Piran Kidambi, assistant professor of chemical and biomolecular engineering, not too long ago had two papers seem in ACS Utilized Supplies and Interfaces and ACS Nano that respectively deal with a brand new strategy to filter nanoparticles and discover methods to assist decarbonizing transportation.
The paper printed August 29, 2022, in ACS Utilized Supplies and Interfaces is about growing one atom thick filters that take away nanoparticles down to five nm—about 12,000 occasions smaller than human hair—from air streams. Such filters can allow purposes for shielding troopers and first responders from organic threats. The filters would even be much less cumbersome than the gadgets a few of these people at present use.
Kidambi stated the present HEGA (Excessive Effectivity Gasoline Absorption) filters in masks usually utilized by troopers and emergency officers are massive, cumbersome, enable restricted air move and might pressure an individual’s neck throughout extended operation.
“In addition they usually want auxiliary energy to power air via the filter as a result of it is so dense,” stated Kidambi. “We’re creating the thinnest attainable filters—only one atom. This enables higher air move for breathability and sweat-based cooling however nonetheless blocks out particles down to 5 nanometers in measurement, a lot smaller than most viruses or different organic brokers.”
The opposite paper printed October 6, 2022, in ACS Nano explores methods to create ultra-thin membranes—one atom thick—for environment friendly and extra sustainable transportation. Hydrogen is more and more being checked out as a supply of energy as a result of its combustion in a gasoline cell releases solely water into the environment and never carbon dioxide like gasoline powered autos. Scientists consider extreme quantities of carbon dioxide within the environment is the first trigger of worldwide warming and local weather change.
State-of-the-art hydrogen gasoline cell membranes enable some leakage of hydrogen that lowers gasoline cell effectivity. The analysis printed in ACS Nano presents a brand new strategy to handle this concern utilizing the one atom thick materials graphene.
“We found that freezing Angstrom-scale proton selective defects into one atom thick movies of graphene can allow next-generation gasoline cell membranes,” stated Interdisciplinary Materials Science graduate scholar Nicole Moehring, first creator on the paper. “Stacking two such layers nearly eradicated hydrogen leakage in comparison with standard gasoline cell membranes. We consider our know-how gives new options to among the persistent issues on this tech-space.”
Peifu Cheng et al, Nanoporous Atomically Skinny Graphene Filters for Nanoscale Aerosols, ACS Utilized Supplies & Interfaces (2022). DOI: 10.1021/acsami.2c10827
Nicole Ok. Moehring et al, Kinetic Management of Angstrom-Scale Porosity in 2D Lattices for Direct Scalable Synthesis of Atomically Skinny Proton Alternate Membranes, ACS Nano (2022). DOI: 10.1021/acsnano.2c03730
New analysis explores nanotech frontiers to mitigate organic threats and decarbonize transportation (2022, November 9)
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