Premium
Visible‐Light Photocatalytic Hydrogen Production Activity of ZnIn 2 S 4 Microspheres Using Carbon Quantum Dots and Platinum as Dual Co‐catalysts
Author(s) -
Li Qin,
Cui Can,
Meng Huan,
Yu Jiaguo
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402128
Subject(s) - triethanolamine , photocatalysis , materials science , platinum , catalysis , visible spectrum , aqueous solution , hydrogen production , carbon quantum dots , absorption (acoustics) , photochemistry , carbon fibers , nanoparticle , quantum yield , chemical engineering , quantum dot , nuclear chemistry , nanotechnology , chemistry , analytical chemistry (journal) , optoelectronics , organic chemistry , fluorescence , composite number , composite material , optics , engineering , physics
ZnIn 2 S 4 microspheres (ZIS MSs) were for the first time decorated with carbon quantum dots (CQDs) and platinum nanoparticles (NPs) as dual co‐catalysts of for photocatalytic H 2 production. The ZIS MSs co‐loaded with CQDs and Pt exhibited a high photocatalytic H 2 production rate of 1032.2 μmol h −1 g −1 with an apparent quantum efficiency of 2.2 % (420 nm) in triethanolamine aqueous solution under visible‐light irradiation, which was much higher than the respective photocatalytic rates of pure ZIS, Pt loaded ZIS, and CQDs‐decorated ZIS. Such a great enhancement was attributed to the integrative effect of good crystallization, enhanced light absorption, high electrical conductivity of CQDs, and the vectorial electron transfer from ZIS to CQDs and Pt NPs (ZIS→CQDs→Pt).