Plasmon-Enhanced Sub-Bandgap Photocatalysis via Triplet-Triplet Annihilation Upconversion for Volatile Organic Compound Degradation

Hyoung Il Kim; Seunghyun Weon; Homan Kang; Anna L. Hagstrom; Oh Seok Kwon; Yoon Sik Lee; Wonyong Choi; Jae Hong Kim

doi:10.1021/acs.est.6b02729

Plasmon-Enhanced Sub-Bandgap Photocatalysis via Triplet-Triplet Annihilation Upconversion for Volatile Organic Compound Degradation

Hyoung Il Kim, Seunghyun Weon, Homan Kang, Anna L. Hagstrom, Oh Seok Kwon, Yoon Sik Lee, Wonyong Choi, Jae Hong Kim

Department of Civil and Environmental Engineering

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

53 Citations (Scopus)

Abstract

This study demonstrates the first reported photocatalytic decomposition of an indoor air pollutant, acetaldehyde, using low-energy, sub-bandgap photons harnessed through sensitized triplet-triplet annihilation (TTA) upconversion (UC). To utilize low-intensity noncoherent indoor light and maximize photocatalytic activity, we designed a plasmon-enhanced sub-bandgap photocatalyst device consisting of two main components: (1) TTA-UC rubbery polymer films containing broad-band plasmonic particles (Ag-SiO₂) to upconvert sub-bandgap photons, and (2) nanodiamond (ND)-loaded WO₃ as a visible-light photocatalyst composite. Effective decomposition of acetaldehyde was achieved using ND/WO₃ (E_g = 2.8 eV) coupled with TTA-UC polymer films that emit blue photons (λ_Em = 425 nm, 2.92 eV) upconverted from green photons (λ_Ex = 532 nm, 2.33 eV), which are wasted in most environmental photocatalysis. The overall photocatalytic efficiency was amplified by the broad-band surface plasmon resonance of AgNP-SiO₂ particles incorporated into the TTA-UC films.

Original language	English
Pages (from-to)	11184-11192
Number of pages	9
Journal	Environmental Science and Technology
Volume	50
Issue number	20
DOIs	https://doi.org/10.1021/acs.est.6b02729
Publication status	Published - 2016 Oct 18

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation (Grant CBET-1335934) and by the Global Research Laboratory (GRL) Program (Grant NRF-2014K1A1A2041044) funded by the Korean government (MSIP) through NRF.

Publisher Copyright:
© 2016 American Chemical Society.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry

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10.1021/acs.est.6b02729

Cite this

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title = "Plasmon-Enhanced Sub-Bandgap Photocatalysis via Triplet-Triplet Annihilation Upconversion for Volatile Organic Compound Degradation",

abstract = "This study demonstrates the first reported photocatalytic decomposition of an indoor air pollutant, acetaldehyde, using low-energy, sub-bandgap photons harnessed through sensitized triplet-triplet annihilation (TTA) upconversion (UC). To utilize low-intensity noncoherent indoor light and maximize photocatalytic activity, we designed a plasmon-enhanced sub-bandgap photocatalyst device consisting of two main components: (1) TTA-UC rubbery polymer films containing broad-band plasmonic particles (Ag-SiO2) to upconvert sub-bandgap photons, and (2) nanodiamond (ND)-loaded WO3 as a visible-light photocatalyst composite. Effective decomposition of acetaldehyde was achieved using ND/WO3 (Eg = 2.8 eV) coupled with TTA-UC polymer films that emit blue photons (λEm = 425 nm, 2.92 eV) upconverted from green photons (λEx = 532 nm, 2.33 eV), which are wasted in most environmental photocatalysis. The overall photocatalytic efficiency was amplified by the broad-band surface plasmon resonance of AgNP-SiO2 particles incorporated into the TTA-UC films.",

author = "Kim, {Hyoung Il} and Seunghyun Weon and Homan Kang and Hagstrom, {Anna L.} and Kwon, {Oh Seok} and Lee, {Yoon Sik} and Wonyong Choi and Kim, {Jae Hong}",

note = "Funding Information: This work was supported by the National Science Foundation (Grant CBET-1335934) and by the Global Research Laboratory (GRL) Program (Grant NRF-2014K1A1A2041044) funded by the Korean government (MSIP) through NRF. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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doi = "10.1021/acs.est.6b02729",

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AU - Kim, Hyoung Il

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AU - Hagstrom, Anna L.

AU - Kwon, Oh Seok

AU - Lee, Yoon Sik

AU - Choi, Wonyong

AU - Kim, Jae Hong

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PY - 2016/10/18

Y1 - 2016/10/18

N2 - This study demonstrates the first reported photocatalytic decomposition of an indoor air pollutant, acetaldehyde, using low-energy, sub-bandgap photons harnessed through sensitized triplet-triplet annihilation (TTA) upconversion (UC). To utilize low-intensity noncoherent indoor light and maximize photocatalytic activity, we designed a plasmon-enhanced sub-bandgap photocatalyst device consisting of two main components: (1) TTA-UC rubbery polymer films containing broad-band plasmonic particles (Ag-SiO2) to upconvert sub-bandgap photons, and (2) nanodiamond (ND)-loaded WO3 as a visible-light photocatalyst composite. Effective decomposition of acetaldehyde was achieved using ND/WO3 (Eg = 2.8 eV) coupled with TTA-UC polymer films that emit blue photons (λEm = 425 nm, 2.92 eV) upconverted from green photons (λEx = 532 nm, 2.33 eV), which are wasted in most environmental photocatalysis. The overall photocatalytic efficiency was amplified by the broad-band surface plasmon resonance of AgNP-SiO2 particles incorporated into the TTA-UC films.

AB - This study demonstrates the first reported photocatalytic decomposition of an indoor air pollutant, acetaldehyde, using low-energy, sub-bandgap photons harnessed through sensitized triplet-triplet annihilation (TTA) upconversion (UC). To utilize low-intensity noncoherent indoor light and maximize photocatalytic activity, we designed a plasmon-enhanced sub-bandgap photocatalyst device consisting of two main components: (1) TTA-UC rubbery polymer films containing broad-band plasmonic particles (Ag-SiO2) to upconvert sub-bandgap photons, and (2) nanodiamond (ND)-loaded WO3 as a visible-light photocatalyst composite. Effective decomposition of acetaldehyde was achieved using ND/WO3 (Eg = 2.8 eV) coupled with TTA-UC polymer films that emit blue photons (λEm = 425 nm, 2.92 eV) upconverted from green photons (λEx = 532 nm, 2.33 eV), which are wasted in most environmental photocatalysis. The overall photocatalytic efficiency was amplified by the broad-band surface plasmon resonance of AgNP-SiO2 particles incorporated into the TTA-UC films.

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Plasmon-Enhanced Sub-Bandgap Photocatalysis via Triplet-Triplet Annihilation Upconversion for Volatile Organic Compound Degradation

Abstract

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