Intrinsic Descriptors for Coordination Environment and Synergistic Effects of Metal and Environment in Single-Atom-Catalyzed Carbon Dioxide Electroreduction

2021 ◽  
Author(s):  
Hao Yuan ◽  
Zhenyu Li
Keyword(s):  
Carbon Dioxide ◽  
Synergistic Effects ◽  
Single Atom ◽  
Coordination Environment ◽  
Carbon Dioxide Electroreduction

Quasi-Double-Star Nickel and Iron Active Sites for High-Efficient Carbon Dioxide Electroreduction

2021 ◽  
Author(s):  
Ting Zhang ◽  
Xu Han ◽  
Hong Liu ◽  
Martí Biset-Peiró ◽  
Xuan Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Active Sites ◽  
Double Star ◽  
Single Atom ◽  
Practical Application ◽  
High Efficient ◽  
Iron Active Sites ◽  
Carbon Dioxide Electroreduction

Although the Faraday efficiencies (FEs) obtained on most of the Ni based single-atom catalysts (Ni-N-C) are satisfactory (generally > 90 %) for electrochemical transfer CO2 to CO, the practical application...

Tunable Carbon Surface from Mono- to Multi-Metallic Single Atoms

2020 ◽  
Author(s):  
Weihong Lai ◽  
Heng Wang ◽  
Quan jiang ◽  
Zichao Yan ◽  
Hanwen Liu ◽  
...  
Keyword(s):  
Synergistic Effects ◽  
Structural Evolution ◽  
Charge Compensation ◽  
Catalytic Reactions ◽  
Single Atom ◽  
Carbon Surface ◽  
Hydrogen Electrode ◽  
Single Atoms ◽  
Mass Activity ◽  
Co Doped

<p>Herein, we develop a non-selective charge compensation strategy to prepare multi-single-atom doped carbon (MSAC) in which a sodium p-toluenesulfonate (PTS-Na) doped polypyrrole (S-PPy) polymer is designed to anchor discretionary mixtures of multiple metal cations, including iron (Fe<sup>3+</sup>), cobalt (Co<sup>3+</sup>), ruthenium (Ru<sup>3+</sup>), palladium (Pd<sup>2+</sup>), indium (In<sup>3+</sup>), iridium (Ir<sup>2+</sup>), and platinum (Pt<sup>2+</sup>) . As illustrated in Figure 1, the carbon surface can be tuned with different level of compositional complexities, including unary Pt<sub>1</sub>@NC, binary (MSAC-2, (PtFe)<sub>1</sub>@NC), ternary (MSAC-3, (PtFeIr)<sub>1</sub>@NC), quaternary (MSAC-4, (PtFeIrRu)<sub>1</sub>@NC), quinary (MSAC-5, (PtFeIrRuCo)<sub>1</sub>@NC), senary (MSAC-6, (PtFeIrRuCoPd)<sub>1</sub>@NC), and septenary (MSAC-7, (PtFeIrRuCoPdIn)<sub>1</sub>@NC) samples. The structural evolution of carbon surface dictates the activities of both ORR and HER. The senary MSAC-6 achieves the ORR mass activity of 18.1 A·mg<sub>metal</sub><sup>-1</sup> at 0.9 V (Vs reversible hydrogen electrode (RHE)) over 30K cycles, which is 164 times higher than that of commercial Pt/C. The quaternary MSAC-4 presented a comparable HER catalytic capability with that of Pt/C. These results indicate that the highly complexed carbon surface can enhance its ability over general electrochemical catalytic reactions. The mechanisms regarding of the ORR and HER activities of the alternated carbon surface are also theoretically and experimentally investigated in this work, showing that the synergistic effects amongst the co-doped atoms can activate or inactivate certain single-atom sites.</p>

Nitrogen and boron co‐doped carbon spheres for carbon dioxide electroreduction

ChemNanoMat ◽  
2021 ◽  
Author(s):  
Chunfeng Cheng ◽  
Jiaqi Shao ◽  
Pengfei Wei ◽  
Yanpeng Song ◽  
Hefei Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Spheres ◽  
Co Doped ◽  
Carbon Dioxide Electroreduction

Synergistic Effects for Enhanced Catalysis in a Dual Single-Atom Catalyst

ACS Catalysis ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1952-1961
Author(s):  
Junhong Fu ◽  
Jinhu Dong ◽  
Rui Si ◽  
Keju Sun ◽  
Junying Zhang ◽  
...  
Keyword(s):  
Synergistic Effects ◽  
Single Atom

Oxygen defects-stabilized heterogeneous single atom catalysts: preparation, property and catalytic application

2021 ◽  
Author(s):  
Lei Zhang ◽  
Xiu-Fei Zhao ◽  
Zhengqiu Yuan ◽  
Ming Wu ◽  
Hu Zhou
Keyword(s):  
Electronic Structure ◽  
Single Atom ◽  
Metal Species ◽  
Coordination Environment ◽  
Chemical Catalysis ◽  
Catalytic Application ◽  
Oxygen Defects ◽  
Catalysts Preparation

Single atom catalysts (SACs) show outstanding activity and selectivity in chemical catalysis owing to its unique electronic structure and unsaturated coordination environment, in which every dispersed metal species on support...

Partially oxidized atomic cobalt layers for carbon dioxide electroreduction to liquid fuel

Nature ◽  
2016 ◽  
Vol 529 (7584) ◽  
pp. 68-71 ◽  
Author(s):  
Shan Gao ◽  
Yue Lin ◽  
Xingchen Jiao ◽  
Yongfu Sun ◽  
Qiquan Luo ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Liquid Fuel ◽  
Carbon Dioxide Electroreduction
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