Khadijah Mohammedsaleh Katubi, Alizah Jabeen, Z. A. Alrowaili, M. S. Al-Buriahi, Mamoona Anwar, Alina Manzoor, Imran Shakir, Muhammad Farooq Warsi
{"title":"溶胶凝胶合成掺锰 n 型赤铁矿粉末光催化剂,用于 g-C3N4 薄片上的有机染料降解","authors":"Khadijah Mohammedsaleh Katubi, Alizah Jabeen, Z. A. Alrowaili, M. S. Al-Buriahi, Mamoona Anwar, Alina Manzoor, Imran Shakir, Muhammad Farooq Warsi","doi":"10.1007/s10971-024-06464-z","DOIUrl":null,"url":null,"abstract":"<p>The contamination of water resources by industrialization is the biggest issue over the world and researchers are trying their best for the reduction of water pollution using cost-effective, non-toxic, and reusable photocatalysts. Therefore, this research article outlines the synthesis of manganese-doped iron oxide (Mn<sub>0.5</sub>Fe<sub>1.5</sub>O<sub>3</sub>) using the sol–gel method, and its subsequent combination with graphitic carbon nitride (Mn<sub>0.5</sub>Fe<sub>1.5</sub>O<sub>3</sub>@gCN) through ultrasonication. The resulting materials are investigated for their ability to degrade methylene blue and methyl red organic dyes through mineralization. The fabricated materials were confirmed by X-ray diffraction analysis (XRD), and FTIR spectroscopy, while the UV–visible approach was employed for the determination of optical spectra and bandgap of fabricated photocatalysts. The flat-band potential (0.75 and 0.77 eV) and the type (<i>n</i>-type) of the semiconducting oxides were examined by the Mott–Schottky curves. The prepared photocatalysts degraded 92% methylene blue and 91% methyl red under visible light irradiation for 70 min by pursuing a pseudo-first-order mechanism with rate constants 0.0381 and 0.0316 min<sup>−1</sup>, respectively. The maximum degradation was observed via Mn-Hem@gCN due to the penetration of the sheets of gCN that enhances the surface area of catalysts by trapping the photogenerated species for the photodegradation of wastewater contaminants.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sol–gel synthesis of manganese-doped n-type hematite powder photocatalyst supported on g-C3N4 sheets for the degradation of organic dyes\",\"authors\":\"Khadijah Mohammedsaleh Katubi, Alizah Jabeen, Z. A. Alrowaili, M. S. Al-Buriahi, Mamoona Anwar, Alina Manzoor, Imran Shakir, Muhammad Farooq Warsi\",\"doi\":\"10.1007/s10971-024-06464-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The contamination of water resources by industrialization is the biggest issue over the world and researchers are trying their best for the reduction of water pollution using cost-effective, non-toxic, and reusable photocatalysts. Therefore, this research article outlines the synthesis of manganese-doped iron oxide (Mn<sub>0.5</sub>Fe<sub>1.5</sub>O<sub>3</sub>) using the sol–gel method, and its subsequent combination with graphitic carbon nitride (Mn<sub>0.5</sub>Fe<sub>1.5</sub>O<sub>3</sub>@gCN) through ultrasonication. The resulting materials are investigated for their ability to degrade methylene blue and methyl red organic dyes through mineralization. The fabricated materials were confirmed by X-ray diffraction analysis (XRD), and FTIR spectroscopy, while the UV–visible approach was employed for the determination of optical spectra and bandgap of fabricated photocatalysts. The flat-band potential (0.75 and 0.77 eV) and the type (<i>n</i>-type) of the semiconducting oxides were examined by the Mott–Schottky curves. The prepared photocatalysts degraded 92% methylene blue and 91% methyl red under visible light irradiation for 70 min by pursuing a pseudo-first-order mechanism with rate constants 0.0381 and 0.0316 min<sup>−1</sup>, respectively. 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Sol–gel synthesis of manganese-doped n-type hematite powder photocatalyst supported on g-C3N4 sheets for the degradation of organic dyes
The contamination of water resources by industrialization is the biggest issue over the world and researchers are trying their best for the reduction of water pollution using cost-effective, non-toxic, and reusable photocatalysts. Therefore, this research article outlines the synthesis of manganese-doped iron oxide (Mn0.5Fe1.5O3) using the sol–gel method, and its subsequent combination with graphitic carbon nitride (Mn0.5Fe1.5O3@gCN) through ultrasonication. The resulting materials are investigated for their ability to degrade methylene blue and methyl red organic dyes through mineralization. The fabricated materials were confirmed by X-ray diffraction analysis (XRD), and FTIR spectroscopy, while the UV–visible approach was employed for the determination of optical spectra and bandgap of fabricated photocatalysts. The flat-band potential (0.75 and 0.77 eV) and the type (n-type) of the semiconducting oxides were examined by the Mott–Schottky curves. The prepared photocatalysts degraded 92% methylene blue and 91% methyl red under visible light irradiation for 70 min by pursuing a pseudo-first-order mechanism with rate constants 0.0381 and 0.0316 min−1, respectively. The maximum degradation was observed via Mn-Hem@gCN due to the penetration of the sheets of gCN that enhances the surface area of catalysts by trapping the photogenerated species for the photodegradation of wastewater contaminants.
期刊介绍:
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.