水解法制备二氧化钛光催化剂的工艺研究

石油炼制与化工 ›› 2020, Vol. 51 ›› Issue (6): 52-56.

水解法制备二氧化钛光催化剂的工艺研究

赵彬¹,夏维¹,丁国航¹,彭鑫梅²

1. 四川轻化工大学化学工程学院
2.四川轻化工大学计算机学院

收稿日期:2019-12-02 修回日期:2020-01-13 出版日期:2020-06-12 发布日期:2020-06-23
通讯作者: 赵彬 E-mail:103208372@qq.com
基金资助:
四川省大学生创新基金项目

PREPARATION OF TITANIUM DIOXIDE PHOTOCATALYST BY HYDROLYSIS

Received:2019-12-02 Revised:2020-01-13 Online:2020-06-12 Published:2020-06-23
Supported by:

摘要/Abstract

摘要： TiO2光催化剂能有效地利用太阳能解决现有环境问题。以钛酸丁酯为钛源、无水乙醇为溶剂、冰醋酸为抑制剂，在单因素法下确定变量最优值，通过正交试验优化水解法制备TiO2光催化剂，以罗丹明B降解率作为表征催化活性的标准，并与溶胶-凝胶法在最优条件下所制备的TiO2进行催化活性对比。试验结果表明：TiO2在水解法制备TiO2光催化剂的影响因素中，醇钛体积比与煅烧时间的影响较为明显；在水与钛酸丁酯体积比为12:1、乙醇与钛酸丁酯体积比为6:1、煅烧温度为600 ℃、煅烧时间为4 h 的条件下，所得催化剂样品的性能最佳，在光照充分时，对罗丹明B的降解率达到96.4%，远高于溶胶-凝胶法制备的催化剂。

关键词: 光催化, 水解法, 罗丹明B, 降解率

Abstract: TiO2 photocatalyst is one of the technologies to effectively use solar energy to solve the existing environmental pollution problems. A new titanium dioxide photocatalyst was prepared by using butyl titanate as titanium source， anhydrous ethanol as solvent，glacial acetic acid as inhibitor. The optimal value of the variable was determined by single factor method, and TiO2 photocatalyst was prepared by optimized hydrolysis method through orthogonal experiment. The degradation rate of Rhodamine B solution was used as the standard for characterization of catalytic activity, and the catalytic activity was compared with that of TiO2 prepared by sol-gel method under optimal conditions in literature. The experimental results showed that the performance of prepared photocatalyst was influenced by the volume ratio of alcohol to titanium and the calcining time in the process of hydrolysis. The catalyst samples obtained by calcination for 4 hours at 600 ℃ were the best under a water to butyltitanate volume ratio of 12:1 and an ethanol to butyltitanate volume ratio of 6:1, and the degradation rate of Rhodanine B solution reached 96.4% after full illumination.

Key words: Photocatalysis, hydrolysis method, Rhodanine B, degradation rate

中图分类号:

赵彬夏维丁国航彭鑫梅. 水解法制备二氧化钛光催化剂的工艺研究[J]. 石油炼制与化工, 2020, 51(6): 52-56.

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