Nonstoichiometric tungsten oxides (WO) with abundant oxygen vacancies were synthesized and used as nonmetallic plasmonic photocatalysts to promote ethanol dehydrogenation under UV-visible light irradiation. Plasmonic WO have unique electronic structures that act as Z-scheme heterostructures. UV-excited photoelectrons were injected into the conduction band of WO, stabilizing the free electron density and boosting plasmonic hot electron generation for ethanol dehydrogenation. The synergetic effect of UV and visible light excitations greatly enhances the aldehyde generation to 2696 μmol g (3 hours) with a high selectivity of 91%, which is 74-fold and 12-fold higher than those obtained under only UV or visible light irradiation, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c9nr03741a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A surface lattice oxygen-promoted ZnO catalyst for ethanol nonoxidative dehydrogenation.
Chem Commun (Camb)
January 2025
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
The surface lattice oxygen of ZnO was demonstrated to be critical for the nonoxidative dehydrogenation of ethanol, which combines with surface-exposed Zn to effectively produce acetaldehyde and the energy molecule hydrogen.
View Article and Find Full Text PDFEffect of the ZrO Crystal Phase on Performance over a CuCeZrO Catalyst for Dehydrogenative Condensation of Ethanol to Ethyl Acetate.
J Phys Chem Lett
October 2024
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Article Synopsis
- Ethyl acetate production through ethanol dehydrogenative condensation is highly efficient with 95.6% atomic economy, leveraging CuZrO-based catalysts.
- The study investigates how the ZrO crystal phase in the CuCeZrO catalyst, influenced by calcination temperature, impacts reaction outcomes, revealing that a higher temperature favors the transformation to a more beneficial monoclinic phase.
- Monoclinic ZrO enhances ethyl acetate selectivity, while tetragonal ZrO tends to produce butanol and other esters, providing insights for optimizing catalysts for better efficiency in ethyl acetate synthesis.
Enhancing Bioactivity through the Transfer of the 2-(Hydroxymethoxy)Vinyl Moiety: Application in the Modification of Tyrosol and Hinokitiol.
Molecules
July 2024
Department of Quantum Chemistry, Faculty of Chemistry, Adam Mickiewicz University of Poznań, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
Utilizing Density Functional Theory (DFT) calculations at the B3LYP/QZVP level and incorporating the Conductor-like Polarizable Continuum Model (C-PCM) for solvation, the thermodynamic and chemical activity properties of 21-(hydroxymethoxy)henicosadecaenal, identified in cultured freshwater pearls from the mollusk , have been elucidated. The study demonstrates that this compound releases formaldehyde, a potent antimicrobial agent, through dehydrogenation and deprotonation processes in both hydrophilic and lipophilic environments. Moreover, this polyenal exhibits strong anti-reductant properties, effectively scavenging free radicals.
View Article and Find Full Text PDFSingle-Atom Alloy Formation via Reaction-Driven Catalyst Restructuring.
J Am Chem Soc
July 2024
Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155, United States.
We demonstrate that single-atom alloy catalysts can be made by exposing physical mixtures of monometallic supported Cu and Pd catalysts to vinyl acetate (VA) synthesis reaction conditions. This reaction induces the formation of mobile clusters of metal diacetate species that drive extensive metal nanoparticle restructuring, leading to atomic dispersion of the precious metal, smaller nanoparticle sizes than the parent catalysts, and high activity and selectivity for both VA synthesis and ethanol dehydrogenation reactions. This approach is scalable and appears to be generalizable to other alloy catalysts.
View Article and Find Full Text PDFDesigning Cobalt(II) Complex for Chemoselective Synthesis of 2-Aryl-3-Formyl Indoles from Amino Alcohols and Alcohols.
Chemistry
August 2024
ISC Laboratory, Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan, 305817, India.
Article Synopsis
- A cobalt(II) complex (C1) was created using a specific ligand (L1) and was found to be stable and cost-effective.
- This complex was effective in catalyzing a reaction that combined 2-(2-aminophenyl)ethanols with benzyl alcohol derivatives, resulting in the production of 2-aryl-3-formylindole derivatives.
- Remarkably, this process required only a small amount of catalyst (5.0 mol%) and achieved yields of up to 87%, with the mechanism involving imine formation followed by cyclization.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!