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What is Photocatalyst

Chapter 19
Handbook of Research on Emerging Developments and Environmental Impacts of Ecological Chemistry
Chemical compounds with the property to absorb radiation and utilize for chemical transformation.
Published in Chapter:
Photocatalytic Activity of ZnO Nanoparticles on the Degradation of Organic Dyes Under Solar Light
Sivakumar Krishnamoorthy (Department of Chemistry, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya (Deemed), India) and Dharani M. (Department of Chemistry, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya (Deemed), India)
Copyright: © 2020 |Pages: 23
DOI: 10.4018/978-1-7998-1241-8.ch019
Abstract
Zinc oxide (ZnO) nanoparticles prepared using simple co-precipitation method are characterized and photocatalytic activity is tested on the degradation of methylene blue and rhodamine B organic pollutants. Morphological and structural properties of synthesized nanomaterial have been characterized using FESEM, EDAX spectroscopy, and XRD, while UV-visible DRS spectroscopy and photoluminescence have been used to understand their optical properties. The photocatalytic behaviour of synthesized nanoparticles was evaluated on the degradation of methylene blue (MB) and rhodamine B (RhB) organic pollutants under solar light irradiation. The highest degradation was achieved for MB (100%) over RhB (96%). Preliminary investigation shows the effective degradation of organic pollutants by ZnO nanoparticles.
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Chapter 3
Photocatalytic Purification of Air: Principles, Opportunities, and Challenges
Substance which, due to absorption of light quantum, participates in chemical changes of reactants causing formation of transition intermediates and a subsequent recovery of its chemical composition after every cycle of interaction.
Published in Chapter: Photocatalytic Purification of Air: Principles, Opportunities, and Challenges; From: Handbook of Research on Advancements in Environmental Engineering
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Chapter 5
Nanophotocatalyst-Infused Textile Composites for Environmental Remediation
These are the material which change the rate of chemical reaction when exposed to light.
Published in Chapter: Nanophotocatalyst-Infused Textile Composites for Environmental Remediation; From: Smart and Sustainable Applications of Nanocomposites
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