可见光催化剂改性粘胶基活性炭纤维脱硫脱硝试验

Experimental study on visible light catalyst modified viscose based activated carbon fiber for desulfurization and denitration

采用水合肼还原法制备了TiO_(2)/Cu_(2)O复合光催化剂,并将其负载在活性炭纤维(ACF)上。利用SEM、XPS、BET和XRD分析了催化剂的性能变化和反应行为。考察了催化剂对NO和SO_(2)的去除效率。结果表明,TiO_(2)/Cu_(2)O改性后ACF的孔径减小。表面官能团包括石墨碳和羰基的增加,提高了活性炭纤维对NO和SO_(2)的吸附能力。在可见光下,当温度为40℃时,TiO_(2)/Cu_(2)O脱硫脱硝效率最高,分别为90%和60%。

TiO_(2)/Cu_(2)O composite photocatalysts were prepared by hydration hydrazine reduction method and loaded on activated carbon fiber(ACF).The SEM,XPS,BET and XRD were used to analyze the property changes and reaction behaviors of catalysts.The NO and SO_(2)removal efficiencies of the catalysts were also investigated.The results show that the pore size of ACF is decreased after modified by TiO_(2)/Cu_(2)O.The surface functional groups including graphite carbon and carbonyl group are increased,which enhances the NO and SO_(2)adsorption capacity of ACF.The highest desulfurization and denitrification efficiency are 90%and 60%at 40℃under visible-light.