Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor
Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor
复制标题
气相反应器中 Ag/TiO2 复合催化剂光分解 NOx
DOI:
10.1016/j.cej.2016.08.080
复制
发表时间:
2017
影响因子:
15.1
通讯作者:
Dengwei Jing
中科院分区:
文献类型:
--
作者:
Mengxi Xu;Yunhai Wang;Jiafeng Geng;Dengwei Jing
With NO as model gas component, photocatalytic NOx decomposition under UV and visible light irradiation has been investigated in a gas phase photocatalytic reactor over anatase TiO2and Ag/TiO2, respectively. TiO2and Ag/TiO2were prepared by a solvothermal method and characterized by X-ray diffraction (XRD), BET, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) etc. The activity of the photocatalysts was evaluated by decomposition rate of NO and yield of N2, respectively. It was found that although photodecomposition of NO over pure TiO2is very quick, NO has not been converted into N2and O2. It means that some by-products have formed. N2formation is a relatively slower process. It was found that the selectivity for photodecomposition of NOx into N2can be significantly improved by introducing appropriate amount of Ag into TiO2. The 1 wt% Ag loaded on TiO2showed the highest activity for both NO decomposition and N2production. The possible mechanism for the enhancement of photocatalytic activity of anatase Ag/TiO2was attributed to the coexistence of Ag0and Ag+on the surface of TiO2, with a Ag+/Ag ratio of ca. 0.86, which played different roles in the photocatalytic process. Our study could be valuable for the development of efficient photocatalyst for NOx photodecomposition with a high selectivity.
登录
查看更多内容
影响因子:
16.5
作者:
Jing Zhang;Song Yan;L. Fu;Fei Wang;M. Yuan;G. Luo;Qian Xu;Xiang Wang;Can Li
通讯作者:
Jing Zhang;Song Yan;L. Fu;Fei Wang;M. Yuan;G. Luo;Qian Xu;Xiang Wang;Can Li
影响因子:
--
作者:
N. Sobana;M. Muruganadham;M. Swaminathan
通讯作者:
N. Sobana;M. Muruganadham;M. Swaminathan
DOI:
10.1021/jp0469618
发表时间:
2005-01
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
B. Xin;L. Jing;Z. Ren;Baiqi Wang;H. Fu
通讯作者:
B. Xin;L. Jing;Z. Ren;Baiqi Wang;H. Fu
影响因子:
3.7
作者:
Li, Jingxia;Xu, Jianhua;Fan, Kangnian
通讯作者:
Fan, Kangnian
影响因子:
3.9
作者:
Stathatos, E;Lianos, P;Siokou, A
通讯作者:
Siokou, A