| TiO2/g-C3N4在泡沫陶瓷表面的负载及光催化空气净化性能增强 |
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| 引用本文： | 孙艳娟,王瑞,董帆,何詠基,吴忠标.TiO2/g-C3N4在泡沫陶瓷表面的负载及光催化空气净化性能增强[J].环境科学学报,2017,37(6):2265-2274. |
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| 作者姓名： | 孙艳娟 王瑞 董帆 何詠基 吴忠标 |
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| 作者单位： | 重庆工商大学催化与环境新材料重庆市重点实验室, 环境与资源学院, 重庆 400067,重庆工商大学催化与环境新材料重庆市重点实验室, 环境与资源学院, 重庆 400067,重庆工商大学催化与环境新材料重庆市重点实验室, 环境与资源学院, 重庆 400067,香港教育大学科学与环境研究学系, 香港 999077,浙江大学环境工程系, 环境污染修复与生态健康教育部重点实验室, 杭州 310027 |
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| 基金项目： | 国家重点研发计划项目（No.2016YFC0204702）；国家自然科学基金（No.21501016，51478070，51108487） |
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| 摘 要： | 以市售P25(TiO_2)和g-C_3N_4为原料,以多孔氧化铝泡沫陶瓷为载体,进行了负载型光催化组件的设计与环境应用.运用浸渍提拉-热处理法制备负载P25/g-C_3N_4的泡沫陶瓷组件,对其微结构进行了表征测试,并将其应用于空气中NO的去除.结果表明,P25/g-C_3N_4在氧化铝泡沫陶瓷表面负载牢固,P25/g-C_3N_4禁带结构匹配有利于光生电荷的分离.研究了P25/g-C_3N_4比例对光催化性能的影响,当g-C_3N_4占P25的量为30%时,负载组件的光催化性能最佳,对NO的去除率达到79.6%.在5次循环反应后,负载型光催化剂表现出良好的稳定性.本研究为P25/g-C_3N_4复合光催化剂的空气净化应用提供了思路和技术基础.
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| 关 键 词： | 载体 负载 TiO2/g-C3N4 可见光催化 NO污染 |
| 收稿时间： | 2016/8/15 0:00:00 |
| 修稿时间： | 2016/9/20 0:00:00 |
Immobilization of TiO2/g-C3N4 on the surface of ceramic foam and the enhanced photocatalytic performance for air purification |
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| SUN Yanjuan,WANG Rui,DONG Fan,HO Wingkei and WU Zhongbiao.Immobilization of TiO2/g-C3N4 on the surface of ceramic foam and the enhanced photocatalytic performance for air purification[J].Acta Scientiae Circumstantiae,2017,37(6):2265-2274. |
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| Authors: | SUN Yanjuan WANG Rui DONG Fan HO Wingkei and WU Zhongbiao |
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| Institution: | Chongqing Key Laboratory of Catalysis and New Functional Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067,Chongqing Key Laboratory of Catalysis and New Functional Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067,Chongqing Key Laboratory of Catalysis and New Functional Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067,Department of Science and Environmental Studies, The Hong Kong University of Education, Hong Kong 999077 and Department of Environmental Engineering, Key Laboratory of Polluted Environment Remediation and Ecological Health of Ministry of Education, Zhejiang University, Hangzhou 310027 |
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| Abstract: | The immobilized photocatalytic device was designed and applied in environmental purification using commercially available P25 (TiO2) as raw materials and porous Al2O3 ceramic foam as support. The immobilized P25/g-C3N4 ceramic foam device was prepared by a soak-pulling-thermal treatment method. The microstructure of P25/g-C3N4 ceramic foam was characterized, and it was applied in removal of NO in air. The results indicated that the P25/g-C3N4 was immobilized on the ceramic foam firmly and the band structure matching between P25 and g-C3N4 could promote the charge separation. The effects of the P25/g-C3N4 mass ratio were investigated. When the content of g-C3N4 was controlled at 30%, the photocatalytic device could achieve the optimized performance with a NO removal ratio of 79.6%. After five recycled runs, the photocatalytic device could maintain the high stability. The present work could provide new perspective and technological basis for the air purification application of P25/g-C3N4 composites photocatalysts. |
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| Keywords: | support immobilization TiO2/g-C3N4 visible light photocatalysis NO pollution |
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