AQUEOUS-BASED FORMATION OF GOLD NANOPARTICLES ON SURFACE-MODIFIED COTTON TEXTILES

A facile and environmental friendly route has been developed to synthesize gold nanoparticles (AuNPs) by using amine stabilizers and N-vinyl pyrrolidone (NVP) as the reductant in an aqueous medium. This synthetic concept can be applied to the formation of AuNPs on normal cotton fibers via in situ surface modification of the cotton fibers by (3-aminopropyl) triethoxysilane (ATS) followed by nanoparticle formation. This scheme produces red AuNP-dyed cotton textiles. Surface treatment of the cotton textiles by ATS was found to be crucial for the formation of nano-Au. X-ray photoelectron spectroscopy (XPS), diffused reflectance UV-visible spectroscopy (UV-vis) and energy dispersive X-ray (EDX) were used to investigate the fiber surfaces. The distribution of AuNPs as well as surface treatment agent on the fiber surface was located by time of flight secondary ion mass spectroscopy (TOF-SIMS).