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An investigation into the chemistry of electrodeposited lanthanum hydroxide-polyethylenimine films

Carley, Albert Frederick, Davies, Philip Rosser, Hurcom, Jamie and Macsorley, Jenna 2011. An investigation into the chemistry of electrodeposited lanthanum hydroxide-polyethylenimine films. Thin Solid Films 10.1016/j.tsf.2011.11.087

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Abstract

The electrodeposition of lanthanum hydroxide films onto nickel substrates in the presence of polyethylenimine (PEI) has been studied by infrared spectroscopy, x-ray photoelectron spectroscopy and atomic force microscopy with the aim of exploring the effectiveness of the technique and the chemistry of the deposited films. Maximum deposition rates were recorded for low concentrations of PEI with rates decreasing at higher PEI concentrations largely because of the poor structural integrity of the deposited films. Similarly, extending the deposition times did not improve film coverage as thicker films adhered less well to the nickel substrate. The deposited films were shown to contain co-deposited PEI with the concentration remaining constant within the films during deposition but changing linearly with PEI concentration in the depositing solution.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Elsevier
ISSN: 0040-6090
Last Modified: 17 Jun 2017 03:24
URI: http://orca.cf.ac.uk/id/eprint/13772

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