Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol
Bimetallic gold-silver nanoparticles as unique catalysts were prepared using seed colloidal techniques. The catalytic capabilities of the nanoparticles were ascertained in the reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. Our results clearly showed that the rate...
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| Format: | Article |
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MDPI
2018
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| author | Berahim, Nurafaliana Basirun, Wan Jefrey Leo, Bey Fen Johan, Mohd Rafie |
| author_facet | Berahim, Nurafaliana Basirun, Wan Jefrey Leo, Bey Fen Johan, Mohd Rafie |
| author_sort | Berahim, Nurafaliana |
| collection | UM |
| description | Bimetallic gold-silver nanoparticles as unique catalysts were prepared using seed colloidal techniques. The catalytic capabilities of the nanoparticles were ascertained in the reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. Our results clearly showed that the rate of 4-NP reduction to 4-AP increased with a corresponding decrease in the diameter of the bimetallic NPs. The Au-Ag nanoparticles prepared with 5.0 mL Au seed volume indicated higher reduction activity, which was approximately 1.2 times higher than that of 2.0 mL Au seed volume in the reductive conversion of 4-NP to 4-AP. However, the monometallic NPs showed relatively less catalytic activity in the reductive conversion of 4-NP to 4-AP compared to bimetallic Au-Ag nanoparticles. Our studies also reinforced the improved catalytic properties of the bimetallic Au-Ag nanoparticles structure with a direct impact of the size or diameter and relative composition of the bimetallic catalytic nanoparticles. |
| first_indexed | 2024-03-06T05:56:36Z |
| format | Article |
| id | um.eprints-22317 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:56:36Z |
| publishDate | 2018 |
| publisher | MDPI |
| record_format | dspace |
| spelling | um.eprints-223172019-09-13T01:54:40Z http://eprints.um.edu.my/22317/ Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol Berahim, Nurafaliana Basirun, Wan Jefrey Leo, Bey Fen Johan, Mohd Rafie QD Chemistry R Medicine TJ Mechanical engineering and machinery Bimetallic gold-silver nanoparticles as unique catalysts were prepared using seed colloidal techniques. The catalytic capabilities of the nanoparticles were ascertained in the reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. Our results clearly showed that the rate of 4-NP reduction to 4-AP increased with a corresponding decrease in the diameter of the bimetallic NPs. The Au-Ag nanoparticles prepared with 5.0 mL Au seed volume indicated higher reduction activity, which was approximately 1.2 times higher than that of 2.0 mL Au seed volume in the reductive conversion of 4-NP to 4-AP. However, the monometallic NPs showed relatively less catalytic activity in the reductive conversion of 4-NP to 4-AP compared to bimetallic Au-Ag nanoparticles. Our studies also reinforced the improved catalytic properties of the bimetallic Au-Ag nanoparticles structure with a direct impact of the size or diameter and relative composition of the bimetallic catalytic nanoparticles. MDPI 2018 Article PeerReviewed Berahim, Nurafaliana and Basirun, Wan Jefrey and Leo, Bey Fen and Johan, Mohd Rafie (2018) Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol. Catalysts, 8 (10). p. 412. ISSN 2073-4344, DOI https://doi.org/10.3390/catal8100412 <https://doi.org/10.3390/catal8100412>. https://doi.org/10.3390/catal8100412 doi:10.3390/catal8100412 |
| spellingShingle | QD Chemistry R Medicine TJ Mechanical engineering and machinery Berahim, Nurafaliana Basirun, Wan Jefrey Leo, Bey Fen Johan, Mohd Rafie Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title | Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title_full | Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title_fullStr | Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title_full_unstemmed | Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title_short | Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol |
| title_sort | synthesis of bimetallic gold silver au ag nanoparticles for the catalytic reduction of 4 nitrophenol to 4 aminophenol |
| topic | QD Chemistry R Medicine TJ Mechanical engineering and machinery |
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