Sequential uptake of cadmium and methylene blue from binary solution using zeolite‐TiO2 modified porous CaCu3Ti4O12 photocatalyst

NU Saqib, R Adnan, I Shah… - Environmental Progress & …, 2021 - Wiley Online Library
Environmental Progress & Sustainable Energy, 2021Wiley Online Library
This work describes the synthesis of CaCu3Ti4O12 (CCTO) by a facile conventional oxide
mixing method. The prepared CCTO particles were further modified with anatase TiO2 NPs
(~ 55 nm size) and zeolite supported TiO2 nanoparticles (NPs)(~ 58 nm size) for the
photocatalytic removal of MB and Cd2+ from the aqueous media under compact fluorescent
light. Both nascent and modified CCTO composite materials were characterized using X‐ray
diffraction, scanning electron micrograph/energy dispersion X‐ray, BET, UV–VIS‐DRS, and …
Abstract
This work describes the synthesis of CaCu3Ti4O12 (CCTO) by a facile conventional oxide mixing method. The prepared CCTO particles were further modified with anatase TiO2 NPs (~55 nm size) and zeolite supported TiO2 nanoparticles (NPs) (~58 nm size) for the photocatalytic removal of MB and Cd2+ from the aqueous media under compact fluorescent light. Both nascent and modified CCTO composite materials were characterized using X‐ray diffraction, scanning electron micrograph /energy dispersion X‐ray, BET, UV–VIS‐DRS, and pH of the point of zero charge analyses. These composite materials revealed with remarkable affinity toward MB and Cd2+, whereby the maximum photocatalytic degradation and adsorption capacity reached to 73 and 77 mg/g, respectively. The cations removal efficiencies of the prepared composite materials were found increased in the binary solutions of MB and Cd2+ ions resulting in enhanced degradation and adsorption capacity, qe, up to 132, and 137 mg/g, respectively. The reusability tests revealed that the efficiencies of prepared composites gradually decreased upon reuse.
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