Impact of Cu doping on ZnO nanoparticles phyto-chemically synthesized for improved antibacterial and photocatalytic activities
Impact of Cu doping on ZnO nanoparticles phyto-chemically synthesized for improved antibacterial and photocatalytic activities
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DOI：
10.1007/s11051-020-04996-3
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发表时间：
2020-09
影响因子：
2.5
通讯作者：
I. Okeke;K. Agwu;A. Ubachukwu;M. Maaza;F. Ezema
中科院分区：
文献类型：
--
作者：
I. Okeke;K. Agwu;A. Ubachukwu;M. Maaza;F. Ezema
采用绿色方法合成了Zn 1 −xCuxO纳米粒子（x= 0.0，0.01，0.03和0.05）。采用XRD、SEM和UV-vis光谱分别研究了Cu掺杂对ZnO纳米粒子的结构、形貌和光学性能的影响。XRD分析证实样品具有六方纤锌矿结构。晶粒尺寸、晶格常数、晶胞体积和键长随Cu含量从0增加到5%而增加，而位错密度和微应变则相反。原子堆积率为74.05%，键长为1.990 - 1.996 μ m。SEM照片显示为球形、花瓣状和棒状。样品的能带隙（Eg）从3.38红移到3.27 eV。抗菌结果清楚地表明，ZnO纳米颗粒中的Cu掺杂改善了所选细菌的抑制区直径，并在照射100分钟后表现出更高的降解效率。图形摘要
Green approach was employed to synthesize Zn1 −xCuxO nanoparticles (x= 0.0, 0.01, 0.03, and 0.05). The impact of Cu doping on the structure, morphology, and optical properties of ZnO nanoparticles was evaluated using XRD, SEM, and UV-vis spectroscopy, respectively. The XRD analyses confirmed that the samples have hexagonal wurtzite structure. The crystallite size, lattice constants, volume of unit cell, and bond length of the nanoparticles showed increasing trend as the Cu concentration was increased from 0 to 5% and vice versa for micro-strain and dislocation density. Atomic packing fraction was found to be 74.05% and bond length was between 1.990 and 1.996 Å. SEM image showed spherical, petal, and rod-like shape. Energy band gap (Eg) of samples red shifted from 3.38 to 3.27 eV. The antibacterial results clearly showed that Cu doping in ZnO NPs improved the diameter of inhibition zone across the selected bacteria and exhibited higher degradation efficiency after 100 min of irradiation.Graphical Abstract