摘要
在sol-gel法制备TiO2的过程中引入过硫酸钾,制备具有可见光活性的硫掺杂二氧化钛,采用FTIR、SEM、XRD、粒度分析等手段进行表征,并以曙红Y溶液作为模型物在可见光作用下考察其光催化降解活性。结果表明:以可见光作光源,制备的硫掺杂二氧化钛能很好地降解曙红Y废水,在催化剂的投入量为0.8g/L,曙红Y溶液的初始浓度为10mg/L,光照时间为40min,pH=5条件下,曙红Y溶液的脱色率达97.16%。
Titanium dioxide （TiO2） codoped with sulfur （S） elements was prepared by a simple sol-gel method using tetrabutyl titanate and potassium persulfate as precursors. FTIR, SEM, XRD and particles size analysis were used to characterize the samples. Photocatalytic degradation of waste water from eosin solution was studied by using sulfur-doped TiO2 as catalyst and visible light as light source. The influences of the dosage of catalyst, concentra- tion of eosin Y, photocatalytic reaction time and pH were investigated. The optimum conditions were found, that is, the proper dosage of sulfur-doped TiO2 catalyst is 0.8g/L, concentration of eosin Y solution is 10mg/L, the photocatalytic reaction time is 40min, pH = 5, decolorization rate of eosin Y solution is 97.16%.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第1期131-136,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(41061044)
广西自然科学基金重点项目(2010GXNSFD013016),广西自然科学基金面上项目(2012GXNSFAA053017)
关键词
硫掺杂TiO2
曙红Y
可见光催化
溶胶-凝胶法
表征
sulfur-doped TiO2
eosin Y
visible-light photocatalytic
sol-gel method
characterization
