F-containing TiO2 nanopowders are synthesized using simple wet processes (precipitation-based and hydrothermal) from ammonium hexafluorotitanate (AHFT, (NH4)2TiF6) as a precursor to apply as a photocatalyst for the degradation of rhodamine B (RhB). The surface properties of the prepared samples are evaluated using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The results confirm that the synthesized anatase TiO2 has sphere-like shapes, with numerous small nanoparticles containing fluorine on the surface. The photocatalytic activity of F-containing TiO2 compared with F-free TiO2 is characterized by measuring the degradation of RhB using a xenon lamp. The photocatalytic degradation of F-containing TiO2 exhibits improved photocatalytic activity, based on the positive effects of adsorbed F ions on the surface.

Abstract
 1. 서 론
 2. 실험 방법
  2.1. 원료 및 불소 함유 TiO2 나노 분말 제조
  2.2. 분석
  2.3. 광촉매 평가
 3. 결과 및 고찰
 4. 결 론
 References

• 이덕희(고등기술연구원 신소재공정센터) | Duk-Hee Lee
• 박재량(고등기술연구원 신소재공정센터) | Jae-Ryang Park
• 이찬기(고등기술연구원 신소재공정센터) | Chan-Gi Lee
• 김현모(㈜ 모노리스) | Hyeon-Mo Kim
• 박경수(고등기술연구원 신소재공정센터) | Kyung-Soo Park Corresponding Author