Rapid removal and decomposition of gaseous acetaldehyde by the thermo- and photo-catalysis of gold nanoparticle-loaded anatase titanium(IV) oxide

Nikawa, Tomoyuki; Naya, Shin‐ichi; Tada, Hiroaki

doi:10.1016/j.jcis.2015.06.016

Cited by 13 publications

(8 citation statements)

References 36 publications

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“…CH 3 CHO is known as one of several "sick house gases", found in furniture, decorating materials, and cigarettes, and is associated with the cooking and burning of fossil fuels at atmospheric conditions (20 • C, 1 atm) [1][2][3]. Moreover, CH 3 CHO is listed as a group 1 carcinogenic and a mutagenic priority pollutant [4][5][6][7][8][9]. In addition, low level exposure of acetaldehyde can cause respiratory issues, such as throat irritation, shortness of breath, eye irritation, and chest tightness [10].…”

Section: Introductionmentioning

confidence: 99%

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Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

et al. 2019

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The toxic nature of acetaldehyde renders its removal from a wide range of materials highly desirable. Removal of low-concentration acetaldehyde (a group 1 carcinogenic volatile organic compound) using an adsorbent of cellulose-based activated carbon fiber modified by amine functional group (A@CACF-H) is proposed, using 2 ppm of acetaldehyde balanced with N2/O2 (79/21% v/v) observed under continuous flow, with a total flow rate of 100 mL/min over 50 mg of A@CACF-H. The effective removal of the targeted acetaldehyde is achieved by introducing the functionalized amine at optimized content. The removal mechanism of A@CACF-H is elucidated using two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (2D-GC TOF-MS), indicating the efficacy of the proposed acetaldehyde removal method.

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Section: Introductionmentioning

confidence: 99%

“…In addition, low level exposure of acetaldehyde can cause respiratory issues, such as throat irritation, shortness of breath, eye irritation, and chest tightness [10]. Therefore, indoor CH 3 CHO content should be regulated and maintained below 0.03 ppm [9,11].…”

Section: Introductionmentioning

confidence: 99%

Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

et al. 2019

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“…[13][14][15] The complete degradation of gas-phase CH 3 CHO to CO 2 can be achieved with TiO 2 or Au-loaded TiO 2 under UV irradiation. 16,17 Recently, the visible light-induced photocatalytic removal of gas-phase CH 3 CHO was also investigated using visible light-responsive modied photocatalysts including zeolite/WO 3 -Pt hybrids, 18 …”

Section: 12mentioning

confidence: 99%

Visible light-induced photocatalytic degradation of gas-phase acetaldehyde with platinum/reduced titanium oxide-loaded carbon paper

Kim

Lee

et al. 2017

RSC Adv.

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Visible light-induced degradation of gas-phase acetaldehyde (CH 3 CHO) is investigated using O-deficient reduced TiO 2Àx -loaded carbon paper. The carbon paper is synthesized by the pyrolysis of a filter paper, and the reduced TiO 2Àx is prepared by the magnesiothermic reduction of commercial anatase TiO 2 . The surface areas of the non-carbonized filter paper and carbon papers obtained by carbonization at 400, 600, 800, and 1000 C are 4. (l > 420 nm), attributed to the efficient adsorption of gas-phase CH 3 CHO by the carbon paper and the rapid and complete degradation of CH 3 CHO to CO 2 by the active reduced TiO 2Àx . This strongly suggests that the reduced TiO 2Àx -loaded carbon paper is an efficient composite photocatalyst for the visible light-induced photocatalytic degradation of gas-phase CH 3 CHO.

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“…Although the trapping effect of excited electrons on metal nanoparticles transferred from the conduction band (CB) of a metal oxide semiconductor has been widely accepted, − excited electrons owing to localized surface plasmon resonance (LSPR) transferring to metal oxides , and/or adsorbed molecules have also been reported. Recently, the origins of the photocatalytic reaction steps have been investigated: consecutive reaction mechanism (1) to reduce CO 2 to CO on ZrO 2 owing to charge separation at the band gap (BG) and (2) subsequent H 2 and/or H 2 O activation over the Ag/Au nanoparticle surface owing to heat converted from LSPR spilling over reactive H species to the CO 2 reduction sites over ZrO 2 . , Using Ni nanoparticles, the subsequent reaction (2′) consisted of further reduction steps of CO to methane (CH 4 ) owing to heat converted from absorbed light energy …”

Section: Introductionmentioning

confidence: 99%

Local Silver Site Temperature Critically Reflected Partial and Complete Photooxidation of Ethanol Using Ag–TiO₂ as Revealed by Extended X-ray Absorption Fine Structure Debye–Waller Factor

et al. 2021

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The critical factors in choosing the reaction pathway for photocatalysis are often unclear. In this study, for a typical Ag–TiO2 photocatalyst, the control factors of partial and complete oxidation of ethanol were investigated using kinetics, UV–visible and emission spectroscopy, and silver K-edge extended X-ray absorption fine structure. Low concentrations of O2-derived intermediate species that were not detected by curve-fitting analysis could be monitored under the photocatalytic conditions based on the local temperature of Ag sites provided by the Debye–Waller factor and the correlated Debye model. The site temperature monitoring was extended to Ag nanoparticles growing from 0.5 to 3.6 nm under photocatalytic reaction conditions. The Ag site temperature reached 404 K under reductive conditions to dehydrogenate ethanol into acetaldehyde, whereas it was 363–368 K under oxidative conditions owing to O2-derived species forming CO2, CH4, and H2O to suppress localized surface plasmon resonance. Under UV light, partial ethanol oxidation to acetaldehyde and O2 activation for complete oxidation to CO2 and H2O proceeded over TiO2. However, under visible light, the C–C bond cleavage to CO2 and CH4 and complete oxidation to CO2 and H2O combined with the O2-derived species transferred from the TiO2 surface proceeded over Ag0 nanoparticles.

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Rapid removal and decomposition of gaseous acetaldehyde by the thermo- and photo-catalysis of gold nanoparticle-loaded anatase titanium(IV) oxide

Cited by 13 publications

References 36 publications

Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

Visible light-induced photocatalytic degradation of gas-phase acetaldehyde with platinum/reduced titanium oxide-loaded carbon paper

Local Silver Site Temperature Critically Reflected Partial and Complete Photooxidation of Ethanol Using Ag–TiO₂ as Revealed by Extended X-ray Absorption Fine Structure Debye–Waller Factor

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Rapid removal and decomposition of gaseous acetaldehyde by the thermo- and photo-catalysis of gold nanoparticle-loaded anatase titanium(IV) oxide

Cited by 13 publications

References 36 publications

Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

Behaviors of Cellulose-Based Activated Carbon Fiber for Acetaldehyde Adsorption at Low Concentration

Visible light-induced photocatalytic degradation of gas-phase acetaldehyde with platinum/reduced titanium oxide-loaded carbon paper

Local Silver Site Temperature Critically Reflected Partial and Complete Photooxidation of Ethanol Using Ag–TiO2 as Revealed by Extended X-ray Absorption Fine Structure Debye–Waller Factor

Contact Info

Product

Resources

About

Local Silver Site Temperature Critically Reflected Partial and Complete Photooxidation of Ethanol Using Ag–TiO₂ as Revealed by Extended X-ray Absorption Fine Structure Debye–Waller Factor