The crucial role of catalyst wettability for hydrogenation of biomass and carbon dioxide over heterogeneous catalysts

Wei, Miaomiao; Kuang, Yongqi; Duan, Zhongyu; Li, Hao

doi:10.1016/j.xcrp.2023.101340

Cited by 8 publications

(7 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The generation of hydrophilic groups on MMT holds potential for improving the catalyst’s dispersion in aqueous solutions, which is crucial for boosting catalytic efficiency by collectively increasing the catalyst’s surface area to provide more active sites, improving accessibility of reactants to active sites, enhancing mass transfer of reactants and products, preventing the agglomeration of catalysts, maximizing catalyst utilization, and reducing diffusion limitations of reactants − .…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 0 ppm corresponds to the Al atoms in the octahedral sites (AlO 6 ). 34 This peak also indicates the isomorphic substitution of silicon atoms in the tetrahedral sheets, which could introduce structural variability to alter the catalyst's properties and reactivity [31]. The three peaks ranging from 50 to 70 ppm originate from the Al atoms tetrahedrally coordinated to oxygen (AlO 4 ) in distinct environments.…”

Section: Acs Applied Energy Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Zhang,

Wang,

Tao

et al. 2024

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Montmorillonite (MMT), a layered hydrated aluminum silicate mineral, emerges as a promising catalyst support due to its substantial specific surface, ion storage capacity, thermal stability, and cost-effectiveness. Despite the success of MMT-based photocatalysts in degrading compounds, their potential for the photocatalytic hydrogen evolution reaction (HER) is underexplored. Furthermore, the reliance on noble metals and dye sensitization in MMT-based photocatalysts leads to elevated costs. This study introduces an MMT-based photocatalyst modified with Fe species (denoted as Fe@MMT) for photocatalytic HER without the reliance on noble metals and dye sensitization. The incorporation of Fe species has a dual impact, expanding the light harvesting region of MMT and modulating the aluminum-silicate framework. Simultaneously, it facilitates the exfoliation of individual sheets from stacked MMT layers, generating abundant active sites and inner electronic fields that can promote the separation of photoexcited electrons and enhance the photon-to-electron conversion. In comparison to pristine MMT, Fe@MMT exhibits a 43% reduction in the charge transfer resistance in the dark and a 52% reduction under illumination. Additionally, the majority carrier density within the space charge region increased by 33%. Due to these advantages, the photocatalytic HER efficiency over Fe@MMT was improved, approximately 2.9 times that of pristine MMT.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Acs Applied Energy Materialsmentioning

confidence: 99%

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Zhang,

Wang,

Tao

et al. 2024

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…The activation process can be explained in terms of the enhanced wetting property of the catalyst surface or surface reconstruction. [49] The surface of the electrocatalyst can become rich in available active sites via leaching of the surface. We also observe a hump near À 0.1 V vs. RHE in CV forward scan but not for reference GC or the backward scan, as shown in Figure 5b, evidencing that the material undergoes a reduction redox process which can be attributed to the reduction of the oxidized Bi species by applying cathodic bias.…”

Section: Resultsmentioning

confidence: 99%

Bi site doped Ferroelectric BiFe_0.95Mn_0.05O₃ Nanoparticles for Hydrogen Evolution Reaction

Dubey,

Sanjuán,

Andronescu

et al. 2024

ChemCatChem

View full text Add to dashboard Cite

The investigation delves into the functionality exhibited by ferroelectric BiFe0.95Mn0.05O3 (BFM) nanoparticles (NPs) concerning the hydrogen evolution reaction (HER). The electrocatalytic activity of BFM NPs undergoes a transformative shift as a consequence of mono‐, di‐, and tri‐valent cation substitution. Notably, the strategic engineering of doping at the Bi site within BFM NPs yields a remarkable outcome, namely the conspicuous reduction of the kinetic overpotential prerequisite for HER. This diminished overpotential in doped BFM NPs arises from the confluence of multifarious factors: diminished charge transfer resistance, augmented specific surface area, a discernible distribution of pore sizes ranging from narrow to broad, particles endowed with a shape boasting abundant active facets, and the integration of dopants as novel active sites on the surface. Furthermore, the presence of surface defects, oxygen vacancies, and amplified microstrain within doped BFM NPs contributes to the reduction in overpotential.

show abstract

“…In particular, low-temperature gas-phase reactions, in which water is used as a reactant or product, [1,2] and liquid-phase reactions, in which water serves as a (co)solvent [3,4], are strongly influenced by the surface hydrophobicity of the catalyst. Therefore, various techniques, such as surface coating, surface grafting, surface etching, and space structure modification, have been adopted to control the surface hydrophobicity of catalysts [5].…”

Section: Introductionmentioning

confidence: 99%

Simple Fabrication of Hydrophobicity-Controlled Fe-ZSM-5 for Aqueous-Phase Partial Oxidation of Methane with Hydrogen Peroxide

Hwang,

Kwon,

Hwang

et al. 2024

Catalysts

View full text Add to dashboard Cite

Surface hydrophobicity is an important factor in controlling the catalytic activity of heterogeneous catalysts in various reactions, particularly liquid-phase reactions using water as the (co)solvent. In this study, the surface hydrophobicity of Fe-ZSM-5 was successfully controlled using a simple coating method in which furfuryl alcohol was used as the carbon precursor. Various techniques, such as N2 physisorption, temperature-programmed desorption of ammonia, and contact angle measurements of water droplets, were used to characterize the catalysts. Fe-ZSM-5 catalysts with different degrees of hydrophobicity were used for the aqueous-phase selective oxidation of methane with H2O2. The positive effect of the surface carbon coating on the catalytic performance was confirmed when the carbon content was not sufficiently high to block the pores.

show abstract

The crucial role of catalyst wettability for hydrogenation of biomass and carbon dioxide over heterogeneous catalysts

Cited by 8 publications

References 97 publications

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Bi site doped Ferroelectric BiFe_0.95Mn_0.05O₃ Nanoparticles for Hydrogen Evolution Reaction

Simple Fabrication of Hydrophobicity-Controlled Fe-ZSM-5 for Aqueous-Phase Partial Oxidation of Methane with Hydrogen Peroxide

Contact Info

Product

Resources

About

The crucial role of catalyst wettability for hydrogenation of biomass and carbon dioxide over heterogeneous catalysts

Cited by 8 publications

References 97 publications

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Activating Montmorillonite for Light-Driven Hydrogen Evolution with the Coupling of Fe Species

Bi site doped Ferroelectric BiFe0.95Mn0.05O3 Nanoparticles for Hydrogen Evolution Reaction

Simple Fabrication of Hydrophobicity-Controlled Fe-ZSM-5 for Aqueous-Phase Partial Oxidation of Methane with Hydrogen Peroxide

Contact Info

Product

Resources

About

Bi site doped Ferroelectric BiFe_0.95Mn_0.05O₃ Nanoparticles for Hydrogen Evolution Reaction