Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat
The cobalt ferrite catalyst were synthesised through the substitution of cobalt into iron oxide matrix via co-precipitation and inverse co-precipitation methods. XRD analysis shown that both catalysts exhibited with cubic spinel phase. No impurity was detected in co-precipitated cobalt ferrite phase...
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my.uitm.ir.376312020-12-09T23:37:44Z http://ir.uitm.edu.my/id/eprint/37631/ Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat Selamat, Mohammad Khairul Azam Organic chemistry Oxidation Physical and theoretical chemistry Conditions and laws of chemical reactions Catalysis The cobalt ferrite catalyst were synthesised through the substitution of cobalt into iron oxide matrix via co-precipitation and inverse co-precipitation methods. XRD analysis shown that both catalysts exhibited with cubic spinel phase. No impurity was detected in co-precipitated cobalt ferrite phase. Meanwhile, there is a presence of halide impurity being observed in the inversed co-precipitated catalyst. The FTIR spectrum of co-precipitated cobalt ferrite depicted with higher tetrahedral and octahedral bond substitution compared to inverse co-precipitation catalyst. The particle size of both catalysts were found to be approximately 1.44 ± 0.19 and 1.71 ± 0.28 (xm for co¬precipitation and inverse route, respectively. Interestingly, both catalyst were stable in suspension at neutral pH based on the zeta potential value of -32 mV. The inherent catalytic activity of these catalyst were evaluated based on the degradation of three types of difference dyes. The oxidative degradation of Acid Orange 7 (AO7), Methylene Blue (MB), Rhodamine B (RhB) were performed in the heterogeneous Fenton-like reaction. It was found that different dye behaved differently during the catalysis. AO7 has shown significant removal in both adsorption and catalysis processes; whilst the removal of MB and RhB were negligible. The co-precipitated catalyst shown higher performance in AO7 degradation (66%) compared to inverse co-precipitated catalyst (11%). Such findings suggested that the catalyst synthesised through co-precipitation method was favourable in contrast with the inverse co¬precipitation method. 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/37631/1/37631.pdf Selamat, Mohammad Khairul Azam (2017) Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat. [Student Project] (Unpublished) |
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The cobalt ferrite catalyst were synthesised through the substitution of cobalt into iron oxide matrix via co-precipitation and inverse co-precipitation methods. XRD analysis shown that both catalysts exhibited with cubic spinel phase. No impurity was detected in co-precipitated cobalt ferrite phase. Meanwhile, there is a presence of halide impurity being observed in the inversed co-precipitated catalyst. The FTIR spectrum of co-precipitated cobalt ferrite depicted with higher tetrahedral and octahedral bond substitution compared to inverse co-precipitation catalyst. The particle size of both catalysts were found to be approximately 1.44 ± 0.19 and 1.71 ± 0.28 (xm for co¬precipitation and inverse route, respectively. Interestingly, both catalyst were stable in suspension at neutral pH based on the zeta potential value of -32 mV. The inherent catalytic activity of these catalyst were evaluated based on the degradation of three types of difference dyes. The oxidative degradation of Acid Orange 7 (AO7), Methylene Blue (MB), Rhodamine B (RhB) were performed in the heterogeneous Fenton-like reaction. It was found that different dye behaved differently during the catalysis. AO7 has shown significant removal in both adsorption and catalysis processes; whilst the removal of MB and RhB were negligible. The co-precipitated catalyst shown higher performance in AO7 degradation (66%) compared to inverse co-precipitated catalyst (11%). Such findings suggested that the catalyst synthesised through co-precipitation method was favourable in contrast with the inverse co¬precipitation method. |
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Student Project |
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Selamat, Mohammad Khairul Azam |
author_facet |
Selamat, Mohammad Khairul Azam |
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Selamat, Mohammad Khairul Azam |
title |
Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat |
title_short |
Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat |
title_full |
Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat |
title_fullStr |
Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat |
title_full_unstemmed |
Fenton-like oxidation of dyes using CoxFe3-xO4 catalyst / Mohammad Khairul Azam Selamat |
title_sort |
fenton-like oxidation of dyes using coxfe3-xo4 catalyst / mohammad khairul azam selamat |
publishDate |
2017 |
url |
http://ir.uitm.edu.my/id/eprint/37631/1/37631.pdf http://ir.uitm.edu.my/id/eprint/37631/ |
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1687396668634300416 |
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13.2014675 |