Al-Hobaib Abdullah S, Al-Sheetan Khalid M, Shaik Mohammed Rafi, Al-Andis Naser M, Al-Suhybani M S
Nuclear Science Research Institute, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia.
Department of Chemistry, College of Science, King Saud University, P.O. Box. 2455, Riyadh, 11451, Kingdom of Saudi Arabia.
Nanoscale Res Lett. 2015 Dec;10(1):379. doi: 10.1186/s11671-015-1080-3. Epub 2015 Sep 29.
The objective of this work was to prepare and characterize a new and highly efficient modified membrane by in situ interfacial polymerization on porous polysulfone supports. The process used m-phenylenediamine and trimesoyl chloride in hexane, incorporating silver oxide Ag2O nanoparticles of varied concentrations from 0.001 to 0.1 wt%. Ag2O nanoparticles were prepared at different sizes varying between 20 and 50 nm. The modified membranes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), transmission electron microscopy (TEM), and contact angle measurement. The results showed a smooth membrane surface and average surface roughness from 31 to 74 nm. Moreover, hydrophilicity improved and the contact angle decreased to 41° at 0.009 wt% silver oxide. The performances of the developed membranes were investigated by measuring permeate fluxes and salt rejection capability by passing NaCl solutions (2000 ppm) through the membranes at 225 psi. The results showed that the flux increased from 26 to 40.5 L/m(2) h, while the salt rejection was high, at 99 %, with 0.003 wt% Ag2O nanoparticles.
这项工作的目的是通过在多孔聚砜载体上进行原位界面聚合来制备和表征一种新型高效的改性膜。该过程使用间苯二胺和均苯三甲酰氯在己烷中，并掺入浓度从0.001到0.1 wt%不等的氧化银Ag2O纳米颗粒。制备的Ag2O纳米颗粒尺寸不同，在20到50纳米之间变化。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散X射线光谱（EDX）、原子力显微镜（AFM）、透射电子显微镜（TEM）和接触角测量对改性膜进行了表征。结果显示膜表面光滑，平均表面粗糙度为31至74纳米。此外，亲水性得到改善，在氧化银含量为0.009 wt%时接触角降至41°。通过在225 psi下使NaCl溶液（2000 ppm）通过膜来测量渗透通量和脱盐能力，从而研究了所制备膜的性能。结果表明，在Ag2O纳米颗粒含量为0.003 wt%时，通量从26增加到40.5 L/m(2) h，同时脱盐率很高，达到99%。
