Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent
The size and shape distribution of metal nanoparticles (NPs) are important parameters that need to be tuned in order to achieve desired properties of materials for practical applications. In the current work, we present the synthesis of palladium NPs supported on silica by three different methods, a...
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MDPI AG
2018-02-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/2/135 |
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| author | Aram L. Bugaev Vladimir A. Polyakov Andrei A. Tereshchenko Ashura N. Isaeva Alina A. Skorynina Elizaveta G. Kamyshova Andriy P. Budnyk Tatiana A. Lastovina Alexander V. Soldatov |
| author_facet | Aram L. Bugaev Vladimir A. Polyakov Andrei A. Tereshchenko Ashura N. Isaeva Alina A. Skorynina Elizaveta G. Kamyshova Andriy P. Budnyk Tatiana A. Lastovina Alexander V. Soldatov |
| author_sort | Aram L. Bugaev |
| collection | DOAJ |
| description | The size and shape distribution of metal nanoparticles (NPs) are important parameters that need to be tuned in order to achieve desired properties of materials for practical applications. In the current work, we present the synthesis of palladium NPs supported on silica by three different methods, applying reduction by sodium borohydride, hydrazine vapors, and polyethylene glycol (PEG). The synthesized materials were characterized by X-ray diffraction, X-ray fluorescence, transmission electron microscopy, surface area and porosity measurements, and thermogravimetric analysis. Similar nanoparticle sizes with narrow size distribution centered at 8 nm were obtained after reduction by sodium borohydride and hydrazine vapors, whereas the smallest particle size of about 4.8 nm was obtained after reduction by PEG. The effect of modification of the initial palladium chloride compound by ammonium hydroxide was found to lead to the formation of larger particles with average size of 15 nm and broader size distribution. In addition, the process of the reduction of palladium by PEG at different reduction stages was monitored by UV-Vis spectroscopy. CO-stripping voltammetry showed that reduction in hydrazine and in PEG allowed the preparation of Pd NPs with high electrochemically-active surface area. Such NPs are promising materials for electrocatalysis. |
| first_indexed | 2024-12-10T10:24:45Z |
| format | Article |
| id | doaj.art-b86d1ced3e00470a8390ec506f471e18 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-10T10:24:45Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-b86d1ced3e00470a8390ec506f471e182022-12-22T01:52:46ZengMDPI AGMetals2075-47012018-02-018213510.3390/met8020135met8020135Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical ReagentAram L. Bugaev0Vladimir A. Polyakov1Andrei A. Tereshchenko2Ashura N. Isaeva3Alina A. Skorynina4Elizaveta G. Kamyshova5Andriy P. Budnyk6Tatiana A. Lastovina7Alexander V. Soldatov8The Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe Smart Materials Research Center, Southern Federal University, 178/24 Sladkova, Rostov-on-Don 344090, RussiaThe size and shape distribution of metal nanoparticles (NPs) are important parameters that need to be tuned in order to achieve desired properties of materials for practical applications. In the current work, we present the synthesis of palladium NPs supported on silica by three different methods, applying reduction by sodium borohydride, hydrazine vapors, and polyethylene glycol (PEG). The synthesized materials were characterized by X-ray diffraction, X-ray fluorescence, transmission electron microscopy, surface area and porosity measurements, and thermogravimetric analysis. Similar nanoparticle sizes with narrow size distribution centered at 8 nm were obtained after reduction by sodium borohydride and hydrazine vapors, whereas the smallest particle size of about 4.8 nm was obtained after reduction by PEG. The effect of modification of the initial palladium chloride compound by ammonium hydroxide was found to lead to the formation of larger particles with average size of 15 nm and broader size distribution. In addition, the process of the reduction of palladium by PEG at different reduction stages was monitored by UV-Vis spectroscopy. CO-stripping voltammetry showed that reduction in hydrazine and in PEG allowed the preparation of Pd NPs with high electrochemically-active surface area. Such NPs are promising materials for electrocatalysis.http://www.mdpi.com/2075-4701/8/2/135palladium nanoparticleshydrazinewet-synthesissolvothermal polyol synthesis |
| spellingShingle | Aram L. Bugaev Vladimir A. Polyakov Andrei A. Tereshchenko Ashura N. Isaeva Alina A. Skorynina Elizaveta G. Kamyshova Andriy P. Budnyk Tatiana A. Lastovina Alexander V. Soldatov Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent Metals palladium nanoparticles hydrazine wet-synthesis solvothermal polyol synthesis |
| title | Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent |
| title_full | Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent |
| title_fullStr | Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent |
| title_full_unstemmed | Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent |
| title_short | Chemical Synthesis and Characterization of Pd/SiO2: The Effect of Chemical Reagent |
| title_sort | chemical synthesis and characterization of pd sio2 the effect of chemical reagent |
| topic | palladium nanoparticles hydrazine wet-synthesis solvothermal polyol synthesis |
| url | http://www.mdpi.com/2075-4701/8/2/135 |
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