Tunable Catalytic Performance of Single Pt Atom on Doped Graphene in Direct Dehydrogenation of Propane by Rational Doping: A Density Functional Theory Study
文献类型：期刊论文
| 作者 | Sun, XY; Han, P; Li, B; Zhao, Z; Zhao, Z (reprint author), Shenyang Normal Univ, Inst Catalysis Energy & Environm, Coll Chem & Chem Engn, Shenyang 110034, Liaoning, Peoples R China.; Zhao, Z (reprint author), China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China. |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2018-01-25 |
| 卷号 | 122期号:3页码:1570-1576 |
| 关键词 | h Bond Activation Nanostructured Carbon Catalysts Total-energy Calculations Augmented-wave Method Heterogeneous Catalysis 1st Principles Basis-set Platinum Reactivity Surfaces |
| ISSN号 | 1932-7447 |
| 英文摘要 | The catalytic reaction pathways and performance of supported single Pt atom on nitrogen- and boron-doped graphene in the direct dehydrogenation of propane (PDH) are investigated by using first principles calculations. The different dopants on graphene have distinct effects on the electronic structure of the supported Pt atom. The nitrogen on the support withdraws electrons from Pt, but boron donates electrons to Pt. Consequently, the d-band center of Pt atom is modified by either nitrogen or boron doping. The nitrogen doping shifts the d-band center of Pt atom closer to the Fermi level compared with the boron doping and the pristine ones. On the other hand, the d-band center has a significant influence on the C-H bond dissociation energy and reaction barrier. Therefore, better reactivity of Pt is found on the support with more nitrogen dopants as the d-band center is closer to the Fermi level. Also the calculated dissociation energy and the first C-H bond activation barrier obey the BEP rule. The different ratios between nitrogen and boron on the codoped graphene can continuously adjust the electronic structure of supported Pt and deliver the dissociation energy and reaction barrier in between the pure nitrogen- and boron-doped cases. Among various investigated supports, the graphene doped by pyridine nitrogen is predicted to be the most effective for enhancing Pt catalytic performance. The current work shows the promising catalytic performance of supported single Pt atom in PDH. More importantly, the tunable properties of the supported metal catalysts on the carbon materials are achieved by the rational doping, which provides a practical strategy for the catalyst optimization.; The catalytic reaction pathways and performance of supported single Pt atom on nitrogen- and boron-doped graphene in the direct dehydrogenation of propane (PDH) are investigated by using first principles calculations. The different dopants on graphene have distinct effects on the electronic structure of the supported Pt atom. The nitrogen on the support withdraws electrons from Pt, but boron donates electrons to Pt. Consequently, the d-band center of Pt atom is modified by either nitrogen or boron doping. The nitrogen doping shifts the d-band center of Pt atom closer to the Fermi level compared with the boron doping and the pristine ones. On the other hand, the d-band center has a significant influence on the C-H bond dissociation energy and reaction barrier. Therefore, better reactivity of Pt is found on the support with more nitrogen dopants as the d-band center is closer to the Fermi level. Also the calculated dissociation energy and the first C-H bond activation barrier obey the BEP rule. The different ratios between nitrogen and boron on the codoped graphene can continuously adjust the electronic structure of supported Pt and deliver the dissociation energy and reaction barrier in between the pure nitrogen- and boron-doped cases. Among various investigated supports, the graphene doped by pyridine nitrogen is predicted to be the most effective for enhancing Pt catalytic performance. The current work shows the promising catalytic performance of supported single Pt atom in PDH. More importantly, the tunable properties of the supported metal catalysts on the carbon materials are achieved by the rational doping, which provides a practical strategy for the catalyst optimization. |
| 学科主题 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | Liaoning Natural Science Foundation [201602676]; NSFC [91545117]; Special Fund of Liaoning Provincial Universities' Fundamental Scientific Research Projects [LQN201703]; Shenyang Normal University [51600308]; Engineering Technology Research Center of Catalysis for Energy and Environment; Major Platform for Science and Technology of the Universities in Liaoning Province; Liaoning Province Key Laboratory for Highly Efficient Conversion and Clean Utilization of Oil and Gas Resources; Engineering Research Center for Highly Efficient Conversion and Clean Use of Oil and Gas Resources of Liaoning Province |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79564]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Z (reprint author), Shenyang Normal Univ, Inst Catalysis Energy & Environm, Coll Chem & Chem Engn, Shenyang 110034, Liaoning, Peoples R China.; Zhao, Z (reprint author), China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, XY,Han, P,Li, B,et al. Tunable Catalytic Performance of Single Pt Atom on Doped Graphene in Direct Dehydrogenation of Propane by Rational Doping: A Density Functional Theory Study[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(3):1570-1576. |
| APA | Sun, XY,Han, P,Li, B,Zhao, Z,Zhao, Z ,&Zhao, Z .(2018).Tunable Catalytic Performance of Single Pt Atom on Doped Graphene in Direct Dehydrogenation of Propane by Rational Doping: A Density Functional Theory Study.JOURNAL OF PHYSICAL CHEMISTRY C,122(3),1570-1576. |
| MLA | Sun, XY,et al."Tunable Catalytic Performance of Single Pt Atom on Doped Graphene in Direct Dehydrogenation of Propane by Rational Doping: A Density Functional Theory Study".JOURNAL OF PHYSICAL CHEMISTRY C 122.3(2018):1570-1576. |
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来源：金属研究所
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