Enhance photocatalytic CO 2 reduction and biomass selective oxidation via sulfur vacancy-enriched S-scheme heterojunction of MoS 2 @GCN
Article
Ling, Weikang, Ma, Jiliang, Hong, Min and Sun, Runcang. 2024. "Enhance photocatalytic CO 2 reduction and biomass selective oxidation via sulfur vacancy-enriched S-scheme heterojunction of MoS 2 @GCN." Chemical Engineering Journal. 493. https://doi.org/10.1016/j.cej.2024.152729
| Article Title | Enhance photocatalytic CO 2 reduction and biomass selective oxidation via sulfur vacancy-enriched S-scheme heterojunction of MoS 2 @GCN |
|---|---|
| ERA Journal ID | 3854 |
| Article Category | Article |
| Authors | Ling, Weikang, Ma, Jiliang, Hong, Min and Sun, Runcang |
| Journal Title | Chemical Engineering Journal |
| Journal Citation | 493 |
| Article Number | 152729 |
| Number of Pages | 11 |
| Year | 2024 |
| Publisher | Elsevier |
| Place of Publication | Netherlands |
| ISSN | 1385-8947 |
| 1873-3212 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2024.152729 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S1385894724042165 |
| Abstract | Photocatalytic CO2 reduction and biomass selective oxidation have considerable practical implications in addressing environmental challenges. However, developing efficient photocatalyst is the key to realize the mass-market applications. Herein, an MoS2@GCN S-scheme heterojunction, rich in sulfur vacancies (Sv), was fabricated by a dicyandiamide-blowing and calcination strategy using NH4Cl as the gas template. With the synergistic effects of Sv and the S-scheme charge migration mechanism, the 30%-Sv-MoS2@GCN demonstrated exceptional performance, showcasing a CO evolution rate of 68.3 μmol g−1 h−1 and a xylonic acid yield of 64.2%, without using any sacrificial agents. The formation of Sv was confirmed through electron paramagnetic resonance (EPR) analysis. The S-scheme charge transfer mechanism of the Sv-MoS2@GCN heterojunction was verified by in-situ X-ray photoelectron spectroscopy (XPS) spectra, EPR analysis, and density functional theory (DFT) calculations. This study establishes a framework for enhancing photocatalytic CO2 reduction and biomass selective oxidation by regulating charge transfer through sensible structural design. |
| Keywords | S-scheme heterojunction; Sulfur vacancies ; Photocatalytic CO2 reduction ; Biomass refining ; GCN |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401605. Functional materials |
| Public Notes | The accessible file is the accepted version of the paper. Please refer to the URL for the published version. |
| Byline Affiliations | Dalian Polytechnic University, China |
| School of Engineering | |
| Centre for Future Materials |
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https://research.usq.edu.au/item/z8664/enhance-photocatalytic-co-2-reduction-and-biomass-selective-oxidation-via-sulfur-vacancy-enriched-s-scheme-heterojunction-of-mos-2-gcn
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