Metal-Free Visible-Light Photoactivated C 3 N 4 Bubble-Propelled Tubular Micromotors with Inherent Fluorescence and On/Off Capabilities

Katherine Villa, C. Lorena Manzanares Palenzuela, Zdeněk Sofer, Stanislava Matějková, Martin Pumera

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Photoactivated micromachines are at the forefront of the micro- and nanomotors field, as light is the main power source of many biological systems. Currently, this rapidly developing field is based on metal-containing segments, typically TiO 2 and precious metals. Herein, we present metal-free tubular micromotors solely based on graphitic carbon nitride, as highly scalable and low-cost micromachines that can be actuated by turning on/off the light source. These micromotors are able to move by a photocatalytic-induced bubble-propelled mechanism under visible light irradiation, without any metal-containing part or biochemical molecule on their structure. Furthermore, they exhibit interesting properties, such as a translucent tubular structure that allows the optical visualization of the O 2 bubble formation and migration inside the microtubes, as well as inherent fluorescence and adsorptive capability. Such properties were exploited for the removal of a heavy metal from contaminated water with the concomitant optical monitoring of its adsorption by fluorescence quenching. This multifunctional approach contributes to the development of metal-free bubble-propelled tubular micromotors actuated under visible light irradiation for environmental applications.

Original languageEnglish
Pages (from-to)12482-12491
Number of pages10
JournalACS Nano
Volume12
Issue number12
DOIs
Publication statusPublished - 2018 Dec 26

Fingerprint

micromotors
Micromotors
bubbles
Metals
Fluorescence
fluorescence
metals
Irradiation
Bubble formation
irradiation
carbon nitrides
Carbon nitride
Biological systems
heavy metals
Precious metals
Heavy Metals
noble metals
Heavy metals
Light sources
Quenching

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Villa, Katherine ; Manzanares Palenzuela, C. Lorena ; Sofer, Zdeněk ; Matějková, Stanislava ; Pumera, Martin. / Metal-Free Visible-Light Photoactivated C 3 N 4 Bubble-Propelled Tubular Micromotors with Inherent Fluorescence and On/Off Capabilities In: ACS Nano. 2018 ; Vol. 12, No. 12. pp. 12482-12491.
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Metal-Free Visible-Light Photoactivated C 3 N 4 Bubble-Propelled Tubular Micromotors with Inherent Fluorescence and On/Off Capabilities . / Villa, Katherine; Manzanares Palenzuela, C. Lorena; Sofer, Zdeněk; Matějková, Stanislava; Pumera, Martin.

In: ACS Nano, Vol. 12, No. 12, 26.12.2018, p. 12482-12491.

Research output: Contribution to journalArticle

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