γ-Radiation Induced Deposition of Au Nanoparticles on Defect-Rich CdS for Enhanced CO<subscript>2</subscript> Photoreduction Under Visible Light.
In: Water, Air & Soil Pollution, Jg. 235 (2024-03-01), Heft 3, S. 1-11
Online
academicJournal
Zugriff:
Photoreduction of CO2 into high-value chemicals is one of the promising strategies to mitigate CO2 emission and alleviate energy challenges, while the design and development of high-performance photocatalysts are recognized as the pivotal part. Herein, CdS-xAu catalysts with abundant S vacancies and Au nanoparticles were successfully synthesized via one-step γ-ray radiation method. The characterization results showed that the CdS-γ had smaller spherical particles compared to the CdS-H catalyst prepared by hydrothermal method, which was favorable for exposing more active sites. Besides, the Au was reduced by solvated electrons and anchored on the in situ generated S vacancies within CdS. By acting as the photogenerated electrons extractors, the generated Au nanoparticles synergized with S vacancies to promote the charge separation and inhibit the recombination of photogenerated carriers, thus enhancing the photocatalytic activities. Consequently, the CdS-2.5Au photocatalyst with appropriate loading amount presented the optimal performance for achieving the CO yield of 12.48 μmol g−1 h−1, which was superior to CdS-γ and even 2.8 times that of the hydrothermal synthesized CdS-H. This study provided new insights into the applications of γ-ray radiation in the preparation of high-performance photocatalytic materials. [ABSTRACT FROM AUTHOR]
Titel: |
γ-Radiation Induced Deposition of Au Nanoparticles on Defect-Rich CdS for Enhanced CO<subscript>2</subscript> Photoreduction Under Visible Light.
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Autor/in / Beteiligte Person: | Sun, Tao ; Zhao, Pengfei ; Zhou, Qi ; Zhang, Yukun ; Li, Qiuhao ; Chen, Chong |
Link: | |
Zeitschrift: | Water, Air & Soil Pollution, Jg. 235 (2024-03-01), Heft 3, S. 1-11 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 0049-6979 (print) |
DOI: | 10.1007/s11270-024-06975-z |
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