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Intensified photocatalytic degradation of methylene blue over Fe supported on dendritic fibrous SBA-15: Optimisation, kinetic, isotherm, and reusability

Mohd. Zaki, R. S. R. and A. Jalil, A. and H. D. Setiabudi, H. D. Setiabudi (2023) Intensified photocatalytic degradation of methylene blue over Fe supported on dendritic fibrous SBA-15: Optimisation, kinetic, isotherm, and reusability. Chemical Engineering Research and Design, 198 (NA). pp. 444-458. ISSN 0263-8762

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Official URL: http://dx.doi.org/10.1016/j.cherd.2023.09.009

Abstract

A novel photocatalyst, Fe supported on dendritic fibrous SBA-15 (Fe/DFSBA-15), is synthesised and employed for methylene blue (MB) photocatalytic degradation. The DFSBA-15 was synthesised by applying a microemulsion technique and SBA-15 crystal-seed crystallisation approach. The TEM and FESEM of Fe/DFSBA-15 revealed the revolution of rod-typed SBA-15 into dendritic fibrous-structured (DFSBA-15). The characterisation analyses using FTIR, XRD, BET, PL and UV-Vis DRS, confirmed favourable properties of Fe/DFSBA-15 compared to Fe/SBA-15. Fe/DFSBA-15 exhibits superior properties, attributed to its unique dendritic fibrous morphology that increases the surface area, pore accessibility, and mass transfer. These exceptional features establish it as a highly promising and efficient photocatalyst for diverse applications. Optimisation of MB degradation (Y, %) by using Fe/DFSBA-15 was conducted by employing response surface methodology (RSM) of independent parameters such as catalyst loading (X1, 0.5 – 2.0 g/l), pH (X2, 6 – 10) and initial MB concentration (X3, 10 – 50 mg/l). The model was significant, and MB degradation was optimised at 99.54% (X1 = 1.66 g/l, X2 = 9, and X3 = 27.5 mg/l) along with validation experiments (3.62% error). The research outcome was in agreement with the Langmuir second-order (R2 = 0.99), indicating a predictable trend of the MB degradation process. Interestingly, the excellent degradation and reusability performance of Fe/DFSBA-15 offered a prospective approach for industrial wastewater treatment.

Item Type:Article
Uncontrolled Keywords:DFSBA-15, Methylene Blue, Photocatalytic degradation, Reaction optimisation, Reusability
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:105921
Deposited By: Widya Wahid
Deposited On:26 May 2024 09:09
Last Modified:26 May 2024 09:09

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