Journal of Advances in Developmental Research

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Photocatalysis for Environmental Cleanup: Mechanisms and Applications

Author(s) Dr. Seema Arora
Country India
Abstract Photocatalysis has emerged as a promising green technology for environmental remediation, offering efficient degradation of organic and inorganic pollutants under light irradiation. This review synthesizes published scientific research and experimental data available up to 2013, with a special focus on the Indian context. It explores the fundamental mechanisms of photocatalysis, including redox reactions triggered by semiconductor materials, and elaborates on reactor designs suitable for Indian environmental conditions. The paper highlights key photocatalytic materials such as TiO₂, ZnO, and their doped and composite forms, evaluating their performance in degrading dyes, phenols, pesticides, and microbial contaminants. Numerical findings from Indian studies demonstrate degradation efficiencies ranging from 60% to over 95% depending on catalyst composition and pollutant type. Real-world applications across wastewater treatment, air purification, and rural drinking water systems are discussed, supported by data from field trials and pilot studies. Despite its potential, photocatalysis faces challenges related to limited visible light activation, catalyst recovery, and scalability. Economic and policy constraints also limit its widespread deployment. However, with India’s abundant solar energy and increasing environmental demands, the technology holds substantial promise for decentralized and sustainable pollution control. This paper concludes by recommending future research directions and policy interventions to facilitate the translation of photocatalysis from lab-scale innovation to field-scale implementation in India.
Keywords Photocatalysis, Environmental Cleanup, TiO₂, ZnO, Wastewater Treatment, Solar Catalysis, India, Visible Light, Semiconductor Catalysts, Water Purification
Field Chemistry
Published In Volume 5, Issue 2, July-December 2014
Published On 2014-12-05
Cite This Photocatalysis for Environmental Cleanup: Mechanisms and Applications - Dr. Seema Arora - IJAIDR Volume 5, Issue 2, July-December 2014. DOI 10.5281/zenodo.15261334
DOI https://doi.org/10.5281/zenodo.15261334
Short DOI https://doi.org/g9f9x7
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