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具有孪晶结构的红细胞状硫化铜的制备及其光-芬顿催化性能
Synthesis of erythrocyte-like CuS with twin structure and photo-Fenton catalytic performance
【摘要】 采用简单的溶剂热法制备出具有孪晶结构的红细胞状硫化铜材料。研究不同前驱体比例和反应时间对硫化铜产物微观形貌的影响,并对孪晶结构红细胞状硫化铜可能的形成机理进行分析。在可见光照射下孪晶结构红细胞状硫化铜与H2O2组成的类芬顿系统表现出优异的降解性能,光照50 min后,亚甲蓝降解率可达95%。对比孪晶结构红细胞状硫化铜与合成的花球状硫化铜的催化性能,结果表明含有孪晶结构的红细胞状硫化铜对亚甲蓝的降解性能更好,说明孪晶的存在有利于加速光生电子-空穴的分离。
【Abstract】 An erythrocyte-like copper sulfide material with twins was synthesized by a solvothermal method.It was found that the different precursor proportions and reaction times play key roles in the formation of erythrocyte-like CuS.The formation mechanism of twin erythrocyte-like CuS was systematically elaborated.The Fenton-like system composed of CuS and H2O2 showed excellent degradation performance under visible light irradiation,and the degradation rate of methylene blue reached 95% after 50 min under visible light.The catalytic performance of the erythrocyte-like CuS and the synthetic flower ball-like CuS was compared,and the degradation performance of the erythrocyte-like CuS was better,indicating that the twin crystals accelerate the separation of photogenerated electrons-holes.
【Key words】 erythrocyte-like CuS; twin boundary; photo-Fenton; pollutant degradation;
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2023年11期
- 【分类号】O643.36;TQ131.21
- 【下载频次】19