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TiO2 Nanotube Heterostructure Modified with a Metal-Organic Framework Showing Robust Stability for Photocathodic Protection
Lu,Xiayu1,2; Liu,Li3; Cui,Yu4; Wang,Fuhui3
Corresponding AuthorLu,Xiayu() ; Liu,Li()
2021-07-01
Source PublicationJournal of The Electrochemical Society
ISSN0013-4651
Volume168Issue:7
AbstractTiO2 p-n heterojunctions modified with zeolitic imidazolate framework-67 (ZIF-67), a metal-organic framework, were successfully fabricated by a solution self-assembly method, and their photoelectrochemical and photocathodic performance was investigated. The presence of the organic ligands in ZIF-67 enabled ZIF-67-TiO2 photoanodes to exhibit excellent stable cathodic protection performance under simulated sunlight illumination compared with traditional organic or inorganic cocatalysts. ZIF-67-TiO2 photoanodes could provide 12 h of effective and stable photocathodic protection for 304 stainless steel (304SS) in 3.5 wt% NaCl solution. Experimental results revealed that the morphology of ZIF-67 cocatalysts affected the photoelectrochemical performance of ZIF-67-TiO2 photoanodes. Compared with large (~900 nm) ZIF-67-modified TiO2, small (~115 nm) ZIF-67-modified TiO2 demonstrated an upwardly shifted conduction band (CB) and faster separation and migration of photogenerated carriers. Furthermore, a photoanode made from small ZIF-67-modified TiO2 exhibited a lower photogenerated potential (?0.37 V) than the photoanodes made from large ZIF-67-modified TiO2 and TiO2, this photoanode could provide more effective photocathodic protection for 304SS.
KeywordTiO2 ZIF-67 Surface modification P-n heterojunction Photocathodic protection
DOI10.1149/1945-7111/ac1496
Languageen
WOS IDIOP:0013-4651-168-7-ac1496
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159437
Collection中国科学院金属研究所
Corresponding AuthorLu,Xiayu; Liu,Li
Affiliation1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
3.Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, People’s Republic of China
4.Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
Recommended Citation
GB/T 7714
Lu,Xiayu,Liu,Li,Cui,Yu,et al. TiO2 Nanotube Heterostructure Modified with a Metal-Organic Framework Showing Robust Stability for Photocathodic Protection[J]. Journal of The Electrochemical Society,2021,168(7).
APA Lu,Xiayu,Liu,Li,Cui,Yu,&Wang,Fuhui.(2021).TiO2 Nanotube Heterostructure Modified with a Metal-Organic Framework Showing Robust Stability for Photocathodic Protection.Journal of The Electrochemical Society,168(7).
MLA Lu,Xiayu,et al."TiO2 Nanotube Heterostructure Modified with a Metal-Organic Framework Showing Robust Stability for Photocathodic Protection".Journal of The Electrochemical Society 168.7(2021).
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