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A simple sensing of hazardous photo-induced superoxide anion radicals using a molecular probe in ZnO-Nanoparticles aqueous medium

Title
A simple sensing of hazardous photo-induced superoxide anion radicals using a molecular probe in ZnO-Nanoparticles aqueous medium
Author
김기현
Keywords
Photocatalysis; XTT tetrazolium salt; ZnO-NPs; Molecular probe; Reactive oxygen species; Superoxide anion radicals
Issue Date
2019-09
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
Environmental Research, v. 176, article no. 108424
Abstract
The generation of reactive oxygen species (ROS) during the photolysis of sunscreens and sun blockers poses consumer safety concerns while necessitating proper identification and quantitation of ROS species. Here, a colorimetric sensing approach has been developed based on a molecular probe (2,3-bis-(2-methoxy-4-nitro-5sulfopheny1)-2-H-tetrazolium-5-carboxanilide (XTT) tetrazolium salt) to quantitatively measure the photo-induced superoxide anion radicals (center dot O-2(center dot)) generated from the photocatalysis of zinc oxide nanoparticles (ZnO-NPs) in aqueous solutions. Note that superoxide anion radicals are assumed to be the main reactive oxygen species (ROS) generated from such photocatalysis. The characterisation of ZnO-NPs before and after irradiation showed average particle sizes of 616.5 and 295.3 nm and zeta-potential values of 0 and -24.4 mV, respectively. It is hoped that this proposed protocol can be further developed to efficiently detect other ROS present in inorganic sun blockers and to optimize the utility of various sunscreen formulations.
URI
https://www.sciencedirect.com/science/article/pii/S0013935119301963?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/153899
ISSN
0013-9351; 1096-0953
DOI
10.1016/j.envres.2019.03.062
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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