Sunlight-driven water splitting using hematite nanorod photoelectrodes
An. acad. bras. ciênc
;
90(1,supl.1): 745-762, 2018. tab, graf
Article
in English
| LILACS
| ID: biblio-886943
ABSTRACT
ABSTRACT The efficiency of nanostructures for photoelectrochemical water-splitting is fundamentally governed by the capability of the surface to sustain the reaction without electron trapping or recombination by photogenerated holes. This brief review will summarize the latest progress on hematite, designed with columnar morphology via chemical synthesis, for photoelectrochemical cell application. The columnar morphology efficiently minimizes the number of defects, grain boundaries, and surface traps normally present on the planar morphology. The major drawback related to hole diffusion through the solid/liquid interface was addressed by using high annealing temperature combined with dopant addition. A critical view and depth of understanding of these two parameters were discussed focusing on the molecular oxygen evolution mechanism from the sunlight-driven water oxidation reaction.
Full text:
Available
Index:
LILACS (Americas)
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
2018
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal do ABC/BR
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