Citation: ZHANG Yao-Jun, ZHANG Ke, KANG Le, ZHANG Li. An Eco-friendly Fly Ash-Based Geopolymer: Synthesis and Photocatalytic Properties[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(1): 16-25. doi: 10.11862/CJIC.2017.011 shu

An Eco-friendly Fly Ash-Based Geopolymer: Synthesis and Photocatalytic Properties

College of Materials and Mineral Resources, Xi'an University of Architecture and Technology, Xi'an 710055, China

Corresponding author: ZHANG Yao-Jun, zhangyaojun@xauat.edu.cn
Received Date: 10 August 2016
Revised Date: 1 November 2016

Figures(11)

The fly ash-based geopolymer with regulable pore structure was firstly synthesized by using urotropine as pore forming agent. Meanwhile, a kind of In₂O₃ and NiO co-loaded fly ash-based geopolymer was firstly synthesized by the coupling design of semiconductors. The composition, structure and properties of catalysts were characterized by XRF, TG/DSC, FESEM, XRD, FT-IR and UV-Vis. Furthermore, degradation activities of simulated dyeing wastewater, mechanism and reaction dynamics were studied. The results indicated that the pore structure, BET specific surface area and mesopore volume of geopolymer were remarkably improved by adding pore forming agent. The highest degradation rate (95.65%) of magenta green crystals over the 5% In₂O₃ and 1% NiO co-loaded catalyst should ascribe to the semiconductor coupling system of p-n junction generated from In₂O₃ and NiO as well as strong interaction produced between In₂O₃ and PAFAG so that the separation efficiencies of photogenerated electron-hole pairs were improved and the photocatalytic degradation activities of dye were enhanced.
- aluminosilicates,
- semiconductors,
- photocatalysis,
- fly ash-based geopolymer,
- dye degradation
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