Hierarchical hollow spheres composed of ultrathin Fe2O3 nanosheets for lithium storage and photocatalytic water oxidation

Zhu, Jixin and Yin, Zongyou and Yang, Dan and Sun, Ting and Yu, Hong and Hoster, Harry E. and Hng, Huey Hoon and Zhang, Hua and Yan, Qingyu (2013) Hierarchical hollow spheres composed of ultrathin Fe2O3 nanosheets for lithium storage and photocatalytic water oxidation. Energy and Environmental Science, 6 (3). pp. 987-993. ISSN 1754-5692

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Abstract

Hollow hierarchical spheres self-organized from the ultrathin nanosheets of alpha-Fe2O3 were prepared by a simple process. These ultrathin nanosheet subunits possess an average thickness of around 3.5 nm and show preferential exposure of (1 1 0) facets. Their Li ion storage and visible-light photocatalytic water oxidation performance are tested. Such hierarchical nanostructures show high Li storage properties with good cycling stability and excellent rate capabilities. The water oxidation catalytic activity is 70 mu mol h(-1) g(-1) for O-2 evolution under visible light irradiation and can be maintained for 15 hours. The structural features of these alpha-Fe2O3 nanocrystals are considered to be important to lead to the attractive properties in both Li storage and photocatalytic water oxidation, e. g. hollow interior, ultrathin thickness and largely exposed active facets.

Item Type:
Journal Article
Journal or Publication Title:
Energy and Environmental Science
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
72641
Deposited By:
Deposited On:
27 Jan 2015 11:25
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jul 2020 01:57