摘要
为了开发活性高、易回收的光催化剂,采用多步热解法制备了基于泡沫铜的多孔碳均匀负载Cu_(3)P纳米颗粒。在泡沫铜(FC)基底原位生长铜基金属-有机框架晶态材料(Cu-MOF),通过热解处理使得泡沫铜表面覆盖了均匀负载于碳材料的Cu_(2)O/Cu纳米颗粒(Cu_(2)O/Cu@NPC@FC-400)。对该材料进行磷化处理得到目标光催化剂Cu_(3)P@NPC@FC-400。利用X射线粉末衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫散射光谱(UV-Vis DRS)、X射线光电子能谱(XPS)和扫描电子显微镜(SEM)等表征材料的组成和形貌。以罗丹明B(Rh B)溶液作为模拟废水,探究其光催化性能及机理。结果发现,Cu_(3)P@NPC@FC-400材料对罗丹明B染料具有良好的光催化性能,在3 h内染料去除率可达94%。该材料便于回收,循环利用10次后,光催化活性保持不变。此外,该材料对于含有7种染料的复杂体系也具有优异的光降解性能。该催化剂具有稳定性高、回收简便的优势,可用于处理含有多种染料的废水。
To develop the photocatalyst with high activity and easy recyclability,uniformly loaded Cu_(3)P NPs in N-doped porous carbon(NPC)supported by foamy copper(FC)was synthesized through a multi-step calcination method.FC was modified by in-situ growth of copper-based metal-organic framework(Cu-MOF)crystals,which was further calcinated to obtain Cu_(2)O/Cu NPs loaded NPC on the surface of FC(Cu_(2)O/Cu@NPC@FC-400).The desired photocatalyst Cu_(3)P@NPC@FC-400 can be achieved after phosphate treatment.The composition and morphology of the obtained material were characterized by X-ray powder diffraction(PXRD),infrared spectroscopy(IR),ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy(SEM).The photocatalytic performance of Cu_(3)P@NPC@FC-400 was studied in the simulated dye wastewater of Rhodamine B(Rh B),and the degradation mechanism was explored as well.It is found that the catalyst exhibits good photocatalytic activity for Rh B with a high dye removal up to 94% within 3 h.The photocatalyst is convenient for recovery,and its activity remains after 10 runs.Moreover,Cu_(3)P@NPC@FC-400 shows excellent photodegradation performance for multi-component wastewater containing 7 dyes.The photocatalyst has the advantage of good stability and easy recovery,which can be used for treating wastewater of various dyes.
作者
刘盛杰
叶永杰
刘银怡
林淑满
谢浩源
刘文婷
许伟钦
LIU Sheng-Jie;YE Yong-Jie;LIU Yin-Yi;LIN Shu-Man;XIE Hao-Yuan;LIU Wen-Ting;XU Wei-Qin(Engineering Technology Development Center of Advanced Materials&Energy Saving and Emission Reduction in Guangdong Colleges and Universities,Department of Chemistry and Materials Science,Guangdong University of Education,Guangzhou 510303,China)
出处
《应用化学》
CAS
CSCD
北大核心
2022年第7期1090-1097,共8页
Chinese Journal of Applied Chemistry
基金
广州市基础研究计划基础与应用基础研究项目(Nos.202102020537,202102080023)
大学生创新创业项目(Nos.S202014278020,202014278004)资助。
关键词
金属-有机框架
泡沫铜
磷化
染料
光催化降解
Metal-organic framework
Foamy copper
Phosphate treatment
Dye
Photocatalytic degradation
