Utilizing full-spectrum sunlight for ammonia decomposition to hydrogen over GaN nanowires-supported Ru nanoparticles on silicon

Jinglin Li, Bowen Sheng, Yiqing Chen, Jiajia Yang, Ping Wang (), Yixin Li, Tianqi Yu, Hu Pan, Liang Qiu, Ying Li, Jun Song (), Lei Zhu, Xinqiang Wang (), Zhen Huang and Baowen Zhou ()
Additional contact information
Jinglin Li: Shanghai Jiao Tong University
Bowen Sheng: Peking University
Yiqing Chen: McGill University
Jiajia Yang: Peking University
Ping Wang: Peking University
Yixin Li: Shanghai Jiao Tong University
Tianqi Yu: Shanghai Jiao Tong University
Hu Pan: Shanghai Jiao Tong University
Liang Qiu: Shanghai Jiao Tong University
Ying Li: Shanghai Jiao Tong University
Jun Song: McGill University
Lei Zhu: Shanghai Jiao Tong University
Xinqiang Wang: Peking University
Zhen Huang: Shanghai Jiao Tong University
Baowen Zhou: Shanghai Jiao Tong University

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: 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.

Date: 2024
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DOI: 10.1038/s41467-024-51810-y

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