Issue 1, 2023

Visible light-activated photocatalytic activity of TiO2–crystal violet based superhydrophobic paint against VOCs in indoor air

Abstract

With industrial growth, air pollution has also increased. Air pollution is accountable for several diseases and numerous deaths. Volatile organic compounds (VOCs) are one of the most common classes of air pollutants and are mostly caused by anthropogenic activities. These VOCs have adverse effects on human health as well as on the environment. Photocatalytic oxidation is one of the most common methods available to get rid of VOCs. Photocatalytic oxidation (PCO) is usually performed under UV light, but various photocatalysts, which can work under the visible region of light (white light), have also been reported lately. Recently, PFOTES–CV-based visible light activated-superhydrophobic TiO2 paints have been reported to have bactericidal activity according to the literature. In this study, we have used these TiO2-based paints to study their photocatalytic efficiency against VOCs. The effects of multiple parameters including the input concentration of VOCs (2–5 ppm), amount of PFOTES (1–5%), light power source (8, 24 W), and humidity (60–70%) have been studied. Substantial photocatalytic efficiency was observed against toluene, p-xylene, and acetaldehyde. ∼92% against toluene, ∼99% against p-xylene, and considerable removal efficiency against acetaldehyde were found with the paint made with 3% PFOTES. Characterization of the photocatalysts was carried out by XPS, FTIR, and DRS. The PCO reactor under visible light was used for the photocatalytic decomposition reaction and the gas analysis was performed by GC/MS.

Graphical abstract: Visible light-activated photocatalytic activity of TiO2–crystal violet based superhydrophobic paint against VOCs in indoor air

Supplementary files

Article information

Article type
Paper
Submitted
09 jun 2022
Accepted
27 set 2022
First published
02 nov 2022
This article is Open Access
Creative Commons BY-NC license

Environ. Sci.: Adv., 2023,2, 69-77

Visible light-activated photocatalytic activity of TiO2–crystal violet based superhydrophobic paint against VOCs in indoor air

A. Anus, V. C. T. Le, M. Sheraz, S. Kim and W. R. Lee, Environ. Sci.: Adv., 2023, 2, 69 DOI: 10.1039/D2VA00120A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements