期刊
ADVANCED SCIENCE
卷 9, 期 17, 页码 -出版社
WILEY
DOI: 10.1002/advs.202201134
关键词
charge separation; electron transfer; interfacial electric field; photocatalytic hydrogen production; TPPS; PDI
资金
- Chinese National Science Foundation [21872077, 21621003]
- National Key Research and Development Project of China [2020YFA0710304]
- China Postdoctoral Science Foundation [2021M691770]
This work successfully constructed an electron donor-acceptor (D-A) interface with high charge separation for boosting photocatalytic H-2 evolution. The TPPS/PDI with D-A interface showed significantly improved H-2 evolution rate, stronger internal electric field, and longer excited state lifetime compared to pure TPPS and PDI. This study provides new ideas for designing materials with D-A interface to achieve high photocatalytic activity.
Charge separation efficiency of photocatalysts is still the key scientific issue for solar-to-chemical energy conversion. In this work, an electron donor-acceptor (D-A) interface with high charge separation between TPPS (tetra(4-sulfonatophenyl)porphyrin) and PDI (perylene diimide) is successfully constructed for boosting photocatalytic H-2 evolution. The TPPS/PDI with D-A interface shows excellent photocatalytic H-2 evolution rate of 546.54 mu mol h(-1) (30.36 mmol h(-1) g(-1)), which is 9.95 and 9.41 times higher than that of pure TPPS and PDI, respectively. The TPPS/PDI has a markedly stronger internal electric field, which is respectively 3.76 and 3.01 times higher than that of pure PDI and TPPS. The D-A interface with giant internal electric field efficiently facilitates charge separation and urges TPPS/PDI to have a longer excited state lifetime than single component. The work provides entirely new ideas for designing materials with D-A interface to realize high photocatalytic activity.
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