论文部分内容阅读
以细菌纤维素(BC)为基底,氯金酸(HAu Cl4)为金前驱体,通过原位还原法制备了BC负载金纳米粒子(Au NPs)复合膜。采用紫外-可见光谱仪、透射电子显微镜、X射线衍射仪、电感耦合等离子发射光谱仪和傅里叶变换红外光谱仪对复合膜的结构和性质进行了表征,并通过对硝基苯酚(4-NP)催化还原反应来评价Au NPs-BC复合催化剂的催化性能。研究结果表明:复合膜上Au NPs的粒径大小为(5.30±1.23)nm,其反应速率常数高达5.09×10-3s-1,Au NPs-BC催化剂表现出优异的催化活性及重复稳定性。
Based on bacterial cellulose (BC), HAuCl4 was used as gold precursor to prepare BC loaded gold nanoparticles (Au NPs) composite films by in situ reduction method. The structure and properties of the composite membranes were characterized by ultraviolet-visible spectroscopy, transmission electron microscopy, X-ray diffraction, inductively coupled plasma atomic emission spectroscopy and Fourier transform infrared spectroscopy. Reduction reaction to evaluate the catalytic performance of Au NPs-BC composite catalyst. The results show that the Au NPs on the composite membrane have a particle size of (5.30 ± 1.23) nm and a high reaction rate constant of 5.09 × 10-3s-1. The Au NPs-BC catalysts exhibit excellent catalytic activity and reproducibility.