氧化石墨烯复合二氧化钛光催化剂的制备及模拟染料废水处理

X522; 用氧化石墨烯(GO)和TiO2水凝胶制备一系列GO/TiO2复合光催化剂.通过SEM,XRD和Raman光谱等对复合光催化剂进行表征,研究不同实验条件下纯TiO2和复合光催化剂对亚甲基蓝(MB)染料废水的脱色效果.结果 表明:复合光催化剂中的TiO2主要为锐钛矿相,其光催化活性优于纯TiO2.当GO的复合量达到15％(质量分数)时,光催化活性最高.在浓度为10mg/L、初始pH值约为8的30mL合成废水中加入250mg复合光催化剂,2.5h后脱色率可达93.1％.通过复合氧化石墨烯,以TiO2为主要成分的复合光催化剂具有一定的可见光光催化活性.根据处理前后模拟废水的紫外-可见光光谱...

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Published in材料工程 Vol. 47; no. 12; pp. 104 - 110
Main Authors 李丹丹, 姚广铮, 梁桂琰, 荣旭发, 薛若雨, 付忠田
Format Journal Article
LanguageChinese
Published 东北大学 资源与土木工程学院,沈阳,110819 20.12.2019
Subjects
光催化活性
亚甲基蓝
GO-TiO2
紫外光
Online AccessGet full text
ISSN1001-4381
DOI10.11868/j.issn.1001-4381.2018.000701

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Abstract X522; 用氧化石墨烯(GO)和TiO2水凝胶制备一系列GO/TiO2复合光催化剂.通过SEM,XRD和Raman光谱等对复合光催化剂进行表征,研究不同实验条件下纯TiO2和复合光催化剂对亚甲基蓝(MB)染料废水的脱色效果.结果 表明:复合光催化剂中的TiO2主要为锐钛矿相,其光催化活性优于纯TiO2.当GO的复合量达到15％(质量分数)时,光催化活性最高.在浓度为10mg/L、初始pH值约为8的30mL合成废水中加入250mg复合光催化剂,2.5h后脱色率可达93.1％.通过复合氧化石墨烯,以TiO2为主要成分的复合光催化剂具有一定的可见光光催化活性.根据处理前后模拟废水的紫外-可见光光谱全波扫描结果推测,GO/TiO2复合光催化剂的光生电荷会直接破坏MB分子中的发光基团,在处理过程中没有新的发光基团产生.
AbstractList X522; 用氧化石墨烯(GO)和TiO2水凝胶制备一系列GO/TiO2复合光催化剂.通过SEM,XRD和Raman光谱等对复合光催化剂进行表征,研究不同实验条件下纯TiO2和复合光催化剂对亚甲基蓝(MB)染料废水的脱色效果.结果 表明:复合光催化剂中的TiO2主要为锐钛矿相,其光催化活性优于纯TiO2.当GO的复合量达到15％(质量分数)时,光催化活性最高.在浓度为10mg/L、初始pH值约为8的30mL合成废水中加入250mg复合光催化剂,2.5h后脱色率可达93.1％.通过复合氧化石墨烯,以TiO2为主要成分的复合光催化剂具有一定的可见光光催化活性.根据处理前后模拟废水的紫外-可见光光谱全波扫描结果推测,GO/TiO2复合光催化剂的光生电荷会直接破坏MB分子中的发光基团,在处理过程中没有新的发光基团产生.
Author 梁桂琰
李丹丹
薛若雨
姚广铮
付忠田
荣旭发
AuthorAffiliation 东北大学 资源与土木工程学院,沈阳,110819
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LI Dan-dan
YAO Guang-zheng
XUE Ruo-yu
LIANG Gui-yan
FU Zhong-tian
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Keywords 光催化活性
亚甲基蓝
GO-TiO2
紫外光
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Snippet X522; 用氧化石墨烯(GO)和TiO2水凝胶制备一系列GO/TiO2复合光催化剂.通过SEM,XRD和Raman光谱等对复合光催化剂进行表征,研究不同实验条件下纯TiO2和复合光催化剂对亚甲基...
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Title 氧化石墨烯复合二氧化钛光催化剂的制备及模拟染料废水处理
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