@article{scholars14634,
       publisher = {Elsevier Ltd},
         journal = {Polymer Testing},
           title = {Incorporation of carboxyl and amino functionalized carbon quantum dots in thin film membrane for nanofiltration},
          volume = {100},
            note = {cited By 11},
            year = {2021},
             doi = {10.1016/j.polymertesting.2021.107270},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107941896&doi=10.1016\%2fj.polymertesting.2021.107270&partnerID=40&md5=db9b31a50145e5fe02b24a2e1e1615c7},
        keywords = {Atomic force microscopy; Carbon; Composite membranes; Field emission microscopes; Fourier transform infrared spectroscopy; Hydrogen bonds; Molecules; Nanocomposite films; Nanocomposites; Nanocrystals; Nanofiltration; Nanofiltration membranes; Polyamides; Scanning electron microscopy; Semiconductor quantum dots; Thin films, Carbon quantum dots; Fabrication of thin films; Functionalizations; Functionalized; Nano-fillers; Nanocomposite membranes; Property; Rice husk; Thin film membrane; Thin-film nanocomposites, Hydrophilicity},
        abstract = {Fabrication of thin film nanocomposite membrane (TFN) with carbon quantum dots (CQDs) as nanofiller has gained a wide attention due to the promising properties of the CQDs to enhance the membrane permeability. Synthesis of CQDs and their functionalization with both carboxyl and amino groups are originated from rice husks as the precursor. Fourier-Transform Infrared Spectroscopy (FTIR) analysis shows that CQDs contain oxygen-containing groups that allow hydrogen bonding with water molecules. Zeta potential shows that the incorporation of CQDs produces highly negative charged membranes, while Field Emission Scanning Electron Microscopy (FESEM) and Atomic Force Microscopy (AFM) results indicate that the introduction of the nanoparticles alters the surface properties of the fabricated membranes. Photoluminescence (PL) analysis proves that CQDs are present in the polyamide (PA) layer which describes the unique characteristic of the CQDs. The presence of CQDs in TFN membranes assists in enhancing the performance of pristine thin film composite (TFC) membrane in both flux and salt rejection with values around 35 L/m2 h and 90, respectively. {\^A}{\copyright} 2021 The Authors},
          author = {Zainal Abidin, N. H. and Shafie, S. N. A. and Suhaimi, H. and Sambudi, N. S. and Sapiaa Md Nordin, N. A. H.},
            issn = {01429418}
}