Synthesis, Characterization, and Photodegradation Behavior of Single-Phase Anatase TiO2 Materials Synthesized from Ti-oxychloride Precursors
Single-phase anatase-TiO2 nanomaterials with a size of ca. 10 nm and variable quantities of anion impurities were prepared using a novel pathway based on the use of amorphous ammonium Ti-oxychloride precursors synthesized using Ti/Cl initial ratios between 1 and 6. The precursor nature and evolution under thermal treatment were studied using chemical analysis, XRD, XPS, DRIFTS, and mass spectrometry. The nature and concentration of anatase-TiO2 materials anion impurities were analyzed by XPS and DRIFTS. It is shown that negatively charged impurities located in substitutional positions of the anatase network are maximized for a sample synthesized using a Ti/Cl 1:1 atomic ratio and are responsible for the elimination of liquid-phase (phenol) and gas-phase (isopropanol or methylcyclohexane) pollutants under sunlight excitation. A link is established among the initial chemical characterization of the precursors, the final morphological, structural, and chemical composition of the oxide materials, and their photochemical properties.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 980606
- Report Number(s):
- BNL-93524-2010-JA; LANGD5; TRN: US201015%%1991
- Journal Information:
- Langmuir, Vol. 24; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
Similar Records
Experimental Investigation on the Interaction of Water and Methanol with Anatase-TiO2(101)
Local Structure around Iron Ions in Anatase TiO2
Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ANIONS
BEHAVIOR
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
EVOLUTION
EXCITATION
IMPURITIES
MASS SPECTROSCOPY
MATERIALS
OXIDES
PHENOL
POLLUTANTS
PRECURSOR
SIZE
SYNTHESIS
USES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
national synchrotron light source