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First-principles exploration of MgTi2O5 and MgV2O5 for CO2 capture and conversion

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Abstract
First-principles calculations were done to reveal the properties of MgTi2O5 and MgV2O5 for CO2 capture. The highest temperatures of MgTi2O5 and MgV2O5 for CO2 capture at different partial pressures (i.e., 0.1, 1, and 10 bar) were determined. CO2 was absorbed at higher temperatures by MgV2O5 than by MgTi2O5 at each partial pressure. Furthermore, the electronic properties of V-doped MgTi2O5 were theoretically examined to assess its potential use for photocatalytic CO2 conversion. The electronic properties of MgTi2O5 were found to be changed after V doping. Specifically, the band gap of MgTi2O5 was 2.75 eV and that of V-doped MgTi2O5 in the spin-up (down) channel was 0.48 (2.73 eV), showing the band gap decrease upon V doping.
Author(s)
강성구
Issued Date
2021
Type
Article
Keyword
Carbon dioxideCarbon sequestrationCO2 capture and conversionConversionDopingEnergy gapmetal oxidesMgV2O5Partial pressurePrinciples
DOI
10.1002/qua.26637
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9228
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_proquest_journals_2511889948&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,First-principles%20exploration%20of%20MgTi2O5%20and%20MgV2O5%20for%20CO2%20capture%20and%20conversion&offset=0&pcAvailability=true
Publisher
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
Location
미국
Language
영어
ISSN
0020-7608
Citation Volume
121
Citation Number
11
Citation Start Page
26637
Citation End Page
26637
Appears in Collections:
Engineering > Chemical Engineering
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