TY - JOUR
T1 - Photocatalytic H2 evolution from NADH with carbon quantum dots/Pt and 2-phenyl-4-(1-naphthyl)quinolinium ion
AU - Wu, Wenting
AU - Zhan, Liying
AU - Ohkubo, Kei
AU - Yamada, Yusuke
AU - Wu, Mingbo
AU - Fukuzumi, Shunichi
N1 - Publisher Copyright:
© 2014 Elsevier B.V.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Carbon quantum dots (CQDs) were simply blended with platinum salts (K2PtCl4 and K2PtCl6) and converted into a hydrogen-evolution co-catalyst in situ, wherein Pt salts were dispersed on the surface of CQDs under photoirradiation of an aqueous solution of NADH (an electron and proton source) and 2-phenyl-4-(1-naphthyl)quinolinium ion (QuPh+-NA) employed as an organic photocatalyst. The co-catalyst (CQDs/Pt) exhibits similar catalytic reactivity in H2 evolution as that of pure Pt nanoparticles (PtNPs) although the Pt amount of CQDs/Pt was only 1/200 that of PtNPs previously reported. CQDs were able to capture the Pt salt acting as Pt supports. Meanwhile, CQDs act as electron reservoir, playing an important role to enhance electron transfer from QuPh+-NA to the Pt salt, which was confirmed by kinetic studies, XPS and HRTEM.
AB - Carbon quantum dots (CQDs) were simply blended with platinum salts (K2PtCl4 and K2PtCl6) and converted into a hydrogen-evolution co-catalyst in situ, wherein Pt salts were dispersed on the surface of CQDs under photoirradiation of an aqueous solution of NADH (an electron and proton source) and 2-phenyl-4-(1-naphthyl)quinolinium ion (QuPh+-NA) employed as an organic photocatalyst. The co-catalyst (CQDs/Pt) exhibits similar catalytic reactivity in H2 evolution as that of pure Pt nanoparticles (PtNPs) although the Pt amount of CQDs/Pt was only 1/200 that of PtNPs previously reported. CQDs were able to capture the Pt salt acting as Pt supports. Meanwhile, CQDs act as electron reservoir, playing an important role to enhance electron transfer from QuPh+-NA to the Pt salt, which was confirmed by kinetic studies, XPS and HRTEM.
UR - http://www.scopus.com/inward/record.url?scp=84946238173&partnerID=8YFLogxK
U2 - 10.1016/j.jphotobiol.2014.10.018
DO - 10.1016/j.jphotobiol.2014.10.018
M3 - Article
C2 - 25498411
AN - SCOPUS:84946238173
SN - 1011-1344
VL - 152
SP - 63
EP - 70
JO - Journal of Photochemistry and Photobiology B: Biology
JF - Journal of Photochemistry and Photobiology B: Biology
ER -