煅烧温度对Bi_3O_4Cl光催化性能的影响

Influence of Calcination Temperature on Bi_3O_4Cl Photocatalytic Performance

通过固相合成法制备Bi_3O_4Cl半导体光催化剂,实验中以Bi_2O_3和BiOCl为原料,在不同温度下煅烧,得到Bi_3O_4Cl光催化剂。对制备的光催化剂通过XRD、SEM进行物相鉴定和形貌表征。同时,通过甲基橙(methyl orange,MO)降解实验对其进行性能表征,研究不同温度对光催化剂性能的影响,并且探究最佳煅烧温度。根据SEM形貌观察和光降解甲基橙实验结果表明,最佳煅烧温度为450℃,制得的Bi_3O_4Cl半导体光催化剂的颗粒尺寸最小,光催化性能最好。

We prepared Bi_3O_4Cl semiconductor photocatalyst via solid-state method.The procedure which fabricates Bi_3O_4Cl is to utilize Bi_2O_3 and BiOCl as raw materials blended together in appropriate ratio and then calcinated at different temperature.Samples we prepared are characterized by XRD and SEM for phase identification and morphology and evaluated its photocatalytic performance via degradation of methyl orange.It was demonstrated that the most appropriate calcination temperature is 450℃ which the photocatalyst shows the smallest size and the best photocatalytic performance.