Al-Zaban Mayasar I, Mahmoud Mohamed A, AlHarbi Maha A
Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
Molecular Markers Laboratory, Plant Pathology Research Institute, Agricultural Research Center, Giza 12619, Egypt.
Saudi J Biol Sci. 2021 Mar;28(3):2007-2013. doi: 10.1016/j.sjbs.2021.01.003. Epub 2021 Jan 15.
This investigation displayed the good catalytic activity of silver nanoparticles (AgNPs) on the reduction of methylene blue dye. During this work, Honey was chosen for environmentally reducing and stabilizing agents for preparation of silver nanoparticles then characterized these nanoparticles by ultraviolet-visible spectroscopy (UV-Vis), functional biomolecules were confirmed by Fourier transform infrared spectroscopy (FTIR). Via transmission electron microscopy (TEM), the size and shape of silver nanoparticles revealed that the particles are spherical and monodispersed without major agglomeration, the particle size ranging from 5 to 25 nm, in addition, the largest particle density levels are 5-10 nm, ZETA Seizers studied the size distribution of the colloidal solution. UV/Vis spectrophotometer and HPLC were used to study and analyze the degradation performance of silver nanoparticles on methylene blue. The results show that 92% of methylene blue has been degraded after 72 h. additionally, several new peaks have appeared after treatment of the samples by using HPLC.
本研究展示了银纳米颗粒（AgNPs）对亚甲基蓝染料还原反应具有良好的催化活性。在此过程中，选用蜂蜜作为环境友好型还原剂和稳定剂来制备银纳米颗粒，然后通过紫外可见光谱（UV-Vis）对这些纳米颗粒进行表征，通过傅里叶变换红外光谱（FTIR）确认功能生物分子。通过透射电子显微镜（TEM），银纳米颗粒的尺寸和形状表明颗粒呈球形且单分散，无明显团聚，粒径范围为5至25纳米，此外，最大颗粒密度水平为5至10纳米，ZETA粒度分析仪研究了胶体溶液的尺寸分布。使用紫外/可见分光光度计和高效液相色谱（HPLC）研究和分析银纳米颗粒对亚甲基蓝的降解性能。结果表明，72小时后92%的亚甲基蓝已被降解。此外，使用HPLC处理样品后出现了几个新峰。
