Layered-Double-Hydroxide Nanosheets as Efficient Visible-Light-Driven Photocatalysts for Dinitrogen Fixation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28960530.
- Also identified by DOI 10.1002/adma.201703828.
- 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
Semiconductor photocatalysis attracts widespread interest in water splitting, CO<sub>2</sub> reduction, and N<sub>2</sub> fixation. N<sub>2</sub> reduction to NH<sub>3</sub> is essential to the chemical industry and to the Earth's nitrogen cycle. Industrially, NH<sub>3</sub> is synthesized by the Haber-Bosch process under extreme conditions (400-500 °C, 200-250 bar), stimulating research into the development of sustainable technologies for NH<sub>3</sub> production. Herein, this study demonstrates that ultrathin layered-double-hydroxide (LDH) photocatalysts, in particular CuCr-LDH nanosheets, possess remarkable photocatalytic activity for the photoreduction of N<sub>2</sub> to NH<sub>3</sub> in water at 25 °C under visible-light irradiation. The excellent activity can be attributed to the severely distorted structure and compressive strain in the LDH nanosheets, which significantly enhances N<sub>2</sub> chemisorption and thereby promotes NH<sub>3</sub> formation.