采用硬脂酸法制备了CuO/SnO2/TiO2复合光催化剂,采用XRD及TG-DTA分析对其物相和热稳定性进行了表征,并通过苯酚的光催化降解行为对所制备催化剂的活性进行了评价.结果表明,经500 ℃热处理的CuO/SnO2/TiO2复合光催化剂属于单一的锐钛矿相,且铜、锡氧化物的引入抑制了TiO2的结晶和晶粒的生长.当催化剂组成为Cu:Sn:Ti=0.25:5:100(物质的量比),焙烧温度为500 ℃,催化剂投加量为0.5 g·L-1,溶液pH为4.0时,经3 h光催化反应苯酚的降解率达97.1%.
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