Citation: ZHANG Yuan, XU Jiaxin, DENG Hongquan, JIANG Qiying. Preparation and Performance of Gd³⁺-Doped ZnO[J]. Chinese Journal of Applied Chemistry, ;2020, 37(3): 340-349. doi: 10.11944/j.issn.1000-0518.2020.03.190175 shu

Preparation and Performance of Gd³⁺-Doped ZnO

a.
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
b.
Center of Engineering Technology, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China

Corresponding author: JIANG Qiying, jqy_163@163.com
Received Date: 21 June 2019
Revised Date: 29 August 2019
Accepted Date: 20 September 2019

Fund Project: Sichuan′s Training Program of Innovation and Entrepreneurship for Undergraduate S201910619032Supported by Sichuan′s Training Program of Innovation and Entrepreneurship for Undergraduate(No.S201910619032)

Figures(11)

In order to improve photocatalytic activity and acid-resistant alkalinity of ZnO and expand the absorption range of light, nanosized ZnO particles doped with Gd³⁺ (Zn_1-xGd_xO₂(x=0~0.1)) were synthesized by thermal decomposition of the coordinated precursor, in which ethylenediamine tetraacetic acid(H₄EDTA) is the ligand. Effects of the doping amount of Gd³⁺ on the structure, phase, morphology, optical properties and photo-electrical behaviors of ZnO were studied by X-ray diffraction (XRD) spectrometry, ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS), Fourier transform infrared (FT-IR) spectroscopy, flurescence spectroscopy (FL), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), dynamic photoelectrical current curve (i-t), etc. XRD results show that when the amount of Gd³⁺ is below 3%, there is a single phase of ZnO with hexagonal wurtzite structure. With the increase of Gd³⁺ doping(>3%), a little bit of second phase of Gd₂O₃ shows up and the grain size of ZnO is reduced. From i-t results, Gd³⁺ doping amount of 1% exhibits the biggest current density of 10 mA/m². With the increase of Gd³⁺ doping, the band structure of ZnO is changed, the value of conduction band (CB), valence band (VB) and band-gap value (E_g) of ZnO are all reduced. At the same time, photo-degradation results of methyl orange (MO) reveal that Gd³⁺ doping can enhance the photocatalytic activity of ZnO, and the suitable amount is 1%. The catalytic selectivity and acid-resistant alkalinity of ZnO and Gd-doped ZnO were also studied simply.
- ZnO,
- photo-catalysis,
- Gd³⁺,
- doping,
- photoelectric response
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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and Performance of Gd3+-Doped ZnO

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通讯作者: 陈斌, bchen63@163.com

Preparation and Performance of Gd³⁺-Doped ZnO