Department of Polymer Technology, Kamaraj College of Engineering and Technology, Madurai - 625 701, Tamil Nadu, India.
Department of Physics, Hindustan Institute of Technology and Science, Padur, 603103 Chennai, Tamil Nadu, India.
J Hazard Mater. 2021 Jul 15;414:125606. doi: 10.1016/j.jhazmat.2021.125606. Epub 2021 Mar 6.
A novel fluorescent polyimide (PI) made up of perylenetetracarboxylic dianhydride (PTCDAH) and p-phenylenediamine (PPDA) was prepared with or without Ag and VO nanoparticles at 160 °C for 5 h under N atmosphere with vigorous stirring. The influence of nanomaterials on the rate of polymerization (R) was determined. The synthesized PI and PI nanocomposites were characterized to analyse their chemical functionality (FT-IR), surface morphology (FE-SEM) and thermal properties (DSC and TGA). The catalytic reduction of Cr (VI), p-nitrophenol (NP) and rhodamine6G (R6G) dye was analysed using the prepared PI and PI nanocomposites as a catalyst. It was found that the R of PI nanocomposites was higher than pristine PI system. The PI/Ag nanocomposite system exhibited higher degradation temperature (T) and apparent rate constant (k) values towards the reduction of R6G dye.
一种新型荧光聚酰亚胺（PI）由均苯四羧酸二酐（PTCDAH）和对苯二胺（PPDA）组成，在氮气气氛下，于 160°C 下剧烈搅拌 5 小时，可制备得到含或不含 Ag 和 VO 纳米粒子的聚酰亚胺。纳米材料对聚合速率（R）的影响。对合成的 PI 和 PI 纳米复合材料进行了表征，以分析其化学官能团（FT-IR）、表面形态（FE-SEM）和热性能（DSC 和 TGA）。使用制备的 PI 和 PI 纳米复合材料作为催化剂，分析了 Cr（VI）、对硝基苯酚（NP）和罗丹明 6G（R6G）染料的催化还原。结果发现，PI 纳米复合材料的 R 高于原始 PI 体系。PI/Ag 纳米复合材料体系在还原 R6G 染料方面表现出更高的降解温度（T）和表观速率常数（k）值。
