Book ChapterDOI
Heterogeneous Photocatalysis for Indoor Air Purification: Recent Advances in Technology from Material to Reactor Modeling
Mohan V. Lekshmi,S.M. Shiva Nagendra,M.P. Maiya +2 more
- pp 147-166
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TLDR
In this article, the current status of PCO material technologies, coating methods, performance test methods, and modeling for real-world indoor air-purification application is reviewed and some recommendations for the future research on improving material selection and reactor design to minimize by-product generation and to promote commercialization are also discussed.Abstract:
Heterogeneous photocatalytic oxidation (PCO) has attracted much attention in indoor air-purification applications. Recently, researches focus on developing novel photocatalyst based filters for integrating with the heating, ventilation, and air conditioning (HVAC) systems as well as portable air purifiers. A comprehensive knowledge on factors influencing the indoor volatile organic compounds (VOCs) degradation has been established both in bench-scale and pilot-scale experiments. This paper reviews the current status of PCO material technologies, coating methods, performance test methods, and modeling for real-world indoor air-purification application. Due attention to the basic principle of PCO and the effect of operating parameters is provided, followed by a discussion on the modes of PCO application for buildings. The review also concentrates on the practical limitations in scaling-up PCO air purifiers for large-scale applications. Some recommendations for the future research on improving material selection and reactor design to minimize by-product generation and to promote commercialization are also discussed.read more
Citations
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Platinized titanium dioxide (Pt/TiO2) as a multi-functional catalyst for thermocatalysis, photocatalysis, and photothermal catalysis for removing air pollutants
TL;DR: In this article, the applicability of platinized titanium dioxide (Pt/TiO2) for the removal of gaseous pollutants in light of its numerous advantages (e.g., high removal efficiency, stability, regenerability, and sustainability).
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An Overview of Photoreactors and Computational Modeling for the Intensification of Photocatalytic Processes in the Gas-Phase: State-of-Art
TL;DR: In this paper, a comprehensive review of the photoreactors for gas-phase reaction focusing on process intensification and recent computer simulations is provided, in which the state-of-the-art of photocatalytic air treatment providing examples such as the VOCs oxidation and NOx degradation.
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Ultraviolet photocatalytic oxidation technology for indoor volatile organic compound removal: A critical review with particular focus on byproduct formation and modeling.
TL;DR: In this paper, a case study was conducted to develop a support vector machine (SVM) classification model with good accuracy, and challenging compound types, inlet concentrations, and air velocity were found to be the main parameters affecting the applicability of UV-PCO.
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Ultraviolet photocatalytic oxidation technology for indoor volatile organic compound removal: A critical review with particular focus on byproduct formation and modeling
TL;DR: In this article , a case study was conducted to develop a support vector machine (SVM) classification model with good accuracy, and challenging compound types, inlet concentrations, and air velocity were found to be the main parameters affecting the applicability of UV-PCO.
References
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Composite photocatalysts based on TiO2 – carbon for air pollutant removal: Aspects of adsorption
TL;DR: In this paper, the authors tested composite powders of titania with various carbon content with respect to their efficiency of degradation of impurities in air (toluene, acetaldehyde, NO) under UVA illumination in a single-pass flow-through reactor and ISO conditions.
Journal ArticleDOI
Chemical Vapor Deposition in the Corona Discharge of Electrostatic Air Cleaners
Jane H. Davidson,P.J. McKinney +1 more
TL;DR: In this article, a wire-cylinder precipitator was operated with a positive corona discharge for 180 hours with an air/octamethylcyclotetrasiloxane mixture.
Journal ArticleDOI
Photocatalytic air-cleaning using TiO2 nanoparticles in porous silica substrate
TL;DR: In this article, two titania sources were used in an aqueous solution form: a suspension from a TiO2 producer in Slovenia, Cinkarna Celje (CC-40) and a sol, prepared by a low-temperature synthesis developed at the University of Nova Gorica (TiO2-UNG).
Journal ArticleDOI
Recent Advances in Titania-based Composites for Photocatalytic Degradation of Indoor Volatile Organic Compounds
Journal ArticleDOI
Performance analysis of a novel TiO2-coated foam-nickel PCO air purifier in HVAC systems
TL;DR: In this paper, a TiO 2 -coated foam-nickel photocatalytic oxidation (PCO) air purifier was designed for applying to heating, ventilating and air-conditioning (HVAC) systems.