Journal
ACS APPLIED MATERIALS & INTERFACES
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c09527
Keywords
micro-; nanorobots; transversal rotating magnetic field; decontamination; oil spill; emulsion; indigo
Funding
- project Advanced Functional Nanorobots (EFRR) [CZ.02.1.01/0.0/0.0/15 _003/0000444]
- CzechNanoLab project - MEYS CR [LM2018110]
- CEITEC Nano Research Infrastructure
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In this study, hydrophobic magnetic hydrogen-bonded organic pigment-based microrobots were used for oil removal. The microrobots could be wirelessly navigated and controlled in a magnetic field. They exhibited swarm-like behavior and successfully navigated oil droplets.
Removal of oil is very important for environmental remediation when considering its negative impacts on living organisms and on the quality of water, groundwater, and soil. Here, we report on the application of hydrophobic magnetic hydrogen-bonded organic pigment-based microrobots for oil removal. The microrobots can be wirelessly navigated in a transversal rotating magnetic field, with full control of their trajectory. In addition, the velocity of magnetic microrobots can be easily controlled by changing the frequency. Due to their hydrophobic nature, the microrobots were able to enter droplets of spilled oil. Consequently, the navigation of the oil droplets was enabled in a magnetic field. Moreover, the microrobots captured within the oil droplets exhibited a swarm-like behavior; they collectively navigated toward further oil droplets that were collected and transferred to a desired location. This concept does not require the use of any additional fuel or surfactants, which is crucial for large-scale oil pollution treatment. Therefore, we believe that these microrobot swarms have great potential in remediating aqueous environments.
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