁碳纳米管,考察了单壁碳纳米管在模拟太阳光照下产生活性氧的能力.分别以呋喃醇和对氯苯甲酸为探针,发现在模拟太阳光下单壁碳纳米管能够产生单线态氧和羟基自由基,其产生单线态氧的能力与自身浓度成正比,是相同浓度SRFA的1/9~1/5,单壁碳纳米管产生羟基自由基的能力与自身浓度成反比,是相同浓度SRFA的2/5~1/2.

The Study on the Photochemical Reaction of Single-Well Carbon Nanotubes

In this study,we obstained stable Single-Well Carbon Nanotubes dispersion solutions using intermittent ultrasonic method and investigated the ability of producing reactive oxygen species for Single-Well Carbon Nanotubes under irradiation of simulated sunlight.Singlet oxygen and hrdroxyl radical were detected by using furanol and p-chlorobenzoic acid as radical probe.The capacity of producing singlet oxygen by SWNTs suspensions was proportional to the concentration of SWNTs,only 1/9~1/5 of that of SRFA.The capacity of producing hydroxyl radical by SWNTs suspensions was adversely proportional to the concentration of SWNTs,only 2/5~1/2 of that of SRFA.