Co-doping of a La5Ti2Cu0.9Ag0.1O7S5 photocatalyst (λ < 700 nm) with Ga and Al to enhance photocatalytic H2 evolution

Xiaojun Wang; Zhenhua Pan; Junie Jhon M. Vequizo; Takashi Hisatomi; Swarnava Nandy; Tomohiro Higashi; Lihua Lin; Jiadong Xiao; Tsuyoshi Takata; Akira Yamakata; Wei Yan; Kazunari Domen

doi:10.1039/d3cc01863f

Co-doping of a La₅Ti₂Cu_0.9Ag_0.1O₇S₅ photocatalyst (λ < 700 nm) with Ga and Al to enhance photocatalytic H₂ evolution

Xiaojun Wang
, Zhenhua Pan
, Junie Jhon M. Vequizo
, Takashi Hisatomi
, Swarnava Nandy
, Tomohiro Higashi
, Lihua Lin
, Jiadong Xiao
, Tsuyoshi Takata
, Akira Yamakata
, Wei Yan
, Kazunari Domen

School of Energy and Power Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

La₅Ti₂Cu_0.9Ag_0.1O₇S₅ (LTCA) (λ < 700 nm) can function as a photocatalyst for H₂ evolution. Co-doping LTCA with Ga³⁺ and Al³⁺ at Ti⁴⁺ sites effectively enhanced the H₂ evolution activity of LTCA, yielding an apparent quantum efficiency of 18% at 420 nm. The activity of this material was greater than that previously reported for Ga-doped LTCA by a factor of 1.6. Such activity enhancement is attributed to increasing the population of long-lived photogenerated electrons and facilitating the electron transfer to the cocatalyst. This work significantly improved the LTCA-based photocatalyst for H₂ evolution, making it a promising material for future application in non-sacrificial Z-scheme water splitting.

Original language	English
Pages (from-to)	6913-6916
Number of pages	4
Journal	Chemical Communications
Volume	59
Issue number	45
DOIs	https://doi.org/10.1039/d3cc01863f
State	Published - 13 May 2023

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@article{342812a6b2c143db8c0647ea332b801c,

title = "Co-doping of a La5Ti2Cu0.9Ag0.1O7S5 photocatalyst (λ < 700 nm) with Ga and Al to enhance photocatalytic H2 evolution",

abstract = "La5Ti2Cu0.9Ag0.1O7S5 (LTCA) (λ < 700 nm) can function as a photocatalyst for H2 evolution. Co-doping LTCA with Ga3+ and Al3+ at Ti4+ sites effectively enhanced the H2 evolution activity of LTCA, yielding an apparent quantum efficiency of 18\% at 420 nm. The activity of this material was greater than that previously reported for Ga-doped LTCA by a factor of 1.6. Such activity enhancement is attributed to increasing the population of long-lived photogenerated electrons and facilitating the electron transfer to the cocatalyst. This work significantly improved the LTCA-based photocatalyst for H2 evolution, making it a promising material for future application in non-sacrificial Z-scheme water splitting.",

author = "Xiaojun Wang and Zhenhua Pan and Vequizo, \{Junie Jhon M.\} and Takashi Hisatomi and Swarnava Nandy and Tomohiro Higashi and Lihua Lin and Jiadong Xiao and Tsuyoshi Takata and Akira Yamakata and Wei Yan and Kazunari Domen",

note = "Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

year = "2023",

month = may,

day = "13",

doi = "10.1039/d3cc01863f",

language = "英语",

volume = "59",

pages = "6913--6916",

journal = "Chemical Communications",

issn = "1359-7345",

publisher = "Royal Society of Chemistry",

number = "45",

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TY - JOUR

T1 - Co-doping of a La5Ti2Cu0.9Ag0.1O7S5 photocatalyst (λ < 700 nm) with Ga and Al to enhance photocatalytic H2 evolution

AU - Wang, Xiaojun

AU - Pan, Zhenhua

AU - Vequizo, Junie Jhon M.

AU - Hisatomi, Takashi

AU - Nandy, Swarnava

AU - Higashi, Tomohiro

AU - Lin, Lihua

AU - Xiao, Jiadong

AU - Takata, Tsuyoshi

AU - Yamakata, Akira

AU - Yan, Wei

AU - Domen, Kazunari

PY - 2023/5/13

Y1 - 2023/5/13

N2 - La5Ti2Cu0.9Ag0.1O7S5 (LTCA) (λ < 700 nm) can function as a photocatalyst for H2 evolution. Co-doping LTCA with Ga3+ and Al3+ at Ti4+ sites effectively enhanced the H2 evolution activity of LTCA, yielding an apparent quantum efficiency of 18% at 420 nm. The activity of this material was greater than that previously reported for Ga-doped LTCA by a factor of 1.6. Such activity enhancement is attributed to increasing the population of long-lived photogenerated electrons and facilitating the electron transfer to the cocatalyst. This work significantly improved the LTCA-based photocatalyst for H2 evolution, making it a promising material for future application in non-sacrificial Z-scheme water splitting.

AB - La5Ti2Cu0.9Ag0.1O7S5 (LTCA) (λ < 700 nm) can function as a photocatalyst for H2 evolution. Co-doping LTCA with Ga3+ and Al3+ at Ti4+ sites effectively enhanced the H2 evolution activity of LTCA, yielding an apparent quantum efficiency of 18% at 420 nm. The activity of this material was greater than that previously reported for Ga-doped LTCA by a factor of 1.6. Such activity enhancement is attributed to increasing the population of long-lived photogenerated electrons and facilitating the electron transfer to the cocatalyst. This work significantly improved the LTCA-based photocatalyst for H2 evolution, making it a promising material for future application in non-sacrificial Z-scheme water splitting.

UR - https://www.scopus.com/pages/publications/85160454115

U2 - 10.1039/d3cc01863f

DO - 10.1039/d3cc01863f

M3 - 文章

C2 - 37200012

AN - SCOPUS:85160454115

SN - 1359-7345

VL - 59

SP - 6913

EP - 6916

JO - Chemical Communications

JF - Chemical Communications

IS - 45

ER -

Co-doping of a La₅Ti₂Cu_0.9Ag_0.1O₇S₅ photocatalyst (λ < 700 nm) with Ga and Al to enhance photocatalytic H₂ evolution

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