GO/BiOI纳米花状复合光催化剂制备及光催化降解甲醛研究

Preparation of GO/BiOI nanoflower binary composite photocatalyst and photocatalytic degradation of formaldehyde

以碘氧化铋(BiOI)作为载体,在载体上负载氧化石墨烯(GO),构筑GO/BiOI二元复合光催化剂,利用SEM,XRD等分析手段对催化剂的晶相、表面形貌进行分析.甲醛光催化降解实验表明,可见光照射下,当GO添加量为2 mL时,40 min内复合物2 mL GO/BiOI对甲醛的降解率达到71%,远高于纯的BiOI(17%),并进一步阐明光催化降解机理.

In this study,using BiOI as the support,the GO/BiOI binary photocatalyst was constructed by loading GO on the support.The crystal phase and surface morphology of the catalyst were analyzed by means of scanning electron microscopy and XRD.The results of photocatalytic degradation of formaldehyde showed that under visible light irradiation,when the amount of GO was 2 ml,the degradation rate of formaldehyde reached 71%at 40 min,which was much higher than that of pure BiOI,and the photocatalytic degradation mechanism was further clarified.