Cellulose nanocrystals (CNCs) have been utilized as a scaffold to immobilize silver nanoparticles (AgNPs) for their potential application as an antibacterial agent and bactericidal filler. However, the present implemented strategies involve synthesis by multi-step and utilize environment non-friendly reducing agents for the deposition of AgNPs on CNCs. Furthermore, the long-time aqueous dispersion stability of prepared AgNPs hybrids is another issue of concern for their efficient utilization as an antibacterial filler. We have developed an environmentally benign one-pot method using a biocompatible polyvinyl+pyrolidone (PVP) as a reducing agent to deposit AgNPs on CNCs. The developed method exhibited the uniform in-situ deposition of AgNPs on CNCs. The formed (CNC-PVP-Ag) nanohybrid displayed excellent long time aqueous colloidal stability (8 months), antibacterial and anti-biofouling activities (12.5 µg/mL and 25 µg/mL for E. coli and S. aureus) which is 4 and 2 times lower than AgNPs (w/o CNCs) prepared by the identical process as of CNC-PVP-Ag. As water-borne microbial contaminations are a global water quality concern, the excellent antibacterial and anti-biofouling activity of CNC-PVP-Ag was applied for water purification. An efficient bacterial filtration performance (100% reduction of Escherichia coli viability) was achieved after two filtration cycles.

纤维素纳米晶体（CNC）已被用作固定银纳米颗粒（AgNPs）的支架，具有潜在的抗菌和杀菌作用。然而，当前实施的策略涉及通过多步合成并且利用环境不友好的还原剂将AgNP沉积在CNC上。此外，制备的AgNPs杂化物的长期水分散稳定性是其有效用作抗菌填料的另一个问题。我们已经开发出一种环境友好的一锅法，该方法使用生物相容性聚乙烯基+吡咯烷酮（PVP）作为还原剂，将AgNP沉积在CNC上。所开发的方法显示出均匀的原位AgNP在CNC上的沉积。所形成的（CNC-PVP-Ag）纳米杂化物显示出优异的长期水性胶体稳定性（8个月），抗菌和抗生物污垢活性（对于大肠杆菌和金黄色葡萄球菌为12.5  µg / mL和25  µg / mL ），为4和通过与CNC-PVP-Ag相同的方法制备的AgNPs（不含CNC）相比低2倍。由于水性微生物污染是全球水质关注的问题，因此CNC-PVP-Ag具有出色的抗菌和抗生物污垢活性，可用于水净化。在两个过滤循环后，获得了有效的细菌过滤性能（大肠杆菌活力降低100％）。