摘要
为制备具有可见光活性和较高光催化效率的纳米光催化材料,本研究以CuO纳米粉体和Na2S·9H2O为原料,以纳米CuO为自模板,通过水热一锅法合成Cu_(2)O-Cu_(2)S纳米复合物.光催化降解甲基橙的实验结果表明,相较于纯Cu_(2)O样品,Cu_(2)O-Cu_(2)S纳米复合物表现出更优异的可见光光催化活性,且其光催化活性随复合物中Cu_(2)S含量的增加而增加.当Cu_(2)S含量最佳时,复合物的活性最优,在光照2 h内,其对甲基橙(20 mg·L^(-1))的降解率可达94%,且循环使用5次后,光催化活性基本保持不变.
In order to prepare nano photocatalytic materials with visible light activity and high photocatalytic efficiency,the Cu_(2)O-Cu_(2)S nanocomposites were synthesized by one-pot hydrothermal method using CuO na⁃no powder and Na2S·9H2O as raw materials,nano CuO as self template in this study.The results of photocata⁃lytic degradation of methyl orange showed that the Cu_(2)O-Cu_(2)S nanocomposites had better visible-light photo⁃catalytic activities than the pure Cu_(2)O samples,and the photocatalytic activities increased with the increase of Cu_(2)S content in the nanocomposites.When the content of Cu_(2)S reached the optimal value,the photocatalyt⁃ic activity of the nanocomposite was the best.The degradation rate of methyl orange(20 mg·L^(-1))could reach 94%within 2 hours of illumination,and the photocatalytic activity remained unchanged after 5 cycles.
作者
成蕊
王英男
姜丹
李龙凤
刘明珠
张茂林
CHENG Rui;WANG Yingnan;JIANG Dan;LI Longfeng;LIU Mingzhu;ZHANG Maolin(School of Chemistry and Materials Science,Huaibei Normal University,235000,Huaibei,Anhui,China;Key Laboratory of Green and Precise Synthetic Chemistry and Application,Ministry of Education,235000,Huaibei,Anhui,China)
出处
《淮北师范大学学报（自然科学版）》
CAS
2021年第3期41-46,共6页
Journal of Huaibei Normal University：Natural Sciences
基金
绿色和精准合成化学及应用教育部重点实验室开放课题。
