We report that the biomass-derived lignosulfonate (LS) can function as a quasi-homogenous electron mediator to efficiently promote the electron transfer from the excited erythrosin B (ErB) to the generated Pt cocatalyst under visible light, thus enhancing the photocatalytic H evolution activity by over 10 fold as compared to the LS-free system.
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http://dx.doi.org/10.1039/d3cc02856a | DOI Listing |
Chem Commun (Camb)
August 2023
School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P. R. China.
We report that the biomass-derived lignosulfonate (LS) can function as a quasi-homogenous electron mediator to efficiently promote the electron transfer from the excited erythrosin B (ErB) to the generated Pt cocatalyst under visible light, thus enhancing the photocatalytic H evolution activity by over 10 fold as compared to the LS-free system.
View Article and Find Full Text PDFPhys Chem Chem Phys
March 2012
Institute of Physical and Theoretical Chemistry, Graz University of Technology, Stremayrgasse 9/I, A-8010 Graz, Austria.
The effect of preferential solvation on the exciplex luminescence detected magnetic field effect has been studied using magnetic-field-effect-on-reaction-yield (MARY) spectroscopy. By designing solvent mixtures which can provide a micro-environment around the magneto-sensitive radical ion pair (RIP) from highly heterogeneous to quasi-homogenous, the effect of the polarity scan on an absolute magnetic field effect (χ(E)) and B(1/2) (the field value marking half saturation) has been studied on the system 9,10-dimethylanthracene (fluorophore)/N,N'-dimethylaniline (quencher). While the trend in χ(E) (although with subtle differences) follows the usual norm of passing through maxima with increasing polarity, the B(1/2) values show either a large monotonic decrease (for heterogeneous solvents) or remain constant (for quasi-homogenous systems) with increasing polarity.
View Article and Find Full Text PDFMolecules
December 2010
Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore.
Fe(3)O(4):PVP/Au nanocomposite synthesized via a two-step procedure was tested as a quasi-homogenous alcohol oxidation catalyst. It was found that the nanocomposite was able to carry out aerobic oxidation of alcohols in water at room temperature. Studies show rapid magnetic recoverability and reusability characteristics.
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