Construction of CoS/CeO2 heterostructure nanocages with enhanced photocatalytic performance under visible light

B Yu, F Meng, T Zhou, A Fan, Z Zhao… - Journal of the …, 2020 - Wiley Online Library
B Yu, F Meng, T Zhou, A Fan, Z Zhao, M Wasim Khan
Journal of the American Ceramic Society, 2020Wiley Online Library
Exploring non‐noble metal photocatalysts with high activity and stability is always
fascinating. Herein, the hollow CoS nanocages deriven from ZIF‐67 have been reported for
the first time to combine with CeO2 NPs grown in situ for photocatalytic degradation of
stubborn pollutants. The unique CoS nanocages not only provide rich active sites but also
enhance light capture. CeO2 NPs loaded on the surface accelerate the separation of
photocharges and extend the lifetime of photogenerated carriers. The optimized …
Abstract
Exploring non‐noble metal photocatalysts with high activity and stability is always fascinating. Herein, the hollow CoS nanocages deriven from ZIF‐67 have been reported for the first time to combine with CeO2 NPs grown in situ for photocatalytic degradation of stubborn pollutants. The unique CoS nanocages not only provide rich active sites but also enhance light capture. CeO2 NPs loaded on the surface accelerate the separation of photocharges and extend the lifetime of photogenerated carriers. The optimized photocatalysts show outstanding activity and stability for the photodegradation of tetracycline and phenol under visible light, and the corresponding photodegradation efficiency is 96.5% and 90.5% at 60 minutes. The novel multi‐stage nanocage structure simultaneously realizes extended light absorption and improved photocharges transfer efficiency. This work provides an exclusive perspective to design high‐efficiency photocatalysts with hollow structures for environmental restoration.
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