title: Expanding the applications of the ilmenite mineral to the preparation of nanostructures: TiO2 nanorods and their photocatalytic properties in the degradation of oxalic acid.
abstract: The mineral ilmenite is one of the most abundant ores in the Earth's crust and it is the main source for the industrial production of bulk titanium oxide. At the same time, methods to convert ilmenite into nanostructures of TiO(2) (which are required for new advanced applications, such as solar cells, batteries, and photocatalysts) have not been explored to any significant extent. Herein, we describe a simple and effective method for the preparation of rutile TiO(2) nanorods from ball-milled ilmenite. These nanorods have small dimensions (width: 5-20 nm, length: 50-100 nm, thickness: 2-5 nm) and possess large specific surface areas (up to 97 m(2)  g(-1)). Dissolution/hydrolysis/precipitation is proposed as a growth mechanism. The nanorods were found to have attractive photocatalytic properties in the degradation of oxalic acid. Their photocatalytic activity is close to that of the benchmark Degussa P25 material and better than that of a commercial high-surface-area rutile powder.
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia.
authors.forename: Tao
authors.initials: T
authors.lastname: Tao
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Dan
authors.initials: D
authors.lastname: Zhou
authors.forename: Hongzhou
authors.initials: H
authors.lastname: Zhang
authors.forename: Sanly
authors.initials: S
authors.lastname: Liu
authors.forename: Rose
authors.initials: R
authors.lastname: Amal
authors.forename: Neeraj
authors.initials: N
authors.lastname: Sharma
authors.forename: Alexey M
authors.initials: AM
authors.lastname: Glushenkov
mesh_terms: D002384:Catalysis; D007501:Iron / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D019815:Oxalic Acid / Q000737:chemistry*; D010316:Particle Size; D055668:Photochemical Processes; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: C029232:ilmenite; C009495:titanium dioxide; D019815:Oxalic Acid; D014025:Titanium; D007501:Iron