Significant hydrogen generation via photo-mechanical coupling in flexible methylammonium lead iodide nanowires

Yucheng Zhang; Jiawei Huang; Mengya Zhu; Zhouyang Zhang; Kaiqi Nie; Zhiguo Wang; Xiaxia Liao; Longlong Shu; Tingfang Tian; Zhao Wang; Yang Lu; Linfeng Fei

doi:10.1039/d3sc05434a

Significant hydrogen generation via photo-mechanical coupling in flexible methylammonium lead iodide nanowires

Yucheng Zhang, Jiawei Huang, Mengya Zhu, Zhouyang Zhang, Kaiqi Nie, Zhiguo Wang, Xiaxia Liao, Longlong Shu, Tingfang Tian^*, Zhao Wang^*, Yang Lu, Linfeng Fei^*

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

8 Citations (Scopus)

22 Downloads (CityUHK Scholars)

Abstract

The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI₃) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI₃ NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g⁻¹ h⁻¹, surpassing those values from either photo- or piezocatalysis of MAPbI₃ nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production. © 2024 The Royal Society of Chemistry.

Original language	English
Pages (from-to)	1782-1788
Journal	Chemical Science
Volume	15
Issue number	5
Online published	3 Jan 2024
DOIs	https://doi.org/10.1039/d3sc05434a
Publication status	Published - 7 Feb 2024

Funding

This work was jointly supported by the National Natural Science Foundation of China (51972159 and U21A20500) and Jiangxi Provincial Natural Science Foundation (20212ACB204016, 20192ACB21018, and 20171ACB20006). Y. L. acknowledges the support from the Hong Kong RGC General Research Fund (GRF) project (11200623). Z. W. acknowledges the support from the Hubei Provincial Natural Science Foundation (2023AFA074). L.-F. F. acknowledges the support from Nanchang University. The authors also acknowledge the use of the 4B9B beamline at the Beijing Synchrotron Radiation Facility.

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This full text is made available under CC-BY-NC 3.0. https://creativecommons.org/licenses/by-nc/3.0/

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abstract = "The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI3) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI3 NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g−1 h−1, surpassing those values from either photo- or piezocatalysis of MAPbI3 nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production. {\textcopyright} 2024 The Royal Society of Chemistry.",

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AU - Zhang, Yucheng

AU - Huang, Jiawei

AU - Zhu, Mengya

AU - Zhang, Zhouyang

AU - Nie, Kaiqi

AU - Wang, Zhiguo

AU - Liao, Xiaxia

AU - Shu, Longlong

AU - Tian, Tingfang

AU - Wang, Zhao

AU - Lu, Yang

AU - Fei, Linfeng

PY - 2024/2/7

Y1 - 2024/2/7

N2 - The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI3) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI3 NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g−1 h−1, surpassing those values from either photo- or piezocatalysis of MAPbI3 nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production. © 2024 The Royal Society of Chemistry.

AB - The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI3) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI3 NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g−1 h−1, surpassing those values from either photo- or piezocatalysis of MAPbI3 nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production. © 2024 The Royal Society of Chemistry.

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DO - 10.1039/d3sc05434a

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JO - Chemical Science

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Significant hydrogen generation via photo-mechanical coupling in flexible methylammonium lead iodide nanowires

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