Journal
MICROCHIMICA ACTA
Volume 185, Issue 4, Pages -Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-018-2768-8
Keywords
Photoluminescence; Nanoparticles; Molybdenum disulfide; Hypochlorous acid; Anion detection; Disinfectant
Categories
Funding
- National Natural Science Foundation of China [21775014, 21505012, 81501837]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2017jcyjAX0368]
- Program for Top-Notch Young Innovative Talents of Chongqing Normal University [02030307-00026]
- Chongqing Research Program on Teaching Reform of Higher Education [153062]
- Chongqing Undergraduate Training Program for Innovation and Entrepreneurship [201710637007]
Ask authors/readers for more resources
A method is described for the fluorometric determination of hypochlorite. It is making use of molybdenum disulfide quantum dots (MoS2 QDs) as a fluorescent probe. The QDs are prepared by hydrothermal reaction of sodium molybdate with glutathione. They possess diameters typically ranging from 1.4 to 3.8 nm, excellent stability in water, and blue photoluminescence (with excitation/emission peaks located at 315/412 nm and a quantum yield of 3.7%). The fluorescence of the QDs is statically quenched by hypochlorite, and the Stern-Volmer plot is linear. Hypochlorite can be detected in the 5-500 mu M concentration range with a 0.5 mu M detection limit. The method has been successfully applied to the determination of hypochlorite in spiked samples of tap water, lake water, and commercial disinfectants.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available