摘要
采用热溶剂法和溶胶-凝胶法成功制备核壳结构Fe_(3)O_(4)@SiO_(2)@TiO_(2)以及银掺杂改性的Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2)光催化剂,超顺磁性Fe_(3)O_(4)作为磁核,可实现光催化剂的回收利用。通过XRD,UVVis DRS和TEM等测试手段研究银掺杂对光催化剂结构及其化学性能的影响机制。在模拟光照条件下,6%Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2)催化剂对10 mg/L甲基橙溶液显示出优异的光催化性能,30 min染料废水降解率达到94.93%。在相同实验环境下,经过四次循环实验后,Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2)光催化降解率依然在89%以上。
Core-shell Fe_(3)O_(4)@SiO_(2)@TiO_(2) and Ag-doped Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2) photocatalysts were successfully prepared by solvothermal method and sol-gel method.Superparamagnetic Fe_(3)O_(4) as a magnetic core could realize the recycling of photocatalyst.The influence mechanism of silver doping on the structure and chemical properties of the photocatalyst was studied by XRD,UV-Vis DRS and TEM.Under simulated light conditions,6%Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2) catalyst showed excellent photocatalytic performance for 10 mg/L methyl orange solution,and the degradation rate of dye wastewater reached 94.93%in 30 min.Under the same experimental environment,after four cycles of experiments,the photocatalytic degradation rate of Fe_(3)O_(4)@SiO_(2)@Ag-TiO_(2) was still above 89%.
作者
张诚
孙世凯
孙利
梅顺齐
孟凡贺
唐令波
ZHANG Cheng;SUN Shikai;SUN Li;MEI Shunqi;MENG Fanhe;TANG Lingbo(School of Mechanical Engineering and Automation,Wuhan Textile University,Wuhan 430200,China;Hubei Digital Textile Equipment Key Laboratory,Wuhan Textile University,Wuhan 430200,China)
出处
《纺织工程学报》
2025年第6期45-52,共8页
JOURNAL OF ADVANCED TEXTILE ENGINEERING
基金
国家自然科学基金项目(1190426)。
关键词
二氧化钛
光催化
银掺杂
染料废水
溶胶-凝胶
Titanium dioxide
photocatalysis
silver doped
dye wastewater
sol-gel
