合成了一种低带隙、富缺陷的纳米花球状MoS₂,并利用其作为太阳能吸收材料,再以亲水性聚丙烯酰胺为骨架,通过交联发泡聚合法制备了一种具有良好机械稳定性和耐盐性的海绵状MoS₂基多孔气凝胶(MoS₂-PH)。该气凝胶具有协同界面光蒸汽转化性能和催化降解水中有机污染物的双功能,可重复利用性好。分析结果表明,合成的MoS₂纳米片组装形成同心、分离良好的分层结构,类似于纳米花球;合成的MoS₂-PH不仅具有3.954 kg/(m²·h)的高蒸发速率,而且还具有显著的染料降解效率(81%),这研究为解决淡水短缺和水污染提出了一种巧妙的方法。

A low band-gap,defect-rich nanoflower spheroidal MoS₂ is synthesized,and used as a solar energy absorbing material.Taking hydrophilic polyacrylamide as the framework,a spongy MoS₂-based porous aerogel (MoS₂-PH) with good mechanical stability and salt resistance is prepared via cross-linking foaming polymerization method.This aerogel has two functions including synergistic interfacial photo-vapor conversion and catalyzing the degradation of organic pollutants in water,and shows a good reusability.Analysis results show that the assembled MoS₂ nanosheets form a concentric and well-separated layered structure,which is similar to nanospheres.The synthesized MoS₂-PH has a high evaporation rate of 3.954 kg·m^-2·h^-1,and exhibits a remarkable dye degradation efficiency (81%),which presents an ingenious solution to the shortage of fresh water and water pollution.

王桂灵(1999-),女,硕士生,研究方向为水凝胶材料,18851769226@163.com;毛辉麾(1981-),男,博士后,副教授,研究方向为石墨相氮化碳、石墨烯等碳质材料的研究开发及其在光催化和双碳技术方面的应用等,通讯联系人,maohuihui＿beijing@126.com。