Conductive polymer supported and confined iron phosphide nanocrystals for boosting the photocatalytic hydrogen production of graphitic carbon nitride

The development of earth-abundant cocatalysts with confined size on suitable conductive supports is of high importance for facilitating solar energy conversion using semiconductors. In this work, a green redox relay reaction between FeCl 3 and a pyrrole (Py) monomer was developed for the synthesis o...

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Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020-11, Vol.8 (41), p.1454-14547
Main Authors: Li, Tao, Wang, Kai, Fang, Qi-Tao, Zhang, Yu, Wang, Bo, Li, Rui, Lin, Ye-Zhan, Liu, Ke-Cheng, Xie, Hai-Quan, Li, Kui
Format: Article
Language:English
Subjects:
Carbon
Carbon nitride
Conducting polymers
Conductivity
Current carriers
Ferric chloride
Hydrogen evolution
Hydrogen production
Iron chlorides
Light irradiation
Morphology
Nanocrystals
Phosphides
Photocatalysis
Solar energy conversion
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Summary:The development of earth-abundant cocatalysts with confined size on suitable conductive supports is of high importance for facilitating solar energy conversion using semiconductors. In this work, a green redox relay reaction between FeCl 3 and a pyrrole (Py) monomer was developed for the synthesis of g-C 3 N 4 -PPy-FeP, in which FeCl 3 realized the formation of PPy over graphitic carbon nitride, and the as-formed PPy confined and tightly supported Fe ions, which were then transformed into the nanosized FeP of diameter less than 5 nm. A highly porous morphology was obtained by inserting well-dispersed g-C 3 N 4 into PPy, accompanied by conductive PPy and nanosized FeP acting as a mediator of charge carriers and high-performance cocatalyst, respectively. Consequently, optimal g-C 3 N 4 -PPy-FeP demonstrated a photocatalytic hydrogen evolution activity 6 and 20 times larger than that of g-C 3 N 4 singly loaded separately with PPy and FeP, respectively, under visible light irradiation. A green redox relay reaction between FeCl 3 and pyrrole monomer was developed for synthesizing g-C 3 N 4 -PPy-FeP with a hydrogen production activity of 6 and 20 times larger than that of g-C 3 N 4 singly loaded separately with PPy and FeP.
ISSN:2050-7526
2050-7534
DOI:10.1039/d0tc03348k