Journal
NANOMATERIALS
Volume 12, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/nano12173002
Keywords
geopolymers; adsorption; heavy metals; dyes; wastewater; geopolymer membrane
Categories
Funding
- National Key Research and Development Program of China [2018YFC1602400]
- National Natural Science Foundation of China [51772208, 52073212]
- General Program of Municipal Natural Science Foundation of Tianjin [17JCYBJC22700, 17JCYBJC17000]
- State Scholarship Fund of China Scholarship Council [201709345012, 201706255009]
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This paper provides a review of the development and current status of geopolymers and discusses their potential as adsorbent materials. Geopolymers have high specific surface area and porosity, making them effective adsorbents.
Geopolymer is a porous inorganic material with a three-dimensional mesh structure, good mechanical properties, a simple preparation process (no sintering) and a low economic cost, and it is environmentally friendly. Geopolymer concrete has been widely used in the construction field, and many other studies have revealed that geopolymer will become one of the most promising inorganic materials with unique structure and properties. This paper provides a review of the development and current status of geopolymers and briefly explains the effects of material proportioning, experimental factors and activators on geopolymer performance. Because of the advantages of high specific surface area and high porosity, geopolymers could be used as adsorbent materials. This paper summarizes the research progresses of the adsorption of metal cations, anions, dyes, and gases by geopolymers, which emphasizes the geopolymer membranes in adsorption, and discusses the challenges and opportunities for the development of more efficient, sustainable and practical adsorption protocols.
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