Adsorption and Photodegradation Efficiency of TiO 2 /Fe 2 O 3 /PAC and TiO 2 /Fe 2 O 3 /Zeolite Nanophotocatalysts for the Removal of Cyanide

Parisa Eskandari, Mehrdad Farhadian, Ali Reza Solaimany Nazar, Byong-Hun Jeon

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3 Citations (Scopus)

Abstract

The synthesized TiO 2 /Fe 2 O 3 nanostructures supported on powder-activated carbon (PAC) and zeolite at different mole ratios of Fe 3+ /TiO 2 were characterized by XRD, XRF, FESEM, EDX, TEM, FTIR, BET, and, PL analyses and their cyanide photodegradation mechanism was thoroughly discussed. The results confirmed not only TiO 2 /Fe 2 O 3 /PAC had higher photocatalytic and adsorption capability but also better structural stability and reusability for cyanide removal than TiO 2 /Fe 2 O 3 /zeolite. The first-order kinetics model indicated that the photodegradation rate using TiO 2 /Fe 2 O 3 /PAC was 1.3 times higher than that of TiO 2 /Fe 2 O 3 /zeolite. The response surface methodology (RSM) assessment showed that pH, irradiation time and initial cyanide concentration using UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /zeolite system had more effects on the degradation, respectively; whereas the effectiveness of UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /PAC process was highly influenced by initial cyanide concentration than the other two parameters. High R 2 and well-fitted residual plots approved the accuracy of the models in predicting the cyanide degradation efficiency using both the photocatalysts.

Original languageEnglish
Pages (from-to)2099-2112
Number of pages14
JournalIndustrial and Engineering Chemistry Research
Volume58
Issue number5
DOIs
StatePublished - 2019 Feb 6

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Zeolites
Photodegradation
Cyanides
Powders
Activated carbon
Adsorption
Degradation
Reusability
Photocatalysts
Energy dispersive spectroscopy
Nanostructures
Irradiation
Transmission electron microscopy
Kinetics

Cite this

@article{7887d2c1185140ec982435de95530415,
title = "Adsorption and Photodegradation Efficiency of TiO 2 /Fe 2 O 3 /PAC and TiO 2 /Fe 2 O 3 /Zeolite Nanophotocatalysts for the Removal of Cyanide",
abstract = "The synthesized TiO 2 /Fe 2 O 3 nanostructures supported on powder-activated carbon (PAC) and zeolite at different mole ratios of Fe 3+ /TiO 2 were characterized by XRD, XRF, FESEM, EDX, TEM, FTIR, BET, and, PL analyses and their cyanide photodegradation mechanism was thoroughly discussed. The results confirmed not only TiO 2 /Fe 2 O 3 /PAC had higher photocatalytic and adsorption capability but also better structural stability and reusability for cyanide removal than TiO 2 /Fe 2 O 3 /zeolite. The first-order kinetics model indicated that the photodegradation rate using TiO 2 /Fe 2 O 3 /PAC was 1.3 times higher than that of TiO 2 /Fe 2 O 3 /zeolite. The response surface methodology (RSM) assessment showed that pH, irradiation time and initial cyanide concentration using UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /zeolite system had more effects on the degradation, respectively; whereas the effectiveness of UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /PAC process was highly influenced by initial cyanide concentration than the other two parameters. High R 2 and well-fitted residual plots approved the accuracy of the models in predicting the cyanide degradation efficiency using both the photocatalysts.",
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Adsorption and Photodegradation Efficiency of TiO 2 /Fe 2 O 3 /PAC and TiO 2 /Fe 2 O 3 /Zeolite Nanophotocatalysts for the Removal of Cyanide . / Eskandari, Parisa; Farhadian, Mehrdad; Solaimany Nazar, Ali Reza; Jeon, Byong-Hun.

In: Industrial and Engineering Chemistry Research, Vol. 58, No. 5, 06.02.2019, p. 2099-2112.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Adsorption and Photodegradation Efficiency of TiO 2 /Fe 2 O 3 /PAC and TiO 2 /Fe 2 O 3 /Zeolite Nanophotocatalysts for the Removal of Cyanide

AU - Eskandari, Parisa

AU - Farhadian, Mehrdad

AU - Solaimany Nazar, Ali Reza

AU - Jeon, Byong-Hun

PY - 2019/2/6

Y1 - 2019/2/6

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AB - The synthesized TiO 2 /Fe 2 O 3 nanostructures supported on powder-activated carbon (PAC) and zeolite at different mole ratios of Fe 3+ /TiO 2 were characterized by XRD, XRF, FESEM, EDX, TEM, FTIR, BET, and, PL analyses and their cyanide photodegradation mechanism was thoroughly discussed. The results confirmed not only TiO 2 /Fe 2 O 3 /PAC had higher photocatalytic and adsorption capability but also better structural stability and reusability for cyanide removal than TiO 2 /Fe 2 O 3 /zeolite. The first-order kinetics model indicated that the photodegradation rate using TiO 2 /Fe 2 O 3 /PAC was 1.3 times higher than that of TiO 2 /Fe 2 O 3 /zeolite. The response surface methodology (RSM) assessment showed that pH, irradiation time and initial cyanide concentration using UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /zeolite system had more effects on the degradation, respectively; whereas the effectiveness of UV/H 2 O 2 /TiO 2 /Fe 2 O 3 /PAC process was highly influenced by initial cyanide concentration than the other two parameters. High R 2 and well-fitted residual plots approved the accuracy of the models in predicting the cyanide degradation efficiency using both the photocatalysts.

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