Bi_(2)S_(3)/K-C_(3)N_(4)纳米棒复合材料对甲醛的光降解  

Photodegradation of Formaldehyde by Bi_(2)S_(3)/K-C_(3)N_(4) Nanorod Composites

作　　者：闫刚 胡维 YAN Gang;HU Wei(Jilin Jianzhu University,Changchun Jilin 130118,China)

机构地区：[1]吉林建筑大学,吉林长春130118

出　　处：《辽宁化工》2024年第8期1223-1226,共4页Liaoning Chemical Industry

摘　　要：通过控制复合物中Bi_(2)S_(3)与K-C_(3)N_(4)的比例,制备了不同负载比的Bi_(2)S_(3)/K-C_(3)N_(4)复合物。采用XRD、TEM、SEM和UV-Vis-DRS等技术对催化剂的晶相、形貌进行表征,并以甲醛为降解对象,评价其可见光催化活性。结果表明,在可见光照射下,Bi_(2)S_(3)/K-C_(3)N_(4)-0.07复合光催化剂在60 min内对甲醛气体的降解率达到了78%,远高于纯Bi_(2)S_(3)和K-C_(3)N_(4)。对复合物的形貌、性能进行了详细的讨论并进一步阐明了光催化降解机理。Bi_(2)S_(3)/K-C_(3)N_(4)complexes with different loading ratios were prepared by controlling the ratio of Bi_(2)S_(3)to K-C_(3)N_(4)in the complex.XRD,TEM,SEM and UV-VIS-DRS were used to characterize the crystal phase and morphology of the catalyst,and formaldehyde was used as the degradation object to evaluate its visible photocatalytic activity.The results showed that under visible light irradiation,the degradation rate of Bi_(2)S_(3)/K-C_(3)N_(4)-0.07 composite catalyst to formaldehyde gas reached 78%within 60 min,which was much higher than that of pure Bi_(2)S_(3)and K-C_(3)N_(4).The morphology and properties of the complex were discussed in detail,and the photocatalytic degradation mechanism was further elucidated.

关 键 词：Bi_(2)S_(3) K-C3N4 甲醛 光催化 

分 类 号：O643.36[理学—物理化学]