Abdi Mahnaz M, Mohd Azli Nur Farhana Waheeda, Lim Hong Ngee, Tahir Paridah Md, Karimi Gholamreza, Hoong Yeoh Beng, Khorram Mohammad
Department of Chemical Engineering, Shiraz University Shiraz 7134851154 Iran
Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia.
RSC Adv. 2018 Jan 15;8(6):2978-2985. doi: 10.1039/c7ra13378b. eCollection 2018 Jan 12.
In this research, tannin (TA) extracted from and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), were used to modify and enhance the physical and electrochemical properties of a polypyrrole (PPy) composite. Brunauer-Emmett-Teller (BET) analysis presented a higher degree of surface area and porosity for the PPy/TA/CTAB nanocomposite. A highly porous and rod like structure with a lumpy surface was observed for PPy/TA prepared in the presence of CTAB by Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). Cyclic voltammograms of the modified SPE electrode using PPy/TA/CTAB displayed an enhanced current response compared to the electrode modified with only PPy or PPy/TA. Electrochemical Impedance Spectroscopy (EIS) exhibited a lower value of charge transfer resistance ( ) and higher electron transfer for the modified electrode, making the nanocomposite a promising candidate for biosensor application.
在本研究中，从[具体来源未给出]提取的单宁（TA）和阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）被用于修饰和增强聚吡咯（PPy）复合材料的物理和电化学性能。布鲁诺尔-埃米特-泰勒（BET）分析表明，PPy/TA/CTAB纳米复合材料具有更高的比表面积和孔隙率。通过场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）观察到，在CTAB存在下制备的PPy/TA具有高度多孔且表面呈块状的棒状结构。使用PPy/TA/CTAB修饰的SPE电极的循环伏安图显示，与仅用PPy或PPy/TA修饰的电极相比，其电流响应增强。电化学阻抗谱（EIS）显示修饰电极的电荷转移电阻（ ）值较低且电子转移较高，这使得该纳米复合材料成为生物传感器应用的有前途的候选材料。
