AI Article Synopsis
- Researchers have created multifunctional membranes from common soil components like clay and humic acids, enhancing their strength and durability through cross-linking.
- These membranes feature tiny channels that enable unique fluid behaviors at the nanoscale, while also allowing for increased electrical conductivity when heated.
- The heated soil membranes show high sensitivity to ammonia gas, offering a new way to develop and investigate mixed conducting materials.
Article Abstract
Multifunctional freestanding membranes are prepared by tuning the structure of ubiquitous soil components, viz. clay and humic acids. Cross-linking of exfoliated clay layers with purified humic acids not only conferred mechanical strength but also enhanced chemical robustness of the membranes. The percolated network of molecularly sized channels of the soil membranes exhibits characteristic nanofluidic phenomena. Electrical conductivity is induced to otherwise insulating soil membranes by heating in an inert atmosphere, without affecting their nanofluidic ionic conductivity. The soil membranes also provided a new platform to prepare and study mixed conducting materials. Strips of heated membranes are shown to exhibit excellent sensitivity toward NH gas under atmospheric conditions.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648056 | PMC |
| http://dx.doi.org/10.1021/acsomega.8b03144 | DOI Listing |
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