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- W2912481005 abstract "To develop a new way of renewable utilization of ground granular blast furnace slag (GGBFS), a novel ZnO-loaded graphene-reinforced alkali-activated slag-based geopolymer (ZnO/GASG) nanocomposite was originally prepared. The photocatalytic performance of ZnO/GASG was evaluated by solar hydrogen production and wastewater treatment of dyeing pollutant. The mechanical strength results indicated that the lamellate graphene inserted in the substrate of alkali-activated slag-based geopolymer (ASG) has played a critical role in crack-arresting extension so as to lead the significant increases of compressive and flexural strengthens of GASG test block. The XRD, FESEM and XPS results revealed that ZnO in the form of amorphous state dispersed on the surface of GASG when the loading approached to 2 wt%, and ZnO existed in the form of zincite when the loading was greater than 10 wt%. UV–vis diffuse reflectance spectra demonstrated that the absorption edge all of ZnO/GASG nanocomposites were blue-shifted due to the quantum size effect. The highest photocatalytic activities for H2 production (2281.3 μmol/g) and wastewater degradation (95.7%, solar light) over 15ZnO/GASG composite were ascribed to the efficient separation of photoinduced electron-hole pairs. The hole and hydroxyl radical play significant role in photocatalytic degradation of dyeing pollutant." @default.
- W2912481005 created "2019-02-21" @default.
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- W2912481005 date "2020-09-01" @default.
- W2912481005 modified "2023-09-25" @default.
- W2912481005 title "Renewable conversion of slag to graphene geopolymer for H2 production and wastewater treatment" @default.
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- W2912481005 doi "https://doi.org/10.1016/j.cattod.2019.02.003" @default.
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