Effect of sacrificial agents on the hydrogen production of water splitting by using sulfide semiconductor photocatalysts

• Main Authors: Zi-yi Liao, 廖子儀
• Other Authors: Jhih-jie Jhan
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/60433904879581896742

碩士 === 逢甲大學 === 化學工程學所 === 96 === n this study, prepared by liquid-phase coprecipitation sulfide photocatalyst that analysis by X-Ray Powder Diffraction to judge liquid coprecipitation characteristics of the compounds of its accession to the summit with the proportion of zinc cadmium have different migration, and also to Pure sulfide mixed phase vary, BET surface area analysis in the preparation of sulfide photocatalyst know in a Zn0.5Cd0.5S the largest surface area which is about 240 m2 / g, that the institute of FESEM preparation photocatalyst the size of the sulfide were nanometer size, EDX analysis, we can know that the analysis of Zn / Cd atoms with the weight percentage of a percentage of its content with the Zn, Cd or formula in increased or reduced and reduced, UV-Vis spectrum analysis can be observed that cadmium zinc sulfide zinc and cadmium in the photocatalyst of different ratio between its absorption spectra between ZnS and CdS, with the increase in the proportion of Zn absorption spectra on and around ZnS; with the Cd accounted for the increase in the proportion of their absorption spectra on and around CdS. Methyl Orange degradation experiment of the best know for Zn0.5Cd0.5S photocatalyst its order Zn0.5Cd0.5S> Zn0.4Cd0.6S> Zn0.6Cd0.4S> Zn0.2Cd0.8S> CdS> Zn0. 8Cd0.2S> ZnS. Zn0.5Cd0.5S and Cu/Zn0.5Cd0.5S final choice as the experimental study of powder, and white and UV light for six hours as the experimental hydrogen production, the expense of inorganic can Na2S/K2SO3 found between 0.4 ~0.6 of its hydrogen production best in the expense of organic, to the best of hydrogen production of ethanol, the order of ethanol> methanol> isopropanol.