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钡掺杂铋铁氧体薄膜的合成、表征及光催化活性

Synthesis, Characterization, and Photocatalytic Activity of Ba-Doped BiFeO Thin Films.

作者信息

Abdelmadjid Khiat, Gheorghiu Felicia, Abderrahmane Boughelout

机构信息

Research Center in Industrial Technologies (CRTI), P.O. Box 64 Cheraga, Algiers 16014, Algeria.

RAMTECH, Department of Exact and Natural Sciences, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I, nr. 11, 700506 Iasi, Romania.

出版信息

Materials (Basel). 2022 Jan 26;15(3):961. doi: 10.3390/ma15030961.

DOI:10.3390/ma15030961
PMID:35160906
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8838121/
Abstract

In the present paper, BiBaFeO (BBFO) thin films (where x = 0, 0.02 and 0.05) were prepared by a combined sol-gel and spin-coating method. The influence of Ba substitutions on the structural, microstructural, optical properties, and photocatalytic activity of BiFeO thin films has been studied. X-ray diffraction pattern correlated with FTIR analysis results confirms that all the films have a perovskite structure of rhombohedral symmetry with an R3m space group. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to investigate the surface morphology and reveals microstructural modifications with the increase in Ba concentration. The optical properties show that the band gap is narrowed after doping with Ba ions and decreases gradually with the increase of doping content. The photocatalytic investigations of deposited films revealed that Ba doping of BFO material leads to the enhancement of photocatalytic response. The present data demonstrates that BiBaFeO (BBFO) thin films can be used in photocatalytic applications.

摘要

在本论文中，通过溶胶-凝胶和旋涂相结合的方法制备了BiBaFeO（BBFO）薄膜（其中x = 0、0.02和0.05）。研究了Ba替代对BiFeO薄膜的结构、微观结构、光学性质和光催化活性的影响。与傅里叶变换红外光谱（FTIR）分析结果相关的X射线衍射图谱证实，所有薄膜均具有菱面体对称的钙钛矿结构，空间群为R3m。利用原子力显微镜（AFM）和扫描电子显微镜（SEM）研究了表面形貌，并揭示了随着Ba浓度的增加微观结构的变化。光学性质表明，掺杂Ba离子后带隙变窄，并随着掺杂含量的增加而逐渐减小。对沉积薄膜的光催化研究表明，BFO材料的Ba掺杂导致光催化响应增强。目前的数据表明，BiBaFeO（BBFO）薄膜可用于光催化应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/d213e1362c78/materials-15-00961-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/fec67ecb6a10/materials-15-00961-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/2a56a7f15e24/materials-15-00961-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/65a3fd1b43fb/materials-15-00961-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/e5617416c368/materials-15-00961-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/dbf711ff3d1d/materials-15-00961-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/800051a5ec77/materials-15-00961-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/d213e1362c78/materials-15-00961-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/fec67ecb6a10/materials-15-00961-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/2a56a7f15e24/materials-15-00961-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/65a3fd1b43fb/materials-15-00961-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/e5617416c368/materials-15-00961-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/dbf711ff3d1d/materials-15-00961-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/800051a5ec77/materials-15-00961-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/669f/8838121/d213e1362c78/materials-15-00961-g007.jpg

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Photocatalytic activity and doping effects of BiFeO nanoparticles in model organic dyes.BiFeO纳米颗粒在典型有机染料中的光催化活性及掺杂效应
Heliyon. 2020 Jan 17;6(1):e03237. doi: 10.1016/j.heliyon.2020.e03237. eCollection 2020 Jan.
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A review on exploration of FeO photocatalyst towards degradation of dyes and organic contaminants.
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J Environ Manage. 2020 Mar 15;258:110050. doi: 10.1016/j.jenvman.2019.110050. Epub 2020 Jan 7.
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