Comparative Study on the Photocatalytic Degradation of Paraquat Using Tungsten-Doped TiO2 Under UV and Sunlight

  • Manpreet Kaur
  • Anoop Verma
  • Hema SetiaEmail author
  • Amrit Pal Toor
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 30)


Photocatalytic degradation of paraquat dichloride a poisonous dipyridilium herbicide present as a pollutant in surface water has been studied in a batch photoreactor using P25 TiO2 and tungsten (W)-doped TiO2. Effect of varying parameters such as substrate concentration, catalyst loading, pH of the solution, light conditions, type of catalyst, and amount of dopant has also been studied. It was observed that synthesized catalyst with 2.5 wt% W-doped TiO2 exhibited higher percentage degradation efficiency than bare TiO2 under optimum conditions of catalyst loading, pH, and substrate concentration under solar irradiation. W-TiO2 catalyst has been synthesized and characterized using UV–Vis DRS, XRD, SEM-EDS, and TEM techniques. Maximum degradation of 98% was observed for 25 ppm paraquat, at a pH of 6.5, catalyst loading of 1 g L−1, and 2.5 wt% W-doped TiO2 under sunlight.


Paraquat Photocatalysis Degradation Doping Tungsten-doped TiO2 Wastewater 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Manpreet Kaur
    • 1
  • Anoop Verma
    • 2
  • Hema Setia
    • 3
    Email author
  • Amrit Pal Toor
    • 4
  1. 1.Energy Research CentrePanjab UniversityChandigarhIndia
  2. 2.School of Energy and EnvironmentThapar Institute of Engineering and TechnologyPatialaIndia
  3. 3.University Institute of Engineering and TechnologyPanjab UniversityChandigarhIndia
  4. 4.Dr SSB University Institute of Chemical Engineering and TechnologyPanjab UniversityChandigarhIndia

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