Defect-mediated optical properties of Fe-substituted TiO2 nanoparticles

被引：5

作者：

Rathore, Neetu ^{[1
,2
]}

Kulshreshtha, Asita ^{[1
]}

Shukla, Rajesh Kumar ^{[2
]}

Sharma, Darshan ^{[3
]}

机构：

[1] Amity Univ, Amity Sch Appl Sci Lucknow, Lucknow, Uttar Pradesh, India

[2] Univ Lucknow, Dept Phys, Lucknow, Uttar Pradesh, India

[3] Harish Chandra Postgrad Coll, Dept Phys, Varanasi 221001, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2022年 / 19卷 / 03期

关键词：

chromaticity; doping; nanostructure materials; size-strain plot; sol-gel methods; Urbach energy; MAGNETIC-PROPERTIES; ZNO NANOPARTICLES; ANATASE; TRANSFORMATION; NANOCRYSTALS; CO;

D O I：

10.1111/ijac.14006

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Here, sol-gel derived Fe-TiO2 anatase nanoparticles with varying concentrations of Ti(1-x)FexO2 (x = 0%, 1%, 5%, 10%) were prepared. The structural, morphological, and optical properties of prepared samples were studied. X-ray diffraction (XRD) patterns show the formation of pure anatase phase. The mean crystallite size of Fe-TiO2 decreases with increase in the concentration of Fe. Fourier transform infrared spectroscopy (FTIR) spectra confirmed the presence of Ti-O vibrational band for all the samples. In Raman spectrum, peak broadening and red shifting linked with Eg similar to 144 cm(-1) divulge the Fe substitution at Ti sites into host lattice structure. Photoluminescence (PL) spectra verified nine peaks related to near band-edge emission and various defect states. The UV-vis diffuse reflectance spectra represent redshift and reduction in the bandgap energy. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations show that the size of the grains decreases with increase in Fe doping concentration. The study shows that Fe-doped TiO2 anatase phase nanoparticles are suitable for photocatalytic activity and solar cell applications.

引用

页码：1766 / 1778

页数：13

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