Experimental study on direct solar photocatalytic water splitting for hydrogen production using surface uniform concentrators. (26th July 2018)

• Record Type: Journal Article
• Authors: Wei, Qingyu; Yang, Yan; Liu, Haijun; Hou, Junyi; Liu, Maochang; Cao, Fei; Zhao, Liang
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 30(2018)
• Page Start: 13745
• Page End: 13753
• Publication Date: 2018-07-26
• Subjects: Photocatalytic hydrogen production -- System design -- Solar energy -- Photoreactor; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.01.135
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this paper, a direct solar photocatalytic water splitting system with surface uniform concentrators (SUCs) is designed. Parameters influencing hydrogen production rates and energy conversion, viz. sacrificial agent concentration, catalyst concentration and circulation speed, are analyzed under typical days. It is found that the system with SUCs has better performances with higher sacrificial agent, higher catalyst concentration and lower speed: double and triple concentration of the sacrificial agent will improve the energy conversion efficiency by 4.52% and 19.35%, respectively; double and triple the photocatalyst concentration will improve the energy conversion efficiency by 81.32% and 200.00%, respectively; energy conversion efficiency under valve-half-closed and the valve-closed conditions are improve by 21.82% and 118.18% comparing with the valve-open condition. Highlights: A direct solar photocatalytic water splitting system with SUCs is designed. Factors affecting hydrogen production and energy conversion rates are analyzed. Higher sacrifice agent, catalyst concentration and lower speed have better effects.