Modification of geopolymer with size controlled TiO2 nanoparticle for enhanced durability and catalytic dye degradation under UV light

Geopolymer- a silica alumina-based polymer has attracted generous amount of interest since the last decades as a promising alternative binder to ordinary Portland cement in the construction sector

Moumita Maiti; Manas Sarkar; Soumen Maiti; Muhammad Akbar Malik; Shilang Xu

2020

Scholarcy highlights

  • Geopolymer- a silica alumina-based polymer has attracted generous amount of interest since the last decades as a promising alternative binder to ordinary Portland cement in the construction sector
  • Rutile phase TiO2 NPs were synthesized hydrothermally and annealed at different temperatures which result in differences in their overall size
  • Integration of TiO2 nanoparticles enhances mechanical properties where the optimized composite GT30 shows the maximum compressive and tensile strength
  • GT30 mortar has low water absorption capacity as T30 NPs decrease the apparent volume of permeable voids in its matrix
  • T30 NPs and GT30 are found to degrade >95% dye solution within 90 min towing to the high surface area of TiO2 NPs and free radical generation
  • These results will pave the way to explore industrial waste; fly ash in geopolymer for the excellent durability and wastewater treatment through dye degradation under UV light illumination with the aid of TiO2 NPs

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