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Insights into the crystal size and morphology of photocatalysts

文献类型：期刊论文

作者Chen, Ke1,3; Fan, Qiaohui2; Chen, Changlun1,3,4; Chen, Zhongshan1; Alsaedi, Ahmed4; Hayat, Tasawar4
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
出版日期2019-03-07
卷号538页码:638-647
ISSN号0021-9797
关键词N-doped TiO2 Specific surface area Morphology Photocatalytic performance
DOI10.1016/j.jcis.2018.12.039
英文摘要Identification of the role of the specific surface area and surface structure as a key factor for photocatalytic performance remains a controversial topic. In this work, three types of N-doped anatase TiO2 with different morphologies are newly synthesized by changing the addition order for the reagents. Methyl orange, Rhodamine B and Congo red are selected to showcase the photoactivity of the synthesized Ndoped TiO2. The photocatalytic experimental results show that Congo red can be selectively and rapidly degraded by three different N-doped TiO2 samples. Interestingly, although a microspiny sphere structure possesses a larger specific surface area compared to a microflower structure, a microflower structure dominated by {1 0 0) and {1 0 1) facets exhibits a higher photocatalytic efficiency compared to a microspiny structure dominated by {1 0 1) facets, as demonstrated by a quicker photodegradation rate for Congo red, higher photocurrent density, smaller semicircle in the electrochemical impedance spectrum, and lower photoluminescence intensity. Thus, the result suggests that the surface structure plays a more important role compared to the surface area. In addition, a hollow microsphere structure with the largest specific surface area exhibits the best performance in terms of photodegradation, charge separation ability and electron-hole recombination efficiency, indicating that the proper surface morphology combined with a large specific surface area is greatly promising for enhancement of photoactivity. (C) 2018 Elsevier Inc. All rights reserved.
WOS关键词DOPED TIO2 ; CONTROLLABLE SYNTHESIS ; TITANIUM-DIOXIDE ; NANOCRYSTALS ; MECHANISM ; FACETS ; WATER ; SHAPE ; ZNO ; ADSORPTION
资助项目National Natural Science Foundation of China[21477133] ; Anhui Provincial Natural Science Foundation[1608085QB44] ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences
WOS研究方向Chemistry
语种英语
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号WOS:000458596500067
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Anhui Provincial Natural Science Foundation ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/90677]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Chen, Changlun
作者单位1.North China Elect Power Univ, Coll Environm Sci & Engn, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Gansu Prov, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
3.Chinese Acad Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, POB 1126, Hefei 230031, Anhui, Peoples R China
4.King Abdulaziz Univ, NAAM Res Grp, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Chen, Ke,Fan, Qiaohui,Chen, Changlun,et al. Insights into the crystal size and morphology of photocatalysts[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,538:638-647.
APA Chen, Ke,Fan, Qiaohui,Chen, Changlun,Chen, Zhongshan,Alsaedi, Ahmed,&Hayat, Tasawar.(2019).Insights into the crystal size and morphology of photocatalysts.JOURNAL OF COLLOID AND INTERFACE SCIENCE,538,638-647.
MLA Chen, Ke,et al."Insights into the crystal size and morphology of photocatalysts".JOURNAL OF COLLOID AND INTERFACE SCIENCE 538(2019):638-647.

入库方式： OAI收割

来源：地质与地球物理研究所

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