| 核-壳结构的Fe-FeOxH2x-3催化UV/H2O2降解腐殖酸 |
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| 引用本文： | 周磊,杨海红,梁远,聂玉伦,胡春,王东升.核-壳结构的Fe-FeOxH2x-3催化UV/H2O2降解腐殖酸[J].环境科学学报,2007,27(12):1968-1971. |
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| 作者姓名： | 周磊 杨海红 梁远 聂玉伦 胡春 王东升 |
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| 作者单位： | 1. 中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085;中国矿业大学(北京),北京,100083
2. 中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用硼氢化钠还原法制备了核-壳结构的Fe-FeOxH2x-3纳米复合材料,在近紫外光和H2O2催化条件下,对饮用水消毒副产物前驱体腐殖酸的去除比纳米零价铁的去除高.说明零价铁表面铁氧化物能加速界面电子转移,提高反应效率.探讨了H2O2浓度、腐殖酸初始浓度和起始溶液pH对反应速率的影响.研究结果表明,H2O2最佳投加量为5 mmol·L-1,在pH为5～9时,催化剂都显示了较高的活性;腐殖酸不但被脱色降解,而且TOC去除率达到60%,并且生成的中间产物降低了三氯甲烷的生成趋势.
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| 关 键 词： | Fe-FeOxH2x-3 腐殖酸 三氯甲烷生成趋势 |
| 文章编号： | 0253-2468（2007）12-1968-04 |
| 收稿时间： | 2007-09-21 |
| 修稿时间： | 2007-10-11 |
Photo-degradation of humic acid with Fe-FeOxH2x-3 in the presence of H2O2 |
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| ZHOU Lei,YANG Haihong,LIANG Yuan,NIE Yulun,HU Chun and WANG Dongsheng.Photo-degradation of humic acid with Fe-FeOxH2x-3 in the presence of H2O2[J].Acta Scientiae Circumstantiae,2007,27(12):1968-1971. |
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| Authors: | ZHOU Lei YANG Haihong LIANG Yuan NIE Yulun HU Chun and WANG Dongsheng |
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| Institution: | 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085; 2. China University of Mining & Technology,1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085; 2. China University of Mining & Technology,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085 and State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085 |
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| Abstract: | Core-shell Fe-FeOxH2x-3 was prepared of by NaBH4 reductive methods. The catalyst showed higher activity for the removal of humic acid than Nano-zero-valent Iron in the presence of H2O2 under near-ultraviolet (365 nm) light irradiation. The results indicated that iron oxides on the Zero-valent iron surface accelerated interface electrons transfer to enhance the reaction efficiency. The effects of the dosage of H2O2 , initial concentration of humic acid, and initial pH were investigated. The results indicated that the optimal H2O2 dosage was 5mmol·L-1. The catalyst exhibited good catalytic activity when initial solution pH varied from 5 to 9. Humic acid was discoloration and the remove of TOC reached about 60%.The trihalomethane formation potential (THMFP) was declined after the humic acid was treated. |
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| Keywords: | Fe-FeOxH2x-3 humie acid trihalomethane formation potential |
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