Efficient Infrared-Light-Driven CO2 Reduction Over Ultrathin Metallic Ni-doped CoS2 Nanosheets.

Efficient Infrared-Light-Driven CO2 Reduction Over Ultrathin Metallic Ni-doped CoS2 Nanosheets.
Angew Chem Int Ed Engl. 2021 Jan 20;:
Authors: Xu J, Ju Z, Zhang W, Pan Y, Zhu J, Mao J, Zheng X, Fu H, Yuan M, Chen H, Li R
Abstract
Converting CO 2 and H 2 O into carbon-based fuel by IR light is a tough task. Herein, compared with other single-component photocatalysts, the most efficient IR-light-driven CO 2 reduction is achieved by an element-doped ultrathin metallic photocatalyst－Ni-doped CoS 2 nanosheets (Ni-CoS 2 ). The evolution rate of CH 4 over Ni-CoS 2 is up to 101.8 μmol g -1 h -1 . The metallic and ultrathin nature endow Ni-CoS 2 with excellent IR light absorption ability. The PL spectra and Arrhenius plots indicate that Ni atoms could facilitate the separation of photo-generated carriers and the decrease of the activation energy. Moreover, in situ FTIR, DFT calculations, and CH 4 -TPD reveal that the doped Ni atoms in CoS 2 could effectively depress the formation energy of the *COOH, *CHO and desorption energy of CH 4 . This work manifests that element doping in atomic level is a powerful way to control the reaction intermediates, providing possibilities to realize high-efficiency IR-light-driven CO 2 reduction.
PMID: 33470491 [PubMed - as supplied by publisher]

Source: Angewandte Chemie - January 20, 2021 Category: Chemistry Authors: Xu J, Ju Z, Zhang W, Pan Y, Zhu J, Mao J, Zheng X, Fu H, Yuan M, Chen H, Li R Tags: Angew Chem Int Ed Engl Source Type: research