Getting Insights into the Temperature-Specific Active Sites on Platinum Nanoparticles for CO Oxidation: A Combined in Situ Spectroscopic and ab Initio Density Functional Theory Study
文献类型：期刊论文
| 作者 | Liu, AN; Liu, X; Liu, LC; Pu, Y; Guo, K; Tan, W; Gao, S; Luo, YD; Yu, SH; Si, R |
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2019 |
| 卷号 | 9期号:9页码:7759-7768 |
| 关键词 | TOTAL-ENERGY CALCULATIONS ATOMIC-SCALE VIEW KINETIC OSCILLATIONS SINGLE-ATOM CATALYTIC-OXIDATION CARBON-MONOXIDE METAL ATOMS CHEMISORPTION CRYSTALS BEHAVIOR |
| ISSN号 | 2155-5435 |
| DOI | 10.1021/acscatal.9b02552 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The geometrical structure of metal nanoparticles has been found to be a critical factor that can influence the catalytic behavior significantly. For typical metal nanoparticles, the exposed surface atoms usually exhibit different coordination environments among different surface sites. By in situ diffuse reflectance Fourier transform infrared spectroscopy, kinetic measurements, and DFT calculations, it has been found that, for Pt-catalyzed CO oxidation at different temperatures, CO reacts preferentially on different surface sites of Pt nanoparticles.. At low temperatures, Pt species with higher coordination numbers (>= 7-fold coordinated) present higher catalytic activities due to the lower CO adsorption energy. However, at high temperatures, especially beyond the ignition temperature, Pt species with lower coordination numbers (<= 6-fold coordinated) play a predominant role because of their better capability for O-2 activation. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32071]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Nanjing Univ, Key Lab Mesoscop Chem, MOE, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China; 2.Nanjing Univ, Jiangsu Key Lab Vehicle Emiss Control, Sch Environm, Ctr Modern Anal, Nanjing 210093, Jiangsu, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China; 4.Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China; 5.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China; 6.Univ Politecn Valencia, Inst Tecnol Quim, CSIC, Ave Naranjos S-N, E-46022 Valencia, Spain; 7.Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Hubei, Peoples R China; 8.Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, AN,Liu, X,Liu, LC,et al. Getting Insights into the Temperature-Specific Active Sites on Platinum Nanoparticles for CO Oxidation: A Combined in Situ Spectroscopic and ab Initio Density Functional Theory Study[J]. ACS CATALYSIS,2019,9(9):7759-7768. |
| APA | Liu, AN.,Liu, X.,Liu, LC.,Pu, Y.,Guo, K.,...&Dong, L.(2019).Getting Insights into the Temperature-Specific Active Sites on Platinum Nanoparticles for CO Oxidation: A Combined in Situ Spectroscopic and ab Initio Density Functional Theory Study.ACS CATALYSIS,9(9),7759-7768. |
| MLA | Liu, AN,et al."Getting Insights into the Temperature-Specific Active Sites on Platinum Nanoparticles for CO Oxidation: A Combined in Situ Spectroscopic and ab Initio Density Functional Theory Study".ACS CATALYSIS 9.9(2019):7759-7768. |
入库方式： OAI收割
来源：上海应用物理研究所
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