In this paper,a two-step hydrothermal method was employed to successfully prepare SnO2/TiO2 composite photocatalysts,and then adsorption and solid-phase photocatalytic performance experiments were performed with SnO2/TiO2 composites (SnO2 mass ratios of 2wt%,5wt%,10wt%) and pure TiO2 nanotubes,respectively,using methylene blue (MB) as a simulated pollutant.The adsorption experiments showed that all catalysts demonstrated rapid adsorption rate,and the adsorption equilibrium was basically reached in 3 min.The photocatalytic experiments indicated that the 5 wt% SnO2/TiO2 composite had the best solid-phase photocatalytic effect,and its photocatalytic efficiency reached 44.1% after 12h.
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基金资助
国家自然基金(12302167);重庆市科学技术委员会基础与前沿研究计划(cstc2014jcyjA2/30017);山区桥梁与隧道工程国家重点实验室培育基地开放基金(CQSLBF-Y15-6,CQSLBF-Y14-5);国家内河航道整治工程技术研究中心开放基金(SLK2013A03);重庆交通大学实验教学改革与研究基金重点项目(Syj201703);大学生创新创业训练计划项目(X202010618077,S202110618005)
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