Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Supramolecular Zinc Porphyrin Photocatalyst with Strong Reduction Ability and Robust Built‐In Electric Field for Highly Efficient Hydrogen Production

Supramolecular Zinc Porphyrin Photocatalyst with Strong Reduction Ability and Robust Built‐In... The ultrathin 2D self‐assembled tetrakis (4‐carboxyphenyl) zinc porphyrin (SA‐ZnTCPP) is successfully fabricated for photocatalytic hydrogen production. The H2 evolution rate is 3487.3 µmol g–1 h–1 under wide‐spectrum (300–698 nm), which is increased by ≈85 times compared with metal‐free self‐assembled tetrakis (4‐carboxyphenyl) porphyrin (SA‐TCPP). The significant promotion in photocatalytic activity of SA‐ZnTCPP comes from the deep conduction band (−1.01 V) contributed by the elevation of orbital energy level of porphyrin after Zn2+ coordination. In addition, the strong built‐in electric field boosts the rapid separation and mobility of photogenerated carriers. Consequently, the strong reduction driving force and faster electron transfer kinetics result in highly efficient photocatalytic hydrogen production of SA‐ZnTCPP. This work improves the understanding of the structure‐property relationship of metalloporphyrin‐based supramolecular photocatalysts and provides a general strategy at the molecular level for performance optimization of photocatalysts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Energy Materials Wiley

Supramolecular Zinc Porphyrin Photocatalyst with Strong Reduction Ability and Robust Built‐In Electric Field for Highly Efficient Hydrogen Production

Loading next page...
 
/lp/wiley/supramolecular-zinc-porphyrin-photocatalyst-with-strong-reduction-0yt9Nk0kju

References (61)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
ISSN
1614-6832
eISSN
1614-6840
DOI
10.1002/aenm.202101392
Publisher site
See Article on Publisher Site

Abstract

The ultrathin 2D self‐assembled tetrakis (4‐carboxyphenyl) zinc porphyrin (SA‐ZnTCPP) is successfully fabricated for photocatalytic hydrogen production. The H2 evolution rate is 3487.3 µmol g–1 h–1 under wide‐spectrum (300–698 nm), which is increased by ≈85 times compared with metal‐free self‐assembled tetrakis (4‐carboxyphenyl) porphyrin (SA‐TCPP). The significant promotion in photocatalytic activity of SA‐ZnTCPP comes from the deep conduction band (−1.01 V) contributed by the elevation of orbital energy level of porphyrin after Zn2+ coordination. In addition, the strong built‐in electric field boosts the rapid separation and mobility of photogenerated carriers. Consequently, the strong reduction driving force and faster electron transfer kinetics result in highly efficient photocatalytic hydrogen production of SA‐ZnTCPP. This work improves the understanding of the structure‐property relationship of metalloporphyrin‐based supramolecular photocatalysts and provides a general strategy at the molecular level for performance optimization of photocatalysts.

Journal

Advanced Energy MaterialsWiley

Published: Aug 1, 2021

Keywords: ; ;

There are no references for this article.