TY - JOUR
T1 - Pt nanoparticles on titania nanotubes prepared by vapor-phase impregnation-decomposition method
AU - Encarnación Gómez, C.
AU - Vargas García, J. R.
AU - Toledo Antonio, J. A.
AU - Cortes Jacome, M. A.
AU - Ángeles Chávez, C.
PY - 2010/4/16
Y1 - 2010/4/16
N2 - Platinum (Pt) nanoparticles were prepared on titania nanotubes (TNTs) by vapor-phase impregnation-decomposition method using platinum acetylacetonate as precursor. TNTs and Pt precursor were mixed in 3:1 weight ratio before vapor-phase impregnation. The mixed powders were heated at 453 K for 10 min to evaporate the precursor in a horizontal tube quartz reactor at a total pressure of 66.6 kPa. Then, the impregnated TNTs were moved to a higher temperature zone (673 K) inside the tube reactor to achieve the precursor decomposition. HAADF-STEM observations, AAS and XPS results revealed that this method allows the formation of uniformly distributed Pt nanoparticles on the surface of TNTs with a narrow distribution of particle size (2.1 nm mean size). Pt nanoparticles remain mainly as Pt0 oxidation state with a Pt0/Pt2+ atomic ratio of 3.9.
AB - Platinum (Pt) nanoparticles were prepared on titania nanotubes (TNTs) by vapor-phase impregnation-decomposition method using platinum acetylacetonate as precursor. TNTs and Pt precursor were mixed in 3:1 weight ratio before vapor-phase impregnation. The mixed powders were heated at 453 K for 10 min to evaporate the precursor in a horizontal tube quartz reactor at a total pressure of 66.6 kPa. Then, the impregnated TNTs were moved to a higher temperature zone (673 K) inside the tube reactor to achieve the precursor decomposition. HAADF-STEM observations, AAS and XPS results revealed that this method allows the formation of uniformly distributed Pt nanoparticles on the surface of TNTs with a narrow distribution of particle size (2.1 nm mean size). Pt nanoparticles remain mainly as Pt0 oxidation state with a Pt0/Pt2+ atomic ratio of 3.9.
KW - Nanotubes
KW - Platinum nanoparticles
KW - Titania
UR - http://www.scopus.com/inward/record.url?scp=77950928617&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2009.10.232
DO - 10.1016/j.jallcom.2009.10.232
M3 - Artículo
SN - 0925-8388
VL - 495
SP - 458
EP - 461
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 2
ER -