LSPR ENHANCED PHOTO-THERMOCHEMICAL CYCLE FOR WATER SPLITTING

Zheng Xiangsheng; Li Zheng; Zhang Zunheng; Wu Qiliang; Fan Haidong; Zhang Yanwei

doi:10.19912/j.0254-0096.tynxb.2020-0688

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (3) : 61-66. DOI: 10.19912/j.0254-0096.tynxb.2020-0688

LSPR ENHANCED PHOTO-THERMOCHEMICAL CYCLE FOR WATER SPLITTING

Zheng Xiangsheng¹, Li Zheng¹, Zhang Zunheng¹, Wu Qiliang¹, Fan Haidong², Zhang Yanwei¹

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Abstract

Au-loaded P25 samples were prepared for water splitting through photo-thermochemical cycle. LAuP25 and SAuP25 yield 9.90 and 12.60 μmol/g H₂ full-spectrum under full spectrum illumination respectively, or 3.91 and 1.15 μmol/g H₂ under λ>400 nm illumination. The sample material composition and morphology lattice were analyzed by transmission electron microscope （TEM）, X-ray energy dispersive spectroscopy （EDS） and X-ray diffraction technique （XRD）, X-ray photoelectron spectroscopy （XPS）, ultraviolet-visible absorption spectroscopy （UV-vis）, and solid photoluminescence spectroscopy （PL） were used to analyze the optical properties and surface valence of the samples. The density functional theory was used to calculate the oxygen vacancy formation energy on the sample surface. Combining the photothermal chemical cycle and the mechanism of localized surface plasmon resonance （LSPR）, the effect of Au nanoparticles of different sizes on the photothermal chemical cycle of water decomposition was explored.

Key words

water splitting / hydrogen production / photo-thermal / photo-thermochemical cycle / LSPR / TiO₂

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Zheng Xiangsheng, Li Zheng, Zhang Zunheng, Wu Qiliang, Fan Haidong, Zhang Yanwei. LSPR ENHANCED PHOTO-THERMOCHEMICAL CYCLE FOR WATER SPLITTING[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 61-66 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0688

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