范文编号:HG215 范文字数:15784,页数:33 摘要:本文以钛酸丁酯和无水乙醇为主要原料,掺杂一定比例的Fe3+和其他金属物质,采用溶胶—凝胶法结合常规干燥法制备了纳米TiO2光催化剂。采用XRD、BET和TEM等手段对催化剂粒子的晶相、比表面积和粒径的大小进行了表征,以甲基蓝光催化降解为模型反应在汞灯下对所制备催化剂的催化性能进行了评价。结果显示,添加Ca2+物质,控制pH值在3范围,陈化时间在24h,煅烧温度500℃时所制得的催化剂粒径小、分布窄、比表面积大、分散性好、催化效果最好,另外,添加Zn2+制备的催化剂也有较好的催化性能效果。 Abstract: The main of a book take n-butyl titanate and anhydrous alcohol as main raw material, metal matter, adopt the certain proportion of adulteration Fe3+sum other sol gel law has prepared nanometer TiO2 photocatalyst combining with routine drying legal institutions. Adopt XRD, BET and TEM and so on means face to face catalyst seismic crystal each other, specific surface area and grain diameter size be in progress superficial characteristics, use methyl blue photo catalysis degradation be model reaction mercury lamp lower face to face preparation catalyst catalysis function be in progress valuation. Matter result being demonstrated , adding Ca2 +, the value controlling a pH depends on 3 range , seasoning time is in 24 h , catalyst grain diameter made by calcinations temperature 500 ℃is small , distribution is narrow , specific surface area is big , disperse is good , catalysis effect is best , another , adding Zn2 + preparation also has fairly good catalysis function effect 目 录
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