Interfacial engineering of Co(OH)2@CN composites: A study of p-n heterojunctions with enhanced xylose/xylan photoreforming and CO2 reduction performance
Article
Ling, Weikang, Ma, Jiliang, Jiang, Weikun, Wei, Huanqiu, Ren, Yuchen, Hong, Min, Kong, Lingzhao and Sun, Runcang. 2025. "Interfacial engineering of Co(OH)2@CN composites: A study of p-n heterojunctions with enhanced xylose/xylan photoreforming and CO2 reduction performance." Journal of Colloid and Interface Science. 682, pp. 814-824. https://doi.org/10.1016/j.jcis.2024.12.004
| Article Title | Interfacial engineering of Co(OH)2@CN composites: A study of p-n heterojunctions with enhanced xylose/xylan photoreforming and CO2 reduction performance |
|---|---|
| ERA Journal ID | 1454 |
| Article Category | Article |
| Authors | Ling, Weikang, Ma, Jiliang, Jiang, Weikun, Wei, Huanqiu, Ren, Yuchen, Hong, Min, Kong, Lingzhao and Sun, Runcang |
| Journal Title | Journal of Colloid and Interface Science |
| Journal Citation | 682, pp. 814-824 |
| Number of Pages | 11 |
| Year | 2025 |
| Publisher | Elsevier |
| Place of Publication | United States |
| ISSN | 0021-9797 |
| 1095-7103 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jcis.2024.12.004 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0021979724028509 |
| Abstract | The construction of p-n heterojunction is considered a prominent method for promoting efficient separation/migration of photoinduced carriers, thereby enhancing photocatalytic performance. Herein, a series of nanoflower spherical Co(OH)2@CN-x p-n heterojunction photocatalysts were fabricated using a simplified one-step hydrothermal strategy. Notably, Co(OH)2@CN-2 exhibited optimal performance, showcasing a carbon monoxide (CO) evolution rate of 46.2 μmol g−1 h−1 and a xylonic acid yield of 69.9 %. These values are 14.7/3.7 and 2.8/2.4 times higher than those of pristine CN and Co(OH)2, respectively. Additionally, Co(OH)2@CN-2 demonstrated excellent recyclability and chemical stability. Comparative experiments, coupled with 13CO2-labelling testing, confirmed the carbon sources of the obtained CO (72.3 % from CO2 reduction and 27.7 % from xylose oxidation). The charge transfer mechanism in Co(OH)2@CN-x p-n heterojunctions was systematically elucidated using in-situ X-ray photoelectron spectroscopy (in-situ XPS) and density functional theory (DFT) calculations. This work presents a practical approach for constructing p-n heterojunction photocatalysts to enhance photocatalytic biomass oxidation coupled with CO2 reduction. |
| Keywords | Biomass conversion; CO2 reduction; Photocatalysis; P-n heterojunction; Graphitic carbon nitride |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401605. Functional materials |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Dalian Polytechnic University, China |
| Qilu University of Technology, China | |
| School of Engineering | |
| Centre for Future Materials | |
| Suzhou University of Science and Technology, China |
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