改性活性炭纤维可见光催化联合脱硫脱硝的研究

摘要

利用水合肼还原法制备的TiO2/Cu2O复合光催化剂对活性炭纤维( ACF)进行改性,利用SEM、XPS、BET以及XRD对其进行表征,研究改性后ACF的性质及其脱硫脱硝效果. 研究表明,TiO2/Cu2 O同时改性后的ACF表面孔径减小,但表面石墨碳和羰基( C=O)官能团增加,增强了ACF对NO和SO2的吸附能力,从而提高了脱硫脱硝的效率,该催化剂在40℃、可见光的催化下脱硫效率达90%,脱硝效率达60%.%TiO2/Cu2 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 SO2 removal efficiencies of the catalysts were also investigated. The results show that the pore size of ACF is decreased after modified by TiO2/Cu2 O. The surface functional groups including graphite carbon and carbonyl group are increased, which enhance the NO and SO2 adsorption capacity of ACF. The highest desulfurization and denitrification efficiency are 90% and 60% at 40℃under visible-light.