A novel, fast-responding, indicator ink for thin film photocatalytic surfaces

A. Mills; J. Hepburn; M. McFarlane

doi:10.1021/am9001502

A novel, fast-responding, indicator ink for thin film photocatalytic surfaces

A. Mills, J. Hepburn, M. McFarlane

Pure And Applied Chemistry

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

12 Citations (Scopus)

Abstract

A new photocatalyst indicator ink based on methylene blue (MB) is described that allows the presence and activity of a thin (15 nm) photocatalytic film to be assessed in seconds. The ink is very stable (shelf life > 6 months) and the color change (blue to colorless) striking. The ink utilizes a sacrificial electron donor, glycerol, to trap the photogenerated holes, leaving the photogenerated electrons to react with MB to produce its reduced, leuco, form (LMB). The efficacy of the MB ink is due to the presence of acid in its formulation, which curtails significantly the otherwise usual, rapid reoxidation of LMB by ambient O2.

Original language	English
Pages (from-to)	1163-1165
Number of pages	2
Journal	ACS Applied Materials and Interfaces
Volume	1
Issue number	6
DOIs	https://doi.org/10.1021/am9001502
Publication status	Published - 19 May 2009

Keywords

photocatalysis
methylene blue
photocatalyst indicator ink
photogenerated electrons

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10.1021/am9001502

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title = "A novel, fast-responding, indicator ink for thin film photocatalytic surfaces",

abstract = "A new photocatalyst indicator ink based on methylene blue (MB) is described that allows the presence and activity of a thin (15 nm) photocatalytic film to be assessed in seconds. The ink is very stable (shelf life > 6 months) and the color change (blue to colorless) striking. The ink utilizes a sacrificial electron donor, glycerol, to trap the photogenerated holes, leaving the photogenerated electrons to react with MB to produce its reduced, leuco, form (LMB). The efficacy of the MB ink is due to the presence of acid in its formulation, which curtails significantly the otherwise usual, rapid reoxidation of LMB by ambient O2.",

keywords = "photocatalysis, methylene blue, photocatalyst indicator ink, photogenerated electrons",

author = "A. Mills and J. Hepburn and M. McFarlane",

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AU - Mills, A.

AU - Hepburn, J.

AU - McFarlane, M.

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Y1 - 2009/5/19

N2 - A new photocatalyst indicator ink based on methylene blue (MB) is described that allows the presence and activity of a thin (15 nm) photocatalytic film to be assessed in seconds. The ink is very stable (shelf life > 6 months) and the color change (blue to colorless) striking. The ink utilizes a sacrificial electron donor, glycerol, to trap the photogenerated holes, leaving the photogenerated electrons to react with MB to produce its reduced, leuco, form (LMB). The efficacy of the MB ink is due to the presence of acid in its formulation, which curtails significantly the otherwise usual, rapid reoxidation of LMB by ambient O2.

AB - A new photocatalyst indicator ink based on methylene blue (MB) is described that allows the presence and activity of a thin (15 nm) photocatalytic film to be assessed in seconds. The ink is very stable (shelf life > 6 months) and the color change (blue to colorless) striking. The ink utilizes a sacrificial electron donor, glycerol, to trap the photogenerated holes, leaving the photogenerated electrons to react with MB to produce its reduced, leuco, form (LMB). The efficacy of the MB ink is due to the presence of acid in its formulation, which curtails significantly the otherwise usual, rapid reoxidation of LMB by ambient O2.

KW - photocatalysis

KW - methylene blue

KW - photocatalyst indicator ink

KW - photogenerated electrons

UR - http://dx.doi.org/10.1021/am9001502

U2 - 10.1021/am9001502

DO - 10.1021/am9001502

M3 - Article

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EP - 1165

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

SN - 1944-8244

IS - 6

ER -

A novel, fast-responding, indicator ink for thin film photocatalytic surfaces

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Keywords

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