首页|Defect-enriched BiOIO3/Ti3C2 MXene 2D/2D Schottky-type heterostructure for efficient and selective CH4 production via CO2 photoreduction:Unveiling the roles of defect inclusion and Ti3C2 MXene co-catalyst

Defect-enriched BiOIO3/Ti3C2 MXene 2D/2D Schottky-type heterostructure for efficient and selective CH4 production via CO2 photoreduction:Unveiling the roles of defect inclusion and Ti3C2 MXene co-catalyst

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The photoreduction of CO2 using solar energy to produce energy-efficient fuels is a sustainable technol-ogy that addresses energy needs while reducing carbon emissions.However,synthesizing efficient and robust photocatalysts for this process is challenging.This study introduces a viable approach for highly selective CO2 photoreduction to CH4 production by integrating defect-enriched BiOIO3(DEBI)with a Ti3C2(TC)MXene co-catalyst,forming an efficient 2D/2D Schottky-type heterostructure.The DEBI,enhanced with precise defect engineering,showed improved light absorption and charge separation efficiency.In tandem,the TC MXene co-catalyst facilitated rapid electron transfer and significantly minimized charge recombination.Consequently,the DEBI/TC-2 heterostructure,with an optimal 2 wt％TC MXene loading,achieved a CH4 yield of 52.8 μmol h-1 g-1,representing a remarkable 20.5-and 6.3-fold increase over pristine BiOIO3 and DEBI,respectively.The Schottky-type 2D/2D heterostructure also demonstrated an impressive apparent quantum yield of 0.72％,99％CH4 selectivity over H2 generation,and remarkable stability across multiple cycles.This study underscores the synergistic advantages of defect engineering and MXene co-catalyst integration in a single system,proposing a novel direction for designing highly efficient photocatalysts for solar-driven CO2 reduction in energy-efficient fuel production.

BiOIO3Ti3C2 MXeneDefect engineeringHybrid heterostructureSelective CO2 reduction

Dong-Eun Lee、Reshma Bhosale、Vidyasagar Devthade、Wan-Kuen Jo、Surendar Tonda

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School of Architecture,Civil,Environmental and Energy Engineering,Kyungpook National University,80 Daehak-ro,Buk-gu,Daegu,41566,Republic of Korea

Department of Environmental Science,Savitribai Phule Pune University,Pune,411007,Maharashtra,India

Department of Chemistry,Indian Institute of Technology Hyderabad(IITH),Kandi,Sangareddy,502285,Telangana,India

2024

10.1016/j.jmst.2024.01.101

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.202(35)