WTa₃₇O₉₅.₄₈₇ Nanocatalyst for Pollutant Degradation
2021
Mohd Nasir, Siti Nur Farhana | Ullah, Habib | Abd Mutalib, Muhazri | Saifuddin, Farah Husna | Arzaee, Nurul Affiqah | Tahir, Asif Ali | Mohamad Noh, Mohamad Firdaus | Ibrahim, Mohd Adib | Moria, Hazim | Alghamdi, Mohammed N. | Mat Teridi, Mohd Asri
The release of toxic industrial effluents has created serious impacts on human health and the aquatic ecosystem. WTa₃₇O₉₅.₄₈₇ is a wide-band gap material that was reported in 1971, but no one has investigated its photocatalytic properties due to its wide band gap and unique crystal structure. Herein, we carried out detailed experimental and density functional theory (DFT) simulations of WTa₃₇O₉₅.₄₈₇ nanocatalysts. The influence of temperature and light intensity on their crystallography, morphology, optical, and photocatalytic properties was studied. The powder obtained at 150 °C (WT-1) exhibited higher photocatalytic activity of 99% of methylene blue dye degradation within 30 min with a pseudo-first-order kinetics constant of 0.0643 min–¹. DFT simulations revealed a good correlation between theory and experiment of electronic properties of WTa₃₇O₉₅.₄₈₇, which consequently validate the catalytic performance of the catalyst. The WTa₃₇O₉₅.₄₈₇ nanocatalyst is proposed as a novel and effective photocatalyst for treating dye effluents of wastewater.
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