Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions

IMR OpenIR

	Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions
其他题名	Bifunctional catalysts of Co_3O_4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions
	Tahir Muhammad 1; Mahmood Nasir 4; Zhang Xiaoxue 5; Mahmood Tariq 1; Butt Faheem K 1; Aslam Imran 1; Tanveer M 1; Idrees Faryal 1; Khalid Syed 1; Shakir Imran 6; Yan Yiming 5; Zou Jijun 2; Cao Chuanbao 1; Hou Yanglong 4
	2015
发表期刊	NANO RESEARCH
ISSN	1998-0124
卷号	8 期号:11 页码:3725-3736
摘要	Catalysts for oxygen and hydrogen evolution reactions (OER/HER) are at the heart of renewable green energy sources such as water splitting. Although incredible efforts have been made to develop efficient catalysts for OER and HER, great challenges still remain in the development of bifunctional catalysts. Here, we report a novel hybrid of Co3O4 embedded in tubular nanostructures of graphitic carbon nitride (GCN) and synthesized through a facile, large-scale chemical method at low temperature. Strong synergistic effects between Co3O4 and GCN resulted in excellent performance as a bifunctional catalyst for OER and HER. The high surface area, unique tubular nanostructure, and composition of the hybrid made all redox sites easily available for catalysis and provided faster ionic and electronic conduction. The Co3O4@GCN tubular nanostructured (TNS) hybrid exhibited the lowest overpotential (0.12 V) and excellent current density (147 mA/cm(2)) in OER, better than benchmarks IrO2 and RuO2, and with superior durability in alkaline media. Furthermore, the Co3O4@GCN TNS hybrid demonstrated excellent performance in HER, with a much lower onset and overpotential, and a stable current density. It is expected that the Co3O4@GCN TNS hybrid developed in this study will be an attractive alternative to noble metals catalysts in large scale water splitting and fuel cells.
其他摘要	Catalysts for oxygen and hydrogen evolution reactions (OER/HER) are at the heart of renewable green energy sources such as water splitting. Although incredible efforts have been made to develop efficient catalysts for OER and HER, great challenges still remain in the development of bifunctional catalysts. Here, we report a novel hybrid of Co_3O_4 embedded in tubular nanostructures of graphitic carbon nitride (GCN) and synthesized through a facile, large-scale chemical method at low temperature. Strong synergistic effects between Co_3O_4 and GCN resulted in excellent performance as a bifunctional catalyst for OER and HER. The high surface area, unique tubular nanostructure, and composition of the hybrid made all redox sites easily available for catalysis and provided faster ionic and electronic conduction. The Co_3O_4@GCN tubular nanostructured (TNS) hybrid exhibited the lowest overpotential (0.12 V) and excellent current density (147 mA/cm2) in OER, better than benchmarks IrO_2 and RuO_2, and with superior durability in alkaline media. Furthermore, the Co_3O_4@GCN TNS hybrid demonstrated excellent performance in HER, with a much lower onset and overpotential, and a stable current density. It is expected that the Co_3O_4@GCN TNS hybrid developed in this study will be an attractive alternative to noble metals catalysts in large scale water splitting and fuel cells.
关键词	GRAPHITIC CARBON NITRIDE LITHIUM ION BATTERIES NITROGEN-DOPED GRAPHENE REDUCTION REACTION SYNERGISTIC CATALYST ENERGY-STORAGE PERFORMANCE WATER ELECTROCATALYSTS SUPERCAPACITORS carbon nitride cobalt oxide bifunctional catalyst oxygen evolution reaction hydrogen evolution reaction
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Doctoral Program of the Ministry of Education of China] ; [NSFC-RGC Joint Research Scheme] ; [Beijing Natural Science Foundation] ; [Deanship of Scientific Research at King Saud University through Prolific Research Group Project]
CSCD记录号	CSCD:5609745
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/145306
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.天津大学 3.Collaborat Innovat Ctr Chemistry Sci & Engn Tianjin, Tianjin 300072, Peoples R China 4.北京大学 5.陕西省地震局 6.沙特国王大学
推荐引用方式 GB/T 7714	Tahir Muhammad,Mahmood Nasir,Zhang Xiaoxue,et al. Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions[J]. NANO RESEARCH,2015,8(11):3725-3736.
APA	Tahir Muhammad.,Mahmood Nasir.,Zhang Xiaoxue.,Mahmood Tariq.,Butt Faheem K.,...&Hou Yanglong.(2015).Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions.NANO RESEARCH,8(11),3725-3736.
MLA	Tahir Muhammad,et al."Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions".NANO RESEARCH 8.11(2015):3725-3736.