Straightforward engineering of porous C3N4/Fe3O4 electrocatalyst for oxygen reduction reaction in alkaline medium

被引：5

作者：

Nagappan, S. ^{[1
]}

Duraivel, M. ^{[2
]}

Muthuchamy, N. ^{[1
]}

Han, S. H. ^{[3
]}

Mohan, B. ^{[1
]}

Park, S. ^{[3
]}

Prabakar, K. ^{[2
]}

Lee, J-M. ^{[4
]}

Park, K. H. ^{[1
]}

机构：

[1] Pusan Natl Univ, Chem Inst Funct Mat, Dept Chem, 2 Busandaehak-Ro, 63beon-Gil, Busan 46241, South Korea

[2] Pusan Natl Univ, Dept Elect Engn, 2 Busandaehak-Ro, 63beon-Gil, Busan 46241, South Korea

[3] Pusan Natl Univ, Dept Phys, 2 Busandaehak-Ro, 63beon-Gil, Busan 46241, South Korea

[4] Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan 46241, South Korea

来源：

MATERIALS TODAY CHEMISTRY | 2023年 / 30卷

关键词：

Chitosan; Heteroatom-doped carbon; Electrocatalyst; N-DOPED-CARBON; EFFICIENT ELECTROCATALYST; MESOPOROUS CARBON; ACTIVE-SITES; CATALYST; DESIGN; FE3O4; NANOPARTICLES; PERFORMANCE;

D O I：

10.1016/j.mtchem.2023.101534

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Recently, biodegradable polymer-derived and heteroatom-doped carbon-Fe3O4 electrocatalysts have attracted a lot of attention due to their ease of manufacturing, biocompatibility, ease of use, environ-mental friendliness, and ability to induce porosity. Furthermore, as compared to conventional polymers, the nitrogen-containing functional groups in the chitosan-based biopolymer generate cross-linking be-tween the biopolymer and metal sources. We developed a highly stable and hierarchical N-doped car-bon-Fe3O4 electrocatalyst by pyrolysis of the membrane produced from the chitosan gel with 2 (w/v)% of ferric chloride hexahydrate (FeCl3.6H2O) at 700 degrees C, 800 degrees C, and 900 degrees C, respectively. The produced materials were used to execute an electrocatalytic oxygen reduction process under a 0.1 M potassium hydroxide (KOH) electrolyte solution. Similar experiments were also carried out at 3 and 4 (w/v)% of FeCl3.H2O solutions under the pyrolysis of 800 degrees C and 900 degrees C. The working electrodes prepared at 3 and 4 (w/v)% of FeCl3.H2O with chitosan under 800 degrees C and 900 degrees C have demonstrated much improved elec-trocatalytic activity as compared with the electrodes prepared at 2 (w/v)% of FeCl3.H2O with chitosan under various pyrolysis temperatures. These results manifest the effective role of the addition of Fe to the chitosan to activate and enhance the electrocatalytic activity for oxygen reduction reaction (ORR). These results give a broad opportunity to explore the electrocatalyst for further applications. (c) 2023 Elsevier Ltd. All rights reserved.

引用

页数：13

共 45 条

[1] Synthesis of Highly Efficient Bifunctional Ag/Co3O4 Catalyst for Oxygen Reduction and Oxygen Evolution Reactions in Alkaline Medium [J].