Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/152049
Title: | Observation of the interactions of silver nanoparticles (AgNPs) mediated by acid in the aquatic matrices using in-situ liquid cell transmission electron microscopy | Authors: | Fernando, Ishara Tay, Yee Yan Karunasekera, Hasith Zhou, Yan |
Keywords: | Engineering::Environmental engineering | Issue Date: | 2020 | Source: | Fernando, I., Tay, Y. Y., Karunasekera, H. & Zhou, Y. (2020). Observation of the interactions of silver nanoparticles (AgNPs) mediated by acid in the aquatic matrices using in-situ liquid cell transmission electron microscopy. Analytica Chimica Acta, 1104, 47-52. https://dx.doi.org/10.1016/j.aca.2019.12.072 | Journal: | Analytica Chimica Acta | Abstract: | The properties of the solution matrix play a prominent role in determining the interactions between the silver nanoparticles (AgNPs) when they are present in the aquatic environment. Here, using in situ liquid cell transmission electron microscopy (LCTEM), we show that the interaction of AgNPs is predominantly affected by the solution pH. Reducing the pH in the solution will accelerate the aggregation of AgNPs due to the alteration of the charge cloud around the NPs. Aggregates formed in this scenario were non spherical and irregular shaped and were stable under the electron beam irradiation. Individual AgNPs and smaller aggregates moved randomly and approached the larger aggregates before the aggregation process came to an end. We found that during the aggregation process, the mode of jump to contact and the pairwise approach of aggregation differed according to the composition of the solution. Observations made using the LCTEM were further explained using empirical formulae. Our observation on the pH induced interactions provides important insights on predicting the behavior of AgNPs released through many anthropogenic activities in the environment. | URI: | https://hdl.handle.net/10356/152049 | ISSN: | 0003-2670 | DOI: | 10.1016/j.aca.2019.12.072 | Schools: | Interdisciplinary Graduate School (IGS) School of Materials Science and Engineering School of Electrical and Electronic Engineering School of Civil and Environmental Engineering |
Departments: | Facility for Analysis, Characterization, Testing and Simulation | Research Centres: | Nanyang Environment and Water Research Institute Advanced Environmental Biotechnology Centre (AEBC) |
Rights: | © 2019 Elsevier B.V. All rights reserved. This paper was published in Analytica Chimica Acta and is made available with permission of Elsevier B.V. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | CEE Journal Articles EEE Journal Articles IGS Journal Articles MSE Journal Articles NEWRI Journal Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Manuscript_LCTEM.pdf | 7.99 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
50
2
Updated on Mar 23, 2024
Page view(s)
281
Updated on Mar 28, 2024
Download(s) 50
80
Updated on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.