Harnessing Waste Heat from Indoor lamps for Sustainable Thermocatalytic Mineralization of Acetaldehyde using Platinized TiO2

Minhyung Lee; Heewon Yim; Bupmo Kim; Suho Kim; Wonyong Choi; Wooyul Kim; Hyoung il Kim

doi:10.1016/j.chemosphere.2022.136350

Harnessing Waste Heat from Indoor lamps for Sustainable Thermocatalytic Mineralization of Acetaldehyde using Platinized TiO₂

Minhyung Lee, Heewon Yim, Bupmo Kim, Suho Kim, Wonyong Choi, Wooyul Kim, Hyoung il Kim

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This study demonstrates the first reported thermocatalytic oxidation of an indoor volatile organic compound (VOC), acetaldehyde, by harnessing the waste-heat energy from indoor light sources (e.g., halogen lamps) without additional energy inputs. With an optimal Pt–TiO₂ catalyst, the designed catalyst-coated lampshade was successfully activated under waste-heat energy (∼120 °C) and achieved the complete mineralization of CH₃CHO into CO₂ (k = 0.02 min⁻¹). The catalytic activity of Pt–TiO₂ was extremely dependent on its preparation method which greatly influenced the characteristics (e.g., oxidation state and size) of Pt. The thermocatalytic oxidation mechanism of CH₃CHO over Pt–TiO₂ was investigated, which revealed that O₂ and H₂O sources play vital roles. Although Pt is an expensive noble metal, the thermocatalytic process on the Pt–TiO₂-coated lampshade without additional energy, along with its outstanding activity, can offset the high material cost. The proposed strategy offers a sustainable and feasible method for the degradation of indoor VOCs.

Original language	English
Article number	136350
Journal	Chemosphere
Volume	308
DOIs	https://doi.org/10.1016/j.chemosphere.2022.136350
Publication status	Published - 2022 Dec

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea ( 2021R1C1C1007706 , 2022R1A4A1021692 ), the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 21CTAP-C157292-02 ), the Ecological Imitation-based Environmental Pollution Management Technology Development Project ( 2019002790008 ) funded by the Korea Ministry of Environment (MOE), and development of nano product performance, and safety evaluation technology and company support project through the Ministry of Trade, Industry and Energy (MOTIE) (Project No. 20015633 ).

Publisher Copyright:
© 2022

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
Chemistry(all)
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.chemosphere.2022.136350

Cite this

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title = "Harnessing Waste Heat from Indoor lamps for Sustainable Thermocatalytic Mineralization of Acetaldehyde using Platinized TiO2",

abstract = "This study demonstrates the first reported thermocatalytic oxidation of an indoor volatile organic compound (VOC), acetaldehyde, by harnessing the waste-heat energy from indoor light sources (e.g., halogen lamps) without additional energy inputs. With an optimal Pt–TiO2 catalyst, the designed catalyst-coated lampshade was successfully activated under waste-heat energy (∼120 °C) and achieved the complete mineralization of CH3CHO into CO2 (k = 0.02 min−1). The catalytic activity of Pt–TiO2 was extremely dependent on its preparation method which greatly influenced the characteristics (e.g., oxidation state and size) of Pt. The thermocatalytic oxidation mechanism of CH3CHO over Pt–TiO2 was investigated, which revealed that O2 and H2O sources play vital roles. Although Pt is an expensive noble metal, the thermocatalytic process on the Pt–TiO2-coated lampshade without additional energy, along with its outstanding activity, can offset the high material cost. The proposed strategy offers a sustainable and feasible method for the degradation of indoor VOCs.",

author = "Minhyung Lee and Heewon Yim and Bupmo Kim and Suho Kim and Wonyong Choi and Wooyul Kim and Kim, {Hyoung il}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea ( 2021R1C1C1007706 , 2022R1A4A1021692 ), the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 21CTAP-C157292-02 ), the Ecological Imitation-based Environmental Pollution Management Technology Development Project ( 2019002790008 ) funded by the Korea Ministry of Environment (MOE), and development of nano product performance, and safety evaluation technology and company support project through the Ministry of Trade, Industry and Energy (MOTIE) (Project No. 20015633 ). Publisher Copyright: {\textcopyright} 2022",

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AU - Lee, Minhyung

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AU - Kim, Suho

AU - Choi, Wonyong

AU - Kim, Wooyul

AU - Kim, Hyoung il

N1 - Funding Information: This work was supported by the National Research Foundation of Korea ( 2021R1C1C1007706 , 2022R1A4A1021692 ), the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 21CTAP-C157292-02 ), the Ecological Imitation-based Environmental Pollution Management Technology Development Project ( 2019002790008 ) funded by the Korea Ministry of Environment (MOE), and development of nano product performance, and safety evaluation technology and company support project through the Ministry of Trade, Industry and Energy (MOTIE) (Project No. 20015633 ). Publisher Copyright: © 2022

PY - 2022/12

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N2 - This study demonstrates the first reported thermocatalytic oxidation of an indoor volatile organic compound (VOC), acetaldehyde, by harnessing the waste-heat energy from indoor light sources (e.g., halogen lamps) without additional energy inputs. With an optimal Pt–TiO2 catalyst, the designed catalyst-coated lampshade was successfully activated under waste-heat energy (∼120 °C) and achieved the complete mineralization of CH3CHO into CO2 (k = 0.02 min−1). The catalytic activity of Pt–TiO2 was extremely dependent on its preparation method which greatly influenced the characteristics (e.g., oxidation state and size) of Pt. The thermocatalytic oxidation mechanism of CH3CHO over Pt–TiO2 was investigated, which revealed that O2 and H2O sources play vital roles. Although Pt is an expensive noble metal, the thermocatalytic process on the Pt–TiO2-coated lampshade without additional energy, along with its outstanding activity, can offset the high material cost. The proposed strategy offers a sustainable and feasible method for the degradation of indoor VOCs.

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