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摘要
以钛酸正丁酯、硝酸银和四氯化钛作为原料,以聚苯乙烯(PS)为模版,采用溶胶-凝胶法、结合水热及光照处理合成了银(Ag)不同掺杂量的金红石相复合锐钛矿相二氧化钛(R-TiO2/A-TiO2)多孔光催化材料。并对样品的结构、形貌、光吸收性能及比表面积进行表征,在光照条件下研究了对罗丹明B(RhB)的降解效果。研究结果表明,当Ag掺杂量为3%(wt,质量分数)制得的R-TiO2/A-TiO2光催化活性最佳,光照60min后,对RhB的降解率为99.8%。
Abstract
R-TiO2/A-TiO2 photocatalytic materials with different Ag doping ratio were prepared using tetrabutyl titanate,silver nitrate and titanic tetrachloride as reaction precursors and polystyrene (PS) as the template by the sol-gel method,hydrothermal process and irradiation reaction.The structure,morphology,element distribution and specific surface area of R-TiO2(5%)/A-TiO2 were characterized by XRD,SEM,EDX,UV-Vis and BET.The photocatalytic degradation of rhodamine B solution was performed under UV-Vis light irradiation.According to experimental results,3% Ag doping ratio showed the better photocatalytic activity than other samples,indicating that rhodamine B degradation rate was about 99.8% after light irradiation for 60min.
关键词
二氧化钛
/
光催化
/
溶胶-凝胶法
/
银
/
罗丹明B
Key words
titanium dioxide
/
photocatalysis
/
sol-gel method
/
silver
/
rhodamine B
Ag掺杂R-TiO2/A-TiO2孔材料的合成及光催化性能研究[J].
化工新型材料, 2018, 46(6): 176-179 DOI:
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基金资助
国家自然科学基金(210030010);河南省科技创新杰出青年项目(144100510005);河南省高校创新人才项目(13HASTIT014)
