Photoirradiation-enhanced behavior via morphological manipulation of CoFe2O4/g-C3N4 heterojunction for supercapacitor and CO2 reduction

[Display omitted] •CFO/CN with different morphologies were employed as electrodes for supercapacitor and photocatalyst for CO2 reduction.•CFO/CNS had outstanding light response ability, resulting in an elevated photo-enhanced capacitance.•CFO/CNT presented high activity in PCR to CO, attributing to...

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Bibliographic Details
Published in:Journal of colloid and interface science 2025-02, Vol.679 (Pt A), p.834-845
Main Authors: He, Wei, Liu, Yingpei, Liu, Liang, Han, Huimin, Wang, Zhixiang, Li, Yuguang, Ji, Dong, Shen, Lei, Feng, Yirong, Zhao, Shuangfei, Yang, Jiming, Fang, Zheng, Yang, Zhao, Guo, Kai
Format: Article
Language:English
Subjects:
CO2 reduction
CoFe2O4/g-C3N4
Morphological manipulation
Photoirradiation-enhanced behavior
Supercapacitor
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Summary:[Display omitted] •CFO/CN with different morphologies were employed as electrodes for supercapacitor and photocatalyst for CO2 reduction.•CFO/CNS had outstanding light response ability, resulting in an elevated photo-enhanced capacitance.•CFO/CNT presented high activity in PCR to CO, attributing to strong redox ability and photo-enhanced electron transfer. Regulating the morphology of graphitic carbon nitride (g-C3N4, CN) and constructing CoFe2O4/g-C3N4 (CFO/CN) heterojunctions were adopted in the photocatalytic energy storage and photocatalytic CO2 reduction (PCR). CFO/CNS had outstanding light response ability, while CFO/CNT possessed excellent charge transfer ability. Consequently, CFO/CNT electrode exhibited the highest specific capacitance without light, CFO/CNS electrode showed the most obvious photo-enhanced capacitance behavior with an increase by 21.05 % under light. This was ascribed to the generation and separation of photo-generated carriers, promoting oxidation/reduction reactions. And in PCR, the electron consumption rates of four CFO/CN heterojunctions were CFO/CNT > CFO/BCN > CFO/MCN > CFO/CNS. CFO/CNT presented the highest photocatalytic activity, attributing to the strong redox ability and photo-enhanced electron transfer. This strategy of utilizing CFO/CN heterojunctions to construct photo-enhanced supercapacitor electrodes and photocatalytic CO2 reduction catalysts provided new ideas for energy conversion and storage.
ISSN:0021-9797
1095-7103
1095-7103
DOI:10.1016/j.jcis.2024.09.211