UV to IR Continuous Photocatalytic Gas‐Phase CO2 Hydrogenation Over Ni‐Doped Molybdenum Oxysulfide: An Experimental and Mechanistic Study
Year: 2025
Type: article
Abstract: ABSTRACT The reduction of CO2 toward CO and CH4 over Ni‐loaded MoS2‐like layered nanomaterials is investigated. The mild hydrothermal synthesis induced the formation of a molybdenum oxysulfide (MoOxSy) phase, enriched with sulfur defects and multiple Mo oxidation states that favor the insertion of Ni2+ cations via photo‐assisted precipitation. The photocatalytic tests under LED irradiation at different wavelengths from 365 to 940 nm at 250°C rendered 1% CO2 conversion and continuous CO production up to 0.6 mmol/(gcat h). The incorporation of Ni into the MoOxSy structure boosted the continuous production of CO up to 5.1 mmol/(gcat h) with a CO2 conversion of 3.5%. In situ spectroscopic techniques and DFT simulations showed the O‐incorporated MoS2 structure, in addition to Ni clusters as a supported metal catalyst. The mechanistic study of the CO2 reduction reaction over the catalysts revealed that the reverse water–gas shift reaction is favored due to the preferential formation of carboxylic species.
Source: Carbon Energy
DOI: 10.1002/cey2.685
Authors: Arturo Sanz‐Marco, Javier Navarro‐Ruiz, Jose L. Hueso, Iann C. Gerber, Victor Sebastian, Susanne Mossin, David Nielsen, Francisco Balas, Jesus Santamaria
Institutions: Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine, Instituto de Nanociencia y Materiales de Aragón, Centre National de la Recherche Scientifique, Institut National des Sciences Appliquées de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets, Université de Toulouse, Instituto de Investigación Sanitaria Aragón, Technical University of Denmark
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,200
OpenAlex ID: W4408333161