Anh, Mai Ngoc Tuan and Nguyen, Dinh Tien Dung and Ching, Yern Chee and Thanh, Ngo Vo Ke and Phong, Nguyen Thi Phuong and Nguyen, Dai Hai and Bui, Bao Truc and Nguyen-Le, Minh-Tri (2021) Unveiling the SERS activity of silver triangular nanoplates in the enhanced detection of 4-mercaptobenzoic acid. Optik, 248. ISSN 00304026,
Full text not available from this repository.Abstract
Silver triangular nanoplates (SNPs) have gained much attraction worldwide due to their unique optical properties. In our study, we investigated the growth of SNPs via a modified seed-mediated method with NaBH4 as a primary reductant, ascorbic acid (AA) as a secondary reductant and H2O2 as a seed corrosive agent. It was found that small sized spherical seeds with low surface plasmon resonance were obtained in the presence of H2O2. The seed size played a key role for SNPs formation. SNPs size was found to be proportional to the seed size. The experimental results also provided the missing piece of role of AA in the formation of SNPs. The effects of AA on the formation of SNPs in the presence of H2O2 and without H2O2 were investigated via SEM, TEM and UV–Vis measurements. For each case, increasing AA content up to AA:Ag+ ratio of 1.0 would result in increasing the SNPs size and their uniformity. Above that ratio, smaller sized and less uniform SNPs were observed. Smaller sized SNPs fabricated by a seed-mediated method in the presence of H2O2 exhibit stronger SERS enhancement of 4-mercaptobezoic acid than those without H2O2. © 2021 Elsevier GmbH
| Item Type: | Article |
|---|---|
| Funders: | Graduate University of Science and Technology, Vietnam Academy of Science and Technology [Grant No: GUST.STS.ĐT2019-KHVL04], Graduate University of Science and Technology, Vietnam Academy of Science and Technology |
| Uncontrolled Keywords: | Ascorbic; Nanoplates; Seed; SERS; Silver |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering > Department of Chemical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 03 Jul 2024 06:58 |
| Last Modified: | 03 Jul 2024 06:58 |
| URI: | http://eprints.um.edu.my/id/eprint/35927 |
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