Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 10, Issue 2, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2021.107118
Keywords
Photocatalysis; g-C3N4; Ti0.7Sn0.3O2; S-scheme; pollutants degradation
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Funding
- Science and Technology Planning Project of Gansu Province of China [17JR5RA223]
- National Natural Science Foundation of China [51972153]
- JSPS [16H06439, 20H00297]
- Dynamic Alliance for Open Innovations Bridging Human, Environment and Materials, the Cooperative Research Program of Network Joint Research Center for Materials and Devices
- Grants-in-Aid for Scientific Research [20H00297] Funding Source: KAKEN
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A novel S-scheme Ti0.7Sn0.3O2/g-C3N4 heterojunction photocatalyst was proposed, showing superior photocatalytic performance under visible light for the degradation of Rhodamine B and tetracycline hydrochloride in water. The excellent photocatalytic activity is attributed to the effective separation and transfer of photo-generated charges in the S-scheme structure between Ti0.7Sn0.3O2 and g-C3N4.
Herein we proposed a novel S-scheme Ti0.7Sn0.3O2/g-C3N4 heterojunction photocatalyst, which exhibited superior photocatalytic performance in contrast to the bare Ti0.7Sn0.3O2 and g-C3N4 under visible light. The optimized mass ratio of 10 wt% Ti0.7Sn0.3O2/g-C3N4 composite exhibits a favorable photocatalytic degradation capability of Rhodamine B (98.5%, 20 min) and tetracycline hydrochloride (88.3%, 40 min) in water, and exhibits excellent photocatalytic stability. The remarkable photocatalytic activity is attributed to the S-scheme between Ti0.7Sn0.3O2 and g-C3N4, which realizes effective separation and transfer to photo-generated charges. This work not only prepares a novel composite for photocatalytic pollutants degradation but also shows the significant role to photocarrier separation of S-scheme heterojunction structures.
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