| CdS@g-C3N4复合核壳纳米微粒的制备与光催化性能 |
| Preparation and Photocatalytic Performance of CdS@g-C3N4 Core-Shell Composite Nanoparticles |
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| 摘要: 采用水热法，在乙二胺和EDTA-2Na作用下，成功制备了CdS@g-C3N4复合核壳纳米微粒，并探讨了其生长机理。结果显示：CdS@g-C3N4复合核壳纳米微粒的比表面积是纯CdS纳米颗粒的14.0倍，具有良好的光催化活性和光稳定性。当反应条件为180℃、4 h、CdS/g-C3N4质量比1.9：1时，CdS@g-C3N4的可见光催化性能最好，300 W氙灯光照2 h，RhB的降解率达95.2%，明显高于纯CdS。重复使用3次后，CdS@g-C3N4形貌、结构及光催化性能无明显变化。 |
| 关键词: CdS g-C3N4 纳米复合材料 光催化 罗丹明B |
| 基金项目: 国家自然科学基金（No.21261003）资助项目。 |
| Abstract: The CdS@g-C3N4 core-shell composite nanoparticles were successfully prepared by a hydrothermal method with the addition of ethylenediamine and EDTA-2Na. The nucleation and growth mechanism of CdS@g-C3N4 was also discussed. The specific surface area of CdS@g-C3N4 core-shell composite nanoparticles was 14 times larger than that of the pure CdS nanoparticles. CdS@g-C3N4, which was prepared under the reaction conditions of 180℃, 4 h and 1.9:1 (the mass ratio of CdS to g-C3N4), exhibited the best catalytic performance. The degradation efficiency of RhB with CdS@g-C3N4 composite reached 95.2% after 2 h of irradiation under 300 W xenon, which was significantly higher than that over pure CdS. After three cycles, CdS@g-C3N4 showed no obvious changes in the morphology, structure and photocatalytic performance. |
| Keywords: CdS g-C3N4 nanohybrids photocatalytic activity rhodamine B |
| 投稿时间：2019-12-06 修订日期：2020-02-17 |
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| 钟秦粤,刘瑶,刘新梅,张文康,王海波.CdS@g-C3N4复合核壳纳米微粒的制备与光催化性能[J].无机化学学报,2020,36(5):864-874. |
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