Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength
The demands from nanotechnology industry have been increasing every year. The number of usage of ZnO nanoparticles in the consumer products is also rapidly increasing. The release of nanoparticles to the environment may affect the environment itself and eventually on the human health. Water chemistr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Transactions on Science and Technology
2017
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/17123/ http://ir.unimas.my/id/eprint/17123/1/Transformation%20of%20zinc%20oxide%20nanoparticles%20%28abstract%29.pdf |
| _version_ | 1848838214190628864 |
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| author | Velintine, Valach A. Boon, Siong Wee Suk, Fun Chin Kuan, Ying Kok |
| author_facet | Velintine, Valach A. Boon, Siong Wee Suk, Fun Chin Kuan, Ying Kok |
| author_sort | Velintine, Valach A. |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | The demands from nanotechnology industry have been increasing every year. The number of usage of ZnO nanoparticles in the consumer products is also rapidly increasing. The release of nanoparticles to the environment may affect the environment itself and eventually on the human health. Water chemistry such as pH and ionic strength play important roles in the release of Zn ions. In this study, two commercially available zinc oxide (ZnO) nanoparticles of size < 50 nm and < 100 nm were purchased and were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy. XRD and TEM confirmed that the size of the particles was in the range stated at the labels. The dissolutions were measured using inductively coupled plasma optical emission spectroscopy (ICP-OES). It was found that the dissolution is higher at pH 1 and decreased as the pH increased. In terms of ionic strength, small size nanoparticles are stable at lower pH while bigger size is ionic strength dependence. |
| first_indexed | 2025-11-15T06:52:00Z |
| format | Article |
| id | unimas-17123 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:52:00Z |
| publishDate | 2017 |
| publisher | Transactions on Science and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-171232017-08-09T02:15:19Z http://ir.unimas.my/id/eprint/17123/ Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength Velintine, Valach A. Boon, Siong Wee Suk, Fun Chin Kuan, Ying Kok QD Chemistry The demands from nanotechnology industry have been increasing every year. The number of usage of ZnO nanoparticles in the consumer products is also rapidly increasing. The release of nanoparticles to the environment may affect the environment itself and eventually on the human health. Water chemistry such as pH and ionic strength play important roles in the release of Zn ions. In this study, two commercially available zinc oxide (ZnO) nanoparticles of size < 50 nm and < 100 nm were purchased and were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy. XRD and TEM confirmed that the size of the particles was in the range stated at the labels. The dissolutions were measured using inductively coupled plasma optical emission spectroscopy (ICP-OES). It was found that the dissolution is higher at pH 1 and decreased as the pH increased. In terms of ionic strength, small size nanoparticles are stable at lower pH while bigger size is ionic strength dependence. Transactions on Science and Technology 2017 Article PeerReviewed text en http://ir.unimas.my/id/eprint/17123/1/Transformation%20of%20zinc%20oxide%20nanoparticles%20%28abstract%29.pdf Velintine, Valach A. and Boon, Siong Wee and Suk, Fun Chin and Kuan, Ying Kok (2017) Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength. Transactions on Science and Technology, 4 (2). pp. 123-136. ISSN 2289-8786 http://www.transectscience.org/pdfs/vol4/no2/vol4n2.html |
| spellingShingle | QD Chemistry Velintine, Valach A. Boon, Siong Wee Suk, Fun Chin Kuan, Ying Kok Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title | Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title_full | Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title_fullStr | Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title_full_unstemmed | Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title_short | Transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of pH and ionic strength |
| title_sort | transformation of zinc oxide nanoparticles under environmentally relevant conditions: influence of ph and ionic strength |
| topic | QD Chemistry |
| url | http://ir.unimas.my/id/eprint/17123/ http://ir.unimas.my/id/eprint/17123/ http://ir.unimas.my/id/eprint/17123/1/Transformation%20of%20zinc%20oxide%20nanoparticles%20%28abstract%29.pdf |