Design of H3PW12O40/TiO2 and Ag/H3PW12O40/TiO2 film-coated optical fiber photoreactor for the degradation of aqueous rhodamine B and 4-nitrophenol under simulated sunlight irradiation
Design of H3PW12O40/TiO2 and Ag/H3PW12O40/TiO2 film-coated optical fiber photoreactor for the degradation of aqueous rhodamine B and 4-nitrophenol under simulated sunlight irradiation
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H3PW12O40/TiO2 和 Ag/H3PW12O40/TiO2 覆膜光纤光反应器设计用于模拟太阳光照射下降解水性罗丹明 B 和 4-硝基苯酚
DOI：
10.1016/j.cej.2012.06.060
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发表时间：
2012-08
影响因子：
15.1
通讯作者：
Mingxin Huo
中科院分区：
文献类型：
--
作者：
Wan Guo;Yuxin Yang;Yihang Guo;Mingxin Huo
为了提高光催化剂降解废水中有机污染物的光能利用效率，设计了一种新型光反应器，该光反应器由H3 PW 12 O 40/TiO 2或金属银沉积的H3 PW 12 O 40/TiO 2膜包覆光纤束组成，通过溶胶-凝胶、水热处理、光还原和浸渍涂覆等步骤完成。H3 PW 12 O 40/TiO 2或Ag/H3 PW 12 O 40/TiO 2薄膜均为单相、介孔结构，电荷转移带在200 - 400 nm或200 - 800 nm范围内。以罗丹明B和对硝基苯酚为目标污染物，在自制的日光模拟器（320 nm <λ<680 nm）和商业白炽灯照射下，研究了H3 PW 12 O 40/TiO 2和Ag/H3 PW 12 O 40/TiO 2镀膜光纤的光催化活性。H3 PW 12 O 40/TiO 2和Ag/H3 PW 12 O 40/TiO 2薄膜的光催化活性均高于TiO 2薄膜，并从Keggin单元与TiO 2的协同光催化效应和金属Ag的表面等离子体共振效应两个方面进行了解释; H_3PW_（12）O_（40）/TiO_2和Ag/H_3PW_（12）O_（40）/TiO_2薄膜在光纤光反应器中具有较高的光催化活性，这是由于其具有上级的光-光纤反应器中催化剂的能量利用。最后，通过六个连续的催化运行的催化剂膜的可重复使用性进行了评价。
In order to improve sunlight-energy utilization efficiency of the photocatalyst for the degradation of organic pollutants in wastewater, a novel photoreactor that comprised H3PW12O40/TiO2or metallic Ag deposited H3PW12O40/TiO2film-coated optical fiber bundles was designed by the steps of sol–gel, hydrothermal treatment, photoreduction, and dip coating. The H3PW12O40/TiO2or Ag/H3PW12O40/TiO2film exhibited anatase phase, mesoporosity, and charge transfer band in the range of 200−400nm or 200−800nm. The photocatalytic activity of the H3PW12O40/TiO2and Ag/H3PW12O40/TiO2film-coated optical fibers was evaluated by the degradation of rhodamine B and 4-nitrophenol in aqueous solutions under the irradiation of commercial Xe lamp and self-made solar simulator (320nm<λ<680nm). The enhanced photocatalytic activity of the H3PW12O40/TiO2or Ag/H3PW12O40/TiO2film in comparison of TiO2film was obtained and explained in terms of the synergistic photocatalytic effect between Keggin unit and TiO2as well as surface plasmon resonance effect of metallic Ag; and considerably high photocatalytic activity of the H3PW12O40/TiO2and Ag/H3PW12O40/TiO2film in the optical fiber photoreactor is explained by the superior light-energy utilization of the catalyst in the optical-fiber reactor. Finally, the reusability of the catalyst film was evaluated through six consecutive catalytic runs.
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影响因子：
22.1
作者：
A. Danion;J. Disdier;C. Guillard;O. Paisse;N. Jaffrezic‐Renault
通讯作者：
A. Danion;J. Disdier;C. Guillard;O. Paisse;N. Jaffrezic‐Renault
影响因子：
22.1
作者：
Kexin Li;Xia Yang;Yingna Guo;Fengyan Ma;Huichao Li;Ling Chen;Yihang Guo
通讯作者：
Kexin Li;Xia Yang;Yingna Guo;Fengyan Ma;Huichao Li;Ling Chen;Yihang Guo
通过可见光驱动光催化剂 Sr6Bi2O9 有效去除有机污染物
影响因子：
15.1
作者：
Zhang, Gaoke;Yu, Shujie;Yang, Yanqing;Shen, Xiong
通讯作者：
Shen, Xiong
影响因子：
3.7
作者：
Xia Yang;Yonghui Wang;Leilei Xu;Xiaodan Yu;Yihang Guo
通讯作者：
Xia Yang;Yonghui Wang;Leilei Xu;Xiaodan Yu;Yihang Guo
影响因子：
13.6
作者：
Lei Xu;Xia Yang;Yihang Guo;Fengyan Ma;Yingna Guo;Xing Yuan;M. Huo
通讯作者：
Lei Xu;Xia Yang;Yihang Guo;Fengyan Ma;Yingna Guo;Xing Yuan;M. Huo