期刊论文

Hu, Jie(hujie_gtq@163.com)

英文

Chemical Engineering Journal

1385-8947

2023

452

139346

10.1016/j.cej.2022.139346

The synthesis mechanism of Fe2O3, Co3O4, CoFe2O4 and Co3O4-CoFe2O4 were illustrated in Fig. 1a. The formation procedure can be described as two main steps. In the first stage, the uniform iron-cobalt glycerate spheres with different molar ratios (1:0, 0:1, 1:2 and 2:1) as the precursor are generated by applying a concise solvothermal reaction. In the second key stage, the generation of various structures was realized by converting FeCo-glycerate solid spheres into core–shell or hollow spheres

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In this study, the fabrication process and the gas sensing performance toward ammonia of core-shelled Co3O4-CoFe2O4 heterojunction composites with the abundant mesoporous structures were presented detailedly. The hierarchical Co3O4-CoFe2O4 was prepared by using Fe-Co glycerate as a precursor combined with a subsequent thermolysis method. The well-designed core-shelled heterojunction architecture was investigated through SEM and TEM. Apparently, the internal and external structure of the glycerate-derived sensing materials can be efficiently reg...