SBA-15是一种应用广泛的介孔材料,具有孔径范围大、比表面积大、孔道结构有序且表面易功能化等特性,因此可以作为污染物吸附与催化降解的理想载体。对SBA-15进行金属改性不仅可以克服其结构单一,对特定污染物选择性低的缺点,还可以弥补传统金属氧化物易团聚,在吸附与降解过程中与污染物接触面积小的不足。通过改性将金属氧化物负载或掺杂在SBA-15的介孔通道或表面,可以制备出新型高效吸附/催化剂,用于水中污染物的定向选择去除。综述了SBA-15的金属改性方法以及在水处理中的应用进展,并展望了金属改性SBA-15未来的研究方向。
SBA-15 is a kind of widely used mesoporous material,which is an ideal carrier for pollutant adsorption and catalytic degradation because of its large pore size range,high specific surface area,ordered pore structure and easy surface functionalization.The metal modification of SBA-15 can not only overcome the shortcomings of its single structure and low selectivity for specific pollutants,but also make up for the shortcomings of traditional metal oxides,which are prone to agglomeration and have a small contact area with pollutants in the adsorption and degradation process.Using rational modification methods to load or dope metal oxides into the mesoporous channels or onto the surface of SBA-15,novel and efficient adsorption/catalysts can be prepared for the targeted selective removal of pollutants in water.This review summarized the metal modification methods of SBA-15 and its application progress in water treatment,while also outlining future research directions for metal-modified SBA-15.
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