TY - JOUR
T1 - A review on recent advancements in photocatalytic remediation for harmful inorganic and organic gases
AU - Priya, A. K.
AU - Suresh, R.
AU - Kumar, P. Senthil
AU - Rajendran, Saravanan
AU - Vo, Dai Viet N.
AU - Soto-Moscoso, Matias
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/12
Y1 - 2021/12
N2 - Due to the continuous increase in industrial pollution and modern lifestyle, several types of air contaminants and their concentrations are emerging in the atmosphere. Besides, photocatalysis has gained much attention in the elimination of air pollution. Several ultraviolet and visible light active photocatalysts were tested in air pollutant treatment and thereby, the number of reports was increased in the past few years. In this context, this review describes the photocatalytic treatment of gaseous inorganic contaminants like NOx, H2S, and organic pollutants like formaldehyde, acetaldehyde, and benzene derivatives. Different photocatalysts with their air pollutant removal efficiency were explained. Improving strategies such as metal/non-metal doping, composite formation for photocatalyst activities have been studied. Moreover, an analysis is presented from each of the existing photocatalytic immobilization approaches. Also, factors responsible for effective photocatalysis were explained. Overall, the photocatalytic abatement technique is an auspicious way to eliminate different air contaminants. Besides, existing drawbacks and future challenges are also discussed.
AB - Due to the continuous increase in industrial pollution and modern lifestyle, several types of air contaminants and their concentrations are emerging in the atmosphere. Besides, photocatalysis has gained much attention in the elimination of air pollution. Several ultraviolet and visible light active photocatalysts were tested in air pollutant treatment and thereby, the number of reports was increased in the past few years. In this context, this review describes the photocatalytic treatment of gaseous inorganic contaminants like NOx, H2S, and organic pollutants like formaldehyde, acetaldehyde, and benzene derivatives. Different photocatalysts with their air pollutant removal efficiency were explained. Improving strategies such as metal/non-metal doping, composite formation for photocatalyst activities have been studied. Moreover, an analysis is presented from each of the existing photocatalytic immobilization approaches. Also, factors responsible for effective photocatalysis were explained. Overall, the photocatalytic abatement technique is an auspicious way to eliminate different air contaminants. Besides, existing drawbacks and future challenges are also discussed.
KW - Air pollutants
KW - Inorganic gases
KW - Photocatalyst
KW - Sunlight
KW - Volatile organic compounds
UR - https://www.scopus.com/pages/publications/85109449303
U2 - 10.1016/j.chemosphere.2021.131344
DO - 10.1016/j.chemosphere.2021.131344
M3 - Review article
C2 - 34225112
AN - SCOPUS:85109449303
SN - 0045-6535
VL - 284
JO - Chemosphere
JF - Chemosphere
M1 - 131344
ER -
