Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 96, Issue -, Pages 390-396Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2021.01.043
Keywords
Amine modified ZnO; Photocatalyst; Micellar solutions; Surfactant adsorption; Surface charges
Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20202020800330]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20202020800330] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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ZnO nanoparticles exhibit strong photocatalytic activity in aqueous micellar solutions, and their performance can be significantly enhanced by surface modification. Cationic micelles can improve the photocatalytic activity of ZnO particles, while anionic and nonionic micelles have a detrimental effect on their photocatalytic performance.
Photocatalytic activity of ZnO nanoparticles was investigated in aqueous micellar solutions. Due to the strong aggregation of ZnO nanoparticles in water, the surface of ZnO particles was modified with 3-aminopropyltriethoxysilance (APTES). ZnO nanoparticles were synthesized through sol-gel method and characterized by HR-TEM, XRD and UV-vis spectroscopy. Then, the surface modification with APTES was confirmed by XPS and FT-IR. Photocatalytic activity of ZnO nanoparticles was evaluated by photo-degradation of methylene blue in micellar solutions. The results showed that photocatalytic activity of ZnO particles was enhanced remarkably in cationic micellar solution, but anionic and nonionic micelles deteriorated the photocatalytic performance of ZnO. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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