Photocatalytic Degradation of Nitrobenzene Using Nanocrystalline TiO2 Photocatalyst Doped with Zn Ions

Abstract

Photocatalysis is a method widely used in the degradation of organic pollutants of the environment. The development of new materials is very important to improve the photocatalytic properties and to find new applications for TiO<sub>2</sub> as a photocatalyst. In this article we reported the synthesis of a photocatalyst based on TiO<sub>2</sub> doped with Zn<sup>2+</sup> ions highly efficient in the degradation of nitrobenzene. The results of photocatalytic activity experiments showed that the Zn<sup>2+</sup> doped TiO<sub>2</sub> is more active than un-doped TiO<sub>2</sub> catalyst with an efficiency of 99% for the nitrobenzene degradation at 120 min with an apparent rate constant of 35 × 10<sup>-3</sup> min<sup>-1</sup>.

Effective Degradation of Aqueous Nitrobenzene Using the SrFeO3−δ Photocatalyst under UV Illumination and Its Kinetics and Mechanistic Studies

“…Further, photocatalytic results in the present study were compared with the reported TiO 2 based catalysts for the degradation of nitrobenzene and were shown in Table . It reveals that the SrFeO 3−δ catalyst showed efficient NB degradation in shorter duration and less UV power as compared to the reported catalysts. ,,− …”

Polyelectrolyte‐controlled visible light catalytic reduction of nitrobenzene

“…The TiO 2 particles which are positively charged in acidic conditions 57 can be adsorbed by complexation with Cl − counter ions through ion‐binding interactions 58 . On the other hand, nitrobenzene can easily generate a stable complex via donating electrons to the vacant d orbital of TiO 2 particles 59 . Therefore, the nitrobenzene acts as a strong Lewis base and can adsorb on the positively charged surface of TiO 2 .…”

Synthesis and Characterization of Zinc Peroxide Nanoparticles for the Photodegradation of Nitrobenzene Assisted by UV-Light

“…The reaction conditions to measure the photocatalytic activity of the ZnO 2 nanoparticles for NB degradation are specified by Reynoso-Soto et al (2013) [65]. Briefly, for the photocatalysis reactions the solution prepared was 250 mL of NB at 15 ppm and ZnO 2 nanoparticles at 20, 30 and 40 ppm at a neutral pH unless specified.…”