Masking agent-controlled discriminative Hg2+ and Cu2+ sensing by quinonediimine dye formation of aniline-functionalized silica nanoparticles
- Authors
- Kim, Da Bin; Lee, Kyung Hyun; Park, Ka Young; Ahn, Sangdoo; Chang, Suk-Kyu
- Issue Date
- Apr-2018
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Hg2+ sensing; Cu2+ sensing; Discriminative signaling; Silica nanoparticles; Office scanner; Quinonediimine dye
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.259, pp 847 - 854
- Pages
- 8
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 259
- Start Page
- 847
- End Page
- 854
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/2269
- DOI
- 10.1016/j.snb.2017.12.100
- ISSN
- 0925-4005
- Abstract
- A novel masking agent-controlled discriminative Hg2+- and Cu2+-selective reaction-based sensing system was investigated. Signaling was carried out by the metal-assisted oxidative coupling of aniline-functionalized silica nanoparticles with 3-methyl-2-benzothiazolinone hydrazone (MBTH) to yield a highly colored quinonediimine dye. The sensing system revealed prominent colorimetric signaling behavior towards Hg2+ and Cu2+ ions. Especially, discriminative signaling for cross-interfering Hg2+ and Cu2+ in the presence of their counterpart metal ions was accomplished using citrate and iodide, respectively, as corresponding masking agents. In addition, practical application to the determination of Hg2+ and Cu2+ in simulated semiconductor wastewater was achieved using a readily available office scanner as data capturing device, which is convenient for field application. (C) 2017 Elsevier B.V. All rights reserved.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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