Recent Advances in Chemical Engineering

Iyyaswami, Regupathi; Kodialbail, Vidya Shetty; Murugesan, Thanabalan

doi:10.1007/978-981-10-1633-2

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…An increase in the calcination temperature to 600 °C causes the formation of the crystalline structure of zinc titanate (ZnTiO 3 ), which is linked to an improvement in photocatalytic activity. Many researchers have described the very good photocatalytic properties of ZnTiO 3 in visible light (Perween and Ranjan 2017;Regupathi et al 2016;Yan et al 2015). The material calcined at 700 °C (TiZn_700) has slightly poorer photooxidation properties for the photodegradation of organic pollutants, because the XRD pattern reveals diffraction peaks from the rutile crystalline structure, which is considered to reduce the efficiency of photodegradation.…”

Section: Analysis Of Photocatalytic Activitymentioning

confidence: 99%

“…The mechanism of degradation of pollutants such as dyes or phenol derivativesis widely known in the scientific literature. Many scientists (Gayathri et al 2015;Perween and Ranjan 2017;Sirajudheen et al 2016;Surendar et al 2014;Yan et al 2015) describe the mechanism of degradation using ZnTiO 3 and TiO 2 as photocatalysts. On this basis we propose a possible mechanism and reactions for the photodegradation of organic pollutants in the presence of the synthesized materials.…”

Section: Analysis Of Photocatalytic Activitymentioning

confidence: 99%

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Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation

et al. 2019

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A TiO 2 -ZnO binary oxide system (with molar ratio TiO 2 :ZnO = 8:2) was synthesized by a hydrothermal method, assisted by calcination at temperatures of 500, 600 and 700 °C, using zinc citrate as the precursor of ZnO. The morphology (SEM, TEM), crystalline structure (XRD, Raman spectroscopy), diffuse reflectance spectra (DRS), chemical surface composition (EDXRF), porous structure parameters (low-temperature N 2 sorption) and characteristic functional groups (FT-IR) of the TiO 2 -ZnO oxide materials were comprehensively analyzed. The novelty of this work is the observation of the coexistence of the crystalline structures of anatase and ZnTiO 3 in TiO 2 -ZnO oxide materials. Moreover, it is shown that the obtained materials absorb visible radiation. The key stage of the study was the evaluation of the photocatalytic activity of the TiO 2 -ZnO binary oxide systems in the degradation of model organic pollutants: C.I. Basic Red 1, C.I. Basic Violet 10, C.I. Basic Blue 3 and 4-nitrophenol. For all synthesized materials, a high efficiency of degradation of the model organic impurities was demonstrated. The results show that the synthesized products may be materials of interest for use in the degradation of organic pollutants. Moreover, the kinetics of the photocatalytic degradation of selected organic compounds were determined based on the Langmuir-Hinshelwood equation, assuming a pseudo-first-order (PFO) reaction.

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Section: Analysis Of Photocatalytic Activitymentioning

confidence: 99%