研究目的
To develop a sustainable synthetic route for the production of paracetamol in high purity using silicon‐grafted Ag/AgX/rGO nanocomposites as photocatalysts under visible light irradiation.
研究成果
The silicon‐grafted Ag/AgX/rGO nanocomposites demonstrated highly efficient photocatalytic activity for the reduction of p‐nitrophenol to p‐aminophenol and paracetamol under visible light irradiation. The Ag/AgBr/rGO‐Si hybrid showed the highest efficiency. The study presents a greener approach for the synthesis of paracetamol, featuring fast reaction times, high selectivity, and the potential for industrial application.
研究不足
The study focuses on the photocatalytic reduction under visible light irradiation and the reusability of the catalysts over three cycles. Potential areas for optimization include the scalability of the synthesis process and the long‐term stability of the catalysts under industrial conditions.
1：Experimental Design and Method Selection
The study involved the synthesis of Ag/AgX/rGO nanocomposites via a water/oil microemulsion method, followed by grafting with silicon using trimethylsilyl chloride. The photocatalytic activity was evaluated towards the reduction of p‐nitrophenol to p‐aminophenol and paracetamol under visible light irradiation.
2：Sample Selection and Data Sources
Graphite powder, AgNO3, potassium permanganate, cetyltrimethylammonium chloride (CTAC), cetyltrimethylammonium bromide (CTAB), sulfuric acid, hydrochloric acid, sodium hydroxide, hydrogen peroxide, ethylene glycol, p‐nitrophenol (PNP), trimethylsilyl chloride (TMSCl), acetic anhydride (AC2O), and Sodium boronhydride (NaBH4) were used as received without further purification.
3：List of Experimental Equipment and Materials
UV–Vis spectrophotometer (Perkin Elmer Lambda 40), SEM (ZEISS FE‐SEM ULTRA Plus), XRD (Philips PW1710), FT‐IR spectrophotometer (Nicolet 6700), 1H NMR spectrometer (Bruker Avance DPX), GC/MS (Shimadzu QP5050A).
4：Experimental Procedures and Operational Workflow
The synthesis involved the preparation of graphene oxide (GO) via a modified Hummer's method, reduction to rGO, and then the synthesis of Ag/AgX/rGO nanostructures via water/oil microemulsion. The photocatalytic reduction of PNP to PAP and APAP was monitored by UV–Vis spectroscopy, GC/MS, and 1HNMR.
5：Data Analysis Methods
The photocatalytic performance was evaluated based on the yield and time of reaction for the production of PAP and APAP. The catalysts were characterized using SEM, XRD, FTIR, and their reusability was tested over three cycles.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
