Photocatalytic performance of Bi/Zn co‐doped sol–gel synthesized TiO2 nanoparticles

• DOI: 10.1002/jctb.7555
• Publication Date: 2023-11-08T17:19:31Z
• Authors: Saurav Mishra; Nandana Chakinala; Anand G. Chakinala; Praveen K. Surolia
• Keywords: Bimetallic strip; Nitrobenzene

Abstract BACKGROUND Semiconductor photocatalysts based on TiO 2 nanoparticles were synthesized via the sol–gel method and subsequently modified using monometallic (Bi‐TiO , Zn‐TiO ) bimetallic (Bi/Zn‐TiO doping through wet‐impregnation technique. The prepared underwent comprehensive characterization X‐ray diffraction analysis, Fourier transform infrared spectroscopy, ultraviolet–visible diffuse‐reflectance field emission scanning electron microscopy, photoluminescence, thermal gravimetric analysis. photocatalytic performance of these well‐characterized was assessed for degradation model organic pollutant, nitrobenzene. RESULTS Among various doped catalysts, Bi/Zn co‐doping at a ratio 0.25:0.75 (w/w) exhibited most remarkable synergistic effect, achieving approximately 82% 50 ppm nitrobenzene solution within just 90 min reaction time under ultraviolet light irradiation. rate constant this process determined to be 1.79 × 10 −2 −1 suggesting pseudo‐first‐order kinetics model. CONCLUSION successful Bi Zn metals resulted in improved performance. enhanced could attributed charge transfer facilitated by effect among . This finding highlights significance its potential applications improving efficiency environmental remediation. © 2023 Society Chemical Industry (SCI).