Review Article
Year: 2022 | Month: January | Volume: 9 | Issue: 1 | Pages: 216-230
DOI: https://doi.org/10.52403/ijrr.20220128
Recent Advances in Doped Bi2O3 and its Photocatalytic Activity: A Review
Bella Aprimanti Utami1, Heri Sutanto1,3, Eko Hidayanto1, Ilham Alkian2,3
1Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Semarang-Indonesia
2Department of Environmental Science, Graduate School, Diponegoro University, Semarang-Indonesia
3Smart Materials Research Center (SMARC), Diponegoro University, Semarang-Indonesia
Corresponding Author: Heri Sutanto
ABSTRACT
Bismuth Oxide (Bi2O3) has a very promising photocatalytic ability to degrade waste pollutants under visible light irradiation because it has a small energy gap of around 2.85-2.58 eV. Although it has excellent potential as a photocatalyst, Bi2O3 has the disadvantage of a high electron-hole pair recombination rate, which will reduce its photocatalytic activity. To overcome these problems, surface modifications, defect recognition, or doping of Bi2O3 are carried out to obtain a more effective and efficient photocatalyst to degrade waste pollutants under visible light irradiation. Several studies by researchers have been described for the modification of Bi2O3 by doping. Various types of doping are given, such as doping in elements or doping in the form of compounds to form composites. Based on several studies that have been described, appropriate doping has been shown to increase the photocatalytic activity of Bi2O3.
Keywords: Bi2O3, Photocatalyst, Doping
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