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Photocatalytic paraquat degradation over TiO2 modified by hydrothermal technique in alkaline solution

  • Pallavi Nagaraju , Rattabal Khunphonoi , Shivaraju Harikaranahalli Puttaiah , Totsaporn Suwannaruang , Chatkamol Kaewbuddee and Kitirote Wantala EMAIL logo
Published/Copyright: June 3, 2017
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Journal of Advanced Oxidation Technologies
From the journal Journal of Advanced Oxidation Technologies Volume 20 Issue 2

Abstract

In the present research, titanium nanotubes were synthesized via the soft hydrothermal method. A study on the effect of the synthesizing parameters such as aging temperature and time of the hydrothermal process on the photocatalytic paraquat degradation was explored. Central Composite Design (CCD) was used to determine the influence of the preparation parameter on the optimal condition, main and interaction effects on crystalline size, percent paraquat removal by adsorption and photocatalytic degradation as responses. The XRD pattern of the synthesized nanomaterial reported the anatase phase of titania nanotubes. SEM image of the prepared nanomaterial clearly indicated the agglomerated with tubular structure. Band gap energy of the nanotubes was found lower than that of the pure anatase TiO2. Paraquat removal by adsorption is more effective than by photocatalytic degradation. The error of the model remains insignificant for all the three responses.

Keywords: advanced oxidation process; herbicide; surface response methodology; aging temperature; aging time

Acknowledgment

This research was partially supported by JSS University Mysore. This research work was carried out in the Chemical Kinetics and Applied Catalysis Laboratory (CKCL), Faculty of Engineering, Khon Kaen University (KKU), Thailand. We thank our colleagues from KKU Thailand who provided insight and expertise that greatly assisted the research.

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Published Online: 2017-6-3

© 2017 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/jaots-2017-0004
Keywords for this article
advanced oxidation process; herbicide; surface response methodology; aging temperature; aging time

Articles in the same Issue

  2. Editorial
  4. Excitation Kinetics of Oxygen O(1D) State in Low-Pressure Oxygen Plasma and the Effect of Electron Energy Distribution Function
  6. Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation
  8. Treatment of high salinity wastewater using CWPO process for reuse
  10. Electrochemical Advanced Oxidation Processes (EAOP) to degrade per- and polyfluoroalkyl substances (PFASs)
  12. Effect of feedstock impurities on activity and selectivity of V-Mo-Nb-Te-Ox catalyst in ethane oxidative dehydrogenation
  14. Photocatalytic Degradation of Azo Dyes Over Semiconductors Supported on Polyethylene Terephthalate and Polystyrene Substrates
  16. Effects of calcination temperature on sol-gel synthesis of porous La2Ti2O7 photocatalyst on degradation of Reactive Brilliant Red X3B
  18. ClO2-oxidation-based demulsification of oil-water transition layer in oilfields: An experimental study
  20. Semi-permanent hair dyes degradation at W/WO3 photoanode under controlled current density assisted by visible light
  22. Degradation of PVA (polyvinyl alcohol) in wastewater by advanced oxidation processes
  24. Degradation of imidacloprid insecticide in a binary mixture with propylene glycol by conventional fenton process
  26. Gemini surfactant-assisted synthesis of BiOBr with superior visible light-induced photocatalytic activity towards RhB degradation
  28. Photocatalytic paraquat degradation over TiO2 modified by hydrothermal technique in alkaline solution
  30. Enhancement of Profenofos Remediation Using Stimulated Bioaugmentation Technique
  32. Mechanistic insight on the sonolytic degradation of phenol at interface and bulk using additives
  34. Biosolubilization of low-grade rock phosphate by mixed thermophilic iron-oxidizing bacteria
  36. Degradation of methyl orange using dielectric barrier discharge water falling film reactor
  38. Rapid prediction of hydrogen peroxide concentration eletrogenerated with boron doped diamond electrodes
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