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- Title
Utilizing full-spectrum sunlight for ammonia decomposition to hydrogen over GaN nanowires-supported Ru nanoparticles on silicon.
- Authors
Li, Jinglin; Sheng, Bowen; Chen, Yiqing; Yang, Jiajia; Wang, Ping; Li, Yixin; Yu, Tianqi; Pan, Hu; Qiu, Liang; Li, Ying; Song, Jun; Zhu, Lei; Wang, Xinqiang; Huang, Zhen; Zhou, Baowen
- Abstract
Photo-thermal-coupling ammonia decomposition presents a promising strategy for utilizing the full-spectrum to address the H2 storage and transportation issues. Herein, we exhibit a photo-thermal-catalytic architecture by assembling gallium nitride nanowires-supported ruthenium nanoparticles on a silicon for extracting hydrogen from ammonia aqueous solution in a batch reactor with only sunlight input. The photoexcited charge carriers make a predomination contribution on H2 activity with the assistance of the photothermal effect. Upon concentrated light illumination, the architecture significantly reduces the activation energy barrier from 1.08 to 0.22 eV. As a result, a high turnover number of 3,400,750 is reported during 400 h of continuous light illumination, and the H2 activity per hour is nearly 1000 times higher than that under the pure thermo-catalytic conditions. The reaction mechanism is extensively studied by coordinating experiments, spectroscopic characterizations, and density functional theory calculation. Outdoor tests validate the viability of such a multifunctional architecture for ammonia decomposition toward H2 under natural sunlight.The author report a Ru NPs/GaN NWs nanoarchitecture on Si for utilizing full spectrum to drive efficient and robust photothermal H2 production from NH3 with a high turnover number of >3,400,750 over 400 h.
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-51810-y