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Updated: Sep 15, 2025
05:34
Efficient Synthesis of Polyfunctionalized Benzenes in Water via Persulfate-promoted Benzannulation of α,β-Unsaturated Compounds and Alkynes
Published on: December 16, 2019
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Field-induced reactant enrichment enhances benzyl alcohol electrooxidation coupled with hydrogen evolution
Yifan Yan1,2, Lina Chen2, Shaoyu Kang2
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology Beijing 100029 P. R. China shaomf@mail.buct.edu.cn.
Chemical Science
|July 16, 2025
Summary
This study introduces a field-induced enrichment strategy using Au/CuO nanowire catalysts to boost electrochemical hydrogen evolution coupled with organic oxidation (EHCO). This method significantly enhances benzyl alcohol electrooxidation efficiency for cleaner energy production.
Area of Science:
- Electrochemistry
- Materials Science
- Sustainable Energy
Background:
- Electrochemical hydrogen evolution coupled with organic oxidation (EHCO) offers an energy-efficient alternative to traditional water electrolysis.
- Limited organic reactant adsorption on catalysts hinders EHCO system performance.
- Developing efficient catalysts is crucial for advancing EHCO technology.
Purpose of the Study:
- To enhance benzyl alcohol electrooxidation coupled with hydrogen evolution using a field-induced enrichment strategy.
- To investigate the role of catalyst morphology in promoting interfacial reactions.
- To establish a new approach for electrocatalyst design in EHCO systems.
Main Methods:
- Fabrication of a nanostructured cooperative catalyst: Au nanoparticles on CuO nanowires (Au/CuO NWs).
- Electrochemical characterization to evaluate performance metrics like current density and faradaic efficiency.
- COMSOL simulations to understand the influence of local electric fields on interfacial processes.
Main Results:
- Achieved a high current density of 734 mA cm-2 at 1.5 V vs. RHE.
- Demonstrated a benzyl alcohol oxidation rate of 4.74 mmol cm-2 h-1 with 91% faradaic efficiency for benzoic acid.
- Exhibited excellent stability with sustained industrial-level current output (>300 mA cm-2) in a membrane-free flow electrolyzer.
- Nanowire morphology was shown to induce localized electric fields, enhancing benzyl alkoxide enrichment and OH* species formation.
Conclusions:
- The field-induced enrichment strategy effectively enhances EHCO performance.
- Au/CuO NWs show significant potential for efficient and stable hydrogen production coupled with organic valorization.
- This work provides a new paradigm for electrocatalyst design by leveraging local electric field effects.
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