| 纳米ZnO光催化降解有毒有机污染物 |
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| 引用本文： | 邹彩琼,贾漫珂,罗光富,顾彦,黄应平.纳米ZnO光催化降解有毒有机污染物[J].三峡大学学报(自然科学版),2011,33(4):75-80. |
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| 作者姓名： | 邹彩琼 贾漫珂 罗光富 顾彦 黄应平 |
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| 作者单位： | 三峡大学三峡库区生态环境教育部工程研究中心,湖北宜昌,443002 |
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| 基金项目： | 国家自然科学基金(20877048); 湖北省创新群体项目(2009CDA020); 湖北省高等学校优秀中青年科技创新团队计划(T200703) |
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| 摘 要： | 分别以硝酸锌,醋酸锌,氯化锌和硫酸锌为锌源采用水热法制备了纳米ZnO,通过X射线衍射仪（XRD）和透射电子显微镜（TEM）对ZnO进行了表征,结果表明：四类锌源制备的ZnO均为六方晶系的纤锌矿结构,尺寸在23.9～62.6 nm.在紫外光照射下以罗丹明B（Rhodamine B,RhB）和2,4-二氯苯酚（2,4-Dichlorophenol,2,4-DCP）的光催化降解为探针反应,研究了介质pH条件和催化剂用量等对光催化反应的影响,表明pH=6.2和催化剂用量为0.4 g.L-1条件下以硝酸锌为锌源制备的ZnO活性最好,60 min内RhB褪色完全,120 min内2,4-DCP降解率达到97%.通过总有机碳（TOC）的测定,发现6 h内RhB矿化率达到95.2%.采用辣根过氧化物酶（POD）法和苯甲酸荧光光度法分别测定了体系中H2O2和羟基自由基（.OH）的变化,表明其光催化反应机理涉及.OH历程.
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| 关 键 词： | ZnO 光催化 降解 有机污染物 |
Photocatalytic Degradation of Toxic Organic Pollutants by ZnO Nanoparticles |
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| Zou Caiqiong,Jia Manke,Luo Guangfu,Gu Yan,Huang Yingping.Photocatalytic Degradation of Toxic Organic Pollutants by ZnO Nanoparticles[J].Journal of China Three Gorges University(Natural Sciences),2011,33(4):75-80. |
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| Authors: | Zou Caiqiong Jia Manke Luo Guangfu Gu Yan Huang Yingping |
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| Institution: | Zou Caiqiong Jia Manke Luo Guangfu Gu Yan Huang Yingping(Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | ZnO nanoparticles were prepared by hydrothermal method with zinc nitrate,zinc acetate,zinc chloride and zinc sulfate,respectively.The synthesized ZnO nanoparticles were characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM).The results show that all structure of ZnO is hexagonal wurtzite and average diameter is 23.9-62.6 nm.The photocatalytic degradation of Rhodamine B(RhB) and 2,4-Dichlorophenol(2,4-DCP) under UV light is used as probe reactions to evaluate photocatalytic activit... |
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| Keywords: | ZnO photocatalysis degradation organic pollutants |
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