Journal
CERAMICS INTERNATIONAL
Volume 45, Issue 9, Pages 12449-12454Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.03.178
Keywords
SiC-TiO2/SnO2 nanocomposites; Photocatalytic performance; Visible light; SiC nanocrystals; Pulsed-laser ablation
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Funding
- National Natural Science Foundation of China [51771168, 11774301]
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In this work, silicon carbide nanocrystals (SiC NCs) were prepared via ultrasonic vibration treatment on the electrochemical etched SiC target. TiO2/SnO2 powders were pulsed-laser ablated in deionized water with different duration. Then, the SiC NCs were coupled with the laser modified powders, forming the SiC-TiO2/SnO2 nanocomposites. As-prepared nanocomposites exhibit extended light absorption to the visible range. The abilities for photocatalytic degradation of the heterostructured catalysts were greatly enhanced in comparison with the pristine and the ablated TiO2/SnO2 powders. It was ascribed to the heterojunction structure between SiC NCs and TiO2/SnO2, which reduces the recombination of photogenerated electrons and holes.
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