Autonomous self-propelled MnO2 micromotors for hormones removal and degradation

Jan Tesař, Martina Ussia, Osamah Alduhaish, Martin Pumera

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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 β-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 β-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.

Original languageEnglish
Article number101312
JournalApplied Materials Today
Publication statusPublished - 2022 Mar

Bibliographical note

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© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


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