Tailored self-assembled photocatalytic nanofibres for visible-light-driven hydrogen production.

Nature Chemistry
Jia TianIan Manners

Abstract

The creation of efficient artificial systems that mimic natural photosynthesis represents a key current challenge. Here, we describe a high-performance recyclable photocatalytic core-shell nanofibre system that integrates a cobalt catalyst and a photosensitizer in close proximity for hydrogen production from water using visible light. The composition, microstructure and dimensions-and thereby the catalytic activity-of the nanofibres were controlled through living crystallization-driven self-assembly. In this seeded growth strategy, block copolymers with crystallizable core-forming blocks and functional coronal segments were coassembled into low-dispersity, one-dimensional architectures. Under optimized conditions, the nanofibres promote the photocatalytic production of hydrogen from water with an overall quantum yield for solar energy conversion to hydrogen gas of ~4.0% (with a turnover number of >7,000 over 5 h, a frequency of >1,400 h-1 and a H2 production rate of >0.327 μmol h-1 with 1.34 μg of catalytic polymer (that is, >244,300 μmol h-1 g-1 of catalytic polymer)).

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Citations

Nov 22, 2020·Nature Chemistry·Gregory I PetersonTae-Lim Choi
Mar 17, 2021·Macromolecular Rapid Communications·Xiaolin LyuZhigang Zou
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Fei WangAtanu Jana
Apr 16, 2021·Journal of the American Chemical Society·Shaofei SongMitchell A Winnik
Jun 5, 2021·Advanced Materials·Garion E J HicksDwight S Seferos
May 27, 2021·Nature Communications·Oleksandr ShyshovMax von Delius
Jun 25, 2021·Chemical Science·Liam MacFarlaneIan Manners

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Methods Mentioned

BETA
transmission
X-ray
electron scattering
atomic force microscopy
AFM
confocal
super-resolution microscopy

Software Mentioned

SVI Huygens Professional
LAS X
ImageJ
AZtec

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