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Article: Bandgap Funneling in Bismuth-Based Hybrid Perovskite Photocatalyst with Efficient Visible-Light-Driven Hydrogen Evolution

TitleBandgap Funneling in Bismuth-Based Hybrid Perovskite Photocatalyst with Efficient Visible-Light-Driven Hydrogen Evolution
Authors
Keywordsbandgap funneling
hydrogen evolution
lead-free hybrid perovskites
photocatalysis
Issue Date22-Jun-2022
PublisherWiley
Citation
small methods, 2022, v. 6, n. 8 How to Cite?
Abstract

The photocatalytic system using hydrohalic acid (HX) for hydrogen production is a promising strategy to generate clean and renewable fuels as well as value-added chemicals (such as X-2/X-3(-)). However, it is still challenging to develop a visible-light active and strong-acid resistive photocatalyst. Hybrid perovskites have been recognized as a potential photocatalyst for photovoltaic HX splitting. Herein, a novel environmentally friendly mixed halide perovskite MA(3)Bi(2)Cl(9-x)I(x) with a bandgap funnel structure is developed, i.e., confirmed by energy dispersive X-ray analysis and density functional theory calculations. Due to gradient neutral formation energy within iodine-doped MA(3)Bi(2)Cl(9), the concentration of iodide element decreases from the surface to the interior across the MA(3)Bi(2)Cl(9-x)I(x) perovskite. Because of the aligned energy levels of iodide/chloride-mixed MA(3)Bi(2)Cl(9-x)I(x), a graded bandgap funnel structure is therefore formed, leading to the promotion of photoinduced charge transfer from the interior to the surface for efficient photocatalytic redox reaction. As a result, the hydrogen generation rate of the optimized MA(3)Bi(2)Cl(9-x)I(x) is enhanced up to approximate to 341 +/- 61.7 mu mol h(-1) with a Pt co-catalyst under visible light irradiation.


Persistent Identifierhttp://hdl.handle.net/10722/331087
ISSN
2023 Impact Factor: 10.7
2023 SCImago Journal Rankings: 3.107
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTang, YQ-
dc.contributor.authorMak, CH-
dc.contributor.authorWang, C-
dc.contributor.authorFu, Y-
dc.contributor.authorLi, FF-
dc.contributor.authorJia, GH-
dc.contributor.authorHsieh, CW-
dc.contributor.authorShen, HH-
dc.contributor.authorColmenares, JC-
dc.contributor.authorSong, HS-
dc.contributor.authorYuan, MJ-
dc.contributor.authorChen, Y-
dc.contributor.authorHsu, HY-
dc.date.accessioned2023-09-21T06:52:38Z-
dc.date.available2023-09-21T06:52:38Z-
dc.date.issued2022-06-22-
dc.identifier.citationsmall methods, 2022, v. 6, n. 8-
dc.identifier.issn2366-9608-
dc.identifier.urihttp://hdl.handle.net/10722/331087-
dc.description.abstract<p>The photocatalytic system using hydrohalic acid (HX) for hydrogen production is a promising strategy to generate clean and renewable fuels as well as value-added chemicals (such as X-2/X-3(-)). However, it is still challenging to develop a visible-light active and strong-acid resistive photocatalyst. Hybrid perovskites have been recognized as a potential photocatalyst for photovoltaic HX splitting. Herein, a novel environmentally friendly mixed halide perovskite MA(3)Bi(2)Cl(9-x)I(x) with a bandgap funnel structure is developed, i.e., confirmed by energy dispersive X-ray analysis and density functional theory calculations. Due to gradient neutral formation energy within iodine-doped MA(3)Bi(2)Cl(9), the concentration of iodide element decreases from the surface to the interior across the MA(3)Bi(2)Cl(9-x)I(x) perovskite. Because of the aligned energy levels of iodide/chloride-mixed MA(3)Bi(2)Cl(9-x)I(x), a graded bandgap funnel structure is therefore formed, leading to the promotion of photoinduced charge transfer from the interior to the surface for efficient photocatalytic redox reaction. As a result, the hydrogen generation rate of the optimized MA(3)Bi(2)Cl(9-x)I(x) is enhanced up to approximate to 341 +/- 61.7 mu mol h(-1) with a Pt co-catalyst under visible light irradiation.</p>-
dc.languageeng-
dc.publisherWiley-
dc.relation.ispartofsmall methods-
dc.subjectbandgap funneling-
dc.subjecthydrogen evolution-
dc.subjectlead-free hybrid perovskites-
dc.subjectphotocatalysis-
dc.titleBandgap Funneling in Bismuth-Based Hybrid Perovskite Photocatalyst with Efficient Visible-Light-Driven Hydrogen Evolution-
dc.typeArticle-
dc.identifier.doi10.1002/smtd.202200326-
dc.identifier.pmid35733072-
dc.identifier.scopuseid_2-s2.0-85132316741-
dc.identifier.volume6-
dc.identifier.issue8-
dc.identifier.eissn2366-9608-
dc.identifier.isiWOS:000814418500001-
dc.publisher.placeWEINHEIM-
dc.identifier.issnl2366-9608-

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