Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 14, Pages 4789-4793Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201504912
Keywords
azo-dye degradation; citric acid; environmental remediation; iron; nanomotors
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Funding
- Ministry of Education, Singapore [99/13]
- Ministry of Education, Youth and Sports of the Czech Republic [LO1305]
- Technology Agency of the Czech Republic Competence Centres [TE01020218]
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Despite demonstrating potential for environmental remediation and biomedical applications, the practical environmental applications of autonomous self-propelled micro-/nanorobots have been limited by the inability to fabricate these devices in large (kilograms/tons) quantities. In view of the demand for large-scale environmental remediation by micro-/nanomotors, which are easily synthesized and powered by nontoxic fuel, we have developed bubble-propelled Fe-0 Janus nanomotors by a facile thermally induced solid-state procedure and investigated their potential as decontamination agents of pollutants. These Fe-0 Janus nanomotors, stabilized by an ultrathin iron oxide shell, were fuelled by their decomposition in citric acid, leading to the asymmetric bubble propulsion. The degradation of azo-dyes was dramatically increased in the presence of moving self-propelled Fe-0 nanomotors, which acted as reducing agents. Such enhanced pollutant decomposition triggered by biocompatible Fe-0 (nanoscale zero-valent iron motors), which can be handled in the air and fabricated in ton quantities for low cost, will revolutionize the way that environmental remediation is carried out.
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