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Title: Ferroelectric-field accelerated charge transfer in 2D CuInP₂S₆ heterostructure for enhanced photocatalytic H₂ evolution
Authors: Lin, Bo
Chaturvedi, Apoorva
Di, Jun
You, Lu
Lai, Chen
Duan, Ruihuan
Zhou, Jiadong
Xu, Baorong
Chen, Zihao
Song, Pin
Peng, Juan
Ma, Bowen
Liu, Haishi
Meng, Peng
Yang, Guidong
Zhang, Hua
Liu, Zheng
Liu, Fucai
Keywords: Engineering::Materials
Issue Date: 2020
Source: Lin, B., Chaturvedi, A., Di, J., You, L., Lai, C., Duan, R., Zhou, J., Xu, B., Chen, Z., Song, P., Peng, J., Ma, B., Liu, H., Meng, P., Yang, G., Zhang, H., Liu, Z. & Liu, F. (2020). Ferroelectric-field accelerated charge transfer in 2D CuInP₂S₆ heterostructure for enhanced photocatalytic H₂ evolution. Nano Energy, 76, 104972-.
Project: MOE2016-T2-2-103
MOE2017- T2-1-162
Journal: Nano Energy
Abstract: The development of ferroelectric photocatalytic materials with polarization electric field is a key approach to realize the spatial separation and fast transfer of charge carriers in visible-light-driven H2 evolution. Generally, replacing traditional 3D perovskite-type ferroelectric materials with 2D ferroelectric materials is disregarded as candidates for photocatalysis. Herein a 2D CuInP2S6 (CIPS) with room-temperature ferroelectricity (a Curie temperature of around 47 °C) is developed as a new photocatalyst, and 2D/2D heterojunction of CuInP2S6 nanosheet/g-C3N4 ultrathin flake (CIPS/CN) is constructed to further accelerate charge transfer. Benefitting from the synergetic action of the inner polarization electric field of CIPS and 2D/2D heterojunction, CIPS/CN displays a substantially accelerated charge transfer and significantly enhanced photocatalytic H2 evolution rate, which is up to 7.6 times by contrast with that of paraelectric-phase CIPS. This work would provide a new platform for the design of 2D ferroelectric photocatalytic system with highly-efficient charge transfer.
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2020.104972
Rights: © 2020 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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