DOI: 10.15125/bath-00644
title: Data set for 'TiO2 photoanodes with exposed {0 1 0} facets grown by aerosol-assisted chemical vapor deposition of a titanium oxo/alkoxy cluster'

description: This data set gathers all the raw data that has been acquired for the preparation of the manuscript. It includes X-Ray diffraction (XRD), X-Ray Photoelectron spectroscopy (XPS), Uv-Vis, Time Resolved Microwave Conductivity (TRMC), Thermogravimetric Analysis (TGA), Raman spectroscopy, Photoelectrochemical measurements (PEC) and (Photo)electrochemical impedance spectroscopy (PEIS) measurements. Specifications of the data collection method (equipment, parameters) are explained in detail in the experimental section of the manuscript.
description: This dataset includes raw data of characterization techniques employed. The following procedures and experimental methods have been employed (see manuscript for more information). 

- X-ray diffraction (XRD) patterns were collected from (10° to 80° (2θ) Bragg-Brentano with a Bruker AXS D8 Advance using Cu Kα (0.154 nm) radiation, 0.023° (2θ) steps and a total integration time of 960 s. 

- Raman spectroscopy was carried out on a Renishaw inVia system using a 532 nm diode-pumped solid-state laser (DPSS) manufactured by Cobolt. The laser beam was focused onto the sample using a 50x long distance objective.

- Thermogravimetric analysis (TGA) was performed using a Setaram Setsys Evolution 16 TGA-DTA-DSC equipment for TiO2 powders (a few mg of TiO2 was scratched from the FTO). TGA of Ti7O4(OEt)20 and Ti(OEt)4 precursors were performed in a glove box under argon atmosphere using a PerkinElmer TGA 4000 apparatus

- Time-resolved microwave conductivity measurements (TRMC): During measurements, a change in the microwave power reflected by the cavity upon excitation with a 3 ns pulse laser was monitored. For these experiments, measurements were performed using a wavelength tunable optical parametric oscillator (OPO) coupled to a diode-pumped Q-switched Nd:YAG 3-ns pulse laser at wavelengths of (350, 650 and 1200) nm. 

- Ultraviolet-visible (UV-Vis) absorption spectra were collected in an Agilent Cary 100 diffuse reflectance UV-Vis spectrophotometer. 

- Photoelectrochemical performance (PEC) performance of photoanodes was evaluated using a CompactStat. potentiostat (Ivium Technologies). Photocurrents were measured under simulated sunlight (AM 1.5G, 100 mWcm 2) from a filtered 300W Xenon lamp source (Lot Quantum Design) or under UV illumination (365 nm, 3.6 mWcm 2) from a ModuLight IM3412 LED light (Ivium Technologies). 

-PEC impedance spectroscopy (PEIS) was carried out under simulated sunlight (AM 1.5G, 100 mW cm-2) at the light open circuit potential (OCP)  of the cell at a frequency range of (105–0.1) Hz with an amplitude of 10 mV. EIS measurements at different potentials were also performed under dark conditions to obtain Mott-Schottky plots. These measurements were carried out at a fixed frequency of (500 and 1000) Hz. 

- Incident photon-to-current efficiency (IPCE) measurements were calculated using the same Xe light source and a triple grating Czerny-Turner monochromator.

- Oxygen (O2) measurements were conducted using a Pyroscience FireStingO2 fibre-optic oxygen meter combined with a TROXROB10 oxygen probe, together with a TDIP temperature sensor to give automatic compensation for minor fluctuation in the PEC cell temperature.
description: All data is included in .txt file. See data colection method for specification of software and equipment used.
description: This data has been organised using the following method: Data acquired using the same equipment is all in the same folder. Within the text file, raw data has been labeled as TiO2_Rose_800 ( sample that was annealed at 800 degrees celsius) and TiO2_Rose_AD ( as-deposited sample). For TRMC data, each text file includes time, signal and mobility values for a specific wavelength using different photon fluxes. 
Refer to manuscript for other specifications.