科研之友
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摘要
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.
- 出版日期2017-1-10
- 单位西安建筑科技大学
