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Abstract As metal oxide, Bismuth ferrite (BiFeO3) is a good semiconductor photocatalyst for environmental remediation due to its eccentric properties such as a multiferroic material, and ferroelectric properties. BiFeO3 has a visible-light band-gap, which makes it convenient for photocatalytic use. The sol-gel method is an extensively used synthesis method for BiFeO3 because it controls shape, size and morphology of the materials. Sol-Gel method provides many advantages, including the ability to easily incorporate dopants and the potential for large-scale production. To improve the photocatalytic properties of BiFeO3, various techniques such as doping and surface morphology control have been used to enhance its photocatalytic activity. Doping of metal in BFO improves its photocatalytic performance by reducing the band gap, which enhances visible light absorption, and reducing electron-hole pair recombination sites, which increases the number of participating electrons and holes in photocatalytic reactions. X-ray diffraction (XRD) studies are used to identify the crystal structure of the sample and to determine its purity. The shifting of X-ray diffraction peaks indicates that the sample has undergone structural changes during synthesis and calcination. The UV-visible spectra show a gradual decrease in the band gap, which is attributed to the doping of metals in BiFeO3. The decrease in the band gap enhances the visible light absorption of BiFeO3, making it more efficient in photocatalytic reactions.