The development of novel bio-based heterogeneous catalytic systems with easy separation and recyclability is significant in chemical synthesis. In this work, palladium nanoparticles have been successfully anchored onto the surface of MnO₂ modified cotton fabric via a facile method for synthesizing Pd(0)@MnO₂–CF catalyst. Several characterization methods, including field emission gun scanning electron microscopy (FEG-SEM), energy-dispersive X-ray electron microscopy (EDX), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), inductively coupled plasma atomic emission spectroscopy (ICP-AES) and X-ray photoelectron microscopy (XPS), were used to confirm the immobilization of palladium nanoparticles on to the cotton fabric. The catalytic activity of the synthesized catalyst, Pd(0)@MnO₂–CF, was evaluated for oxidation of alcohols, oxidative deprotection of oximes and degradation of methyl orange, for which the catalyst demonstrated good activity and selectivity. The developed catalyst is easy to handle and can be separated from the reaction mixture using laboratory tweezers. It eliminates the need to employ other tedious work-up procedures. Further, the reusability of Pd(0)@MnO₂–CF was studied by performing oxidation of 4-bromobenzyl alcohol and oxidative deprotection of 4-bromobenzaldehyde oxime consecutively five times, and a minor loss in catalytic activity was observed suggesting high stability of the developed catalyst.

开发易于分离和可回收的新型生物基多相催化系统在化学合成中具有重要意义。在这项工作中，通过一种简便的合成Pd(0)@MnO ₂ –CF催化剂的方法，将钯纳米颗粒成功地固定在MnO ₂改性棉织物的表面上。多种表征方法，包括场发射枪扫描电子显微镜 (FEG-SEM)、能量色散 X 射线电子显微镜 (EDX)、X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、热重分析 (TGA) ）、电感耦合等离子体原子发射光谱（ICP-AES）和 X 射线光电子显微镜（XPS）用于确认钯纳米颗粒在棉织物上的固定。合成的催化剂Pd(0)@MnO ₂ –CF对醇氧化、肟氧化脱保护和甲基橙降解进行了催化活性评价，表现出良好的活性和选择性。所开发的催化剂易于处理，并且可以使用实验室镊子从反应混合物中分离出来。它消除了采用其他繁琐的后处理程序的需要。此外，通过连续五次进行4-溴苯甲醇的氧化和4-溴苯甲醛肟的氧化脱保护，研究了Pd(0)@MnO ₂ –CF的可重复使用性，观察到催化活性的轻微损失，表明其具有较高的稳定性。开发出催化剂。