Adsorption and activation, active site and reaction pathway of photocatalytic CO2 reduction: A review

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148754 - 148754

Published: Jan. 14, 2024

Language: Английский

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Cu-Based Materials for Enhanced C2+ Product Selectivity in Photo-/Electro-Catalytic CO2 Reduction: Challenges and Prospects

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 4, 2024

Carbon dioxide conversion into valuable products using photocatalysis and electrocatalysis is an effective approach to mitigate global environmental issues the energy shortages. Among materials utilized for catalytic reduction of CO

Language: Английский

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Isolated Cu Sites in CdS Hollow Nanocubes with Doping-Location-Dependent Performance for Photocatalytic CO₂ Reduction

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(3), P. 1468 - 1479

Published: Jan. 13, 2024

Doping engineering has enabled the construction of homogeneous and abundant atomic-level catalytic sites for photocatalytic CO2 reduction with improved selectivity target product. However, little is known about effect spatial position heteroatoms on activity semiconductors toward reduction. Herein, uniform Cu doping into bulk phase hollow CdS cubes (HCC) onto surface HCC, denoted as Cu/HCC HCC@Cu, respectively, are prepared by tuning introduction order sources. Experimental analysis shows that both methods can promote separation migration photoinduced charge carriers in CdS. Notably, HCC@Cu leads to much better proton H2 production performance but lower efficiency compared bare In sharp contrast, enhances CO2-to-CO conversion while mitigating evolution. This should be ascribed smaller overpotential saturated system than Ar system. addition, atoms shifts d band center upward near Fermi energy level, which promotes adsorption activation These results indicate photoelectrons a prolonged lifetime preferably reduce molecules rather protons. The density functional theory (DFT) calculation show desorption CO*, adaptable sulfur vacancies (Vs) produced situ techniques stimulate formation CO* intermediates, resulting high CO. work reveals different heteroatom locations will provide reference design efficient photocatalysts fine structure.

Language: Английский

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MOF-on-MOF-derived CuO@In2O3 s-scheme heterojunction with core–shell structure for efficient photocatalytic CO2 reduction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149855 - 149855

Published: Feb. 21, 2024

Language: Английский

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Well-defined diatomic catalysis for photosynthesis of C2H4 from CO2

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 18, 2024

Abstract Owing to the specific electronic-redistribution and spatial proximity, diatomic catalysts (DACs) have been identified as principal interest for efficient photoconversion of CO 2 into C H 4 . However, predominant bottom-up strategy DACs synthesis has critically constrained development highly ordered due random distribution heteronuclear atoms, which hinders optimization catalytic performance exploration actual reaction mechanism. Here, an up-bottom ion-cutting architecture is proposed fabricate well-defined DACs, superior proximity CuAu diatomics (DAs) decorated TiO (CuAu-DAs-TiO ) successfully constructed compact heteroatomic spacing (2-3 Å). profoundly low C-C coupling energy barrier CuAu-DAs-TiO , a considerable production with sustainability achieved. Our discovery inspires novel fabrication motivate distinct deduction heteroatom synergistically

Language: Английский

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Insight into the Selectivity-Determining Step of Various Photocatalytic CO₂ Reduction Products by Inorganic Semiconductors

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(14), P. 10760 - 10788

Published: July 3, 2024

Language: Английский

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Efficient photocatalytic CO2 reduction to CH4 via electric field-regulated d-band center on Ga2S3/CuS S-type heterojunction interface structures

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124302 - 124302

Published: June 14, 2024

Language: Английский

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Coordination engineering of the interfacial chemical bond and sulfur vacancies modulated S‐scheme charge transfer for efficient photocatalytic CO2 reduction

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 343, P. 127114 - 127114

Published: March 14, 2024

Language: Английский

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Promoting Photocatalytic CO₂ Methanation by the Construction of Cooperative Copper Dual-Active Sites

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(7), P. 5275 - 5285

Published: March 25, 2024

Selective photocatalytic CO2 methanation provides an attractive avenue to address energy and environmental issues. However, impediments such as the sluggish adsorption activation of H2O molecules, along with unexpected intermediate desorption, greatly restrict activity selectivity methanation. To these issues, we devised a dual-active site catalyst comprising Cu single atoms (SAs) nanoclusters (NCs) supported on defective TiO2 (Cu1+NCs/BT). As result, remarkable CH4 98% yield 19.63 μmol gcat.–1 h–1 can be obtained over as-prepared Cu1+NCs/BT in pure water. Mechanistic studies reveal enhanced performance could ascribed synergistic effect sites, where SAs adsorb activate CO2, while NCs boost dissociation for *H coverage. Additionally, adjacent jointly stabilize *CO reduce barrier protonation, promoting multielectron transfer process.

Language: Английский

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Photocatalytic CO₂‐to‐CH₄ Conversion with Ultrahigh Selectivity of 95.93% on S‐Vacancy Modulated Spatial In₂S₃/In₂O₃ Heterojunction

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(49)

Published: Aug. 19, 2024

Abstract Photocatalytic conversion of CO 2 to methane faces challenges due the stability , unpredictable intermediates, and complex electron transfer steps. Herein, a spatial In S 3 /In O heterojunction with abundant vacancies (ISIO(V )) is obtained through facile Polyvinylpyrrolidone (PVP) treatment reach yield 16.52 µmol·g −1 ·h selectivity 95.93%, which highest among reported based catalysts. The work function ( W f ), differential charge density, Kelvin Probe Force Microscopy (KPFM) results confirm that strengthen built‐in electric field (BEF) (ISIO) heterojunctions, improving carrier separation. Density functional theory (DFT) calculations reveal induce redistribution, facilitating adsorption activation *CO intermediate, thus promoting hydrogenation *CHO. reaction pathway photocatalytic reduction revealed by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) Gibbs free energy (Δ G ). modify electronic orbitals occupied molecular orbital (HOMO) atom, resulting stronger interaction between catalyst *CHO, reduces Δ *CHO regulates CH 4 . This study paves new avenue for design photocatalysts highly selective defect engineering.

Language: Английский

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