Rationally designed hierarchical hollow CuS/CdIn 2 S 4 heterostructure nanoboxes for boosted photoreduction of CO 2
Source abstract
Abstract
A novel double-shelled CuS/CdIn2S4 photocatalyst was rationally designed using CdIn2S4 sheets in situ grown upon the exterior of hollow CuS nanocubes. The unique hierarchical hollow structure of CuS/CdIn2S4 provides numerous active sites and reduces carrier diffusion length. Surface sulfur vacancies mitigate the detachment of the intermediate, which is favorable for a multi-electron reaction path such as that in the production of CH4. Meanwhile, a suitable band-structure alignment between p-type CuS and n-type CdIn2S4 leads to the formation of a type-II heterostructure, thus resulting in effective light-harvesting and spatial separation of electron-hole pairs for CO2 photoreduction. The CuS/CdIn2S4 heterostructure exhibits significantly enhanced performance with a boosted CO yield of 40.73 μmol g-1 h-1 as well as a noticeably improved CH4 selectivity (36.5%, 23.41 μmol g-1 h-1). This work introduces innovative concepts in designing photocatalytic systems with unique morphologies and rational band structures, promising advancements in CO2 photoreduction at reduced costs.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, School of Physics, Jiangsu Key Laboratory of Nanotechnology, Eco-materials and Renewable Energy Research Center (ERERC), National Laboratory of Solid-State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
School of Chemical and Environmental Engineering, School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen 518172, P. R. China
Funding
National Natural Science Foundation of China · Guangdong Provincial Department of Science and Technology · Jiangsu Provincial Department of Science and Technology · Chinese University of Hong Kong, Shenzhen
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