Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 435, Issue -, Pages 8-14Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2014.08.015
Keywords
Silk; Cerium oxide nanoparticle; UV protection; Antibacterial activity
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Funding
- National Program on Key Basic Research Project of China (973 Program) [2013CB127804]
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies
- Southwest University [SWU111071]
- Chongqing International Collaboration Base for Science and Technology (Southwest University)
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing, China
- Fundamental Research Funds for the Central Universities [XDJK2012C005]
- Chongqing Key Natural Science Foundation [cstc2012jjA1137]
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To endow silk with UV-shielding ability and antibacterial activity, CeO2 nanoparticles were immobilized on silk surface via a dip-coating approach without changing silk structure. Surface density of the nanoparticles could be easily adjusted by controlling the number of dip-coating cycle. Enhanced thermal stability of the modified silk is exhibited in thermogravimetric analysis (TGA) and derivative thermogravimetric analysis (DTG). The excellent UV-protection ability and antibacterial property of the CeO2 nanoparticle-coated silk are demonstrated in UV-vis diffuse reflectance spectroscopy and colony-forming capability test, respectively. Based on the data, it can be concluded that CeO2 nanoparticles could be used as a very promising coating material to modify silk for UV-protection and antibacterial applications. (C) 2014 Elsevier Inc. All rights reserved.
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