Anion intercalated layered-double-hydroxide structure for efficient photocatalytic NO remove

论文摘要

Due to the easily controllable interlayer anions, metal cation composition proportion and thickness, which is beneficial to modify surface chemical state and tune bandgap, layered double hydroxides（LDHs） have great promising potential for photocatalytic applications. In this study,we have successfully synthesized the ZnAl–LDH intercalated the single anion between ZnAl cationic interlayer without anionic impurities by using a facile calcining and reconstructing routes. The electron structure and surface chemical state of the prepared products have been investigated by combining the DFT calculation and experimental characterization methods. UV–vis DRS was used to certify the light absorption of the prepared products, and we performed the DFT calculation to demonstrate the density of state and activation of reactant. These results suggested that the ZnAl–LDH–CO3 possessed the more proper band structure and superior ability to activate NO and O2 for accelerating the photocatalytic NO oxidation activity. Moreover, the in situ DRIFTS with dynamically monitoring intermediates and products over the ZnAl–LDH–CO3 was adopted to declare the photocatalytic NO oxidized process during the photocatalytic reaction process. This work illustrated the influence of different interlayer anions to the electron structure and surface chemical state of ZnAl–LDH structure through the experimental verification combined DFT calculation and the photocatalytic NO oxidized process via in situ DRIFTS analyzing, which would provide a novel way to design and fabricate the efficient photocatalysis, and understand the reaction process.

论文目录

文章来源

类型: 期刊论文

作者: Wangchen Huo,Tong Cao,Xiaoying Liu,Weina Xu,Biqin Dong,Yuxin Zhang,Fan Dong

来源: Green Energy & Environment 2019年03期

年度: 2019

分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

专业: 环境科学与资源利用

单位: State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University,Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University,College of Physics, Chongqing University,Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University,Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China

基金: financial support of the Fundamental Research Funds for the Central Universities (2018CDYJSY0055,106112017CDJXSYY0001,106112017C DJQJ138802,106112017CDJXSYY0001,106112017CDJS K04XK11,and 2018CDQYCL0027),the National Natural Science Foundation of China (Grant no. 21576034),the Innovative Research Team of Chongqing (CXTDG201602014),Project funded by Chongqing Special Postdoctoral Science Foundation (XmT2018043),Technological projects of Chongqing Municipal Education Commission (KJZDK201800801)

分类号: X701

页码: 270-277

总页数: 8

文件大小: 1258K

下载量: 9

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