水热法合成TiO_(2)纳米粒子及可见光条件下降解亚甲基蓝  

Hydrothermal Synthesis of TiO_(2)Nanoparticles and Degradation of Methylene Blue under Visible Light Conditions

作　　者：华丽 曾建华 胡庆兰 朱玉涵 欧小文 邵玉娇 张志文 HUA Li;ZENG Jian-hua;HU Qing-lan;ZHU Yu-han;OU Xiao-wen;SHAO Yu-jiao;ZHANG Zhi-wen(School of Chemistry and Life Science,Hubei University of Education,Wuhan 430205,China)

机构地区：[1]湖北第二师范学院化学与生命科学学院,植物抗癌活性物质提纯与应用湖北省重点实验室,武汉430205

出　　处：《湖北第二师范学院学报》2024年第8期6-12,共7页Journal of Hubei University of Education

基　　金：2023年度湖北省教育厅哲学社会科学研究专项项目“我校新建地方高校教师队伍转型发展对策研究与实践”(23Z504);湖北第二师范学院校级教学研究项目“基于项目孵化机制我校“学-赛-创”模式下创新创业教育改革与实践”(X2023011)。

摘　　要：采用水热法制备二氧化钛(TiO_(2))纳米粒子并用于对亚甲基蓝的光催化降解,通过环境扫描电镜(ESEM)、透射电镜(TEM)、X-射线能谱仪(EDAX)、X-射线衍射仪(XRD),分别进行产物形貌表征、成分和晶型分析,并讨论可见光区域里不同光催化条件对亚甲基蓝的降解率的影响。结果表明:产物属于锐钛矿型TiO_(2),在(λ≥460nm)可见光区域里,光催化最优化实验条件为:亚甲基蓝浓度为20μg/mL,光照时间为60min,光催化剂用量为0.5 g,可达到最大降解率为57.35%。这为进一步发展TiO_(2)基复合光催化剂提供了基础数据。Titanium dioxide(TiO_(2))nanoparticles were prepared in the hydrothermal way and used for photocatalytic degradation of methylene blue.Product morphology,composition and crystal type were respectively analyzed by environmental scanning electron microscope(ESEM),transmission electronmicroscope(TEM),energy dispersed x-ray analysis(EDAX),and X-ray diffractomer techniques(XRD),and the effects of different photocatalytic conditions on the degradation rate of methylene blue in visible light were discussed.Results show that the product belongs to anatase-type TiO_(2).In the visible region(λ≥460nm),the optimal experimental conditions for photocatalysis are as follows:methylene blue concentration is 20μg/mL,light time is 60min,the amount of photocatalyst is 0.5 g and the maximum degradation rate is 57.35%.This provides basic data for further development of TiO_(2)-based composite photocatalyst.

关 键 词：TiO_(2)纳米粒子 光催化 亚甲基蓝 降解 

分 类 号：O643.36[理学—物理化学]