Preparation of CdS@CeO2 core/shell composite for photocatalytic reduction of CO2 under visible-light irradiation
Source abstract
Abstract
Abstract Present work demonstrates fabrication of CdS@CeO 2 core/shell composite and its application in the photocatalytic reduction of CO 2 under visible-light irradiation (λ ≥ 420 nm). CdS@CeO 2 composite has been successfully prepared by two-step chemical method, while CeO 2 and CdS have been synthesized by one-step hydrothermal method. X-ray diffraction analysis confirms the formation of fluorite cubic structure of CeO 2 and cubic phase of CdS. High resolution transmission electron microscopy and scanning electron microscopy reveal the microsphere morphology of CdS, while CeO 2 (shell) is in the form of spherical particles that surround the CdS (core) in case of the composite. X-ray photoelectron spectroscopy has been used to confirm the composition, oxidation state of the elements and valance band of the obtained materials. The CdS@CeO 2 core/shell composite and CdS can convert CO 2 into methane and methanol under visible-light irradiation. The CdS@CeO 2 composite shows higher yield for both methane and methanol than CdS due to low recombination rate of photogenerated electron/hole pairs, as well as a larger BET specific surface area. Moreover, the CdS@CeO 2 core/shell composite also shows improved stability upon photocatalysis.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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