摘要:

以漂(piao)珠為載體,用(yong)殼聚糖對漂(piao)珠進行改性(xing)(xing),并(bing)采用(yong)溶膠凝(ning)膠法,制備了Fe-N共摻(chan)(chan)雜(za)(za)改性(xing)(xing)TiO2的漂(piao)浮型可見光(guang)(guang)催化(hua)(hua)(hua)劑(Fe-N-TiO2/FP-CTS),使(shi)用(yong)X射線衍射(XRD)、紫外可見分光(guang)(guang)光(guang)(guang)譜(UV-Vis)、N2吸附-脫附(BET)和(he)掃描電子(zi)顯微鏡(SEM)等分析進行表(biao)征。研究結果表(biao)明,用(yong)殼聚糖改性(xing)(xing)漂(piao)珠可以增加復合(he)光(guang)(guang)催化(hua)(hua)(hua)劑的比表(biao)面積和(he)孔容(rong);相較于(yu)N-摻(chan)(chan)雜(za)(za)TiO2/FP復合(he)光(guang)(guang)催化(hua)(hua)(hua)劑,Fe-N共摻(chan)(chan)雜(za)(za)更能促(cu)進對復合(he)光(guang)(guang)催化(hua)(hua)(hua)劑可見光(guang)(guang)的吸收;光(guang)(guang)催化(hua)(hua)(hua)4h后(hou),Fe-N-TiO2/FP-CTS對溶解性(xing)(xing)柴油的降(jiang)解率達到61.7%,明顯優于(yu)Fe-N-TiO2/FP和(he)N-TiO2/FP。當初始pH=5,柴油乳化(hua)(hua)(hua)劑濃度=120mg/L時,復合(he)光(guang)(guang)催化(hua)(hua)(hua)劑對溶解性(xing)(xing)柴油的光(guang)(guang)催化(hua)(hua)(hua)降(jiang)解效果最佳。

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