by Riko Seibo
Tokyo, Japan (SPX) Dec 03, 2025
Researchers have developed micro and nanoscale reconfigurable robots that seize and launch carbon dioxide in confined life assist programs akin to crewed spacecraft, submarines, and sealed shelters. The staff led by Prof. Hui He at Guangxi College reviews that these micro nano reconfigurable robots, or MNRM, use daylight as an vitality supply whereas shifting via the system to keep away from native overheating. In assessments, the robots captured 6.19 mmol of CO2 per gram of sorbent and launched the gasoline once more at a regeneration temperature of solely 55 levels Celsius. In a sealed mouse chamber experiment, use of the robots prolonged animal survival time by 54.61 p.c, indicating their potential to handle carbon ranges in excessive environments.
The MNRM design combines a number of purposeful elements: CO2 binding molecular teams, a temperature responsive molecular change, a photo voltaic photothermal conversion layer, and magnetically pushed movement parts. The CO2 binding moieties type carbamic acid and ammonium bicarbonate when uncovered to carbon dioxide. A molecular change primarily based on Pluronic F127 cross linked with cellulose nanofibers adjustments configuration within the 45 to 55 diploma Celsius vary, which alters the native electrostatic setting round amino teams on the sorbent. This modification weakens the nucleophilic assault functionality of the amino teams towards adsorbed intermediates, suppressing aspect reactions that might type urea constructions which are tough to regenerate.
By limiting urea formation, the nano reconfiguration lowers the vitality barrier for CO2 desorption and permits regeneration at 55 levels Celsius, a minimum of 25 levels decrease than different amino primarily based sorbents reported up to now. The decrease temperature interprets to an estimated one third discount in thermal vitality required for regeneration. The robots obtain this whereas working below photo voltaic irradiation as little as 0.7 solar, or about 700 watts per sq. meter, which helps use in useful resource constrained habitats.
Magnetic Fe3O4 nanoparticles embedded within the robots present distant, non contact management of their movement and orientation. Below an utilized magnetic subject, MNRM particles transfer collectively in a faculty of fish like sample, which distributes them via the fluid and helps uniform gentle publicity and warmth distribution. A graphene oxide layer acts as a warmth bridge, spreading photothermal vitality via the three dimensional framework and serving to to forestall sizzling spots that would injury the sorbent or surrounding elements.
In efficiency assessments, the robots maintained 94 p.c of their CO2 seize capability after ten hydrothermal regeneration cycles at 55 levels Celsius and 91.6 p.c capability after ten cycles below 0.7 solar illumination. The supplies additionally confirmed antimicrobial results, inhibiting greater than 98 p.c of Escherichia coli, Staphylococcus aureus, and Aspergillus flavus progress, which is related for long run storage and operation in life assist programs. Throughout life assist simulations, the robots stored CO2 concentrations within the check chamber beneath 2 p.c and preserved mouse lung tissue at grade 1, indicating restricted injury. The analysis staff is now engaged on integrating the MNRM supplies into modular cartridge codecs that would match into extravehicular exercise backpacks and compact life assist loops for small submarines or emergency shelters.
Analysis Report:Micro/Nano-Reconfigurable Robots for Clever Carbon Administration in Confined-House Life-Help Techniques
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