Influence of electrolyte temperature on the synthesis of iron oxide nanostructures by electrochemical anodization for water splitting

6533b825fe1ef96bd12820d5

RESEARCH PRODUCT

Influence of electrolyte temperature on the synthesis of iron oxide nanostructures by electrochemical anodization for water splitting

B. Lucas-granados Rita Sánchez-tovar José García-antón R.m. Fernández-domene

subject

Materials science Nanostructure Annealing (metallurgy)Iron oxide Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences INGENIERIA QUIMICA symbols.namesake chemistry.chemical_compound Electrolyte temperature Iron oxide Electrochemical anodization Water splitting Hydrogen production Photocurrent Nanoestructures Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electroquímica Fuel Technology Chemical engineering chemistry Photocatalysis symbols Water splitting 0210 nano-technology Raman spectroscopy

description

[EN] Iron oxide nanostructures are an attractive option for being used as photocatalyst in photoelectrochemical applications such as water splitting for hydrogen production. Nanostructures can be obtained by different techniques, and electrochemical anodization is one of the simplest methods which allows high control of the obtained morphology by controlling its different operational parameters. In the present study, the influence of the electrolyte temperature during electrochemical anodization under stagnant and hydrodynamic conditions was evaluated. Temperature considerably affected the morphology of the obtained nanostructures and their photoelectrochemical behavior. Several techniques were used in order to characterize the obtained nanostructures, such as Field Emission Scanning Electron Microscopy (before and after the annealing treatment in order to evaluate the changes in morphology), Raman spectroscopy, photocurrent vs. potential measurements and Mott-Schottky analysis. Results revealed that the nanostructures synthesized at an electrolyte temperature of 25 degrees C and 1000 rpm are the most suitable for being used as photocatalysts for water splitting. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

year	journal	country	edition	language
2018-04-01

10.1016/j.ijhydene.2018.03.046 http://hdl.handle.net/10251/121053