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Title: Influence of pH on the formulation of TiO{sub 2} powder prepared by co-precipitation of TiCl{sub 3} and photocatalytic activity

Titanium dioxide (titania) nanoparticle were synthesized by coprecipitation process of titanium trichloride (TiCl{sub 3}) in aqueous medium, with NH{sub 4}OH as pH regulator. The pH solution was varied during the synthesis process between pH 3-8.4, and all samples were calcined temperature at 400°C for 3 hours. Characteristics and properties of the TiO{sub 2} powder were investigated using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM). XRD results show that the single-phase rutile formed when the pH is less than 5, anatase single phase formed began pH 8, and the pH of the solution between 5-8 formed mixed phase rutile-anatase-brookite, rutile-brookite or anatase-brookite. Methylene Blue (MB) photodegradation test were performed in order to evaluate photocatalytic activity. Nanoparticles TiO{sub 2} rutile, anatase phase, and mixed phase rutile-brookite, anatase-brookite used to test the photocatalytic activity by measuring the absorbance spectrum photodegradation using UV-Vis spectrometer. The test results showed that the mixture phase of rutile-brookite provide the greatest photodegradation than other phases.
Authors:
; ; ; ; ; ; ;  [1]
  1. Department of Physics, Institute of Technology Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111 (Indonesia)
Publication Date:
OSTI Identifier:
22494610
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1710; Journal Issue: 1; Conference: NNS2015: 6. nanoscience and nanotechnology symposium, Surakarta (Indonesia), 4-5 Nov 2015; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMMONIUM HYDROXIDES; COPRECIPITATION; MATHEMATICAL SOLUTIONS; METHYLENE BLUE; NANOPARTICLES; PH VALUE; PHOTOCATALYSIS; POWDERS; RUTILE; SCANNING ELECTRON MICROSCOPY; SPECTRA; SPECTROMETERS; SYNTHESIS; TITANIUM; TITANIUM CHLORIDES; TITANIUM OXIDES; X-RAY DIFFRACTION