Enhancement of anatase functionalization and photocatalytic self-cleaning properties of keratins by microwave-generated plasma afterglow

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)310-319
Journal / PublicationThin Solid Films
Publication statusPublished - 31 Oct 2013


A microwave-generated plasma afterglow (MWGPA) treatment was applied to keratin fibers to improve their adhesion to anatase nanocrystals by modifying their surface chemical and physical structure.The induced photocatalytic self-cleaning property has significantly been improved by 70% as evidenced by complete stain decomposition in 6 h only.The effects of gas mixtures, gas flow, treatment distance, treatment duration and power flow of the MWGPA treatment on keratin's surface were investigated.The MWGPA-induced alteration of keratin's surface structure resulted in an increase in the uptake of anatase crystals and thus enhanced photocatalytic self-cleaning activities.The contact angle, absorption time, deposition behavior, adhesion and stability of anatase coating of keratin fibers are discussed.The anatase uptake and coating uniformity were characterized quantitatively using Time-of-Flight Secondary Ion Mass Spectrometry.This efficient and low energy plasma surface activation approach demonstrated potential toward the practical application of anatase in keratinous materials.© 2013 Elsevier B.V.All rights reserved.

Research Area(s)

  • Keratins, Microwave-generated plasma afterglow, Self-cleaning, Surface adhesion