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Licensed Unlicensed Requires Authentication Published by De Gruyter September 7, 2021

Recent developments in photocatalytic degradation of insecticides and pesticides

  • Santosh Kumar Singh

    Santosh Kumar Singh is working as a Scientist-D at CFEES, DRDO, New Delhi. He holds B.Tech. and M.Tech. degrees in Chemical Engineering from IIT (BHU) Varanasi. He is currently doing research for his Ph.D. degree at IIT Roorkee, India.

    , Pradeep Kumar Mishra

    Pradeep Kumar Mishra is a professor in the Department of Chemical Engineering & Technology, IIT (BHU) Varanasi, India He holds a Ph.D. (Chem. Eng.) degree. He is currently the vice-chancellor of Jharkhand University of Technology, Ranchi, India.

    and Siddh Nath Upadhyay

    Siddh Nath Upadhyay is an honorary research professor in the Department of Chemical Engineering & Technology, IIT (BHU) Varanasi, India. He holds a Ph.D. (Chem. Eng.) degree. He is fellow of NASI, INAE, BRSI, IAPSc and IE(I).

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Widespread use of pesticides in agricultural and domestic sectors and their long half-life have led to their accumulation in the environment beyond permissible limits. Advanced chemical oxidation methods including photocatalytic degradation are being widely investigated for their mineralization. Photocatalytic degradation is the most promising method for degrading pesticides as well as other organic pollutants. Titanium dioxide with or without modification has been widely used as the photocatalyst. Some research groups have also tried other photocatalysts. This review presents a critical summary of the research results reported during the past two decades as well as the scope for future research in this area.

Corresponding author: Siddh Nath Upadhyay, Department of Chemical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi, 221005, UP, India, E-mail:

About the authors

Santosh Kumar Singh

Santosh Kumar Singh is working as a Scientist-D at CFEES, DRDO, New Delhi. He holds B.Tech. and M.Tech. degrees in Chemical Engineering from IIT (BHU) Varanasi. He is currently doing research for his Ph.D. degree at IIT Roorkee, India.

Pradeep Kumar Mishra

Pradeep Kumar Mishra is a professor in the Department of Chemical Engineering & Technology, IIT (BHU) Varanasi, India He holds a Ph.D. (Chem. Eng.) degree. He is currently the vice-chancellor of Jharkhand University of Technology, Ranchi, India.

Siddh Nath Upadhyay

Siddh Nath Upadhyay is an honorary research professor in the Department of Chemical Engineering & Technology, IIT (BHU) Varanasi, India. He holds a Ph.D. (Chem. Eng.) degree. He is fellow of NASI, INAE, BRSI, IAPSc and IE(I).


Santosh Kumar Singh is grateful to the Secretary, Department of Defence Research & Development, and Chairman, DRDO, Ministry of Defence, New Delhi, India for sanctioning study leave for carrying out graduate studies.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Supplementary Material

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Received: 2020-10-16
Accepted: 2021-06-29
Published Online: 2021-09-07
Published in Print: 2023-02-23

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