Superselective Hydrogen Separation through a Mixed Conducting Graphene Oxide Membrane.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39480968.
- Also identified by DOI 10.1021/acs.nanolett.4c03094.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
A cost-effective H<sub>2</sub> separation method is required for the purification of gaseous mixtures containing H<sub>2</sub>. Thus, in this study, we investigate the H<sub>2</sub> separation properties of Ce ion-doped partially reduced graphene oxide (prGO) membranes. Pt/C-catalyst-coated, dense, micrometer-thick membranes are fabricated by stacking Ce-prGO nanosheets, followed by thermal annealing. They are permeable to only H<sub>2</sub> at room temperature. H<sub>2</sub> permeation occurs based on mixed conduction; the H<sub>2</sub> initially dissociates into protons and electrons at the feed side. Thereafter, they diffuse into the membrane and recombine to produce H<sub>2</sub> at the permeate side. However, the diffusion of other molecules, such as He and CO<sub>2</sub>, is inhibited, resulting in superselective separation. The developed carbon-based mixed proton/electron conduction (MPEC) membrane can be employed for H<sub>2</sub> capture, deuterium gas production from D<sub>2</sub>O, and organic molecule deuteration.