Hydrothermal synthesis of CdS/CoWO 4 heterojunctions with enhanced visible light properties toward organic pollutants degradation
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Abstract
Abstract Effective solar energy harvesting and charge carrier separation are two key factors of the photocatalysis system. In this work, the heterojunction photocatalyst of CdS/CoWO 4 was fabricated by a facile hydrothermal method. Compared with the pristine CdS and CoWO 4 , the CdS/CoWO 4 heterojunction photocatalyst showed enhanced photocatalytic activity for the methylene blue (MB) degradation under visible light irradiation. Particularly, the sample with molar ratio of CdS:CoWO 4 (sample C2) controlled at 3:5 showed the highest MB degradation ratio (83%) in 1 h among all samples, which is about 3 times over the pure CdS and 8 times over pure CoWO 4 , respectively. The greatly enhanced photocatalytic activity (3–8 times) of CdS/CoWO 4 is due to the efficient separation of electron-hole pairs by the heterojunction structure and strong visible light absorption of CdS. This work provides a new insight into the application of tungstate-based heterojunction photocatalysts in environmental remediation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Covalent Organic Framework Applications
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