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Electrocatalytic Glycerol Oxidation with Concurrent Hydrogen Evolution Utilizing an Efficient MoOx /Pt Catalyst
Xiaowen Yu1, Egon Campos Dos Santos2, Jai White3
1Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, SE-106 91, Sweden.
Small (Weinheim an Der Bergstrasse, Germany)
|October 1, 2021
Summary
This study presents a novel molybdenum oxide/platinum (MoOx/Pt) catalyst for efficient glycerol electrolysis. This composite material enhances both hydrogen production and value-added chemical generation, offering a greener energy solution.
Area of Science:
- Electrochemistry
- Materials Science
- Green Chemistry
Background:
- Glycerol electrolysis is a promising green route for producing chemicals and hydrogen.
- Developing efficient electrocatalysts is crucial for optimizing glycerol electrolysis.
Purpose of the Study:
- To develop a high-performance electrocatalyst for glycerol oxidation reaction (GOR) and hydrogen evolution reaction (HER).
- To investigate the synergistic effects of molybdenum oxide nanosheets and platinum nanoparticles.
Main Methods:
- Synthesized a MoOx/Pt composite electrocatalyst by trapping Pt nanoparticles at oxygen vacancies of MoOx nanosheets.
- Conducted electrochemical experiments and theoretical calculations to analyze catalytic performance.
- Performed two-electrode glycerol electrolysis using the composite as both anode and cathode.
Main Results:
- The MoOx/Pt composite demonstrated high performance for both GOR and HER in alkaline electrolytes.
- MoOx nanosheets facilitated glycerol adsorption and water dissociation, enhancing Pt activity.
- Achieved a current density of 10 mA cm-2 at a cell voltage of 0.70 V for two-electrode glycerol electrolysis.
Conclusions:
- The MoOx/Pt composite significantly enhances catalytic activity and kinetics for glycerol electrolysis.
- This catalyst offers a more energy-efficient alternative to traditional water electrolysis.
- The study highlights the potential of MoOx/Pt for sustainable chemical and hydrogen production.
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