锐钛矿纳米管的微波水热制备及其吸附–光催化性能-IngentaConnect.PDF

第41 卷第1 期 杜艳艳 等：应用于橡胶补强的活性纳米高岭土制备 · 83 · 第41 卷第1 期 硅 酸 盐 学 报 Vol. 41 ，No. 1 2 0 1 3 年 1 月 JOURNAL OF THE CHINESE CERAMIC SOCIETY January ，2013 DOI ：10.7521/j.issn.0454–5648.2013.01.17 锐钛矿纳米管的微波水热制备及其吸附–光催化性能 钮金芬，姚秉华，彭 超，张凡宏 (西安理工大学理学院应用化学系，西安 710054) 摘 要：以锐钛矿TiO2 颗粒(TO)为前驱体，经浓碱水热制得钛酸盐纳米管(TNT)，之后采用微波水热法制备锐钛矿纳米管(WTNT)材料。用X 射线衍 射分析、透射电子显微镜和紫外–可见漫反射对样品进行了表征。研究了所制备材料对四环素的吸附–光催化降解性能。结果表明：在2.0 MPa 条件下 合成的WTNT 为纯锐钛矿相；经过微波水热后的WTNT 仍为中空管状结构，其外径约为10nm ，管长100～200 nm ；TNT 和WTNT 的禁带宽度均大 于前驱体TO 的带隙；3 种催化剂对四环素的吸附过程均服从准二级动力学过程；WTNT 在3 种催化剂中表现出对四环素最好的光降解效果。 关键词：微波水热；锐钛矿；纳米管；四环素；吸附；光催化 中图分类号：O643 文献标志码：A 文章编号：0454–5648(2013)01–0083–06 网络出版时间：2013–01–03 16:09:33 网络出版地址：/kcms/detail/11.2310.TQ1609.201301.83_017.html Microwave Hydrothermal Synthesis of Anatanse Nanotubes and Their Photocatalytic Performance NIU Jinfen ，YAO Binghua，PENG Chao ，ZHANG Fanhong (School of Science, Xi′an University of Technology, Xi′an 710054, China) Abstract: Titanate nanotubes (TNT) were firstly prepared with anatanse particles (TO) as a precursor by a concentrated alkaline hydrothermal method, and then anatanse titania nanotubes (WTNT) were synthesized with TNT as a raw material by a microwave hydrothermal method. The adsorption and photocatalytic degradation performance of tetracycline hydrochloride (TC) were evaluated under dark condition and visible light irradiation. The products were characterized with X-ray diffraction, transmission electron mi- croscope, and UV-visible diffuse