Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/60738
Title: Graphene-based catalyst for waater treatment
Authors: Chew, Nick Guan Pin
Keywords: DRNTU::Engineering::Environmental engineering
Issue Date: 2014
Abstract: In recent years, nanotechnology has drawn widespread interest within the water industry due to water scarcity. Carboxylated Graphene Oxide (GO-COOH), functionalized with Copper (II) Sulfide (CuS) nanoparticles, was successfully synthesized through the combination of the Hummers method for graphite oxidation coupled with a chemical reaction process with Chloroacetic Acid, Dimethyl Sulfoxide (DMSO), and Thioacetamide. This self-assembled Copper (II) Sulfide-Carboxylated Graphene Oxide (GO-COOH-CuS) catalyst could be dispersed in water due to its enhanced hydrophilicity and stability in aqueous solutions. This is possible because of the presence of carboxyl functionalities, which are excellent reactive sites for the anchoring of nanoparticles. The effective anchoring of CuS nanoparticles on GO-COOH sheets was verified using four characterization techniques namely Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM), X-ray Powder Diffraction (XRD), and Thermogravimetric Analysis (TGA). The significant increase in photocatalytic activity was validated by the degradation of Rhodamine B (RhB) dye under visible light irradiation and was attributed to the effective anti-recombination and absorption of RhB onto GO-COOH, which was vindicated by the UV-vis spectra of GO-COOH-CuS. This as-prepared novel hybrid material can be potentially used for water treatment for the removal of recalcitrant organic pollutants. For future research purposes, the antimicrobial properties of this catalyst and the use of Nitrogen-doped (N-doped) graphene could be investigated.
URI: http://hdl.handle.net/10356/60738
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
FYP Final Report.pdf
  Restricted Access
Main article15.01 MBAdobe PDFView/Open

Page view(s) 50

239
checked on Oct 26, 2020

Download(s) 50

24
checked on Oct 26, 2020

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.