Abstract
CuO nanoflakes with dimension of 50–150 nm × 200 nm were successfully immobilized on the surface of cellulose fibers by an ultrafast (5 min reaction time), scalable microwave assisted method. The high retention of CuO up to 70% has been phenomenal considering that the immobilization was carried out in the absence of any linker, binder or retention aid. Retention of almost 87% of the immobilized CuO nanostructures even after five consecutive recyclability steps has been unprecedented. The antimicrobial activities of the paper matrices have been investigated by deactivating both G. trabeum and E. coli. The CuO immobilized paper matrices have desisted the growth of G. trabeum up to 28 days and completely deactivated E. coli (CFU in order of 107) in the presence of visible light with exposure time of 2 h only.
Highlights
Paper, one of the first manmade engineered materials, have travelled through various ups and downs in its journey through the history (Matsubara et al 1995)
The CuO immobilized paper matrices have desisted the growth of G. trabeum for upto 28 days, which is phenomenal and completely deactivated E. coli of the CFU in order of 10 7 in the presence of visible light with exposure time of 2 h only
While carrying out thermogravimetric analysis (TGA) in argon atmosphere (Fig. 2), it has been observed that around 12 % is remaining even in the blank paper after burning at 800 oC, this is due to the carbonization of the organic mass as the TGA has been carried out in the argon atmosphere
Summary
One of the first manmade engineered materials, have travelled through various ups and downs in its journey through the history (Matsubara et al 1995). CuO nanoflakes with dimension of 50-150 nm × 200 nm were successfully immobilized on the surface of cellulose fibers by an ultrafast (5 min reaction time), scalable microwave assisted method. The antimicrobial activities of the paper matrices have been investigated by deactivating both G. trabeum and E. coli .
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