Mahlangu, Thembisile PDas, RAbia, LKOnyango, MRay, Suprakas SMaity, Arjun2019-06-252019-06-252019-01Mahlangu, T.P. (et.al). 2019. Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite. Chemical Engineering Journal, vol 360, pp 423-4341385-8947https://www.sciencedirect.com/science/article/pii/S1385894718324665https://doi.org/10.1016/j.cej.2018.11.231http://hdl.handle.net/10204/11007Copyright: 2019 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website.A magnetic nanocomposite (NC), Fe3O4@PPy-MAA, was synthesised via in situ oxidative polymerisation of the pyrrole monomer in a thioglycolic acid (mercaptoacetic acid) solution (as a dopant), in the presence of iron oxide (Fe3O4). The newly developed NC was characterised using ATR-FTIR, FE-SEM, HR-TEM, XRD, TGA, BET and VSM. The performance of the NC for silver ion (Ag+) adsorption was carried out through batch studies as a function of pH, adsorbent dose, temperature and initial Ag+ concentration. The maximum adsorption capacity of Ag+ was determined to be 806.4 mg/g at 25 °C using Langmuir adsorption isotherm at a solution pH of 5.6. The kinetics studies indicated that the Ag+ adsorption onto the Fe3O4@PPy-MAA NC surface was rapid and was well described by the pseudo-second-order kinetics equation. Also, the present study emphasised the reusability of Ag+-adsorbed waste material for the disinfection of microorganisms, which was demonstrated through the excellent antimicrobial activity of the NC against Escherichia coli in both synthetic and natural water samples. Therefore, the as prepared Fe3O4@PPy-MAA NC has an excellent ability to successfully remove Ag+ ions from aqueous solutions and subsequently, the Ag-loaded waste material could be used as a potential candidate disinfectant.enMagnetic nanocompositeThioglycolic acidSilver adsorptionAntimicrobial activityE. coliArticleMahlangu, T. P., Das, R., Abia, L., Onyango, M., Ray, S. S., & Maity, A. (2019). Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite. http://hdl.handle.net/10204/11007Mahlangu, Thembisile P, R Das, LK Abia, M Onyango, Suprakas S Ray, and Arjun Maity "Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite." (2019) http://hdl.handle.net/10204/11007Mahlangu TP, Das R, Abia L, Onyango M, Ray SS, Maity A. Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite. 2019; http://hdl.handle.net/10204/11007.TY - Article AU - Mahlangu, Thembisile P AU - Das, R AU - Abia, LK AU - Onyango, M AU - Ray, Suprakas S AU - Maity, Arjun AB - A magnetic nanocomposite (NC), Fe3O4@PPy-MAA, was synthesised via in situ oxidative polymerisation of the pyrrole monomer in a thioglycolic acid (mercaptoacetic acid) solution (as a dopant), in the presence of iron oxide (Fe3O4). The newly developed NC was characterised using ATR-FTIR, FE-SEM, HR-TEM, XRD, TGA, BET and VSM. The performance of the NC for silver ion (Ag+) adsorption was carried out through batch studies as a function of pH, adsorbent dose, temperature and initial Ag+ concentration. The maximum adsorption capacity of Ag+ was determined to be 806.4 mg/g at 25 °C using Langmuir adsorption isotherm at a solution pH of 5.6. The kinetics studies indicated that the Ag+ adsorption onto the Fe3O4@PPy-MAA NC surface was rapid and was well described by the pseudo-second-order kinetics equation. Also, the present study emphasised the reusability of Ag+-adsorbed waste material for the disinfection of microorganisms, which was demonstrated through the excellent antimicrobial activity of the NC against Escherichia coli in both synthetic and natural water samples. Therefore, the as prepared Fe3O4@PPy-MAA NC has an excellent ability to successfully remove Ag+ ions from aqueous solutions and subsequently, the Ag-loaded waste material could be used as a potential candidate disinfectant. DA - 2019-01 DB - ResearchSpace DP - CSIR KW - Magnetic nanocomposite KW - Thioglycolic acid KW - Silver adsorption KW - Antimicrobial activity KW - E. coli LK - https://researchspace.csir.co.za PY - 2019 SM - 1385-8947 T1 - Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite TI - Thiol-modified magnetic polypyrrole nanocomposite: An effective adsorbent for the adsorption of silver ions from aqueous solution and subsequent water disinfection by silver-laden nanocomposite UR - http://hdl.handle.net/10204/11007 ER -