Efficient propane low-temperature destruction by Co3O4 crystal facets engineering: Unveiling the decisive role of lattice and oxygen defects and surface acid-base pairs

Jian, Yongxin; Tian, Mingjiao; He, Chi; Xiong, Jingchao; Jiang, Zeyu; Jin, Hui; Zheng, Lirong; Albilali, Reem; Shi, Jian‐Wen

doi:10.1016/j.apcatb.2020.119657

Cited by 176 publications

(110 citation statements)

References 42 publications

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“…If the partially saturated dangling bonds break the C 2[110] rotation symmetry (Figure S28, Supporting Information), the surface states open a very small gap at the crossing point (16.4 meV), which would barely influence its effect on ECO 2 RR. In addition, no observable NH (3215 cm −1 ), [ 45 ] SH (2447 cm −1 ), [ 46 ] and CH (3000 cm −1 ) bonds can be detected in the transmittance infrared spectrum of Bi RDs (Figure S29, Supporting Information), [ 47 ] which indicates that the residual amount of surfactants on Bi RDs is very limited. Thus, the influence of surfactants on the surface states of Bi RDs can be neglected.…”

Section: Resultsmentioning

confidence: 99%

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

et al. 2021

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Bismuth (Bi) is a topological crystalline insulator (TCI), which has gapless topological surface states (TSSs) protected by a specific crystalline symmetry that strongly depends on the facet. Bi is also a promising electrochemical CO2 reduction reaction (ECO2RR) electrocatalyst for formate production. In this study, single‐crystalline Bi rhombic dodecahedrons (RDs) exposed with (104) and (110) facets are developed. The Bi RDs demonstrate a very low overpotential and high selectivity for formate production (Faradic efficiency >92.2%) in a wide partial current density range from 9.8 to 290.1 mA cm−2, leading to a remarkably high full‐cell energy efficiency (69.5%) for ECO2RR. The significantly reduced overpotential is caused by the enhanced *OCHO adsorption on the Bi RDs. The high selectivity of formate can be ascribed to the TSSs and the trivial surface states opening small gaps in the bulk gap on Bi RDs, which strengthens and stabilizes the preferentially adsorbed *OCHO and mitigates the competing adsorption of *H during ECO2RR. This study describes a promising application of Bi RDs for high‐rate formate production and high‐efficiency energy storage of intermittent renewable electricity. Optimizing the geometry of TCIs is also proposed as an effective strategy to tune the TSSs of topological catalysts.

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Section: Resultsmentioning

confidence: 99%

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

et al. 2021

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“…Especially, the oxygen vacancy neighboring to the Cu site has more negative formation energy, which means that the oxygen vacancy at this site is easy to form. 58,59 The lower oxygen vacancy formation energy also confirms that the synergistic effect between Cu and Mn ions is conducive to the formation of the oxygen vacancy.…”

Section: ■ Results and Discussionmentioning

confidence: 76%

Peanut-Shaped Cu–Mn Nano-Hollow Spinel with Oxygen Vacancies as Catalysts for Low-Temperature NO Reduction by CO

Qin

Fan

et al. 2021

ACS Appl. Nano Mater.

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Manganese−copper spinel is a kind of efficient catalyst for NO reduction by CO; however, its unsatisfactory lowtemperature catalytic performance and poor N 2 selectivity limit its application. Here, peanut-shaped Cu 0.75 Mn 2.25 O 4 nano-hollow spinel (Cu 0.75 Mn 2.25 O 4 -NH) was prepared by a one-pot solvothermal method and applied in NO reduction by CO. The structure and physicochemical properties of catalysts were researched by comprehensive characterizations. Compared with Cu 0 . 7 5 Mn 2 . 2 5 O 4 nanoparticles (Cu 0 . 7 5 Mn 2 . 2 5 O 4 -NP), Cu 0.75 Mn 2.25 O 4 -NH displayed excellent low-temperature catalytic performance, achieving 90% NO conversion at 200 °C, and possessed a lower apparent activation energy (36.4 kJ•mol −1 ). Importantly, the unique nanostructure with more exposed active sites enhanced the redox properties and oxygen mobility of the Cu 0.75 Mn 2.25 O 4 -NH catalyst. In addition, a synergistic effect between different metal ions in the Cu 0.75 Mn 2.25 O 4 -NH catalyst promoted the formation of oxygen vacancies and more low-oxidation-state species, which were conducive to the N−O bond scission at low temperatures. Combining the in situ DRIFTS results and DFT calculations, the dispersed species of Cu y+ -O-Mn x+ could be reduced to the main reactive species of Cu (y−1)+ -□-Mn (x−1)+ . Moreover, the formation of oxygen vacancies optimized NO adsorption and activation ability, which improved the catalytic performance in NO reduction by CO.

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“…2 shows the Raman spectra of different catalysts. Raman peaks located at 191, 515, 612, 475 and 671 cm À1 could be observed over all samples, which were attributed to the 3 F 2g , E g and A 1g modes of Co 3 O 4 , 24 respectively. The Raman peak at 150 cm À1 is assigned to the A 2g mode vibration of La, which can be observed on all samples except the SC sample.…”

Section: Textual and Structural Analysismentioning

confidence: 85%

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Liu

Yang

Tian

et al. 2022

Phys. Chem. Chem. Phys.

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Efficient propane low-temperature destruction by Co3O4 crystal facets engineering: Unveiling the decisive role of lattice and oxygen defects and surface acid-base pairs

Cited by 176 publications

References 42 publications

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

Peanut-Shaped Cu–Mn Nano-Hollow Spinel with Oxygen Vacancies as Catalysts for Low-Temperature NO Reduction by CO

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

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Efficient propane low-temperature destruction by Co3O4 crystal facets engineering: Unveiling the decisive role of lattice and oxygen defects and surface acid-base pairs

Cited by 176 publications

References 42 publications

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO2 Reduction

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO2 Reduction

Peanut-Shaped Cu–Mn Nano-Hollow Spinel with Oxygen Vacancies as Catalysts for Low-Temperature NO Reduction by CO

Insights into the role of strontium in catalytic combustion of toluene over La1−xSrxCoO3 perovskite catalysts

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Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

Facet Engineering to Regulate Surface States of Topological Crystalline Insulator Bismuth Rhombic Dodecahedrons for Highly Energy Efficient Electrochemical CO₂ Reduction

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts