Self-standing photocatalytic materials based on transition-metal decorated electrospun fiber mat have attracted considerable attention for photodegradation of toxic refractory organic pollutants in the environment. In this study, poly(N-vinylpyrrolidone)/copper(II) nitrate fibers (Cu/PVP-F) were prepared by electrospinning of PVP/Cu(NO₃)₂ solution followed by crosslinking using microwave-induced argon plasma (MAP) to produce Cu/Cu₂O composites on the surface of fibers. The optimization for the electrospinning fibers was conducted such that the optimized electrospun composite fibers exhibited excellent visible light photocatalytic activity, corresponding to the narrowest band gap energy based on photoluminescence analyses. Moreover, the experimental results showed that the electro-spinning Cu/PVP-F fibers treated with MAP revealed the highest rate of photodegradation efficacy toward methyl orange (MO) and 4-nitrophenol (4- NP), that could be employed in the subsequent photocatalysis cycles with good recovery.

基于过渡金属装饰的电纺纤维毡的自立式光催化材料在环境中对有毒的难降解有机污染物的光降解方面引起了广泛的关注。在这项研究中，通过电纺PVP / Cu（NO ₃）₂溶液，然后使用微波诱导的氩等离子体（MAP）进行交联，制备了聚（N-乙烯基吡咯烷酮）/铜（II）硝酸纤维（Cu / PVP-F ）生产Cu / Cu ₂纤维表面上的O复合材料。进行电纺纤维的优化，以使优化的电纺复合纤维表现出优异的可见光光催化活性，对应于基于光致发光分析的最窄带隙能量。此外，实验结果表明，经MAP处理的电纺Cu / PVP-F纤维对甲基橙（MO）和4-硝基苯酚（4- NP）的光降解效率最高，可用于后续研究。光催化循环具有良好的恢复性。