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Oxidation activity restoration of diesel particulate matter by aging in air

Gao, Jianbing, Ma, Chaochen, Tian, Guohong, Chen, Junyan, Xing, Shikai and Huang, Liyong (2018) Oxidation activity restoration of diesel particulate matter by aging in air Energy & Fuels.

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Abstract

Diesel particulate matter (PM) was collected at different tailpipe positions where the sampling temperature was different. The PM samples were pre-treated 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 (HRTEM) images. The adsorption of oxygen-containing functional groups (carbonyl and hydroxy) and organic compounds were evidenced through Fourier transform infrared spectroscopy (FTIR) and Raman parameter AD3/AG. The crystallite size calculated using Raman parameter decreased slightly after aging in air.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Gao, Jianbingj.gao@surrey.ac.ukUNSPECIFIED
Ma, ChaochenUNSPECIFIEDUNSPECIFIED
Tian, Guohongg.tian@surrey.ac.ukUNSPECIFIED
Chen, JunyanUNSPECIFIEDUNSPECIFIED
Xing, ShikaiUNSPECIFIEDUNSPECIFIED
Huang, LiyongUNSPECIFIEDUNSPECIFIED
Date : 2018
Identification Number : 10.1021/acs.energyfuels.7b03404
Copyright Disclaimer : Copyright © 2018 American Chemical Society
Uncontrolled Keywords : Diesel particulate matter; Aging in air; Oxidation activity restoration; Physicochemical properties
Depositing User : Clive Harris
Date Deposited : 19 Jan 2018 14:14
Last Modified : 19 Jan 2018 14:14
URI: http://epubs.surrey.ac.uk/id/eprint/845648

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