期刊
CHEMISTRY OF MATERIALS
卷 34, 期 17, 页码 7692-7704出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.2c00684
关键词
-
资金
- Department of Energy, Office of Basic Energy Sciences, Division of Chemical, Biological, and Geological Sciences [DE-FG02-86ER13622.A000]
- NSF [1126100]
Mesoporous transition metal ferrites with interconnected networks and high surface areas exhibit improved characteristics in catalytic applications, with NiFe2O4 showing high activity in the electrochemical oxygen evolution reaction.
Nanocrystalline and monomodal pore size meso-porous transition metal oxides have attracted considerable attention because of their interconnected networks and high surface areas. These materials have demonstrated improved characteristics such as electron transport, dye loading, electrolyte permeation, and oxidative capabilities when compared to those of typical nanostructured catalysts when used for different catalytic applications. Of particular interest are ferrites that have demonstrated roles in biomedical and magnetic devices, recharge-able batteries, sensors, catalysis, and water treatment. In addition, microwave hydrothermal synthesis is an attractive method due to its simplicity, rapid synthesis rate, and ease of operation. This paper details the synthesis of mesoporous first-row transition metal ferrites. M2+ (Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+) ferrite synthesis was systematically studied using a Biotage Initiator microwave apparatus, and the effects of reaction time and initial M(2+ )concentration on the crystal structure, morphology, composition, and magnetic and catalytic activities were evaluated. Various characterization techniques were utilized to study the synthesis mechanism and characteristics of the materials. These materials were then applied to the electrochemical oxygen evolution reaction, where NiFe2O4 showed high activity vs other ferrites with a low overpotential of 278 mV at 10 mA/cm(2).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据