Free metal oxygen-reduction electro-catalysts obtained from biomass residue of the olive oil industry

被引：27

作者：

Elmouwahidi, Abdelhakim ^{[1
]}

Vivo-Vilches, Jose F. ^{[1
]}

Perez-Cadenas, Agustin F. ^{[1
]}

Maldonado-Hodar, Francisco J. ^{[1
]}

Carrasco-Marin, Francisco ^{[1
]}

机构：

[1] Univ Granada, Fac Sci, Dept Inorgan Chem, Carbon Mat Res Grp, Campus Fuentenueva S-N, E-18071 Granada, Spain

来源：

CHEMICAL ENGINEERING JOURNAL | 2016年 / 306卷

关键词：

Activated carbon; Sulphur; Solvothermal; Oxygen reduction; Electro-catalyst; WALLED CARBON NANOTUBES; SULFUR-DOPED GRAPHENE; SURFACE-CHEMISTRY; HYDROTHERMAL OXIDATION; EFFICIENT SYNTHESIS; MESOPOROUS CARBONS; ACTIVATED CARBONS; FUEL-CELLS; NANOPARTICLES; PERFORMANCE;

D O I：

10.1016/j.cej.2016.08.042

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Advanced carbon materials are obtained from a solid residue of waste water used in the olive oil industry. Solvothermal treatments with different amounts of thioglycolic acid are carried out in order to develop specific sulphur functionalities on the carbon surface. Samples are exhaustively characterized to determine the textural, chemical and electrochemical properties. These materials are tested as electrocatalysts for oxygen reduction reaction in a three electrode electrochemical set-up. Correlations between the characteristics of the carbons and their electrochemical performance are established. Electrodes containing sulphur functionalities show a very good electro-catalytic behaviour with larger kinetic current densities and lower activation potentials. Linear Sweep Voltammetry is performed at different rotation speeds in order to calculate the number of electrons transferred and kinetic current densities by applying Koutecky-Levich equation. Thus, it is pointed out that oxygen reduction takes place through the desired four electrons pathway on the sulphur doped electro-catalysts. These carbon materials show a similar catalytic performance to that of other free-metal electro-catalysts based in graphene recently reported in the bibliography. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1109 / 1115

页数：7

共 37 条

[1] Covalently grafted platinum nanoparticles to multi walled carbon nanotubes for enhanced electrocatalytic oxygen reduction [J].