Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology
Ag<sub>2</sub>MoO<sub>4</sub> crystals were prepared by a precipitation method by mixing parent solutions of silver nitrate and sodium molybdate. The effects of experimental parameters such as temperature, concentration, and pH were studied. The samples were found to be cryst...
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| Format: | Article |
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MDPI AG
2024-03-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/14/3/254 |
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| author | Sara Calistri Alessandro Gessi Giuseppe Marghella Stefania Bruni Alberto Ubaldini |
| author_facet | Sara Calistri Alessandro Gessi Giuseppe Marghella Stefania Bruni Alberto Ubaldini |
| author_sort | Sara Calistri |
| collection | DOAJ |
| description | Ag<sub>2</sub>MoO<sub>4</sub> crystals were prepared by a precipitation method by mixing parent solutions of silver nitrate and sodium molybdate. The effects of experimental parameters such as temperature, concentration, and pH were studied. The samples were found to be crystalline, pure, and monophasic in all cases, except in the case of very low pH. The precipitation leads to the formation of the cubic phase β and no secondary phase is present within the limits of detection of XRD and Raman spectroscopy. However, in some cases, at high temperature and high pH, silver oxide nanoparticles form on the surfaces of the crystals, which create a fluorescence background in the Raman spectra, which is otherwise absent. Analyses with the electron microscope have highlighted that the most common crystalline shape is octahedral, which is the most prevalent at low temperatures and pH around 7, but others are also possible, in particular at high temperatures. No growth occurs after precipitation, so crystals with different appearances form at the same time. |
| first_indexed | 2024-04-24T18:24:49Z |
| format | Article |
| id | doaj.art-a5ecfda3693c49dcb6aded665a2ada0f |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-24T18:24:49Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-a5ecfda3693c49dcb6aded665a2ada0f2024-03-27T13:32:29ZengMDPI AGCrystals2073-43522024-03-0114325410.3390/cryst14030254Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal MorphologySara Calistri0Alessandro Gessi1Giuseppe Marghella2Stefania Bruni3Alberto Ubaldini4Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, 40126 Bologna, ItalyENEA, Via Martiri di Monte Sole 4, 40129 Bologna, ItalyENEA, Via Martiri di Monte Sole 4, 40129 Bologna, ItalyENEA, Via Martiri di Monte Sole 4, 40129 Bologna, ItalyENEA, Via Martiri di Monte Sole 4, 40129 Bologna, ItalyAg<sub>2</sub>MoO<sub>4</sub> crystals were prepared by a precipitation method by mixing parent solutions of silver nitrate and sodium molybdate. The effects of experimental parameters such as temperature, concentration, and pH were studied. The samples were found to be crystalline, pure, and monophasic in all cases, except in the case of very low pH. The precipitation leads to the formation of the cubic phase β and no secondary phase is present within the limits of detection of XRD and Raman spectroscopy. However, in some cases, at high temperature and high pH, silver oxide nanoparticles form on the surfaces of the crystals, which create a fluorescence background in the Raman spectra, which is otherwise absent. Analyses with the electron microscope have highlighted that the most common crystalline shape is octahedral, which is the most prevalent at low temperatures and pH around 7, but others are also possible, in particular at high temperatures. No growth occurs after precipitation, so crystals with different appearances form at the same time.https://www.mdpi.com/2073-4352/14/3/254precipitationcrystal growthmorphologynanoparticles |
| spellingShingle | Sara Calistri Alessandro Gessi Giuseppe Marghella Stefania Bruni Alberto Ubaldini Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology Crystals precipitation crystal growth morphology nanoparticles |
| title | Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology |
| title_full | Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology |
| title_fullStr | Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology |
| title_full_unstemmed | Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology |
| title_short | Characterization and Formation Mechanism of Ag<sub>2</sub>MoO<sub>4</sub> Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology |
| title_sort | characterization and formation mechanism of ag sub 2 sub moo sub 4 sub crystals via precipitation method influence of experimental parameters and crystal morphology |
| topic | precipitation crystal growth morphology nanoparticles |
| url | https://www.mdpi.com/2073-4352/14/3/254 |
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