掺氮TiO2-活性炭复合吸附材料的制备与性能

Development and Performance Study of Visiblelight Composite Adsorption Material Based on Nitrogendoped Titanium

摘要:

通过浸渍法将制备的掺氮TiO2光催化剂负载到活性炭上制备掺氮TiO2-活性炭复合吸附材料,并对其吸附特性、可见光催化活性以及再生性能进行研究.结果表明：掺氮TiO2光催化剂具有较大的比表面积与良好的可见光吸收性能;活性炭对低浓度甲醛气体具有良好的吸附性能;掺氮TiO2的负载对活性炭颗粒的吸附性能影响甚微;掺氮TiO2-活性炭复合吸附材料具有优越的可见光再生性能,它实现了对低浓度挥发性有机化合物的吸附和光催化分解解耦,提高了活性炭的循环利用性能.

Abstract:

Visiblelight photocatalysis composite adsorption material was prepared by combining activated carbon and nitrogendoped TiO2 by impregnation method.The study results show that the droped nitrogen in TiO2 has improved the visiblelight absorption activity,the activated carbon adsorption is a plausible method for the removal of formaldehyde in the air,the loading of nitrogendoped TiO2 on activated carbon has trifling effect to adsorption process in low concentration of volatile organic compounds (VOCs) condition and nitrogendoped TiO2activated carbon material has excellent visiblelight photocatalytic activity.The results show that this kind of material splits absorption and photocatalysis apart and improve the reuse performance of activated carbon.