Review of the fabrication and application of porous materials from silicon-rich industrial solid waste

Abstract

Porous materials have promise as sound insulation, heat barrier, vibration attenuation, and catalysts. Most industrial solid wastes, such as tailings, coal gangue, and fly ash are rich in silicon. Additionally, a high silicon content waste is a potential raw material for the synthesis of silicon-based, multi-porous materials such as zeolites, mesoporous silica, glass—ceramics, and geopolymer foams. Representative silicon-rich industrial solid wastes (SRISWs) are the focus of this mini review of the processing and application of porous silicon materials with respect to the physical and chemical properties of the SRISW. The transformation methods of preparing porous materials from SRISWs are summarized, and their research status in micro-, meso-, and macro-scale porous materials are described. Possible problems in the application of SRISWs and in the preparation of functional porous materials are analyzed, and their development prospects are discussed. This review should provide a typical reference for the recycling and use of industrial solid wastes to develop sustainable “green materials.”

Keywords

silicon-rich industrial solid waste / porous materials / physicochemical properties / material utilization of solid wastes

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