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CO oxidation on MXe...
CO oxidation on MXene (Mo2CS2) supported single-atom catalyst : A termolecular Eley-Rideal mechanism
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- Talib, Shamraiz Hussain (author)
- Henan Normal Univ, Sch Phys, Xinxiang 453007, Peoples R China.;Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.;Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China.
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- Lu, Zhansheng (author)
- Henan Normal Univ, Sch Phys, Xinxiang 453007, Peoples R China.
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- Bashir, Beenish (author)
- Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China.
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- Hussain, Sajjad (author)
- Minhaj Univ, Sch Chem, Lahore 54000, Pakistan.
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- Ahmad, Khalil (author)
- Mirpur Univ Sci & Technol MUST, Dept Chem, Mirpur 10250, Pakistan.
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- Khan, Salahuddin (author)
- King Saud Univ, Coll Engn, POB 800, Riyadh 11421, Saudi Arabia.
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- Haider, Sajjad (author)
- King Saud Univ, Coll Engn, Chem Engn Dept, POB 800, Riyadh 11421, Saudi Arabia.
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- Yang, Zongxian (author)
- Henan Normal Univ, Sch Phys, Xinxiang 453007, Peoples R China.
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- Hermansson, Kersti, Professor (author)
- Uppsala universitet,Strukturkemi
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- Li, Jun (author)
- Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.;Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China.;Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China.
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Henan Normal Univ, Sch Phys, Xinxiang 453007, Peoples R China;Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.;Tsinghua Univ, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China. Henan Normal Univ, Sch Phys, Xinxiang 453007, Peoples R China. (creator_code:org_t)
- Elsevier, 2022
- 2022
- English.
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In: Chinese Chemical Letters. - : Elsevier. - 1001-8417 .- 1878-5964. ; 34:2
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Finding transition metal catalysts for effective catalytic conversion of CO to CO2 has attracted much attention. MXene as a new 2D layered material of early transition metal carbides, nitrides, and carbo-nitrides is a robust support for achoring metal atoms. In this study, the electronic structure, geometries, thermodynamic stability, and catalytic activity of MXene (Mo2CS2) supported single noble metal atoms (NM = Ru, Rh, Pd, Ir, Pt and Au) have been systematically examined using first-principles calculations and ab initio molecular dynamic (AIMD) simulations. First, AIMD simulations and phonon spectra demonstrate the dynamic and thermal stabilities of Mo2CS2 monolayer. Three likely reaction pathways, LangmuirHinshelwood (LH), Eley-Rideal (ER), and Termolecular Eley-Rideal (TER) for CO oxidation on the Ru1- and Ir1 @Mo2CS2 SACs, have been studied in detail. It is found that CO oxidation mainly proceeds via the TER mechanism under mild reaction conditions. The corresponding rate-determining steps are the dissociation of the intermediate (OCO-Ru1-OCO) and formation of OCO-Ir1-OCO intermediate. The downshift d-band center of Ru1- and Ir1@Mo2CS2 help to enhance activity and improve catalytst stability. Moreover, a microkinetic study predicts a maximum CO oxidation rate of 4.01 x 10 2 s-1 and 4.15 x 10 3 s-1 (298.15 K) following the TER pathway for the Ru1- and Ir1 @Mo2CS2 catalysts, respectively. This work provides guideline for fabricating and designing highly efficient SACs with superb catalyts using MXene materials.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- CO oxidation
- Quantum chemical study
- 2D MXene monolayer
- M 1 @Mo 2 CS 2
- Termolecular Eley-Rideal
- Single-atom catalysis
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Talib, Shamraiz ...
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Lu, Zhansheng
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Bashir, Beenish
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Hussain, Sajjad
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Ahmad, Khalil
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Khan, Salahuddin
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Haider, Sajjad
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Yang, Zongxian
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Hermansson, Kers ...
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Li, Jun
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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Chinese Chemical ...
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Uppsala University