Jump to main content
Jump to site search


Single step aerosol assisted chemical vapor deposition of p-n Sn(II)oxide-Ti(IV)oxide nanocomposite thin film electrodes for investigation of photoelectrochemical properties

Abstract

A homogeneous 1:1 solution of tetraisopropoxytitanium (IV) and [Sn(OAc)(dmae)]2 precursors in toluene was used at 450 ˚C, under argon ambience, to deposit p-n type tin(II)oxide-titanium(IV) oxide nanocomposite thin film electrode by single step aerosol assisted chemical vapor deposition (AACVD) technique. The field emission scanning electron microscopy (FESEM), X-ray diffractometry (XRD), Raman scattering, energy-dispersive X-ray spectrometry (EDX), X-ray photoelectron spectroscopy (XPS) and UV–vis absorption spectrophotometry were conducted to characterize the thin film electrode. The deposited thin film electrode was tested for its application towards water photolysis. A comparison of photoelectrochemical properties of the deposited composite SnO-TiO2 electrode with that of pristine TiO2 and SnO electrodes fabricated from tetraisopropoxytitanium (IV) and [Sn(OAc)(dmae)]2, respectively, indicate a higher photocatalytic activity as compared to pristine TiO2, possibly due to incorporation of p-type SnO that effectively promoted the separation of photo-generated charge carriers to rectify electron transfer from SnO to TiO2, leading to separation of electron-hole pairs. The combined synergic effect from p-type SnO towards n-type TiO2, relevance of flower-like morphology and augmented ability to absorb solar light produced a significantly enhanced photocurrent of ~4.3 mA cm-2 at 0.7 V vs. Ag/AgCl electrode. No obvious photocurrent decay was noted for a prolonged stability measured up to 60 min under one-sun illumination of 100 mW cm-2. With such a facile synthetic strategy and enhanced performance profile of the resulting material brings inspiration for producing new p-n type composite photoanodes for better PEC performance using similar strategies.

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Nov 2017, accepted on 09 Feb 2018 and first published on 09 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04606E
Citation: New J. Chem., 2018, Accepted Manuscript
  •   Request permissions

    Single step aerosol assisted chemical vapor deposition of p-n Sn(II)oxide-Ti(IV)oxide nanocomposite thin film electrodes for investigation of photoelectrochemical properties

    R. Naeem, M. A. Ehsan, A. Rehman, Z. H. Yamani, H. Abbas and M. Mazhar, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04606E

Search articles by author

Spotlight

Advertisements