Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics
Herein, Ag/Ag2MoO4 and Ag/Ag2WO4 have been prepared via a humic acid-assisted precipitation-calcination process and used as catalysts for the hydrogenation reduction of nitro- and azo-aromatic compounds. The Ag/Ag2MoO4 and Ag/Ag2WO4 composites were characterized by X-ray diffraction (XRD), transmiss...
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Elsevier
2020-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419316813 |
| _version_ | 1818528010841620480 |
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| author | Yaya Song Wenyu Xie Chao Yang Dandi Wei Xintai Su Li Li Lu Wang Jide Wang |
| author_facet | Yaya Song Wenyu Xie Chao Yang Dandi Wei Xintai Su Li Li Lu Wang Jide Wang |
| author_sort | Yaya Song |
| collection | DOAJ |
| description | Herein, Ag/Ag2MoO4 and Ag/Ag2WO4 have been prepared via a humic acid-assisted precipitation-calcination process and used as catalysts for the hydrogenation reduction of nitro- and azo-aromatic compounds. The Ag/Ag2MoO4 and Ag/Ag2WO4 composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FTIR) and Raman spectroscopies, UV–vis-NIR diffuse reflectance spectroscopy (DRS), and nitrogen adsorption-desorption analyses. Metallic Ag nanoparticles were in situ generated during the annealing process and spatially confined in the Ag2MoO4 or Ag2WO4 matrix, which effectively inhabited the particle agglomeration of silver. The Ag/Ag2MoO4 and Ag/Ag2WO4 catalysts displayed good performance toward the hydrogenation reduction of 4-nitrophenol, 2-nitroaniline, and rhodamine B in terms of rapid conversion and long term durability. |
| first_indexed | 2024-12-11T06:44:01Z |
| format | Article |
| id | doaj.art-1406b19f4e444de8a7520143f7d496b9 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-11T06:44:01Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-1406b19f4e444de8a7520143f7d496b92022-12-22T01:17:08ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019357745783Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromaticsYaya Song0Wenyu Xie1Chao Yang2Dandi Wei3Xintai Su4Li Li5Lu Wang6Jide Wang7Key Laboratory of Resources Chemistry of Nonferrous Metals (Ministry of Education), College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. ChinaFaculty of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, P. R. ChinaMinistry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China; Corresponding author.Ministry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. ChinaEngineering and Technology Research Center for Environmental Nanomaterials, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, P. R. ChinaMinistry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. ChinaMinistry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. ChinaMinistry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. ChinaHerein, Ag/Ag2MoO4 and Ag/Ag2WO4 have been prepared via a humic acid-assisted precipitation-calcination process and used as catalysts for the hydrogenation reduction of nitro- and azo-aromatic compounds. The Ag/Ag2MoO4 and Ag/Ag2WO4 composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FTIR) and Raman spectroscopies, UV–vis-NIR diffuse reflectance spectroscopy (DRS), and nitrogen adsorption-desorption analyses. Metallic Ag nanoparticles were in situ generated during the annealing process and spatially confined in the Ag2MoO4 or Ag2WO4 matrix, which effectively inhabited the particle agglomeration of silver. The Ag/Ag2MoO4 and Ag/Ag2WO4 catalysts displayed good performance toward the hydrogenation reduction of 4-nitrophenol, 2-nitroaniline, and rhodamine B in terms of rapid conversion and long term durability.http://www.sciencedirect.com/science/article/pii/S2238785419316813Hydrogenation reductionHeterogeneous catalystOrganic pollutantsMetal/metal oxideNanocomposite |
| spellingShingle | Yaya Song Wenyu Xie Chao Yang Dandi Wei Xintai Su Li Li Lu Wang Jide Wang Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics Journal of Materials Research and Technology Hydrogenation reduction Heterogeneous catalyst Organic pollutants Metal/metal oxide Nanocomposite |
| title | Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics |
| title_full | Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics |
| title_fullStr | Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics |
| title_full_unstemmed | Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics |
| title_short | Humic acid-assisted synthesis of Ag/Ag2MoO4 and Ag/Ag2WO4 and their highly catalytic reduction of nitro- and azo-aromatics |
| title_sort | humic acid assisted synthesis of ag ag2moo4 and ag ag2wo4 and their highly catalytic reduction of nitro and azo aromatics |
| topic | Hydrogenation reduction Heterogeneous catalyst Organic pollutants Metal/metal oxide Nanocomposite |
| url | http://www.sciencedirect.com/science/article/pii/S2238785419316813 |
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