Journal
SURFACES AND INTERFACES
Volume 25, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.surfin.2021.101302
Keywords
Light-regeneration; 2D Bi2WO6 nanosheets; Electrochemical sensor; Sulfamethoxazole (SMX); Electrode fouling
Categories
Funding
- National Nature Science Foundation of China [61904073, 62004085]
- Program of Introducing Talents of Kunming University [YJL16003, YJL18008]
- Projectsof Science and Technology Plans of Kunming [20191C25318000002189]
- Yunnan Fundamental Research Projects [2019FGF02]
- Thousand Talents Program of Yunnan Province for Young Talents, Spring City Plan-Special Program for Young Talents [ZX20210014]
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Utilizing ultrathin 2D Bi2WO6 nanosheets as electrodes for sulfamethoxazole detection demonstrates efficient and renewable photochemical properties.
Photochemical oxidation is an effectively renewable method for fouled electrode in electrochemical detection of organic pollutant, while the renewable ability is subjected by the surface-bound radicals of electrode. Herein, ultrathin two-dimensional (2D) Bi2WO6 nanosheets are rationally applied to detect sulfamethoxazole (SMX) antibiotic. Ultrathin 2D Bi2WO6 nanosheets electrode shows efficient detection ability and a nice photochemical renewable ability under light illumination. Crystal phase analysis, radical analysis, surface observation and pollutant degradation performance reveal that active radicals are chiefly responsible for the outstanding photochemical regeneration ability of ultrathin 2D Bi2WO6 nanosheets. Our work provides an advanced and stable electrochemical monitoring approach and an efficient, simple and low-cost photochemical oxidation sensor for SMX detection.
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