CuS Nanosheet Decorated Bi5O7I Composite for the Enhanced Photocatalytic Reduction Activity of Aqueous Cr(VI)
Source abstract
Abstract
Photocatalytic approach has been extensively explored to remove toxic Cr(VI) in wastewater owing to its high efficient, safe and low cost features. Fabricating semiconductor composite is supposed to be an effective approach to improve the poor photocatalytic activity of single component. In this work, we prepared CuS nanosheets decorated Bi 5 O 7 I composites by a simple hydrothermal method, and characterized and evaluated its photoatalytic reduction activity of Cr(VI) under the visible-light irradiation. Compared to pure Bi 5 O 7 I microrods and CuS nanoparticles, the as-prepared CuS/Bi 5 O 7 I composites exhibits more efficient photocatalytic reduction of aqueous Cr(VI). The reaction rate constant of 15wt% CuS/Bi 5 O 7 I catalyst was 20 times and 4.3 times of that of pristine Bi 5 O 7 I and CuS, respectively. BET, photoluminescence and EIS spectra measurement demonstrate that the improved photocatalytic activity may be attributed to their higher surface areas, broader light absorption region, improved separation, and transfer efficiency of photo-induced electron-hole pairs. Moreover, a possible photocatalytic mechanism of CuS/Bi 5 O 7 I catalyst is also proposed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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