TY - JOUR
T1 - Polyhedral Pt vs. spherical Pt nanoparticles on commercial titanias
T2 - Is shape tailoring a guarantee of achieving high activity?
AU - Kovács, G.
AU - Fodor, Sz
AU - Vulpoi, A.
AU - Schrantz, K.
AU - Dombi, A.
AU - Hernádi, K.
AU - Danciu, V.
AU - Pap, Zs
AU - Baia, L.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - As shape tailoring is gaining more attention in the field of photocatalysis, exploration of the impact of noble metal (Pt) nanoparticles' morphology on the activity of TiO2-Pt nanocomposites is inevitable. Spherical and polyhedral Pt nanoparticles have been synthesized by chemical reduction, while Aldrich anatase, Aldrich rutile, and Aeroxide P25 were used as base photocatalysts. The nanocomposites were analyzed using DRS, XRD, and HRTEM to uncover morphological, optical, and structural peculiarities of the composite photocatalysts. The importance of the Pt nanoparticles' geometry was proven at three levels: (i) UV light-driven photodegradation of three model pollutants: phenol, methyl orange, and oxalic acid; (ii) the primary degradation intermediates' evolution profile in the case of phenol degradation; and (iii) photocatalytic H2 production.
AB - As shape tailoring is gaining more attention in the field of photocatalysis, exploration of the impact of noble metal (Pt) nanoparticles' morphology on the activity of TiO2-Pt nanocomposites is inevitable. Spherical and polyhedral Pt nanoparticles have been synthesized by chemical reduction, while Aldrich anatase, Aldrich rutile, and Aeroxide P25 were used as base photocatalysts. The nanocomposites were analyzed using DRS, XRD, and HRTEM to uncover morphological, optical, and structural peculiarities of the composite photocatalysts. The importance of the Pt nanoparticles' geometry was proven at three levels: (i) UV light-driven photodegradation of three model pollutants: phenol, methyl orange, and oxalic acid; (ii) the primary degradation intermediates' evolution profile in the case of phenol degradation; and (iii) photocatalytic H2 production.
KW - Commercial TiO<inf>2</inf>-Pt nanocomposites
KW - H<inf>2</inf> production
KW - Photocatalysis
KW - Photodegradation intermediates
KW - Platinum nanoparticles' shape controlling
UR - http://www.scopus.com/inward/record.url?scp=84928789796&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928789796&partnerID=8YFLogxK
U2 - 10.1016/j.jcat.2015.02.008
DO - 10.1016/j.jcat.2015.02.008
M3 - Article
AN - SCOPUS:84928789796
VL - 325
SP - 156
EP - 167
JO - Journal of Catalysis
JF - Journal of Catalysis
SN - 0021-9517
ER -