光催化氧化铝泡沫陶瓷的制备及性能

材料导报

2022, Vol. 36

Issue (Z1): 21060249-5

无机非金属及其复合材料

光催化氧化铝泡沫陶瓷的制备及性能

帅树乙, 李婧, 何婷, 陈琴, 陈璐, 黎阳

贵州师范大学材料与建筑工程学院,贵阳 550025

Preparation and Properties of Photocatalytic Alumina Foam Ceramics

SHUAI Shuyi, LI Jing, HE Ting, CHEN Qin, CHEN Lu, LI Yang

School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China

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摘要采用钛溶胶浸渍氧化铝泡沫陶瓷,然后通过凝胶化与煅烧工序制备了表层负载锐钛矿纳米二氧化钛的光催化泡沫陶瓷,考察了钛溶胶浓度对光催化泡沫陶瓷负载增重率、微观形貌、物相结构和光催化性能的影响。结果表明:纳米二氧化钛在泡沫陶瓷上的负载量随钛溶胶浓度的降低而减小,负载增重率从钛溶胶浓度0.565 mol/L的3.07%降低至0.294 mol/L的0.48%;高浓度钛溶胶浸渍造成负载层开裂,低浓度浸渍造成负载层不完整,当钛溶胶浓度为0.334 mol/L时,光催化泡沫陶瓷负载层的微观形貌光滑致密无裂纹,光催化降解性能最佳,在紫外光条件下照射9 h,其对罗丹明B的降解率达99.5%。

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关键词: 溶胶-凝胶纳米二氧化钛氧化铝泡沫陶瓷罗丹明B 光催化降解率

Abstract: Photocatalytic alumina foam ceramics with anatase nano TiO₂ loading layer were successfully prepared by process of dipping, gelation and sintering with titanium sol as dipping slurry and alumina foam ceramics as substrate. And the effects of titanium sol concentration on the loading weight gain rate, microscopic morphology, phase structure and photocatalytic degradation properties of the photocatalytic foam ceramics were investigated. Results showed that the loading gain rate of nano-TiO₂ on the foam ceramics decreased with the titanium sol concentration. When the concentration of titanium sol decreased from 0.565 mol/L to 0.294 mol/L, the loading weight gain rate decreased from 3.07% to 0.48%. Meanwhile, high concentration of titanium sol impregnation would cause the loading layer cracked. However, the loading layer was incomplete under low concentration dipping. The microscopic morphology of the photocatalytic foam ceramics was dense and without any cracks at 0.334 mol/L. At the same time, the foam ceramics had the optimal photocatalytic performance. The degradation rate of rhodamine B was about 99.5% under UV irradiation for 9 h.

Key words: sol-gel nano-TiO₂ Al₂O₃ foam ceramic rhodamine B photocatalytic degradation rate

出版日期: 2022-06-05 发布日期: 2022-06-08

ZTFLH:

TB321

基金资助: 贵阳市科技计划项目(筑科合同[2020]-4-2号);贵州省科技计划项目(黔科合基础[2020]1Y206)

通讯作者: liyang3300@163.com

作者简介: 帅树乙,贵州师范大学材料与工程学院硕士研究生,师从黎阳教授。研究方向为光催化纳米材料的制备与应用。
黎阳,贵州师范大学教授、硕士研究生导师。2013年获得重庆大学工学博士学位。主要研究方向为先进陶瓷材料、纳米光催化剂、石墨烯复合物、陶瓷膜、耐火材料等。在国内外重要期刊发表文章52余篇,授权专利10余项。

引用本文:

帅树乙, 李婧, 何婷, 陈琴, 陈璐, 黎阳. 光催化氧化铝泡沫陶瓷的制备及性能[J]. 材料导报, 2022, 36(Z1): 21060249-5.
SHUAI Shuyi, LI Jing, HE Ting, CHEN Qin, CHEN Lu, LI Yang. Preparation and Properties of Photocatalytic Alumina Foam Ceramics. Materials Reports, 2022, 36(Z1): 21060249-5.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2022/V36/IZ1/21060249

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