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https://hdl.handle.net/2440/136264
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Type: | Journal article |
Title: | S-scheme photocatalysis induced by ultrathin TiO₂(B) nanosheets-anchored hierarchical In₂S₃ spheres for boosted photocatalytic activity |
Other Titles: | S-scheme photocatalysis induced by ultrathin TiO2(B) nanosheets-anchored hierarchical In2S3 spheres for boosted photocatalytic activity |
Author: | Zhu, C. Yao, H. Le, S. Yin, Y. Chen, C. Xu, H. Wang, S. Duan, X. |
Citation: | Composites Part B: Engineering, 2022; 242:1-9 |
Publisher: | Elsevier BV |
Issue Date: | 2022 |
ISSN: | 1359-8368 1879-1069 |
Statement of Responsibility: | Chengzhang Zhu, Haiqian Yao, Shukun Le, Yu Yin, Chuanxiang Chen Haitao Xu, Shaobin Wang, Xiaoguang Duan |
Abstract: | S-scheme photocatalytic systems driven by semiconductors are highly promising to degrade deleterious antibiotics in a sustainable manner. Here, ultrathin TiO2(B) nanosheets-decorated hierarchical In2S3 spheres were fabricated for the photocatalytic degradation of tetracycline. The optimized IT-1.5:1 heterojunction attains stronger visible light-harvesting ability, superior electron-hole transfer efficiency, and abundant coupling heterointerfaces to generate reactive radicals, achieving an impressive removal efficiency of 97.3%, which is approximately 3.2 and 2.1-fold greater than TiO2(B) and In2S3. Furthermore, the possible degradation pathways of tetracycline were proposed based on the calculated Fuki indexes and intermediates detected by a HPLC-MS. On In2S3/TiO2(B) interfaces, the migration of electrons from TiO2(B) to In2S3 and an intensive built-in electronic field resulted in S-scheme mode, instead of type-II. The In2S3/TiO2(B) S-scheme structure offers an internal electron channel at the interface and maintains the active sites with high potentials for photocatalysis. This study provides protocols for rational design of S-scheme catalysts for sustainable water purification. |
Keywords: | In2S3; TiO2(B); Electronic interaction; S-scheme photocatalyst; Degradation pathways |
Rights: | © 2022 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.compositesb.2022.110082 |
Grant ID: | http://purl.org/au-research/grants/arc/DE210100253 |
Published version: | http://dx.doi.org/10.1016/j.compositesb.2022.110082 |
Appears in Collections: | Chemical Engineering publications |
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