National Taiwan University Department of Chemical EngineeringWan, Ben-ZuBen-ZuWanTai, Yu-WeiYu-WeiTaiChen, Jeng-ShiouJeng-ShiouChenYang, Chieh-ChaoChieh-ChaoYang2006-11-142018-06-282006-11-142018-06-282004http://ntur.lib.ntu.edu.tw//handle/246246/2006111501232983The effects of gold loading (i.e., loading processes & pretreatment procedures) on the perovskite titanate substrate (K2La2Ti3O10) for photo-catalytic water splitting were studied. It was found that the gold catalyst prepared from an incipient wetness impregnation process possessed a better activity for water splitting than that prepared from a deposition process. This is because a better crystallinity of K2La2Ti3O10 was preserved from the impregnation process than that from the deposition. Moreover, the existence of gold on K2La2Ti3O10 can enhance the activity of K2La2Ti3O10 for photo-catalytic water splitting. Specially, the activity can be increased significantly, after the reduction of gold ions on K2La2Ti3O10 to nano-gold metal through some pretreatment processes studied in this research. When compared with the best metal–titanate catalyst reported in the literature (i.e., Ni/K2La2Ti3O10), Au/K2La2Ti3O10 possessed a lower hydrogen production rate in UV region & a higher one in vis region. This may be because there is absorption from plasma resonance on the nano-gold surface of Au/K2La2Ti3O10 in the visible region, rather than on the surface of Ni/K2La2Ti3O10.application/pdf186610 bytesapplication/pdfzh-TWWater splittingPhoto-catalyticAuPerovskite titanateHydrogen[SDGs]SDG6[SDGs]SDG7Anisotropy; Combustion; Hydrogen; Irradiation; Oxidation; Perovskite; Photocatalysis; Potassium compounds; Absorption bands; Fossil energy; Photo reactions; Water splitting; Goldjournal article10.1016/j.cattod.2004.04.054http://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501232983/1/4511.pdf