Effect of reduced graphene oxide on the structural and optical properties of ZnO nanoparticles

被引:13
作者
Abdel-Salam, Ahmed I. [1 ]
Soliman, T. S. [2 ,3 ]
Khalid, A. [4 ]
Awad, M. M. [5 ]
Abdallah, S. [4 ]
机构
[1] British Univ Egypt BUE, Nanotechnol Res Ctr NTRC, Suez Desert Rd, El Sherouk City 11837, Cairo, Egypt
[2] Benha Univ, Fac Sci, Phys Dept, Banha 13518, Egypt
[3] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620000, Russia
[4] Benha Univ, Fac Engn Shoubra, Dept Basic Engn Sci, Banha, Egypt
[5] Loughborough Univ, Phys Dept, Loughborough LE11 3TU, Leics, England
关键词
ZnO; rGO; Refractive index; UV -visible spectroscopy;
D O I
10.1016/j.matlet.2023.135465
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The co-precipitation method was used to synthesize ZnO nanoparticles (NPs). Then, graphene oxide (GO) sheets which were reduced during the reaction process to become (rGO), were embellished with ZnO NPs. The impact of rGO on the structure and morphology of ZnO was investigated using XRD, FTIR, TEM, and SEM techniques. Investigating the optical characteristics was done using UV-vis spectroscopy. ZnO exhibits a hexagonal phase, as proved by XRD. The average crystallite size reduced from 22 to 18 nm after being anchored on rGO sheets. TEM and SEM testify to the presence of ZnO in nanoscales with quasi-spherical shapes, which dispersed homogeneously along the GO sheets. The optical bandgap was increased from 2.57 eV to 3.17 eV for ZnO and ZnO-rGO, respectively. Based on the obtained optical bandgap, the refractive index of ZnO and ZnO-rGO nanocomposite was theoretically determined using different models such as Moss and Ravindra models. ZnO-rGO nanocomposite's ability to change optical characteristics makes it a superior nominee for optoelectronic applications.
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页数:5
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