激光微织构泡沫铜的氧化铜纳米线制备及其光催化性能研究  

Fabrication and photocalytic performance of CuO nanowires on copper foam based on laser texturing

作　　者：颜黄苹 陈子露 何鑫 张可欣 沈思鸿 王志刚[2,3] 周锐 YAN HuangPing;CHEN ZiLu;HE Xin;ZHANG KeXin;SHEN SiHong;WANG ZhiGang;ZHOU Rui(School of Aerospace Engineering,Xiamen University,Xiamen 361000,China;Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]厦门大学航空航天学院,厦门361000 [2]武汉科技大学冶金装备及其控制教育部重点实验室,武汉430081 [3]武汉科技大学机械传动与制造工程湖北省重点实验室,武汉430081

出　　处：《中国科学：物理学、力学、天文学》2020年第3期95-103,共9页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：武汉科技大学机械传动与制造工程湖北省重点实验室开放基金(编号:2017A04);福建省激光精密加工工程技术研究中心开放课题(编号:2018JKA006)资助项目

摘　　要：本文采用激光织构与热氧化法相结合,以泡沫铜为基底制备具有微阵列结构的氧化铜纳米线(CuO NWs).采用扫描电子显微镜(SEM)、X射线能谱仪(EDS)和X射线衍射仪(XRD)对样品表面形貌及成分进行表征,讨论激光织构表面微结构对氧化铜纳米线生长的促进作用,设计不同的加工参数研究激光织构对氧化铜纳米线生长的影响,并通过光催化降解甲基橙溶液考察了CuO NWs的光催化性能.实验结果表明,经过激光织构的泡沫铜能增大纳米线的生长面积,提高样品表面氧元素的含量,有效地促进生长过程中氧化铜纳米线长度和密度的提高.不同的激光参数对纳米线的生长产生一定影响,具有良好的调控作用.CuO NWs光催化降解甲基橙的降解率可达97%,循环测试5次后的降解率仍可保持在96%,可见其稳定性良好,而且其片状结构更易回收,重复利用率高,具有优异的光催化性能.Nanostructure CuO has attracted considerable research attention in the field of photocatalysis with excellent physical and chemical properties.However,most CuO photocatalytic nanomaterials prepared by chemical methods have problems such as low recycling rate and secondary pollution due to their morphological characteristics.In this paper,CuO nanowires(CuO NWs)grown based on copper foam were successfully prepared by laser texturing combined with subsequent thermal oxidation and used as photocatalyst for photocatalytic degradation of methyl orange(MO)solution.The effect of laser texturing parameters on the growth of copper oxide nanowires was investigated,such as scan spacing and scan times.After optimization,the appropriate laser processing parameters are chosen to form the micro-patterned grids on the copper foam.Subsequently,CuO NWs are synthesized by thermal oxidation.The structure morphology and chemical composition of samples were characterized by scanning electron microscopy(SEM),energy dispersive spectrometer(EDS)and X-ray diffraction(XRD).The photocatalytic performance of CuO nanowires based on copper foam was evaluated by degradation of methyl orange(MO)solution under ultraviolet light irradiation.The experimental results show that laser texturing of copper foam can not only increase the growth area of nanowires but also improve the content of thermally activated oxygen on the substrate.Therefore,the growth of CuO NWs is effectively promoted in terms of length and density.The photocatalytic degradation rate of MO solution by CuO NWs is up to 97% after 120 min.After five cycles’measurement,the degradation rate can still remain 96%.It demonstrates the good-performance stability and high recyclability of CuO NWs based on copper foam as photocatalysts.This study provides a feasible approach to synthesize CuO NWs on the copper foam and effectively extend the potential application of CuO nanomaterials in the industrial wastewater treatment.

关 键 词：泡沫铜 氧化铜纳米线 激光织构 光催化降解 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]