Enhanced photocatalytic activity and mechanism insight of copper-modulated lead-free Cs2AgSbCl6 double perovskite microcrystals

Wu, Daofu; Liu, Xiaoqing; Tian, Changqing; Zhou, Jingchen; Lai, Junan; Ran, Hongmei; Gao, Bo; Zhou, Miao; Huang, Qiang; Tang, Xiaosheng

doi:10.1016/j.isci.2023.107355

Cited by 2 publications

(4 citation statements)

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“…The loading of Cu metals has also been proven effective for double perovskite Cs 2 AgSbCl 6 . 104 In this study, the Cu atom is proven to exhibit a greater CO 2 adsorption strength and stronger reducibility relative to the Ag atom of Cs 2 AgSbCl 6 . Precisely, Bader charge analysis reveals that the Cu@Cs 2 AgSbCl 6 (400) crystal facet loses more charge from Cu atom to CO 2 molecules (0.85 e) as compared to the bare Cs 2 AgSbCl 6 (400) crystal facet, while only 0.80 e is transferred from Ag atom CO 2 molecules.…”

Section: ■ Strategies For Application and Modification Of Lfhp-based ...mentioning

confidence: 70%

“…As opposed to bare CsCuCl 3 , Cu/CsCuCl 3 heterojunction attained a 2.9-fold increase in total electron consumption rate (58.77 μmol g –1 h –1 ) and a 42.3% higher CH 4 selectivity (92.7%). The loading of Cu metals has also been proven effective for double perovskite Cs 2 AgSbCl 6 . In this study, the Cu atom is proven to exhibit a greater CO 2 adsorption strength and stronger reducibility relative to the Ag atom of Cs 2 AgSbCl 6 .…”

Section: Strategies For Application and Modification Of Lfhp-based Ph...mentioning

confidence: 74%

“…Otherwise, CO intermediate can be converted to CH 2 OH and CH 3 O via various proposed paths involving CHOH or CH 2 O as intermediates to form CH 3 OH, CH 4 or other C 2 products. Based on reported photocatalytic CO 2 reduction over LFHPs thus far, the formyl route is typically employed to demonstrate selectivity between CO and CH 4 products. ,,− The route to CH 4 formation involves intermediates such as HCO, HCHO, CH 2 OH, CH 2 , and CH 3 as demonstrated in Figure a for the Cs 2 CuBr 4 LFHP. The surface-bound intermediate species during CO 2 photoconversion has also been studied experimentally using in situ DRIFTS as depicted in Figure b,c .…”

Section: Fundamentals Of Photocatalytic Co2 Reductionmentioning

confidence: 99%

“…(d) Calculated Gibbs free energy diagram for CO 2 RR on Cs 2 AgSbCl 6 and Cu@Cs 2 AgSbCl 6 . Reproduced with permission from ref under the terms of the CC-BY license. Copyright 2023, The Authors, published by Cell Press.…”

Section: Strategies For Application and Modification Of Lfhp-based Ph...mentioning

confidence: 99%

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Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Lee,

Chai,

Tan

2024

ACS Energy Lett.

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Carbon dioxide (CO 2 ), an archetypal greenhouse gas, can be transformed into valuable fuels through photocatalysis, presenting an auspicious avenue for combating global climate change and energy crisis. While halide perovskites have sparked substantial research interest, concerns over lead toxicity have spurred exploration of their lead-free counterparts for CO 2 photoreduction. This comprehensive Review navigates through the fundamentals of CO 2 reduction, delving into the basic principles, mechanisms, and relevant operando techniques. It then introduces the diverse structures of lead-free halide perovskites (LFHPs), synthesis methodologies, and intrinsic properties that render them suitable for CO 2 photoreduction. Subsequently, the Review unfolds their application and modification strategies for light-driven CO 2 conversion, highlighting their breakthroughs and shedding light on their potential mechanisms. Finally, the current challenges and strategies to tailor LFHPs for robust photocatalytic CO 2 reduction are critically discussed, offering insights for future research in this realm. This Review aims to illuminate the path toward sustainable photocatalysis, bridging knowledge gaps and inspiring innovations for a greener and carbon-neutral tomorrow.

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Section: ■ Strategies For Application and Modification Of Lfhp-based ...mentioning

confidence: 70%

Section: Strategies For Application and Modification Of Lfhp-based Ph...mentioning

confidence: 74%

Section: Fundamentals Of Photocatalytic Co2 Reductionmentioning

confidence: 99%

Section: Strategies For Application and Modification Of Lfhp-based Ph...mentioning

confidence: 99%

See 2 more Smart Citations

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Lee,

Chai,

Tan

2024

ACS Energy Lett.

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Atomically Contacted Cs₃Bi₂Br₉ QDs@UiO‐66 Composite for Photocatalytic CO₂ Reduction

Fang,

Yue,

Xiang

2024

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Metal halide perovskite quantum dots (QDs) are widely studied in the field of photocatalytic CO2 due to their strong light absorption and long carrier migration length. However, it can not exhibit high catalytic performance because of the radiative recombination and the lack of effective catalytic sites. Metal organic frameworks (MOFs) encapsulated QDs can not only solve the aforementioned problems, but also maintain their own unique characteristics with ultra‐high specific surfaces area and abundant metal sites. In this work, lead‐free bismuth‐based halide perovskite QDs are encapsulated into Zr‐based MOF (UiO‐66), which combines the advantages with high power conversion efficiency of QDs and the high surface area and porosity of UiO‐66. In addition, benefiting from the close contact between the Cs3Bi2Br9 QDs and the UiO‐66 enables the photogenerated electrons in the QDs to be rapidly transferred to the MOF. As a result, the Cs3Bi2Br9@UiO‐66 composite exhibits a higher yield for photocatalytic CO2 reduction than that of the prepared large‐sized composite of Cs3Bi2Br9 and UiO‐66.

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Enhanced photocatalytic activity and mechanism insight of copper-modulated lead-free Cs2AgSbCl6 double perovskite microcrystals

Cited by 2 publications

References 55 publications

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Atomically Contacted Cs₃Bi₂Br₉ QDs@UiO‐66 Composite for Photocatalytic CO₂ Reduction

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Enhanced photocatalytic activity and mechanism insight of copper-modulated lead-free Cs2AgSbCl6 double perovskite microcrystals

Cited by 2 publications

References 55 publications

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO2 Reduction

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO2 Reduction

Atomically Contacted Cs3Bi2Br9 QDs@UiO‐66 Composite for Photocatalytic CO2 Reduction

Contact Info

Product

Resources

About

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

Atomically Contacted Cs₃Bi₂Br₉ QDs@UiO‐66 Composite for Photocatalytic CO₂ Reduction