title: Biotemplated synthesis of anatase titanium dioxide nanoparticles via lignocellulosic waste material.
abstract: Anatase titanium dioxide nanoparticles (TiO2-NPs) were synthesized by sol-gel method using rice straw as a soft biotemplate. Rice straw, as a lignocellulosic waste material, is a biomass feedstock which is globally produced in high rate and could be utilized in an innovative approach to manufacture a value-added product. Rice straw as a reliable biotemplate has been used in the sol-gel method to synthesize ultrasmall sizes of TiO2-NPs with high potential application in photocatalysis. The physicochemical properties of titanium dioxide nanoparticles were investigated by a number of techniques such as X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, thermogravimetric analysis (TGA), ultraviolet visible spectra (UV-Vis), and surface area and pore size analysis. All results consensually confirmed that particle sizes of synthesized titanium dioxide were template-dependent, representing decrease in the nanoparticles sizes with increase of biotemplate concentration. Titanium dioxide nanoparticles as small as 13.0 ± 3.3 nm were obtained under our experimental conditions. Additionally, surface area and porosity of synthesized TiO2-NPs have been enhanced by increasing rice straw amount which results in surface modification of nanoparticles and potential application in photocatalysis.
authors.affiliation: Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, IPS Building, 50603 Kuala Lumpur, Malaysia.
authors.forename: Donya
authors.identifier: 0000-0002-8564-6411
authors.initials: D
authors.lastname: Ramimoghadam
authors.affiliation: Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, IPS Building, 50603 Kuala Lumpur, Malaysia.
authors.forename: Samira
authors.initials: S
authors.lastname: Bagheri
authors.affiliation: Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, IPS Building, 50603 Kuala Lumpur, Malaysia.
authors.forename: Sharifah Bee
authors.initials: SB
authors.lastname: Abd Hamid
mesh_terms: D008031:Lignin / Q000138:chemical synthesis / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D012275:Oryza / Q000737:chemistry; D010316:Particle Size; D062611:Solid Waste; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D062611:Solid Waste; C036909:lignocellulose; C009495:titanium dioxide; D008031:Lignin; D014025:Titanium