Breaking Polymer Chains with Self-Propelled Light-Controlled Navigable Hematite Microrobots
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F21%3A43919804" target="_blank" >RIV/62156489:43210/21:43919804 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/21:PU141620 RIV/00216224:14740/21:00124434
Result on the web
<a href="https://doi.org/10.1002/adfm.202101510" target="_blank" >https://doi.org/10.1002/adfm.202101510</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.202101510" target="_blank" >10.1002/adfm.202101510</a>
Alternative languages
Result language
angličtina
Original language name
Breaking Polymer Chains with Self-Propelled Light-Controlled Navigable Hematite Microrobots
Original language description
The increasing use of polymers has led to an uncontrollable accumulation of polymer waste in the environment, evidencing the urgent need for effective and definitive strategies to degrade them. Here, self-propelled light-powered magnetic field-navigable hematite/metal Janus microrobots that can actively move, capture, and degrade polymers are presented. Janus microrobots are fabricated by asymmetrically depositing different metals on hematite microspheres prepared by low-cost and large-scale chemical synthesis. All microrobots exhibit fuel-free motion capability, with light-controlled on/off switching of motion and magnetic field-controlled directionality. Higher speeds are observed for bimetallic coatings with respect to single metals. This is due to their larger mixed potential difference with hematite as indicated by Tafel measurements. As a model for polymers, the total degradation of high molecular weight polyethylene glycol is demonstrated by matrix-assisted laser desorption/ionization mass spectrometry. This result is attributed to the active motion of microrobots, enhanced electrostatic capture of polymer chains, improved charge separation at the hematite/metal interface, and catalyzed photo-Fenton reaction. This work opens the route toward the degradation of polymers and plastics in water using light.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Functional Materials
ISSN
1616-301X
e-ISSN
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Volume of the periodical
31
Issue of the periodical within the volume
28
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
2101510
UT code for WoS article
000645561700001
EID of the result in the Scopus database
2-s2.0-85105169478