Oxidation Activity Restoration of Diesel Particulate Matter by Aging in Air

Jianbing Gao; Chaochen Ma; Guohong Tian; Junyan Chen; Shikai Xing; Liyong Huang

doi:10.1021/acs.energyfuels.7b03404

Oxidation Activity Restoration of Diesel Particulate Matter by Aging in Air

Jianbing Gao^*, Chaochen Ma, Guohong Tian, Junyan Chen, Shikai Xing, Liyong Huang

^*Corresponding author for this work

School of Mechanical Engineering

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

23 Citations (Scopus)

Abstract

Diesel particulate matter (PM) was collected at different tailpipe positions where the sampling temperature was different. The PM samples were pretreated in air at high temperature until 40% mass loss. Then, the partially oxidized PM samples were aged in air for 40 days, and the physicochemical properties of partially oxidized PM before and after aging in air were tested. The results showed that the oxidation activity of partially oxidized PM was appreciably restored by aging in air. The morphology, diameter distribution of primary particles, and nanostructures of partially oxidized PM changed slightly after aging in air. The amorphous carbon adsorbing on PM surface were faintly observed through high-resolution transmission electron microscope images. The adsorption of oxygen-containing functional groups (carbonyl and hydroxy) and organic compounds were evidenced through Fourier transform infrared spectroscopy and Raman parameters A_D3/A_G. The crystallite size calculated using Raman parameter decreased slightly after aging in air.

Original language	English
Pages (from-to)	2450-2457
Number of pages	8
Journal	Energy and Fuels
Volume	32
Issue number	2
DOIs	https://doi.org/10.1021/acs.energyfuels.7b03404
Publication status	Published - 15 Feb 2018

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10.1021/acs.energyfuels.7b03404

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title = "Oxidation Activity Restoration of Diesel Particulate Matter by Aging in Air",

abstract = "Diesel particulate matter (PM) was collected at different tailpipe positions where the sampling temperature was different. The PM samples were pretreated in air at high temperature until 40% mass loss. Then, the partially oxidized PM samples were aged in air for 40 days, and the physicochemical properties of partially oxidized PM before and after aging in air were tested. The results showed that the oxidation activity of partially oxidized PM was appreciably restored by aging in air. The morphology, diameter distribution of primary particles, and nanostructures of partially oxidized PM changed slightly after aging in air. The amorphous carbon adsorbing on PM surface were faintly observed through high-resolution transmission electron microscope images. The adsorption of oxygen-containing functional groups (carbonyl and hydroxy) and organic compounds were evidenced through Fourier transform infrared spectroscopy and Raman parameters AD3/AG. The crystallite size calculated using Raman parameter decreased slightly after aging in air.",

author = "Jianbing Gao and Chaochen Ma and Guohong Tian and Junyan Chen and Shikai Xing and Liyong Huang",

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doi = "10.1021/acs.energyfuels.7b03404",

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T1 - Oxidation Activity Restoration of Diesel Particulate Matter by Aging in Air

AU - Gao, Jianbing

AU - Ma, Chaochen

AU - Tian, Guohong

AU - Chen, Junyan

AU - Xing, Shikai

AU - Huang, Liyong

PY - 2018/2/15

Y1 - 2018/2/15

N2 - Diesel particulate matter (PM) was collected at different tailpipe positions where the sampling temperature was different. The PM samples were pretreated in air at high temperature until 40% mass loss. Then, the partially oxidized PM samples were aged in air for 40 days, and the physicochemical properties of partially oxidized PM before and after aging in air were tested. The results showed that the oxidation activity of partially oxidized PM was appreciably restored by aging in air. The morphology, diameter distribution of primary particles, and nanostructures of partially oxidized PM changed slightly after aging in air. The amorphous carbon adsorbing on PM surface were faintly observed through high-resolution transmission electron microscope images. The adsorption of oxygen-containing functional groups (carbonyl and hydroxy) and organic compounds were evidenced through Fourier transform infrared spectroscopy and Raman parameters AD3/AG. The crystallite size calculated using Raman parameter decreased slightly after aging in air.

AB - Diesel particulate matter (PM) was collected at different tailpipe positions where the sampling temperature was different. The PM samples were pretreated in air at high temperature until 40% mass loss. Then, the partially oxidized PM samples were aged in air for 40 days, and the physicochemical properties of partially oxidized PM before and after aging in air were tested. The results showed that the oxidation activity of partially oxidized PM was appreciably restored by aging in air. The morphology, diameter distribution of primary particles, and nanostructures of partially oxidized PM changed slightly after aging in air. The amorphous carbon adsorbing on PM surface were faintly observed through high-resolution transmission electron microscope images. The adsorption of oxygen-containing functional groups (carbonyl and hydroxy) and organic compounds were evidenced through Fourier transform infrared spectroscopy and Raman parameters AD3/AG. The crystallite size calculated using Raman parameter decreased slightly after aging in air.

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Oxidation Activity Restoration of Diesel Particulate Matter by Aging in Air

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