Publication detail

Six-Degree-of-Freedom Steerable Visible-Light-Driven Microsubmarines Using Water as a Fuel: Application for Explosives Decontamination

YING, Y. PLUTNAR, J. PUMERA, M.

Original Title

Six-Degree-of-Freedom Steerable Visible-Light-Driven Microsubmarines Using Water as a Fuel: Application for Explosives Decontamination

Type

journal article in Web of Science

Language

English

Original Abstract

Micro/nanomotors are capable of a wide variety of tasks related, i.e., to biomedical or environmental applications. Light-driven semiconductor-based micromotors are especially appealing, as they can split surrounding water via light irradiation, and therefore, they can move infinitely. However, their motion is typically limited to in-plane motion with four degrees of freedom (4DoF) or even pseudo-1D motion with 2DoF. Herein, magnetically steerable tubular TiO2/Fe3O4/CdS micromotors, termed microsubmarines, with 6DoF motion, based on a fuel-free design where surrounding water acts as fuel upon visible light irradiation, are presented, with an average velocity of 7.9 mu m s(-1). Besides, the generation of radicals via such water splitting aids the photocatalytic chemicals degradation with the potential to use solar radiation. A light-induced self-electrophoretic mechanism is responsible for the self-propulsion and can be used to predict the motion direction based on the structure and composition. Finally, the TiO2/Fe3O4/CdS microsubmarines are tested in a proof-of-concept application of high-energy explosive, e.g., picric acid, photocatalytic degradation, with the best performance owing to the versatility of 6DoF motion, the surface coating with amorphous TiO2 layer, and UV light. The results can help optimize light-active micromotor design for potential national security and environmental application, hydrogen evolution, and target cargo delivery.

Keywords

explosive decontamination; micromotor; six degrees of freedom; visible‐ light‐ driven; water fuel

Authors

YING, Y.; PLUTNAR, J.; PUMERA, M.

Released

1. 6. 2021

Publisher

WILEY-VCH

Location

WEINHEIM

ISBN

1613-6810

Periodical

Small

Year of study

17

Number

23

State

Federal Republic of Germany

Pages from

1

Pages to

10

Pages count

10

URL

https://onlinelibrary.wiley.com/doi/10.1002/smll.202100294

Full text in the Digital Library

http://hdl.handle.net/11012/203020

BibTex

@article{BUT172326,
  author="Yulong {Ying} and Jan {Plutnar} and Martin {Pumera}",
  title="Six-Degree-of-Freedom Steerable Visible-Light-Driven Microsubmarines Using Water as a Fuel: Application for Explosives Decontamination",
  journal="Small",
  year="2021",
  volume="17",
  number="23",
  pages="1--10",
  doi="10.1002/smll.202100294",
  issn="1613-6810",
  url="https://onlinelibrary.wiley.com/doi/10.1002/smll.202100294"
}