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水体系中官能化多壁碳纳米管光致活性氧研究

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张亚, 周磊, 曾超, 汪祺, 高士祥, 王遵尧, 杨曦. 水体系中官能化多壁碳纳米管光致活性氧研究[J]. 环境化学, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
引用本文: 张亚, 周磊, 曾超, 汪祺, 高士祥, 王遵尧, 杨曦. 水体系中官能化多壁碳纳米管光致活性氧研究[J]. 环境化学, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
shu
ZHANG Ya, ZHOU Lei, ZENG Chao, WANG Qi, GAO Shixiang, WANG Zunyao, YANG Xi. Light-induced production of reactive oxygen species by functionalized multi-walled carban nanotubes in water[J]. Environmental Chemistry, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
Citation: ZHANG Ya, ZHOU Lei, ZENG Chao, WANG Qi, GAO Shixiang, WANG Zunyao, YANG Xi. Light-induced production of reactive oxygen species by functionalized multi-walled carban nanotubes in water[J]. Environmental Chemistry, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
shu

水体系中官能化多壁碳纳米管光致活性氧研究

  • 1.

    南京大学环境学院,污染控制与资源化研究国家重点实验室, 南京, 210023

  • 基金项目:

    国家自然科学基金(20977045,21177056)和中央高校基本科研业务费专项资金(1112021101)资助.

Light-induced production of reactive oxygen species by functionalized multi-walled carban nanotubes in water

  • 1.

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China

  • Fund Project:

  • 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10-14 mol·L-1和10-15 mol·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.
    Abstract: 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 1O2 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 functionalized multi-walled carbon nanotubes (FMWNTs). Furfuryl alcohol and p-chlorobenzoic acid were used as molecular probes of 1O2 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.
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    [2] Lam C W, James J T, McCluskey R, et al. A review of carbon nanotube toxicity and assessment of potential occupational and environmental health risks [J]. Crit Rev Toxicol, 2006, 36(3):189-217
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    [7] Chen C Y, Jafvert C T. Photoreactivity of carboxylated single-walled carbon nanotubes in sunlight: Reactive oxygen species production in water [J]. Environ Sci Technol, 2010, 44(17):6674-6679
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  • 收稿日期:  2013-02-05
张亚, 周磊, 曾超, 汪祺, 高士祥, 王遵尧, 杨曦. 水体系中官能化多壁碳纳米管光致活性氧研究[J]. 环境化学, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
引用本文: 张亚, 周磊, 曾超, 汪祺, 高士祥, 王遵尧, 杨曦. 水体系中官能化多壁碳纳米管光致活性氧研究[J]. 环境化学, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
shu
ZHANG Ya, ZHOU Lei, ZENG Chao, WANG Qi, GAO Shixiang, WANG Zunyao, YANG Xi. Light-induced production of reactive oxygen species by functionalized multi-walled carban nanotubes in water[J]. Environmental Chemistry, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
Citation: ZHANG Ya, ZHOU Lei, ZENG Chao, WANG Qi, GAO Shixiang, WANG Zunyao, YANG Xi. Light-induced production of reactive oxygen species by functionalized multi-walled carban nanotubes in water[J]. Environmental Chemistry, 2013, 32(7): 1253-1256. doi: 10.7524/j.issn.0254-6108.2013.07.018
shu

水体系中官能化多壁碳纳米管光致活性氧研究

  • 1. 南京大学环境学院,污染控制与资源化研究国家重点实验室, 南京, 210023
  • 收稿日期:  2013-02-05
基金项目:

国家自然科学基金(20977045,21177056)和中央高校基本科研业务费专项资金(1112021101)资助.

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10-14 mol·L-1和10-15 mol·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.

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