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亚甲基蓝溶液的光催化降解
引用本文:余勇刚,代加林,项先忠,程刚,雷伏涛.亚甲基蓝溶液的光催化降解[J].工业催化,2009,17(11):73-76.
作者姓名:余勇刚  代加林  项先忠  程刚  雷伏涛
作者单位:1.西南石油大学材料科学与工程学院,四川 成都 610500; 2.中海油服务股份有限公司油田化学事业部,北京 101149; 3.中国石油川庆钻探工程有限公司塔里木工程公司,新疆 库尔勒 841000
摘    要:采用三种不同方法对TiO2粉末进行改性,制得蒙脱土/TiO2、Ag/TiO2和SO42-/TiO2催化剂。以亚甲基水蓝溶液的脱色率为指标,采用XRD、SEM和XPS等手段分析考察了3种改性催化剂的活性及抗无机离子的干扰能力。结果显示,三种改性光催化剂在溶液中的活性顺序为:蒙脱土/TiO2>SO42-/TiO2>Ag/TiO2>TiO2。其中,蒙脱土/TiO2活性提高最大,在温度30 ℃和催化剂用量1.0 g·L-1条件下,1 h内使 5.0 mg·L-1的亚甲基蓝溶液的脱色率达90%以上,Ag/TiO2的抗无机离子干扰能力最强。

关 键 词:催化化学  二氧化钛  亚甲基蓝  光催化降解  无机离子干扰  

Photocatalytic degradation of methylene blue solution
YU Yonggang,DAI Jialin,XIANG Xianzhong,CHENG Gang,LEI Futao.Photocatalytic degradation of methylene blue solution[J].Industrial Catalysis,2009,17(11):73-76.
Authors:YU Yonggang  DAI Jialin  XIANG Xianzhong  CHENG Gang  LEI Futao
Affiliation:1.School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China; 2.Oilfield Chemicals Department of China Oilfield Services Limited,Beijing 101149, China; 3.CCDC Tarim Engineering Company,Korla 841000,Xinjiang, China
Abstract:Montmorillonite ( MMT )/TiO2, three different methods and characterized by was used as the probe reaction to assess the Ag/TiO2 and SO42--/TiO2 photocatalysts were prepared with XRD, SEM and XPS. Decoloration of methylene blue solution activity and tolerance to interference of inorganic ions. Photo- catalytic activity of the catalysts for degradation of methylene blue solution declined as follows: MMT/ Ti02 〉 SO2-/TiO2 〉 Ag/TiO2 〉 TiO2. Methylene blue decoloration rate of over 90% was attained over MMT/TiO2 under methylene blue initial concentration of 5.0 mg · L- 1, catalyst dosage of 1.0 ·g L- 1, temperature of 30 ℃ and illumination time of 1 h. Ag/TiO2 exhibited the strongest tolerance to inorganic ions.
Keywords:catalytic chemistry  titania  methylene blue  photocatalytic degradation  inorganic ion interference
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