毕业设计（论文）-Ag3PO4光催化剂的制备及对染料废水的催化性能研究.docVIP

2015届毕业论文 Ag3PO4光催化剂的制备 及对染料废水的性能研究 安全与环境工程学院 学生姓名： 指导教师： 职称 讲师 专 业： 环境工程 班 级： 环境1102班 完成时间： 2015年5月  摘 要 近些年光催化技术备受关注Ag3PO4作为一种新型的光催化材料，光氧化能力水环境净化方面前景本论文采用了一种简单的化学共沉淀法制备了AgCl/Ag3PO4复合光催化剂。在紫外光灯照射下，以番红花红TAgCl/Ag3PO4复合光催化剂的性能进行测定。考查了催化剂的量、番红花红T的初始浓度、时间、清除剂对光催化效果的影响。结果表明：在紫外光照射min时1g/L的Ag@AgCl/Ag3PO4复合光催化剂，对初始浓度为mg/L的降解率达到了%，说明AgCl/Ag3PO4复合光催化剂表现出极强的光降解能力；AgCl/Ag3PO4复合光催化剂在对番红花红T循环使用三次后降解率保持%以上，说明AgCl/Ag3PO4光催化剂稳定性好；通过使NaHCO3和KI作为电子空穴h+)和羟基自由基·OH)的清除剂结果明在番红花红T光催化降解过程中·OH)和空穴(h+）起着重要的作用。 AgCl/Ag3PO4；复合光催化剂；光催化稳定性；番红花红T；染料废水  ABSTRACT Photocatalytic technology which is a new water treatment method, has received much attention in recent years.Ag3PO4 is a new type of photocatalytic material, which has demonstrated strong photocatalytic ability and degradation ability of organic pollutants, it has wide application in the purification of water environment. In this paper ,the new hotocatalyst of Ag@AgCl/Ag3PO4 was made by a simple two step method (chemical co precipitation method).And the degradation catalyst of safranine T dye wastewater in water to study the performance of Ag@AgCl/Ag3PO4 composite photocatalyst under UV light irradiation conditions.The influence of catalyst dosage,concentration of safranine T,illumination time,the stability of the photocatalyst and scavenger on the degradation of safranine T was investigated.The photocatalytic results of the study show that the Ag@AgCl/Ag3PO4 hotocataiyst show strong photooxidative ability for safranine T.The Ag@AgCl/Ag3PO4 could degrade safranine T rate of 98.0% under illumination with UV light for 60 min when the catalyst dosage and concentration safranine T were 1g/L,35mg/L respectively.The Ag@AgCl/Ag3PO4 remained good photocatalytic activity after three times of cycle experiments and photocatalytic degradation not significantly reduce,it shows illustrate the good light stability. By using Ag3PO4 and NaHCO3 and KI as e-, h + and