Green hydrogen evolution from semi-dissolved water adopting narrow band gap WSe2/Cu3P (WP) composite photocatalyst
Source abstract
Abstract
Herein, Cu3P was used as a co-catalyst to improve the separation efficiency of photogenerated carriers in WSe2 photocatalysts. The metallic nature of Cu3P and its noble metal-like properties make it an affordable and efficient co-catalyst. The experimental results revealed that the photocatalytic activity of the WSe2/Cu3P (WP) sample was significantly higher under visible light with an average hydrogen evolution rate (HER) of 616.50 μmol h−1 g−1 and a quantum yield of 23.75%. In contrast, the average HER of the pure WSe2 sample was only 298.46 μmol h−1 g−1. The preparation parameters were optimized by a single-factor test. The optimal preparation parameters were as follows. The loading of Cu3P was 8%, and the calcination time and temperature were 2.0 h and 300 °C, respectively. An innovative exploration of the photocatalytic memory effect of WP photocatalyst was carried out. The analysis of the experimental results displayed that the HER of the WP photocatalyst under dark conditions reached 418.50 μmol h−1 g−1 after 5.0 h post-illumination.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Chalcogenide Semiconductor Thin Films · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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