Yuan Chun-Gang, Huo Can, Gui Bing, Liu Jing-Fu, Chen Yong-Sheng
Department of Environmental Science & Engineering, North China Electric Power University, Baoding 071000, People's Republic of China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, People's Republic of China.
IET Nanobiotechnol. 2017 Dec;11(8):973-980. doi: 10.1049/iet-nbt.2016.0242.
The aqueous extract of Chinese winter jujube ( Mill. cv Dongzao) was used as reducing and capping agents for the synthesis of silver nanoparticles (AgNPs) for the first time. The resulting AgNPs were characterised by UV/Visible (UV-Vis) spectroscopy, atomic force microscope, transmission electron microscopy, selected area electron diffraction, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray and Fourier transform infrared spectroscopy (FTIR). The colloidal solution of AgNPs gave a maximum UV-Vis absorbance at 446 nm. The synthesised nanoparticles were almost in the spherical shapes with an average size of 11.5 ± 4. 8 nm. FTIR spectra were applied to identify the functional groups which were possibly responsible for the conversion of metal ions into nanoparticles. The results showed that the prepared AgNPs were coated with the biomolecules in the extract. The biosynthesised AgNPs showed a remarkable catalytic activity at room temperature, and they also showed good antibacterial properties against and .
首次将冬枣（Mill. cv Dongzao）水提取物用作合成银纳米颗粒（AgNPs）的还原剂和封端剂。通过紫外/可见（UV-Vis）光谱、原子力显微镜、透射电子显微镜、选区电子衍射、X射线衍射、扫描电子显微镜、能量色散X射线和傅里叶变换红外光谱（FTIR）对所得的AgNPs进行了表征。AgNPs的胶体溶液在446 nm处有最大紫外可见吸光度。合成的纳米颗粒几乎呈球形，平均尺寸为11.5±4.8 nm。应用FTIR光谱来鉴定可能负责将金属离子转化为纳米颗粒的官能团。结果表明，制备的AgNPs被提取物中的生物分子包覆。生物合成的AgNPs在室温下表现出显著的催化活性，并且对[具体细菌名称1]和[具体细菌名称2]也表现出良好的抗菌性能。
