Rational and low-cost preparation of Mo–Pd nanoalloys interconnected with porous graphite electrode as highly efficient electrocatalyst for glucose oxidation

A novel and low-cost graphite electrode decorated by Mo–Pd nanoalloys with high surface area and excellent mechanical strength is introduced as an appropriate electrocatalyst for the glucose oxidation. The porous Mo 6 –Pd 1 Nps/graphite (porous Mo 6 –Pd 1 /G) electrode was easily fabricated via the...

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Bibliographic Details
Published in:Journal of applied electrochemistry 2023-04, Vol.53 (4), p.861-874
Main Authors: Mojarrad, Amir, Sabzi, Reza E., Faraji, Masoud
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Electrocatalysts
Electrochemistry
Electrodes
Electron microscopy
Glucose
Graphite
Industrial Chemistry/Chemical Engineering
Leaching
Low cost
Nanoalloys
Oxidation
Palladium
Physical Chemistry
Research Article
Sulfuric acid
Surface area
Zinc
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Summary:A novel and low-cost graphite electrode decorated by Mo–Pd nanoalloys with high surface area and excellent mechanical strength is introduced as an appropriate electrocatalyst for the glucose oxidation. The porous Mo 6 –Pd 1 Nps/graphite (porous Mo 6 –Pd 1 /G) electrode was easily fabricated via the uniform adding of Zn powder into the matrix of commercial graphite powder (98%), pressing under optimized pressure followed by treatment in H 2 SO 4 solution containing Mo +2 and Pd +2 cations, leading to partial leaching out of Zn from graphite matrix as well as partial electroless substitution of Mo–Pd nanoalloys with Zn. Scanning electron microscopy (SEM) and transmission electron microscope (TEM) results indicated that an interconnected structure of Mo–Pd nanoalloys with graphite layers was uniformly formed on the graphite electrode. The results of several electrochemical investigations showed that the Mo–Pd Nps /graphite electrocatalyst exhibited exceptional electrocatalytic activity for the oxidation of glucose, which was attributed to its interconnected structure and large electrode surface area. The outcome of this work will surely be helpful for producing graphite-based electrodes on a large scale for various electrocatalytic applications. Graphical abstract The scheme of detailing the fabrication steps and performance porous Mo 6 –Pd 1 /G electrocatalyst.
ISSN:0021-891X
1572-8838
DOI:10.1007/s10800-022-01803-w