Efficient photocatalytic degradation of nitrobenzene by copper-doped TiO 2 : kinetic study, degradation pathway, and mechanism

Cu-doped TiO (0.1, 0.25, and 0.5% Cu-TiO ) photocatalyst was prepared by sol-gel method and was characterized by powder XRD, FTIR, TEM, SEM, EDX, UV-vis diffuse reflectance (DRS), photoluminescence (PL), and Raman spectroscopy. The XRD spectrum shows tetragonal anatase phase. TEM analysis indicate t...

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Bibliographic Details
Published in:Environmental science and pollution research international 2022-07, Vol.29 (33), p.49925
Main Authors: Akhtar, Tehmina, Nasir, Habib, Sitara, Effat, Bukhari, Syeda Aqsa Batool, Ullah, Sharif, Iqbal, Rana Muhammad Arslan
Format: Article
Language:English
Subjects:
Catalysis
Copper
Kinetics
Nitrobenzenes
Titanium - chemistry
Online Access:Get full text
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Summary:Cu-doped TiO (0.1, 0.25, and 0.5% Cu-TiO ) photocatalyst was prepared by sol-gel method and was characterized by powder XRD, FTIR, TEM, SEM, EDX, UV-vis diffuse reflectance (DRS), photoluminescence (PL), and Raman spectroscopy. The XRD spectrum shows tetragonal anatase phase. TEM analysis indicate that the nanoparticles were spherical with sizes 12-13 nm. The degradation of NB was studied, and an optimal degradation time of 180 min led to 98.6% NB abatement of NB = 0.05 mM, pH = 4, and catalyst loading = 50 mg/100 mL, under visible light. The degradation of NB follows the pseudo-first-order kinetics. The reusability studies indicated the excellent stability of 0.25% Cu-TiO .
ISSN:1614-7499