Nanostructured TiO2 - morphological and structural changes

F. Armani; M. Gougis; S. A. Impey; A. C. James; K. Lawson; L. Lihrmann; M. Stock; S. Dunn

doi:10.1016/j.matlet.2009.10.022

Nanostructured TiO₂ - morphological and structural changes

F. Armani, M. Gougis, S. A. Impey, A. C. James, K. Lawson, L. Lihrmann, M. Stock, S. Dunn

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Chemical modification of titanium to form TiO₂ is being extensively pursued. We compare the influence of acid pickling and post processing on the crystallinity and morphology of TiO₂ grown by H₂O₂ oxidation. Subsequent oxidation using two concentrations of H₂O₂ (15% and 30% by mass) indicates a variation in the fine surface morphology, apparent at low magnifications. No discernable difference in the quality of TiO₂ that was produced when evaluated by SEM, Raman or XRD (glancing angle and θ:2θ) could be detected between the samples oxidised in different H₂O₂ concentrations. The photoactivity of TiO₂ produced from ultra thin Ti films was confirmed by the photocatalytic reduction of Ag⁺ cations to Ag⁰.

Original language	English
Pages (from-to)	140-143
Number of pages	4
Journal	Materials Letters
Volume	64
Issue number	2
DOIs	https://doi.org/10.1016/j.matlet.2009.10.022
Publication status	Published - 31 Jan 2010
Externally published	Yes

Keywords

Oxidation
Surface analysis
TiO

Access to Document

10.1016/j.matlet.2009.10.022

Cite this

@article{c973fdf511f041459bcc32a53023d030,

title = "Nanostructured TiO2 - morphological and structural changes",

abstract = "Chemical modification of titanium to form TiO2 is being extensively pursued. We compare the influence of acid pickling and post processing on the crystallinity and morphology of TiO2 grown by H2O2 oxidation. Subsequent oxidation using two concentrations of H2O2 (15% and 30% by mass) indicates a variation in the fine surface morphology, apparent at low magnifications. No discernable difference in the quality of TiO2 that was produced when evaluated by SEM, Raman or XRD (glancing angle and θ:2θ) could be detected between the samples oxidised in different H2O2 concentrations. The photoactivity of TiO2 produced from ultra thin Ti films was confirmed by the photocatalytic reduction of Ag+ cations to Ag0.",

keywords = "Oxidation, Surface analysis, TiO",

author = "F. Armani and M. Gougis and Impey, {S. A.} and James, {A. C.} and K. Lawson and L. Lihrmann and M. Stock and S. Dunn",

year = "2010",

month = jan,

day = "31",

doi = "10.1016/j.matlet.2009.10.022",

language = "English",

volume = "64",

pages = "140--143",

number = "2",

}

TY - JOUR

T1 - Nanostructured TiO2 - morphological and structural changes

AU - Armani, F.

AU - Gougis, M.

AU - Impey, S. A.

AU - James, A. C.

AU - Lawson, K.

AU - Lihrmann, L.

AU - Stock, M.

AU - Dunn, S.

PY - 2010/1/31

Y1 - 2010/1/31

N2 - Chemical modification of titanium to form TiO2 is being extensively pursued. We compare the influence of acid pickling and post processing on the crystallinity and morphology of TiO2 grown by H2O2 oxidation. Subsequent oxidation using two concentrations of H2O2 (15% and 30% by mass) indicates a variation in the fine surface morphology, apparent at low magnifications. No discernable difference in the quality of TiO2 that was produced when evaluated by SEM, Raman or XRD (glancing angle and θ:2θ) could be detected between the samples oxidised in different H2O2 concentrations. The photoactivity of TiO2 produced from ultra thin Ti films was confirmed by the photocatalytic reduction of Ag+ cations to Ag0.

AB - Chemical modification of titanium to form TiO2 is being extensively pursued. We compare the influence of acid pickling and post processing on the crystallinity and morphology of TiO2 grown by H2O2 oxidation. Subsequent oxidation using two concentrations of H2O2 (15% and 30% by mass) indicates a variation in the fine surface morphology, apparent at low magnifications. No discernable difference in the quality of TiO2 that was produced when evaluated by SEM, Raman or XRD (glancing angle and θ:2θ) could be detected between the samples oxidised in different H2O2 concentrations. The photoactivity of TiO2 produced from ultra thin Ti films was confirmed by the photocatalytic reduction of Ag+ cations to Ag0.

KW - Oxidation

KW - Surface analysis

KW - TiO

U2 - 10.1016/j.matlet.2009.10.022

DO - 10.1016/j.matlet.2009.10.022

M3 - Article

AN - SCOPUS:70449534605

SN - 0167-577X

VL - 64

SP - 140

EP - 143

JO - Materials Letters

JF - Materials Letters

IS - 2

ER -