中文摘要：

采用间歇超声法制得水体稳定分散的羟基化多壁碳纳米管（MWNT-OH）和羧基化多壁碳纳米管（MWNT-COOH）悬浮液,并考察了它们在氙灯光照下产生活性氧（ROS）的能力.分别以呋喃醇和对氯苯甲酸为鉴定单重态氧（1O2）和羟基自由基（.OH）的分子探针,测得浓度为mgC.L-1级的碳纳米管悬浮液在模拟阳光辐射下生成1O2和.OH的稳态浓度分别可达10-14mol.L-1和10-15mol.L-1.MWNT-OH和MWNT-COOH生成1O2能力接近,但MWNT-OH光致产生.OH能力高于MWNT-COOH.增加碳纳米管浓度（0.8—8 mgC.L-1）可以提高光致活性氧的稳态浓度.

英文摘要：

Stable aqueous suspensions of hydroxylated multi-walled carbon nanotubes （MWNT-OH） and carboxylated multi-walled carbon nanotubes （MWNT-COOH） were prepared in deionized water via intermittent sonication. Light-induced production of reactive oxygen species （ROS） by MWNT-OH and MWNT-COOH were examined under simulated solar irradiation using a 1000 W Xenon lamp. During 30 h light exposure, steady-state concentrations of 102 and ~ OH were determined at the level of 10 - 14 mol- L- 1 and 10 - 15 mol- L- 1 in the mgC. L-1 suspensions of these two fnnctionalized multi-walled carbon nanotubes （FMWNTs）. Furfuryl alcohol and p-chlorobenzoic acid were used as molecular probes of 102 and · OH, respectively. The results showed that MWNT-OH and MWNT-COOH had similar capacity of producing 1O2 while MWNT-OH generated more ~ OH than MWNT-COOH. Increasing concentrations of FMWNTs promoted the production of ROS.