Results 1 to 10 of about 545,247 (209)

Constructing multiple active sites in iron oxide catalysts for improving carbonylation reactions

open access: yesNature Communications, 2023
Surface engineering is a promising strategy to improve the catalytic activities of heterogeneous catalysts. Nevertheless, few studies have been devoted to investigate the catalytic behavior differences of the multiple metal active sites triggered by the ...
Shujuan Liu   +6 more
doaj   +1 more source

A facile strategy for incorporation of PtCo alloy into UiO-66-NH2 for cinnamaldehyde hydrogenation

open access: yesCatalysis Communications, 2023
As a material with multifunctional ligands, metal-organic frameworks (MOFs) can effectively regulate the electronic and geometric state of supported metal nanoparticles (MNPs).
Haiyu Shen   +6 more
doaj   +1 more source

Nitrogen-incorporation activates NiFeOx catalysts for efficiently boosting oxygen evolution activity and stability of BiVO4 photoanodes

open access: yesNature Communications, 2021
While solar-to-fuel conversion offers a renewable energy production strategy, photoelectrochemical water splitting requires further optimization.
Beibei Zhang   +7 more
doaj   +1 more source

Enhancing stability by trapping palladium inside N-heterocyclic carbene-functionalized hypercrosslinked polymers for heterogeneous C-C bond formations

open access: yesNature Communications, 2021
Catalyst deactivation caused by the aggregation of active metal species poses great challenges for supported metal catalyzed solid-liquid reactions. Here, the authors develop a hypercrosslinked polymer integrated with N-heterocyclic carbene (NHC) as ...
Chengtao Yue   +5 more
doaj   +1 more source

Tunable synthesis of furfurylamines or β-amino alcohols via Ru-catalyzed N–H functionalization using biomass-derived polyols

open access: yesGreen Synthesis and Catalysis, 2022
We report the highly efficient conversion of readily available biomass-derived polyols with amines to valuable furfurylamines or β-amino alcohols compounds using ruthenium catalysis.
Le Jia   +5 more
doaj   +1 more source

Detection of Lipase Activity Based on Fluorescence Inner Filter Effect of p-Nitrophenol [PDF]

open access: yesShipin Kexue, 2023
Lipase activity was detected based on the fluorescence properties of gold nanoclusters (AuNCs) and the inner filter effect (IFE) of p-nitrophenol. Glutathione-modified AuNCs was used as fluorophore, and p-nitrophenol produced from the lipase-catalyzed ...
XU Yang, XIN Jiaying, LI Huimin, WANG Guiru, WANG Yuqing
doaj   +1 more source

Chemodivergent transformations of amides using gem-diborylalkanes as pro-nucleophiles

open access: yesNature Communications, 2020
Amides are versatile synthetic building blocks, however the general stability of the amide bond makes its selective transformation challenging. Here, the authors report a chemodivergent transformation of primary, secondary and tertiary amides by using 1 ...
Wei Sun   +5 more
doaj   +1 more source

Understanding Selective Oxidations

open access: yesCHIMIA, 2010
Functionalizing organic molecules is an important value-creating step throughout the entire chemical value-chain. Oxyfunctionalization of value-chain. Oxyfunctionalization of e.g. C–H or C=C bonds is one of the most important functionalization technologies used industrially.
Ulrich Neuenschwander   +4 more
openaire   +3 more sources

Effect of doping TiO2 with alkaline-earth metal ions on its photocatalytic activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
TiO2 photocatalysts doped with alkaline-earth metal ions were prepared by the impregnation and coprecipitation methods. The sample were characterized by XRD, XPS and IR spectroscopy.
Li Yuexiang   +4 more
doaj   +1 more source

Effect of Water Chemistry on Zeta Potential of Air Bubbles

open access: yesInternational Journal of Electrochemical Science, 2013
Effects of various factors on zeta potential of air bubbles in aqueous solution were studied. It was found that the water pH, surfactants types and concentration, and water temperature had significant roles on the zeta potential of air bubbles.
Weihong Jia, Sili Ren, Bin Hu
doaj   +1 more source

Home - About - Disclaimer - Privacy