Photocatalytically Driven Dissolution of Macroscopic Nickel Surfaces

School of Engineering

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Nuclear

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RJW_Nickel_Manuscript_Revised
Rights statement: This is the author’s version of a work that was accepted for publication in Corrosion Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Corrosion Science, 131, 2018 DOI: 10.1016/j.corsci.2017.11.018
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https://doi.org/10.1016/j.corsci.2017.11.018
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Available under license: CC BY: Creative Commons Attribution 4.0 International License

Keywords

A. Nickel, B. Potentiostatic, B. Weight loss, C. Anodic dissolution, C. Oxidation

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Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Photocatalytically Driven Dissolution of Macroscopic Nickel Surfaces. / Wilbraham, Richard James ; Boxall, Colin ; Taylor, Robin J.
In: Corrosion Science, Vol. 131, 01.02.2018, p. 137-146.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{21a5c5ef41ae48bd860a5a9489893886,

title = "Photocatalytically Driven Dissolution of Macroscopic Nickel Surfaces",

abstract = "Photocatalytically generated H2O2-driven nickel dissolution has been studied as a novel, secondary waste minimal decontamination process for nuclear process steels. Nickel corrosion experiments in dilute H2SO4 show that at deliberately added [H2O2] ≤ 1 mM, nickel dissolution occurs via formation and dissolution of NiOH groups; at [H2O2] ≥ 10 mM (pseudo-)passivation by NiO prevents this. Furthermore, Nickel also dissolves slowly in mild acid, dissolution that is significantly accelerated in the presence of photogenerated peroxide – suggesting that photocatalytically generated H2O2 could be used to selectively increase dissolution of Ni, and potentially steel, surfaces that normally dissolve only slowly in mild acid.",

keywords = "A. Nickel, B. Potentiostatic, B. Weight loss, C. Anodic dissolution, C. Oxidation",

author = "Wilbraham, {Richard James} and Colin Boxall and Taylor, {Robin J}",

note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Corrosion Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Corrosion Science, 131, 2018 DOI: 10.1016/j.corsci.2017.11.018",

year = "2018",

month = feb,

day = "1",

doi = "10.1016/j.corsci.2017.11.018",

language = "English",

volume = "131",

pages = "137--146",

journal = "Corrosion Science",

issn = "1879-0496",

publisher = "National Assoc. of Corrosion Engineers International",

}

RIS

TY - JOUR

T1 - Photocatalytically Driven Dissolution of Macroscopic Nickel Surfaces

AU - Wilbraham, Richard James

AU - Boxall, Colin

AU - Taylor, Robin J

N1 - This is the author’s version of a work that was accepted for publication in Corrosion Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Corrosion Science, 131, 2018 DOI: 10.1016/j.corsci.2017.11.018

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Photocatalytically generated H2O2-driven nickel dissolution has been studied as a novel, secondary waste minimal decontamination process for nuclear process steels. Nickel corrosion experiments in dilute H2SO4 show that at deliberately added [H2O2] ≤ 1 mM, nickel dissolution occurs via formation and dissolution of NiOH groups; at [H2O2] ≥ 10 mM (pseudo-)passivation by NiO prevents this. Furthermore, Nickel also dissolves slowly in mild acid, dissolution that is significantly accelerated in the presence of photogenerated peroxide – suggesting that photocatalytically generated H2O2 could be used to selectively increase dissolution of Ni, and potentially steel, surfaces that normally dissolve only slowly in mild acid.

AB - Photocatalytically generated H2O2-driven nickel dissolution has been studied as a novel, secondary waste minimal decontamination process for nuclear process steels. Nickel corrosion experiments in dilute H2SO4 show that at deliberately added [H2O2] ≤ 1 mM, nickel dissolution occurs via formation and dissolution of NiOH groups; at [H2O2] ≥ 10 mM (pseudo-)passivation by NiO prevents this. Furthermore, Nickel also dissolves slowly in mild acid, dissolution that is significantly accelerated in the presence of photogenerated peroxide – suggesting that photocatalytically generated H2O2 could be used to selectively increase dissolution of Ni, and potentially steel, surfaces that normally dissolve only slowly in mild acid.

KW - A. Nickel

KW - B. Potentiostatic

KW - B. Weight loss

KW - C. Anodic dissolution

KW - C. Oxidation

U2 - 10.1016/j.corsci.2017.11.018

DO - 10.1016/j.corsci.2017.11.018

M3 - Journal article

VL - 131

SP - 137

EP - 146

JO - Corrosion Science

JF - Corrosion Science

SN - 1879-0496

ER -

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