Acid-mediated sol-gel synthesis of visible-light active photocatalysts

C. X. Dong, A. P. Xian, E. H. Han, J. K. Shang

Research output: Contribution to journalArticle


The synthesis of nitrogen and carbon doped titanium oxide photocatalysts from a concentrated nitric acid and titanium tetrabutanoxide was studied. Different volumes of concentrated nitric acid (65-68%) were first added into 28 ml absolute alcohol, followed by adding 14 ml titanium tetrabutanoxide [Ti(C4H9O)4]. The mixture of distilled water and ethanol was then added with vigorously stirring by magnetic stirrer. The resulting transparent yellowish sol solution was stirred to complete the hydrolysis activity. The sol was dried in oven, the xerogels were grounded and calcined and the solid products were characterized by X-ray diffraction (XRD), X-Ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. X-ray powder diffraction pattern of the gel showed the gel was amorphous without nitric acid, and strong diffraction appeared with the increase in the volume of concentrated nitric acid, indicating acid addition improved crystallization.

Original languageEnglish (US)
Pages (from-to)6168-6170
Number of pages3
JournalJournal of Materials Science
Issue number18
StatePublished - Aug 1 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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