Open AccessCubic In2O3 Microparticles for Efficient Photoelectrochemical Oxygen Evolution
Author(s) -
Ming Meng,
Xinglong Wu,
Xiaobin Zhu,
Lun Yang,
Zhixing Gan,
Xiaoshu Zhu,
Lizhe Liu,
Paul K. Chu
Publication year - 2014
Publication title -
the journal of physical chemistry letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.563
H-Index - 203
ISSN - 1948-7185
DOI - 10.1021/jz502316h
Subject(s) - facet (psychology) , oxygen evolution , materials science , chemical vapor deposition , nanotechnology , lithium (medication) , chemical engineering , water splitting , oxygen , silicon , yield (engineering) , electrochemistry , optoelectronics , chemistry , photocatalysis , catalysis , electrode , composite material , endocrinology , engineering , psychology , social psychology , biochemistry , big five personality traits , medicine , organic chemistry , personality
Cubic In2O3 microparticles with exposed {001} facets as well as single morphology and size are produced on a large scale on silicon with a high yield. The morphological evolution during chemical vapor deposition is investigated and the new knowledge enables precise facet cutting. The synthesized Cubic In2O3 microparticles possess superior photoelectrocatalytic activity and excellent chemical and structural stability in oxygen evolution reaction on account of the unique surface structure and electronic band structure of the {001} facets. Our results reveal that it is feasible to promote the photolectrochemical water splitting efficiency of photoanode materials by controlling the growth on specific crystal facets. The technique and concept can be extended to other facet-specific materials in applications such as sensors, solar cells, and lithium batteries.
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