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| PW_(12)/SiO_2光催化降解水中苯酚 | |
| 引用本文： | 王炜,朱秀华,程为,薛钰芝,彭孝军,张蓉.PW_(12)/SiO_2光催化降解水中苯酚[J].环境科学与技术,2010,33(3). |
| 作者姓名： | 王炜 朱秀华 程为 薛钰芝 彭孝军 张蓉 |
| 作者单位： | 1. 大连交通大学环境与化学工程学院,辽宁,大连,116028 2. 大连交通大学环境与化学工程学院,辽宁,大连,116028;大连理工大学精细化工国家重点实验室,辽宁,大连,116012 3. 大连理工大学精细化工国家重点实验室,辽宁,大连,116012 |
| 基金项目： | 大连理工大学国家重点实验室开放课题项目资助 |
| 摘 要： | 采用溶胶-凝胶法制备了二氧化硅负载H3PW12O40催化剂,并采用红外光谱、XRD及BET对其进行了表征。研究了其对水中苯酚的光催化降解性。讨论了负载催化剂用量、光照时间对苯酚和TOC去除率的影响。结果表明:PW12/SiO2负载型催化剂用量为3g/L,光照6h,10mg/L苯酚水溶液中苯酚去除率为93.06%,TOC去除率为73.20%。PW12/SiO2多相光催化10mg/L苯酚水溶液降解反应和苯酚水溶液直接光解反应均为一级动力学反应。 |
| 关 键 词： | 光催化 磷钨酸 二氧化硅 溶胶-凝胶法 苯酚 |
Photocatalytic Degradation of Phenol in Aqueous Solution with Silica-included Keggin-type Heteropolyacid |
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| WANG Wei,ZHU Xiu-hua,CHENG Wei,XUE Yu-zhi,PENG Xiao-jun,ZHANG Rong.Photocatalytic Degradation of Phenol in Aqueous Solution with Silica-included Keggin-type Heteropolyacid[J].Environmental Science and Technology,2010,33(3). | |
| Authors: | WANG Wei ZHU Xiu-hua CHENG Wei XUE Yu-zhi PENG Xiao-jun ZHANG Rong |
| Institution: | WANG Wei1,ZHU Xiu-hua1,2,CHENG Wei1,XUE Yu-zhi1,PENG Xiao-jun2,ZHANG Rong2 (1. School of Environmental and Chemical Engineering,Dalian Jiaotong University,Dalian 116028,China,2. State Key Lab of Fine Chemicals,Dalian University of Technology,Dalian 116012,China) |
| Abstract: | PW12 /SiO2 is prepared with polyoxometalate (H3PW12O40)with Keggin structure,which is immobilized into a silica matrix by means of sol-gel technique,is used as a sort of catalyst in photocatalytic degradation of phenol in water,which is then characterized by infra-red spectrum,XRD and BET. This paper describes a bench scale study in this way and the result shows that 10mg/L of phenol in water is removed by 93.06% under the photocatalysis condition:3g/L of PW12/SiO2 in solution,6 hours of illumination. It is... |
| Keywords: | photocatalysis phosphotungstic acid silicon dioxide sol-gel method phenol |
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