TY - JOUR
T1 - Effective oxygenated boron groups of boron-doped photoreduced graphene oxide for photocatalytic removal of volatile organic compounds
AU - Tai, Xin Hong
AU - Lai, Chin Wei
AU - Yang, Thomas Chung Kuang
AU - Chen, Chia Yun
AU - Abdullah, Abdul Halim
AU - Lee, Kian Mun
AU - Juan, Joon Ching
N1 - Funding Information:
The authors acknowledge the Ministry of Education ( FRGS/1/2021/STG05/UM/02/3 ) and Universiti Malaya ( PPSI-2020-CLUSTER-IDIG03 and ST080–2021 ) for the financial support.
Publisher Copyright:
© 2022 Published by Elsevier Ltd.
PY - 2022/8
Y1 - 2022/8
N2 - The adverse health effects from indoor air pollutants such as volatile organic compounds (VOCs) has intrigued much attention. Photocatalytic oxidation (PCO) is a promising technique to degrade VOCs under ambient conditions. A metal-free photocatalyst, namely boron-doped photoreduced graphene oxide (BPRGO) was synthesized via a facile, scalable, and cost-effective UV irradiation method. The BPRGO photocatalyst managed to remove 80% of the VOCs (100 mg/m3 of methanol) within 6 h (0.283 h-1) under UV-A irradiation. Moreover, up to 91% of the VOCs were successfully mineralised into harmless CO2. The high photoactivity of BPRGO-1.0 was due to the high amount of oxygenated boron groups (OBGs) namely BC2O and BCO2 groups. The suitable amount of B dopants led to a higher hole carrier density and p-type conductivity. This had retarded the charge carrier recombination which improved the photocatalytic removal of VOCs. This work provides new insights of metal-free BPRGO photocatalyst for VOCs removal.
AB - The adverse health effects from indoor air pollutants such as volatile organic compounds (VOCs) has intrigued much attention. Photocatalytic oxidation (PCO) is a promising technique to degrade VOCs under ambient conditions. A metal-free photocatalyst, namely boron-doped photoreduced graphene oxide (BPRGO) was synthesized via a facile, scalable, and cost-effective UV irradiation method. The BPRGO photocatalyst managed to remove 80% of the VOCs (100 mg/m3 of methanol) within 6 h (0.283 h-1) under UV-A irradiation. Moreover, up to 91% of the VOCs were successfully mineralised into harmless CO2. The high photoactivity of BPRGO-1.0 was due to the high amount of oxygenated boron groups (OBGs) namely BC2O and BCO2 groups. The suitable amount of B dopants led to a higher hole carrier density and p-type conductivity. This had retarded the charge carrier recombination which improved the photocatalytic removal of VOCs. This work provides new insights of metal-free BPRGO photocatalyst for VOCs removal.
UR - https://www.scopus.com/pages/publications/85133804934
UR - https://www.scopus.com/pages/publications/85133804934#tab=citedBy
U2 - 10.1016/j.jece.2022.108047
DO - 10.1016/j.jece.2022.108047
M3 - Article
AN - SCOPUS:85133804934
SN - 2213-3437
VL - 10
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 4
M1 - 108047
ER -