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Reconstruction of Soil Components into Multifunctional Freestanding Membranes.

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 NH₃ gas under atmospheric conditions.

SUBMITTER: Deka J

PROVIDER: S-EPMC6648056 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Reconstruction of Soil Components into Multifunctional Freestanding Membranes.

Deka Jumi J Saha Kundan K Konch Tukhar Jyoti TJ Gogoi Raj Kumar RK Saikia Subhasmita S Saikia Partha Pratim PP Dutta Gitish K GK Raidongia Kalyan K

ACS omega 20190115 1

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 heatin ...[more]

PMID: 31459400

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