Metal nanoparticles (MNPs) templated on chitosan-silica (CH-SiO₂) nanocomposite fiber were synthesized via solution based fiber formation followed by the treatment with metal salt solution and NaBH₄. The performance difference of CH-SiO₂ templated with Cu, Co, Ag and Ni nanoparticles for both reduction of 4-nitroaniline (4-NA) and decolorization of Congo red (CR) was investigated. The Cu nanoparticles loaded CH-SiO₂ (Cu/CH-SiO₂), showed high catalytic efficiencies in the reduction of 4-NA and CR, as compared to other loaded MNPs. The apparent rate constants of 6.17 × 10⁻³ sec⁻¹ and 1.68 × 10⁻² sec⁻¹ and turnover frequencies (TOF) of 4.693 hr⁻¹ and 3.965 hr⁻¹ were observed for the reduction of 4-NA and CR, respectively. In addition, the catalytic activity of Cu/CH-SiO₂ catalyst were also examined and found efficient in the reduction of nitrophenols (2-NP, 3-NP and 4-NP), and other dyes. Thus, Cu/CH-SiO₂ with excellent catalytic proficiency can also be employed for other applications.

通过基于溶液的纤维形成，然后用金属盐溶液和NaBH ₄处理，合成了以壳聚糖-二氧化硅（CH-SiO ₂）纳米复合纤维为模板的金属纳米颗粒（MNP）。研究了以Cu，Co，Ag和Ni纳米粒子为模板的CH-SiO ₂在4-硝基苯胺（4-NA）还原和刚果红（CR）脱色方面的性能差异。与其他负载的MNPs相比，负载有CH-SiO ₂（Cu / CH-SiO ₂）的铜纳米颗粒在4-NA和CR的还原中显示出高催化效率。表观速率常数为6.17×10 ^-3 sec ^-1和1.68×10 ^-2 sec^-1和周转4.693 hr的频率（TOF）^-1和3.965小时^-1，观察到4-NA和CR的减少，分别。另外，还检查了Cu / CH-SiO ₂催化剂的催化活性，发现其在还原硝基酚（2-NP，3-NP和4-NP）和其他染料方面有效。因此，具有优异催化能力的Cu / CH-SiO ₂也可以用于其他应用。