A p-n heterojunction NiS-sensitized TiO2 photocatalytic system for efficient photoreduction of carbon dioxide to methane
Source abstract
Abstract
Abstract Nanoparticles of the p-type semiconductor nickel sulfide are grown on a highly aligned n-type TiO 2 film. Using XRD, XPS, EDS, UV–Vis diffuse reflectance spectroscopy, photoluminescence, photocurrent density, and CO 2 -TPD, the physicochemical characteristics of the p-n heterojunction NiS-sensitized TiO 2 films are investigated. The highest photocurrent is obtained for the optimized 0.10 M NiS-sensitized TiO 2 film, which resulted in eventually decreasing the electron-hole recombination during CO 2 photoreduction. The NiS-sensitized TiO 2 film exhibits superior photocatalytic behavior compared to that of a pure TiO 2 film. A model for investigating the catalytic activity of the NiS-sensitized TiO 2 film for CO 2 photoreduction is proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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