Synthesis of BiFeO<sub>3</sub>: Y<sup>3+</sup> Nanostructure by Sol-gel Method and Their Photocatalytic Activity

Wang Jia-xi; Luo Li; Yun Rui; Li Xiao-fen; Wang Yin-hai; Zhang Wei

doi:10.12052/gdutxb.190051

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Synthesis of BiFeO₃: Y³⁺ Nanostructure by Sol-gel Method and Their Photocatalytic Activity

更新时间：2026-05-27

- Synthesis of BiFeO₃: Y³⁺ Nanostructure by Sol-gel Method and Their Photocatalytic Activity
- Vol. 37, Issue 1, Pages: 42-47(2020)
- 作者机构：
  
  广东工业大学物理与光电工程学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.190051
  CLC： O483
- Online First：25 January 2020，
  
  Published：2020
- 稿件说明：
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王家玺, 罗莉, 贠蕊, 李小芬, 王银海, 张伟. 溶胶−凝胶法制备BiFeO₃: Y³⁺纳米粉末及其光催化性能研究[J]. 广东工业大学学报, 2020, 37(1): 42-47. DOI: 10.12052/gdutxb.190051.

Wang Jia-xi, Luo Li, Yun Rui, et al. Synthesis of BiFeO₃: Y³⁺ Nanostructure by Sol-gel Method and Their Photocatalytic Activity[J]. 2020, 37(1): 42-47. DOI: 10.12052/gdutxb.190051.
王家玺, 罗莉, 贠蕊, 李小芬, 王银海, 张伟. 溶胶−凝胶法制备BiFeO₃: Y³⁺纳米粉末及其光催化性能研究[J]. 广东工业大学学报, 2020, 37(1): 42-47. DOI: 10.12052/gdutxb.190051. DOI：

Wang Jia-xi, Luo Li, Yun Rui, et al. Synthesis of BiFeO₃: Y³⁺ Nanostructure by Sol-gel Method and Their Photocatalytic Activity[J]. 2020, 37(1): 42-47. DOI: 10.12052/gdutxb.190051. DOI：

摘要

多功能铁电材料是近年来的热门材料

为了研究铁电材料在光催化中的应用

通过溶胶−凝胶法在空气氛围下制备了铁酸铋(BiFeO

)和不同Y

掺杂浓度(Bi

1–

FeO

)的纳米粉体材料。通过X射线衍射仪(X-ray diffraction

XRD)

扫描电镜(scanning electron microscopy

SEM)和X射线光电子能谱(X-ray photoelectron spectroscopy

XPS)表征了样品的结构、形貌和表面化学组成等物理化学性质。并利用分光光度计和光化学反应实验测试了样品的吸收谱和在紫外灯照射下的光催化效果。研究发现

掺杂Y

不会改变晶格结构

但是减小了晶粒尺寸和禁带宽度。同时

根据O 1s 的XPS窄谱扫描的拟合分析发现

引入Y

可以有效提高氧空位的含量

而氧空位可以降低空穴−电子对的复合率

提高载流子利用率。因此

掺杂Y

可以提高BiFeO

的光催化效率

使其成为一种很有潜力的光催化材料。

Abstract

Multi-functional ferroelectric materials are the major topic of discussion in recent years. In order to study the photocatalytic property of ferroelectric materials

BiFeO

and Bi

FeO

nanostructure were prepared by sol-gel method. The crystal structure

morphology

chemical composition and other physiochem

ical properties of the samples were investigated by X-ray diffraction (XRD)

scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). In addition

the ultraviolet-visible spectrophotometer and photochemical reactions instrument were applied to study the absorption and the photocatalytic property of the samples. The results show that doping of Y

can reduce the grain size and the forbidden band gap without changing the lattice structure. Also

according to the fitting analysis of XPS narrow spectrum of O 1s

it is found that the content of oxygen vacancies were increased after Y

doping. The oxygen vacancies can reduce the recombination rate of hole-electron pairs so that the utilization of carriers is improved. Therefore

the doping of Y

can increase the photocatalytic efficiency of BiFeO

and it can be a promising photocatalytic material.

关键词

Keywords

references

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Synthesis of BiFeO3: Y3+ Nanostructure by Sol-gel Method and Their Photocatalytic Activity

DOI：10.12052/gdutxb.190051

摘要

Abstract

关键词

Keywords

references

Synthesis of BiFeO₃: Y³⁺ Nanostructure by Sol-gel Method and Their Photocatalytic Activity