Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures

doi:10.1186/1556-276X-8-2

IMR OpenIR

	Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures
	Zhu,Wancheng 1; Cui,Xili 1; Liu,Xiaofei 1; Zhang,Liyun 1; Huang,Jia-Qi 2; Piao,Xianglan 2; Zhang,Qiang 2
通讯作者	Zhu,Wancheng(zhuwancheng@tsinghua.org.cn) ; Zhang,Qiang(zhang-qiang@mails.tsinghua.edu.cn)
	2013-01-02
发表期刊	Nanoscale Research Letters
ISSN	1556-276X
卷号	8 期号:1
摘要	AbstractHollow or porous hematite (α-Fe2O3) nanoarchitectures have emerged as promising crystals in the advanced materials research. In this contribution, hierarchical mesoporous α-Fe2O3 nanoarchitectures with a pod-like shape were synthesized via a room-temperature coprecipitation of FeCl3 and NaOH solutions, followed by a mild hydrothermal treatment (120°C to 210°C, 12.0 h). A formation mechanism based on the hydrothermal evolution was proposed. β-FeOOH fibrils were assembled by the reaction-limited aggregation first, subsequent and in situ conversion led to compact pod-like α-Fe2O3 nanoarchitectures, and finally high-temperature, long-time hydrothermal treatment caused loose pod-like α-Fe2O3 nanoarchitectures via the Ostwald ripening. The as-synthesized α-Fe2O3 nanoarchitectures exhibit good absorbance within visible regions and also exhibit an improved performance for Li-ion storage with good rate performance, which can be attributed to the porous nature of Fe2O3 nanoarchitectures. This provides a facile, environmentally benign, and low-cost synthesis strategy for α-Fe2O3 crystal growth, indicating the as-prepared α-Fe2O3 nanoarchitectures as potential advanced functional materials for energy storage, gas sensors, photoelectrochemical water splitting, and water treatment.
关键词	Hematite Hierarchical nanoarchitectures Hydrothermal Mesoporous Lithium-ion batteries
DOI	10.1186/1556-276X-8-2
语种	英语
WOS记录号	BMC:10.1186/1556-276X-8-2
出版者	Springer New York
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80450
专题	中国科学院金属研究所
通讯作者	Zhu,Wancheng; Zhang,Qiang
作者单位	1.Qufu Normal University; Department of Chemical Engineering 2.Tsinghua University; Department of Chemical Engineering
推荐引用方式 GB/T 7714	Zhu,Wancheng,Cui,Xili,Liu,Xiaofei,et al. Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures[J]. Nanoscale Research Letters,2013,8(1).
APA	Zhu,Wancheng.,Cui,Xili.,Liu,Xiaofei.,Zhang,Liyun.,Huang,Jia-Qi.,...&Zhang,Qiang.(2013).Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures.Nanoscale Research Letters,8(1).
MLA	Zhu,Wancheng,et al."Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures".Nanoscale Research Letters 8.1(2013).