Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green
Ag-ZnO/PANI nanocomposite was prepared via the sol-gel technique following in situ oxidative polymerization of polyaniline (PANI). XRD, UV-Vis, and FT-IR spectroscopy were employed to study the crystal size, bandgap energy, and bond structure of as-synthesized nanocomposites. The mean crystallite si...
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| Format: | Article |
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Wiley
2021-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/2451836 |
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| author | Fikradis Habtamu Sintayehu Berhanu Teshome Mender |
| author_facet | Fikradis Habtamu Sintayehu Berhanu Teshome Mender |
| author_sort | Fikradis Habtamu |
| collection | DOAJ |
| description | Ag-ZnO/PANI nanocomposite was prepared via the sol-gel technique following in situ oxidative polymerization of polyaniline (PANI). XRD, UV-Vis, and FT-IR spectroscopy were employed to study the crystal size, bandgap energy, and bond structure of as-synthesized nanocomposites. The mean crystallite size of the nanocomposite determined from XRD was 35.68 nm. Photocatalytic degradation of malachite green (MG) dye using as-synthesized photocatalysts was studied under visible light irradiation. The highest degradation efficiency was recorded for Ag-ZnO/PANI nanocomposites (98.58%) than Ag-ZnO nanoparticles (88.23%) in 120 min. The kinetics of photocatalytic degradation of MG follows pseudo-first-order reaction with rate order of 1.16 10−2 min−1. Moreover, the photocatalytic activity of Ag-ZnO/PANI nanocomposites was evaluated and compared with Ce-Cd oxide, electrospun P(3HB)-TiO2, and with other catalysts in the literature. The optimal conditions for photocatalytic degradation are as follows: the concentration of malachite green (0.2 g/l), pH (8), and the concentration of catalyst load (0.2 g/l) under visible light with an irradiation time of 120 min. |
| format | Article |
| id | doaj-art-d115b11433c34f9f8df6858c76d4d295 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-d115b11433c34f9f8df6858c76d4d2952025-02-03T05:43:47ZengWileyJournal of Chemistry2090-90632090-90712021-01-01202110.1155/2021/24518362451836Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite GreenFikradis Habtamu0Sintayehu Berhanu1Teshome Mender2Department of Chemistry, Wollega University, Nekemte P.O. Box: 395, Nekemte, EthiopiaDepartment of Chemistry, Bonga University, P.O. Box 334, Bonga, EthiopiaDepartment of Chemistry, Bonga University, P.O. Box 334, Bonga, EthiopiaAg-ZnO/PANI nanocomposite was prepared via the sol-gel technique following in situ oxidative polymerization of polyaniline (PANI). XRD, UV-Vis, and FT-IR spectroscopy were employed to study the crystal size, bandgap energy, and bond structure of as-synthesized nanocomposites. The mean crystallite size of the nanocomposite determined from XRD was 35.68 nm. Photocatalytic degradation of malachite green (MG) dye using as-synthesized photocatalysts was studied under visible light irradiation. The highest degradation efficiency was recorded for Ag-ZnO/PANI nanocomposites (98.58%) than Ag-ZnO nanoparticles (88.23%) in 120 min. The kinetics of photocatalytic degradation of MG follows pseudo-first-order reaction with rate order of 1.16 10−2 min−1. Moreover, the photocatalytic activity of Ag-ZnO/PANI nanocomposites was evaluated and compared with Ce-Cd oxide, electrospun P(3HB)-TiO2, and with other catalysts in the literature. The optimal conditions for photocatalytic degradation are as follows: the concentration of malachite green (0.2 g/l), pH (8), and the concentration of catalyst load (0.2 g/l) under visible light with an irradiation time of 120 min.http://dx.doi.org/10.1155/2021/2451836 |
| spellingShingle | Fikradis Habtamu Sintayehu Berhanu Teshome Mender Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green Journal of Chemistry |
| title | Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green |
| title_full | Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green |
| title_fullStr | Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green |
| title_full_unstemmed | Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green |
| title_short | Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green |
| title_sort | polyaniline supported ag doped zno nanocomposite synthesis characterization and kinetics study for photocatalytic degradation of malachite green |
| url | http://dx.doi.org/10.1155/2021/2451836 |
| work_keys_str_mv | AT fikradishabtamu polyanilinesupportedagdopedznonanocompositesynthesischaracterizationandkineticsstudyforphotocatalyticdegradationofmalachitegreen AT sintayehuberhanu polyanilinesupportedagdopedznonanocompositesynthesischaracterizationandkineticsstudyforphotocatalyticdegradationofmalachitegreen AT teshomemender polyanilinesupportedagdopedznonanocompositesynthesischaracterizationandkineticsstudyforphotocatalyticdegradationofmalachitegreen |