title: Photocatalytic H2 evolution from NADH with carbon quantum dots/Pt and 2-phenyl-4-(1-naphthyl)quinolinium ion.
abstract: 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.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, School of Chemical Engineering, China University of Petroleum, Qingdao 266555, PR China.
authors.forename: Wenting
authors.initials: W
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Heavy Oil Processing, School of Chemical Engineering, China University of Petroleum, Qingdao 266555, PR China.
authors.forename: Liying
authors.initials: L
authors.lastname: Zhan
authors.affiliation: Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Ohkubo
authors.affiliation: Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamada
authors.affiliation: State Key Laboratory of Heavy Oil Processing, School of Chemical Engineering, China University of Petroleum, Qingdao 266555, PR China.
authors.forename: Mingbo
authors.initials: M
authors.lastname: Wu
authors.affiliation: Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan. Electronic address: fukuzumi@chem.eng.osaka-u.ac.jp.
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuzumi
mesh_terms: D002244:Carbon / Q000737:chemistry* / Q000378:metabolism; D002384:Catalysis; D006859:Hydrogen / Q000737:chemistry* / Q000378:metabolism; D009243:NAD / Q000737:chemistry* / Q000378:metabolism; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry* / Q000378:metabolism; D045663:Quantum Dots / Q000737:chemistry* / Q000378:metabolism; D015363:Quinolones / Q000737:chemistry / Q000378:metabolism
chemical_list: D015363:Quinolones; D009243:NAD; C084179:2-phenyl-4-oxohydroquinoline; D010984:Platinum; D002244:Carbon; D006859:Hydrogen