Boron Phosphide Nanoparticles : A Nonmetal Catalyst for High‐Selectivity Electrochemical Reduction of CO2 to CH3 OH
Abstract Electrocatalysis has emerged as an attractive way for artificial CO2 fixation to CH3 OH, but the design and development of metal‐free electrocatalyst for highly selective CH3 OH formation still remains a key challenge. Here, it is demonstrated that boron phosphide nanoparticles perform highly efficiently as a nonmetal electrocatalyst toward electrochemical reduction of CO2 to CH3 OH with high selectivity. In 0.1 m KHCO3, this catalyst achieves a high Faradaic efficiency of 92.0% for CH3 OH at −0.5 V versus reversible hydrogen electrode. Density functional theory calculations reveal that B and P synergistically promote the binding and activation of CO2, and the rate‐determining step for the CO2 reduction reaction is dominated by *CO + *OH to *CO + *H2 O process with free energy change of 1.36 eV. In addition, CO and CH2 O products are difficultly generated on BP (111) surface, which is responsible for the high activity and selectivity of the CO2‐to‐CH3 OH conversion process..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:31 |
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| Enthalten in: |
Advanced Materials - 31(2019), 36 |
| Beteiligte Personen: |
Mou, Shiyong [VerfasserIn] |
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| BKL: |
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| Anmerkungen: |
© 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim |
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| Umfang: |
6 |
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| doi: |
10.1002/adma.201903499 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Abstract Electrocatalysis has emerged as an attractive way for artificial CO2 fixation to CH3 OH, but the design and development of metal‐free electrocatalyst for highly selective CH3 OH formation still remains a key challenge. Here, it is demonstrated that boron phosphide nanoparticles perform highly efficiently as a nonmetal electrocatalyst toward electrochemical reduction of CO2 to CH3 OH with high selectivity. In 0.1 m KHCO3, this catalyst achieves a high Faradaic efficiency of 92.0% for CH3 OH at −0.5 V versus reversible hydrogen electrode. Density functional theory calculations reveal that B and P synergistically promote the binding and activation of CO2, and the rate‐determining step for the CO2 reduction reaction is dominated by *CO + *OH to *CO + *H2 O process with free energy change of 1.36 eV. In addition, CO and CH2 O products are difficultly generated on BP (111) surface, which is responsible for the high activity and selectivity of the CO2‐to‐CH3 OH conversion process. | ||
| 700 | 1 | |a Wu, Tongwei |4 aut | |
| 700 | 1 | |a Xie, Junfeng |4 aut | |
| 700 | 1 | |a Zhang, Ya |4 aut | |
| 700 | 1 | |a Ji, Lei |4 aut | |
| 700 | 1 | |a Huang, Hong |4 aut | |
| 700 | 1 | |a Wang, Ting |4 aut | |
| 700 | 1 | |a Luo, Yonglan |4 aut | |
| 700 | 1 | |a Xiong, Xiaoli |4 aut | |
| 700 | 1 | |a Tang, Bo |4 aut | |
| 700 | 1 | |a Sun, Xuping |4 aut | |
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