Sunlight-driven water splitting using hematite nanorod photoelectrodes
AUTOR(ES)
SOUZA, FLAVIO L.
FONTE
An. Acad. Bras. Ciênc.
DATA DE PUBLICAÇÃO
2018
RESUMO
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.
Documentos Relacionados
- Sunlight-Driven Dehydrogenative Oxidation Photocatalysis by a Mononuclear Complex Acting as both Chromophore and Catalyst
- Energy evaluation of an evaporative cooling system using water driven ejector
- Hematite and quartz microflotation using millet starch as depressant
- Photocoagulation of the iris using direct sunlight.
- Simulation of Cyclic Dynein-Driven Sliding, Splitting, and Reassociation in an Outer Doublet Pair