W掺杂的大孔-介孔TiO_2光催化剂的制备及性能研究
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摘要
以聚苯乙烯(PS)微球为硬模板,聚醚P123为介孔导向剂,采用溶剂蒸发自组装法(EISA)制备了有序大孔-介孔W-TiO2薄膜。考察了金属W的掺杂量对光催化性能的影响。结果表明,大孔-介孔结构和W掺杂可以显著提高Ti O2薄膜材料在可见光区域的光催化活性,Ti与W的摩尔比为100∶4时,光催化活性最高,光催化降解5 mg/L罗丹明B,60 min降解完全。
Ordered macro-mesoporous W/TiO_2 films were prepared by using polystyrene( PS) microspheres as hard template,polyether P123 as mesoporous guide agent,via the solvent evaporation self-assembly method( EISA). The influence of the W doping amount affect the efficiency of photocatalytic degradation were analyzed. Results revealed that the macro-mesoporous structure and W-doped can significantly improve the photocatalytic degradation of TiO_2,and when the molar ratio of Ti to W is 100∶ 4,the photocatalytic activity is the highest,5 mg/L RhB can be completely degradated by illuminating 60 min.
Ordered macro-mesoporous W/TiO_2 films were prepared by using polystyrene( PS) microspheres as hard template,polyether P123 as mesoporous guide agent,via the solvent evaporation self-assembly method( EISA). The influence of the W doping amount affect the efficiency of photocatalytic degradation were analyzed. Results revealed that the macro-mesoporous structure and W-doped can significantly improve the photocatalytic degradation of TiO_2,and when the molar ratio of Ti to W is 100∶ 4,the photocatalytic activity is the highest,5 mg/L RhB can be completely degradated by illuminating 60 min.
引文
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[3] Liu Z Y,Sun D D,Guo P,et al. An efficient bicomponent Ti O2/Sn O2nanofiber photocatalyst fabricated by electrospinning with a side-by-side dual spinneret method[J].Nano Letters,2007,7(4):1081-1085.
[4]尹利君,钟志勇,余明清,等.纳米二氧化钛可见光下催化效率的研究进展[J].现代化工,2004,24(s1):8-10.
[5]朱良俊,崔玉民.功能材料二氧化钛光催化反应活性的研究[J].材料科学与工艺,2007,15(6):876-880.
[6]郭靖茹,韩枫,李春荣,等. Cu掺杂Ti O2光催化剂降解有机染料的研究[J].应用化工,2016,45(4):653-656.
[7]程萍,金燕苹,顾明元.可见光响应型二氧化钛光催化剂研究进展[J].材料导报,2004,18(7):76-79.
[8]管晶,梁文懂.掺钒二氧化钛的可见光催化性能研究[J].应用化工,2006,35(2):117-119.
[9] Shan A Y,Ghazi T I M,Rashid S A. Immobilisation of titanium dioxide onto supporting materials in heterogeneous photocatalysis:A review[J]. Applied Catalysis A General,2010,389(1):1-8.
[10] Du J,Lai X,Yang N,et al. Hierarchically ordered macromesoporous Ti O2-graphene composite films:Improved mass transfer,reduced charge recombination,and their enhanced photocatalytic activities[J]. Acs Nano,2011,5(1):590-596.
[11] Pan J H,Wan I L. Preparation of highly ordered cubic mesoporous WO3/Ti O2films and their photocatalytic properties[J]. Chemistry of Materials,2006,18(3):847-853.
[12]田志茗,杨林,孙立.纳米WO3的制备及光催化降解亚甲基蓝的研究[J].应用化工,2017,46(5):893-896.
[13]崔玉民,张文保. WO3/Ti O2薄膜光催化降解ARB性能研究[J].稀有金属,2008,32(4):489-492.
[14] Chen D,Chen S,Quan H,et al. Synergetic effects of W6+,doping and Au modification on the photocatalytic performance of mesoporous Ti O2clusters[J]. Advanced Powder Technology,2015,26(6):1590-1596.