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Mesoscopic Fabric Sheet Racks and Blocks as Catalysts with Efficiently Exposed Surfaces for Methanol and Ethanol Electrooxidation

Shenashen, Mohamed A., Hassen, Diab, El-Safty, Sherif, Selim, Mahmoud M., Akhtar, Naeem, Chatterjee, Abhijit and Elmarakbi, Ahmed (2016) Mesoscopic Fabric Sheet Racks and Blocks as Catalysts with Efficiently Exposed Surfaces for Methanol and Ethanol Electrooxidation. Advanced Materials Interfaces, 3 (24). p. 1600743. ISSN 2196-7350

Item Type: Article


Electrode designs based on sheet racks and blocks with multidiffuse groove spaces and enriched active sites and scales would promote the commercial applications of electroactive materials. A facile one‐pot hydrothermal approach is reported to synthesize mesoscopic porous Co3O4 or hybrid graphene (GO)/Co3O4 sheet‐on‐sheet racks and blocks. Three basic types of sheet scalability racks can be built in vertical and nonstacked edge orientations, such as neat micro/nanogroove rooms, butterfly wing scales, and wall groves, leading to highly exposed surface converges and sites. In particular, the stacked GO/Co3O4 sheet‐on‐sheet blocks (GO/Co3O4 blocks) can be oriented in vertical tower buildings. The atomic structures of the developed Co3O4 catalysts are dominant along the highly dense {112/111} interfaces and single crystal {111} and {112} facets. The electrochemical performance of the mesoscopic porous Co3O4 catalyst toward methanol and ethanol electrooxidation is evaluated in alkaline conditions. The mesoscopic hybrid GO/Co3O4 racks reveal superior catalytic activity in terms of oxidation currents and onset potentials, indicating the effect of the synergetic role of active Co3+ sites along the densely exposed {112} facets, graphene counterparts, and hierarchically nonstacked sheet racks on the electroactive functionality. Results indicate that the mesoscopic GO/Co3O4 sheet catalyst is suitable for highly efficient electrochemical reactions.

6839 AMI_Elmarakbi et al 2016.pdf - Accepted Version
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Depositing User: Michelle Marshall


Item ID: 10701
Identification Number:
ISSN: 2196-7350
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Users with ORCIDS

ORCID for Sherif El-Safty: ORCID iD
ORCID for Ahmed Elmarakbi: ORCID iD

Catalogue record

Date Deposited: 25 Apr 2019 10:00
Last Modified: 10 Jun 2021 15:26


Author: Sherif El-Safty ORCID iD
Author: Ahmed Elmarakbi ORCID iD
Author: Mohamed A. Shenashen
Author: Diab Hassen
Author: Mahmoud M. Selim
Author: Naeem Akhtar
Author: Abhijit Chatterjee

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Faculty of Technology > School of Engineering



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