Enhancing CO2 electrolysis to formate on facilely synthesized Bi catalysts at low overpotential

Zhang, Xia; Tao, Lei; Liu, Yuyu; Qiao, Jinli

doi:10.1016/j.apcatb.2017.06.032

Cited by 104 publications

(52 citation statements)

References 34 publications

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“…The obtained results were shown in Figure b. It could be seen that the formate FE (91 %) and current density (22 mA cm −2 ) could keep stable without any significant decreasing during the electrolysis for 23 h. The result is comparable with those reported in the previous literature, demonstrating that Bi 2 O 3 ‐A electrode catalyst has a potential application for CO 2 electroreduction.…”

Section: Resultssupporting

confidence: 82%

“…However, it should be noted that some key problems have not still be solved, such as poor catalytic stability and low electrolytic current density. In the previous investigations, the stability of Bi electrode catalysts was only examined for 7∼12 h and current density was relatively low (within the range 3∼15 mA cm −2 ), which could not meet the requirement of practical applications. So Bi‐based electrocatalysts need to be improved greatly.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Miao

Yuan

2018

ChemElectroChem

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In this paper, Bi2O3 electrocatalysts for the electroreduction of CO2 to formate were synthesized with different morphologies, including nanoparticles and thin nanorods. Comparatively, Bi2O3 nanoparticles have higher catalytic activity than Bi2O3 thin nanorods. The Faradaic efficiency of formate formation at a moderate potential of −1.2 vs. RHE in aqueous solution could reach 91 %. In addition, a maximum current density for formate production of up to 22 mA cm−2 was achieved, which is almost 3 times higher than that of Bi2O3 thin nanorods. In particular, the catalytic activity of the Bi2O3 nanoparticle catalyst was almost stable over a 23‐hour period of electrolysis, exhibiting its application prospect in the electroreduction of CO2 to formate.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Miao

Yuan

2018

ChemElectroChem

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“…Among the best approaches, ORR catalysts based on nonprecious metal, such as Ni, Fe, or Co correlated to nonmetallic elements such as P, S, N, Si, or C represent one of the most viable systems . Nowadays, it is well known that size and shape of metal nanoparticles and substrate materials are very important factors in determining the activity of catalysts, and decreasing the metal particle size leads to a larger free surface, lower coordination number, and constrained spatial configuration, resulting, among other things, in better accessibility to empty d atomic orbitals from the metal species …”

Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reactions on Single‐ or Few‐Atom Discrete Active Sites for Heterogeneous Catalysis

Sharifi

Gracia‐Espino

Chen

et al. 2019

Advanced Energy Materials

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The oxygen reduction reaction (ORR) is of great importance in energy‐converting processes such as fuel cells and in metal–air batteries and is vital to facilitate the transition toward a nonfossil dependent society. The ORR has been associated with expensive noble metal catalysts that facilitate the O2 adsorption, dissociation, and subsequent electron transfer. Single‐ or few‐atom motifs based on earth‐abundant transition metals, such as Fe, Co, and Mo, combined with nonmetallic elements, such as P, S, and N, embedded in a carbon‐based matrix represent one of the most promising alternatives. Often these are referred to as single atom catalysts; however, the coordination number of the metal atom as well as the type and nearest neighbor configuration has a strong influence on the function of the active sites, and a more adequate term to describe them is metal‐coordinated motifs. Despite intense research, their function and catalytic mechanism still puzzle researchers. They are not molecular systems with discrete energy states; neither can they fully be described by theories that are adapted for heterogeneous bulk catalysts. Here, recent results on single‐ and few‐atom electrocatalyst motifs are reviewed with an emphasis on reports discussing the function and the mechanism of the active sites.

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“…With increasing awareness for the environment, this "green element" has started to attracti ncreasing attention in recent years for efficient electrocatalytic CO 2 conversion by virtue of its higherh ydrogen overpotential. [7][8][9] In this respect, metallic Bi has been demonstrated to exhibit excellent CO 2 -to-CO catalytic activity in ionic liquid electrolytes. [10][11][12] In aqueous electrolytes, Bi is also expected to achieve satisfactory CO 2 -to-HCOOH catalytic activity.B ecause the electrocatalytic CO 2 reduction performance is highly dependent on the material architecture, it is important to control the Bi nanostructure owing to the low melting point of metallic Bi.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Transformation of Facet‐Controlled BiOI into Mesoporous Bismuth Nanosheets for Selective Electrocatalytic Reduction of CO₂ to Formic Acid

Liu

Liang

et al. 2019

ChemSusChem

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Mesoporous bismuth nanosheets are prepared through electrochemical transformation of (100)‐facet exposed BiOI. Theoretical modeling and calculations are used to simulate the in situ morphological transformation of BiOI into Bi. Mesoporous Bi nanosheets show superior electrochemical CO2 reduction performance. A faradaic efficiency of 95.9 % at −0.77 VRHE for the conversion of CO2 into formic acid, is achieved for the mesoporous Bi nanosheet catalyst compared with 93.8 % at −0.87 VRHE for the smooth Bi nanosheets. Tafel analysis and DFT calculations indicate that the electrochemical CO2 reduction on mesoporous Bi nanosheets is kinetically faster with a higher resistance to H2 generation than that on smooth Bi(001) nanosheets. The CO2‐to‐HCOOH pathway is preferred through formation of an *OCHO intermediate on the (012) and (001) planes of Bi. The mesoporous structure induces a more accessible interaction with CO2, which makes a predominant contribution to the enhanced performance compared with the subsequent CO2 activation on different facets of Bi.

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Enhancing CO2 electrolysis to formate on facilely synthesized Bi catalysts at low overpotential

Cited by 104 publications

References 34 publications

Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Oxygen Reduction Reactions on Single‐ or Few‐Atom Discrete Active Sites for Heterogeneous Catalysis

Electrochemical Transformation of Facet‐Controlled BiOI into Mesoporous Bismuth Nanosheets for Selective Electrocatalytic Reduction of CO₂ to Formic Acid

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Enhancing CO2 electrolysis to formate on facilely synthesized Bi catalysts at low overpotential

Cited by 104 publications

References 34 publications

Morphology‐Controlled Bi2O3 Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO2 to Formate

Morphology‐Controlled Bi2O3 Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO2 to Formate

Oxygen Reduction Reactions on Single‐ or Few‐Atom Discrete Active Sites for Heterogeneous Catalysis

Electrochemical Transformation of Facet‐Controlled BiOI into Mesoporous Bismuth Nanosheets for Selective Electrocatalytic Reduction of CO2 to Formic Acid

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Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Morphology‐Controlled Bi₂O₃ Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO₂ to Formate

Electrochemical Transformation of Facet‐Controlled BiOI into Mesoporous Bismuth Nanosheets for Selective Electrocatalytic Reduction of CO₂ to Formic Acid