Gadore Vishal, Singh Ashish Kumar, Mishra Soumya Ranjan, Ahmaruzzaman Md
Department of Chemistry, National Institute of Technology Silchar, Silchar, Assam, 788010, India.
Sci Rep. 2024 Jan 11;14(1):1118. doi: 10.1038/s41598-024-51618-2.
The current study reported a facile co-precipitation technique for synthesizing novel NiCoS/chitosan nanocomposite. The photocatalytic activity of the prepared nanocomposite was evaluated using congo red (CR) dye as a target pollutant. The central composite design was employed to examine the impact of different reaction conditions on CR dye degradation. This study selected the pH, photocatalyst loading, initial CR concentration and reaction time as reaction parameters, while the degradation efficiency (%) was selected as the response. A desirability factor of 1 suggested the adequacy of the model. Maximum degradation of 93.46% of 35 ppm dye solution was observed after 60 min of visible light irradiation. The response to surface methodology (RSM) is a helpful technique to predict the optimum reaction conditions of the photodegradation of CR dye. Moreover, NiCoS/Ch displayed high recyclability and reusability up to four consecutive cycles. The present study suggests that the prepared NiCoS/chitosan nanocomposite could prove to be a viable photocatalyst for the treatment of dye-contaminated wastewater.
当前的研究报道了一种用于合成新型NiCoS/壳聚糖纳米复合材料的简便共沉淀技术。以刚果红（CR）染料作为目标污染物评估了所制备纳米复合材料的光催化活性。采用中心复合设计来考察不同反应条件对CR染料降解的影响。本研究选择pH值、光催化剂负载量、初始CR浓度和反应时间作为反应参数，而降解效率（%）则作为响应值。合意度因子为1表明模型是充分的。在可见光照射60分钟后，观察到35 ppm染料溶液的最大降解率为93.46%。响应面法（RSM）是预测CR染料光降解最佳反应条件的一种有用技术。此外，NiCoS/Ch显示出高达四个连续循环的高可回收性和可重复使用性。本研究表明，所制备的NiCoS/壳聚糖纳米复合材料可能被证明是一种用于处理染料污染废水的可行光催化剂。
