期刊
ANALYTICA CHIMICA ACTA
卷 1228, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.aca.2022.340309
关键词
Electrochemical detection; Cadmium; Star -shaped ZIF-8; Square -wave anodic stripping voltammetry
资金
- National Key R&D Program of China [2019YFC1804400]
- Special Project for Social Develop-ment of Yunnan Province [202103AC100001]
- Major Programs of Yunnan Province Tobacco Monopoly Bureau [2021530000241021]
- Double First Class University Plan [2017-04862]
- Vetenskapsrdet [2021-04629, 45419-1]
- Energimyndigheten
- SSF-Agenda 2030-PUSH
- [C176220100042]
In this study, cetyltrimethylammonium bromide and zeolitic imidazolate framework-8 (ZIF-8) were assembled via chemical co-precipitation, and high-quality carbon-based metal-free nanomaterials were synthesized using heat treatment. The internal and morphological characteristics of hexagonal Star ZIF-8 were investigated. An electrochemical sensor with a good response to Cd(II) was prepared using Star ZIF-8 nanomaterial-modified electrodes. The sensitivity of the sensor was increased by five orders of magnitude.
In this study, cetyltrimethylammonium bromide and zeolitic imidazolate framework-8 (ZIF-8) were first assembled via the chemical co-precipitation, and high-quality carbon-based metal-free nanomaterials were synthesized using a heat-treatment process. The internal and morphological characteristics of hexagonal Star ZIF-8 were investigated using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The electrochemical sensor with a good response to Cd(II) was prepared via square-wave anodic stripping vol-tammetry (SWASV) with Star ZIF-8 nanomaterial-modified glassy carbon electrodes. The main parameters were adjusted to obtain the optimal stripping response and a wide linear range. Concurrently, under the calculation of SWASV, the sensitivity of Star ZIF-8-Nafion/GCE to Cd(II) was increased by five orders of magnitude (0.5-230
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