Dataset for 'PrFeO3 photocathodes prepared through spray pyrolysis'

Dataset for 'PrFeO3 photocathodes prepared through spray pyrolysis'

PrFeO3 (PFO) has been shown to be an active photochemical water reduction in slurry reactors, but has yet to be shown as a photocathode for photoelectrochemical water reduction, to the best of our knowledge. The work herein describes the fabrication of active PFO photocathodes through a spray pyrolysis method with subsequent calcination at 500, 600 and 700˚C. The films were prepared on fluorine-doped tin oxide aluminoborosilcate glass for the application of solar water reduction. This dataset includes characterisation of these PFO films including, XRD, XPS, photoelectrochemical measurements and electronic impedance spectroscopy measurements. Datasets are also included from those incorporated within the supplementary information.

Subjects:

Cite this dataset as:
Freeman, E., Kumar, S., Thomas, S., Pickering, H., Fermin, D., Eslava, S., 2020. Dataset for 'PrFeO3 photocathodes prepared through spray pyrolysis'. Bath: University of Bath Research Data Archive. Available from: https://doi.org/10.15125/BATH-00708.

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Data

Figure%201%20%2 ... %20dataset.xlsx
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X-ray diffraction data for films PFO_500˚C, _600˚C and _700˚C. Handling: Plot 2theta (x-axis) against intensity (y-axis)

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ECSA measurements with standard deviations. Handling: Plot scan rate (x-axis) against current density.

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PEC and IPCE measurements Handling: For PEC measurements plot applied potential (x-axis) against photocurrent density. For IPCE measurements plot wavelength (x-axis) IPCE.

Figure%206%20%2 ... %20dataset.xlsx
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Electronic impedance measurements (EIS) and RC limited and experimental photocurrent measurements. Handling: EIS-plot Z' (x-axis) against Z'' (y-axis) RC limited and experimental transients-plot time (x-axis) against current density (y-axis)

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XPS, UV-Vis, ECSA, Mott-Schottky and PEC measurements Handling: For XPS spectra plot binding energy (x-axis) against intensity. For UV-Vis plot energy (x-axis) against (FR*eV)^2 (y-axis). For PEC/CV measurements plot applied potential (x-axis) against photocurrent density (y-axis). For Mott-Schottky plot potential (x-axis) against 1/C2 (y-axis).

Creators

Emma Freeman
University of Bath

Santosh Kumar
University of Bath

Sophie Thomas
University of Bath

Hayley Pickering
University of Bath

David J. Fermin
University of Bristol

Salvador Eslava
Imperial College London

Coverage

Collection date(s):

From 3 October 2016 to 1 October 2019

Documentation

Data collection method:

Characterisation of PrFeO3 films on FTO-ABS glass slides were obtained. Including X-ray diffraction, UV-Vis and photoelectrochemical measurements.

Technical details and requirements:

XRD diffraction patterns were obtained from a STOE STADI P double setup, equipped with Mythen detectors, using pure Cu-Kα1 radiation (λ= 1.540562 Å) with a range of 2θ from 20 to 80°. PEC measurements were carried out in a three electrode PEC quartz cell with working electrode, Pt counter electrode, an Ag/AgCl reference electrode, and a 0.1 M Na2SO4 electrolyte of pH 12. A 300 W Xe lamp equipped with an AM1.5G solar simulator filter (LOT Quantum Design) was used with an 8mm-diameter masked area. The intensity was measured to be 100 mW cm-2 determined by the distance to the working electrode. An external potential (provided by Ivium CompactStat) was linearly swept from 0.2 to -1.12 VAg/AgCl at a rate of 20 mVs-1 under chopped solar illumination. Stability measurements were held at held at 0.43 VRHE for 1 h. IPCE measurements were conducted at 0.29 VRHE. Electronic impedance spectroscopy (EIS) measurements for RC limited current calculations were carried out in 0.1 M NaSO4 with a DC of -0.3 VAgCl and AC potential frequency range 10^5-0.1 Hz with an amplitude of 5 mV under dark conditions. Experimental transient photocurrents were obtained under chopped illumination (1 sun) at 0.3 VAgCl with a data collection interval of 0.01 s. Electrochemically active surface area (ECSA) measurements were carried out by conducting cyclic voltammetry (CV) between 0.2 to -0.3 VAgCl at varying scan rates between 10 and 200 mV s-1. The difference in anodic and cathodic current densities recorded at -0.03 VAgCl was plotted against scan rate. The double layer capacitance (Cdl) can be calculated by dividing the gradient by two, where Cdl is directly proportional to the ECSA. Mott-Shottky plots were created by conducting EIS measurements to calculate 1/C^2, and then plotting against potential.

Funders

Engineering and Physical Sciences Research Council (EPSRC)
https://doi.org/10.13039/501100000266

Nanostructured Metal Oxides for Solar Fuels
EP/P008097/1

Publication details

Publication date: 10 February 2020
by: University of Bath

Version: 1

DOI: https://doi.org/10.15125/BATH-00708

URL for this record: https://researchdata.bath.ac.uk/id/eprint/708

Related articles

Freeman, E., Kumar, S., Thomas, S. R., Pickering, H., Fermin, D. J. and Eslava, S., 2020. PrFeO 3 Photocathodes Prepared Through Spray Pyrolysis. ChemElectroChem, 7(6), pp.1365-1372. Available from: https://doi.org/10.1002/celc.201902005.

Contact information

Please contact the Research Data Service in the first instance for all matters concerning this item.

Contact person: Salvador Eslava

Departments:

Faculty of Engineering & Design
Chemical Engineering