锐钛矿、金红石和板钛矿降解罗丹明 B 光催化活性的比较研究

doi:10.1016/S1872-2067(10)60222-7

催化学报 ›› 2011, Vol. 32 ›› Issue (6): 983-991.DOI: 10.1016/S1872-2067(10)60222-7

锐钛矿、金红石和板钛矿降解罗丹明 B 光催化活性的比较研究

张静1,*, 阎松1, 付鹿1, 王飞1, 原梦琼1, 罗根祥1, 徐倩2, 王翔 2, 李灿2

1辽宁石油化工大学化学与材料科学学院, 辽宁抚顺 113001; 2中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连 116023

收稿日期:2011-01-23 修回日期:2011-03-15 出版日期:2011-06-21 发布日期:2014-10-31

Photocatalytic Degradation of Rhodamine B on Anatase, Rutile, and Brookite TiO2

ZHANG Jing1,*, YAN Song1, FU Lu1, WANG Fei1, YUAN Mengqiong1, LUO Genxiang1, XU Qian2, WANG Xiang2, LI Can2

1School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, Liaoning, China; 2State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China

Received:2011-01-23 Revised:2011-03-15 Online:2011-06-21 Published:2014-10-31

摘要/Abstract

摘要： 详细考察并比较了采用低温制备的锐钛矿、金红石和板钛矿氧化钛降解罗丹明 B 的光催化活性. 与传统高温焙烧制备的金红石相比, 低温制备的金红石粒径小, 比表面积大, 表面羟基数目多, 因此光催化效率明显增加. 更重要的是, 当锐钛矿和金红石具有相似粒径和比表面积时, 金红石具有较高的光降解罗丹明 B 活性. 对于板钛矿氧化钛而言, 虽然其表观光催化活性 (单位时间内降解的罗丹明 B) 远低于锐钛矿或金红石的表观光催化活性, 但是其本征光催化活性 (单位比表面积、单位时间内降解的罗丹明 B) 却远远高于锐钛矿或金红石的本征光催化活性.

关键词: 氧化钛, 紫外拉曼, 晶相, 罗丹明 B, 光催化, 降解

Abstract: This study compared the photocatalytic activities for the degradation of Rhodamine B (RhB) in aqueous solutions of anatase, rutile, and brookite TiO₂. The TiO₂ powders were prepared at low temperature. As compared with rutile obtained by a conventional high temperature calcination, the rutile TiO₂ prepared by the low temperature route had a smaller particle size, higher surface area, and more surface hydroxyl groups, and it gave a high photocatalytic activity. Rutile gave a faster photocatalysis reaction rate than anatase TiO₂ for the same particle size and surface area. A pure brookite phase showed a lower photocatalytic activity when this was expressed in moles converted RhB per hour than the anatase and rutile phases. However, its areal photocatalytic activity expressed in moles converted RhB per hour per surface area was much higher than that of anatase and rutile TiO₂.

Key words: titania, ultra-violet Raman spectroscopy, crystal phase, Rhodamine B, photocatalysis, degradation

张静, 阎松, 付鹿, 王飞, 原梦琼, 罗根祥, 徐倩, 王翔, 李灿. 锐钛矿、金红石和板钛矿降解罗丹明 B 光催化活性的比较研究[J]. 催化学报, 2011, 32(6): 983-991.

ZHANG Jing, YAN Song, FU Lu, WANG Fei, YUAN Meng-Qiong, LUO Gen-Xiang, XU Qian, WANG Xiang, LI Can. Photocatalytic Degradation of Rhodamine B on Anatase, Rutile, and Brookite TiO2[J]. Chinese Journal of Catalysis, 2011, 32(6): 983-991.

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锐钛矿、金红石和板钛矿降解罗丹明 B 光催化活性的比较研究

Photocatalytic Degradation of Rhodamine B on Anatase, Rutile, and Brookite TiO2

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