The regulation of Cu-ZnO interface by Cu-Zn bimetallic metal organic framework-templated strategy for enhanced CO2 hydrogenation to methanol

Han, Caiyun; Zhang, Haotian; Li, Congming; Wang, Shuang; Wang, Peng; Li, Jinping

doi:10.1016/j.apcata.2022.118805

Cited by 26 publications

(16 citation statements)

References 63 publications

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“…41–43 Hence, the percentage of chemisorbed oxygen of each catalyst was calculated in order to estimate the amount of oxygen vacancies, oxygen vacancy = O ads ratio = ( A Oads /( A Olatt + A Oads ). 34,41,43 As presented in Fig. 3d, the oxygen vacancies of CZA-1-R, CZA-2-R and CZA-3-R catalysts were 64%, 78% and 73%, respectively.…”

Section: Resultsmentioning

confidence: 87%

“…Moreover, the metal-support interaction was enhanced due to the presence of a rich Cu-ZnO interface, which promoted the overflow of active H species on Cu to the support, hydrogenating the CO 2 adsorbed on the support to methanol. 34,37 The HAADF-STEM and EDS images (Fig. S6, ESI †) of CZA-1-R, CZA-2-R and CZA-3-R confirmed the uniform distribution of Cu, Zn, Al and O elements.…”

Section: Catalyst Characterizationmentioning

confidence: 78%

“…Our group's report and that of Hanlin Lyu demonstrate that adjusting the amount of ZnO introduced into the catalyst can effectively reduce the Cu particle size. 14,34 Cu particles agglomerated on the CZA-1-R catalyst due to the lack of ZnO support. As far as we know, the Cu-ZnO interface was crucial to ensure high catalytic activity, which had been recognized by many researchers as active sites for methanol synthesis.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

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Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Zhang

Han

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 87%

Section: Catalyst Characterizationmentioning

confidence: 78%

Section: Catalyst Characterizationmentioning

confidence: 99%

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Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Zhang

Han

et al. 2023

New J. Chem.

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“…This phenomenon could be interpreted by the promotional effect of Ga, where the doping of Ga effectively tuned oxygen vacancy contents, as verified by the EPR analyses, affecting the electron transfer from ZnO to Cu and accordingly changing the degree of Cu/ZnO interaction. Increased oxygen vacancies promoted the excitation of more electrons from ZnO to Cu, leading to stronger Cu/ZnO interaction and increasing the reduction of temperature and H 2 consumption. , …”

Section: Resultsmentioning

confidence: 99%

“…Increased oxygen vacancies promoted the excitation of more electrons from ZnO to Cu, leading to stronger Cu/ZnO interaction and increasing the reduction of temperature and H 2 consumption. 35,36 TEM and HRTEM Characterization. TEM image and the corresponding distribution of the Cu particle size of the CZG catalysts are presented in Figure 5a,c.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Oxygen Vacancy Control of Catalytic Activity of Cu/ZnO for Higher Alcohols Synthesis via Incorporating Ga

Tian,

et al. 2023

ACS Sustainable Chem. Eng.

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Incorporating a small number of promoters into Cu/ZnO catalysts could modify the defect structure of the catalyst, leading to differences in the interaction of active sites and dramatically affecting the catalytic performance. Herein, Cu/ZnO catalysts with different oxygen vacancy contents were successfully synthesized by incorporating Ga via the Complete Liquid Phase method (CLP). The studies suggested that changing the Ga loading could effectively tune the oxygen vacancy content. Increased oxygen vacancies enhanced the electron transfer from ZnO to Cu, strengthening the Cu/ZnO interaction and herewith forming more Cu0 as well as defect structures of Znδ+, which favored the formation of CH x O*(CH x *) and carbon chain growth. In situ DRIFT results implied that oxygen vacancy facilitated the activation of CO, in which the formation of HCOO* and CH x O* was involved and CH x * formed through CO dissociation and further hydrogenation or the partial dissociation of CH x O* on the Cu0 active sites. Ultimately, C2 +OH was produced by the C–C coupling of CH x * with CH x O*/CO* in the Znδ+ sites. As a result, Cu/ZnO catalyst doped with 6 mol % Ga realized outstanding catalytic performance with 17.22% CO conversion, and the fraction of ethanol and C2+OH up to 60.22% and 71.90%, respectively.

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Hierarchical two‐dimensional Ti‐MOF derived from MXene for hybrid supercapacitor electrodes

Li,

Cheng,

et al. 2024

Applied Organom Chemis

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Presently, two‐dimensional (2D) metal–organic framework (MOF) are drawing increasing attention in energy‐storage areas. However, more and complexed factors would affect the nucleation and growth of 2D MOFs, and subsequently affect the final performance. Particularly, it is important to control the coordination rate between ions and ligands. In this paper, MXene was directly used as titanium source to coordinate with an organic ligand to form Ti‐MOF sheets. To further boost the performance, mesopores were introduced in preparing 2D Ti‐MOF, constructing hierarchical porous Ti‐MOF@Ti3C2TX hybrids. Results showed that diffusion‐controlled behaviors play a dominant role over surface capacitive behaviors during the charge storage process of the hierarchical porous hybrids. A hybrid supercapacitor (HSC) assembled with the obtained HP‐Ti‐MOF@Ti3C2TX and activated carbon (AC) exhibited an energy density of 22.9 Wh kg−1 at a power density of 850 W kg−1 (1 A g−1), and a power density of 4.25 kW kg−1 at an energy density of 15.3 Wh kg−1 (5 A g−1). The present strategy is expected to provide design ideas for novel energy‐storage electrode materials.

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The regulation of Cu-ZnO interface by Cu-Zn bimetallic metal organic framework-templated strategy for enhanced CO2 hydrogenation to methanol

Cited by 26 publications

References 63 publications

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Oxygen Vacancy Control of Catalytic Activity of Cu/ZnO for Higher Alcohols Synthesis via Incorporating Ga

Hierarchical two‐dimensional Ti‐MOF derived from MXene for hybrid supercapacitor electrodes

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The regulation of Cu-ZnO interface by Cu-Zn bimetallic metal organic framework-templated strategy for enhanced CO2 hydrogenation to methanol

Cited by 26 publications

References 63 publications

Design of Cu/ZnO/Al2O3catalysts with a rich Cu–ZnO interface for enhanced CO2hydrogenation to methanol using zinc-malachite as the precursor

Design of Cu/ZnO/Al2O3catalysts with a rich Cu–ZnO interface for enhanced CO2hydrogenation to methanol using zinc-malachite as the precursor

Oxygen Vacancy Control of Catalytic Activity of Cu/ZnO for Higher Alcohols Synthesis via Incorporating Ga

Hierarchical two‐dimensional Ti‐MOF derived from MXene for hybrid supercapacitor electrodes

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Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor

Design of Cu/ZnO/Al₂O₃catalysts with a rich Cu–ZnO interface for enhanced CO₂hydrogenation to methanol using zinc-malachite as the precursor