介孔氧化硅分子筛吸附性能研究进展

Research progress on adsorption property of mesoporous silica molecular sieve

介孔氧化硅分子筛具有比表面积高、孔容大、孔道介孔化及表面硅羟基丰富的特点,通过功能化改性,被广泛应用于吸附法治理环境问题。从吸附过程影响因素、吸附机理、吸附性能及吸附剂结构出发,概述了介孔氧化硅分子筛在吸附无机物(重金属离子和CO_(2))和有机化合物(有机染料、硫化物和挥发性有机物)方面的最新研究进展。分析表明,吸附性能主要由氧化硅结构类型和改性条件决定,制备高选择性吸附剂、提高吸附剂可复用性及开发吸附成套工艺将是未来的发展趋势。

Mesoporous silica molecular sieve has many advantages such as high specific surface area,large pore volume,mesoporous mesoporous and rich surface silica-hydroxyl.Through functional modification,they are widely used in the treatment of environmental problems by adsorption method.Based on the influencing factors of adsorption process,adsorption mechanism,adsorption performance and adsorbent structure,the latest research progress of the molecular sieve in adsorption of inorganic materials(heavy metal ions and CO_(2)) and organic compounds(organic dyes,sulfides and VOCs)was summarized.The analysis shown that the adsorption performance was mainly determined by the type of silica structure and the modification conditions,and the preparation of highly selective adsorbents,improvement of the reusability of adsorbents and development of complete adsorbents will be the future development trend.