Carbon nitride–TiO2 hybrid modified with hydrogenase for visible light driven hydrogen production† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c5sc02017d Click here for additional data file.

Content Provider	Semantic Scholar
Author	Caputo, Christine A. Wang, Lidong Beranek, Radim Reisner, Erwin
Copyright Year	2015
Abstract	A system consisting of a [NiFeSe]-hydrogenase (H2ase) grafted on the surface of a TiO2 nanoparticle modified with polyheptazine carbon nitride polymer, melon (CN x ) is reported. This semi-biological assembly shows a turnover number (TON) of more than 5.8 × 105 mol H2 (mol H2ase)-1 after 72 h in a sacrificial electron donor solution at pH 6 during solar AM 1.5 G irradiation. An external quantum efficiency up to 4.8% for photon-to-hydrogen conversion was achieved under irradiation with monochromatic light. The CN x -TiO2-H2ase construct was also active under UV-free solar light irradiation (λ > 420 nm), where it showed a substantially higher activity than TiO2-H2ase and CN x -H2ase due, in part, to the formation of a CN x -TiO2 charge transfer complex and highly productive electron transfer to the H2ase. The CN x -TiO2-H2ase system sets a new benchmark for photocatalytic H2 production with a H2ase immobilised on a noble- and toxic-metal free light absorber in terms of visible light utilisation and stability.
Starting Page	5690
Ending Page	5694
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1039/c5sc02017d
PubMed reference number	28757952
Journal	Medline
Volume Number	6
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2015/sc/c5sc02017d?page=search
Alternate Webpage(s)	https://doi.org/10.1039/c5sc02017d
Journal	Chemical science
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article