Journal
APPLIED MATERIALS TODAY
Volume 26, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apmt.2021.101312
Keywords
Micromotors; MnO2; Hormone; beta-Estradiol; H2O2; Adsorption; Photodegradation; Pollutant removal; UV-light
Categories
Funding
- Distinguished Scientist Fellowship Program (DSFP) of King Saud University, Riyadh, Saudi Arabia
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This study demonstrates the use of MnO2 microparticles as self-propelled micromotors for the removal of β-estradiol hormone. The micromotors show higher degradation efficiency compared to static MnO2 microparticles. This offers an effective alternative for hormone removal in water purification.
Nowadays, endocrine-disrupting chemicals are recognized as among the most dangerous compounds for marine life and human health as well. Here, we present the use of commercially available MnO2 microparticles as self-propelled micromotors for on-the-fly photocatalytic degradation and removal of the ,beta-estradiol hormone due to the micromotors' self-propulsion ability and photoactivity. Effective removal of the contaminant is demonstrated without any external stirring showing a degradation efficiency of 72%, significantly higher than static MnO2 microparticles (27%). In particular, adsorption and photocatalytic processes were here exploited separately to evaluate the specific contribution of the motion toward the overall ,beta-estradiol removal effect from the water. This study presents an effective alternative to conventional water purification in removing hormones and a starting point for future improvements on adsorption and photocatalytic abilities of micro-and nanomotors toward emerging organic pollutants in water.(c) 2021 Elsevier Ltd. All rights reserved.
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