Study of Effect of Dimension Regulation on Bismuth Ferrite Piezocatalytic Activity and Hydrogen Peroxide Yield

PENG Yawen; YANG Long; LAN Shenyu; YAN Wei

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Study of Effect of Dimension Regulation on Bismuth Ferrite Piezocatalytic Activity and Hydrogen Peroxide Yield

更新时间：2025-11-18

- Study of Effect of Dimension Regulation on Bismuth Ferrite Piezocatalytic Activity and Hydrogen Peroxide Yield
- Moren Journal (2025)
- 作者机构：
  
  西安交通大学能源与动力工程学院环境科学与工程系,陕西省西安市710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： X12;TQ421.1
- Received：21 May 2025，
  
  Revised：2025-07-11，
  
  Accepted：21 July 2025，
- 稿件说明：
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PENG Yawen, YANG Long, LAN Shenyu, et al. Study of Effect of Dimension Regulation on Bismuth Ferrite Piezocatalytic Activity and Hydrogen Peroxide Yield[J/OL]. Moren Journal, 2025.
DOI：

PENG Yawen, YANG Long, LAN Shenyu, et al. Study of Effect of Dimension Regulation on Bismuth Ferrite Piezocatalytic Activity and Hydrogen Peroxide Yield[J/OL]. Moren Journal, 2025. DOI：

摘要

为了阐明压电催化剂维度对压电催化性能的影响，本文利用水热法分别合成了一维线状和二维片状铁酸铋（BiFeO

）压电材料，并系统研究了BiFeO

在低频超声振动下压电催化原位产H

的性能和机制。研究发现：线状BiFeO

的H

产率为2553.5 μmol·g

-1

·h

-1

，高于片状BiFeO

的2078.9 μmol·g

-1

·h

-1

，表明形貌对压电催化性能具有显著影响；相对于二维片状，一维线状BiFeO

在外力作用下更易形变弯曲，从而产生更强的压电响应、更高的压电电势、更低的界面电阻及更大的压电电流；·OH、·O

−

、电子和空穴在H

生成过程中均起到重要作用，线状BiFeO

压电催化原位产生H

同时来源于水氧化和氧还原路径。研究通过“材料结构设计-催化性能测试-内在性质表征-反应机制探索”四维关联模型，为压电催化剂设计提供跨尺度优化策略，可为H

高效原位产生提供参考。

Abstract

To elucidate the effect of piezocatalyst dimension on piezocatalytic performance

1D line-like and 2D sheet-like bismuth ferrite (BiFeO

) piezocatalytic materials were synthesized via a hydrothermal method

their piezocatalytic performance and mechanism for in-situ H

production were investigated systematically under low-frequency ultrasonic vibration. The results demonstrated that line-like BiFeO

exhibited a superior H

production rate of 2553. 5 μmol·g

-1

·h

-1

compared to sheet-like BiFeO

at 2078.9 μmol·g

-1

·h

-1

indicating morphology-dependent enhancement of piezocatalytic activity. Compared to 2-D sheets

1-D line-like BiFeO

was more prone to deformation and bending under external forces

thereby generating stronger piezoelectric response

higher piezoelectric p

otential

lower interfacial resistance

and enhanced piezoelectric current. ·OH

·O₂⁻

electrons

and holes all play crucial roles in the H

generation process. The piezocatalytic in-situ production of H

by line-like BiFeO

originated from both water oxidation and oxygen reduction pathways. By establishing a four-dimensional correlation framework integrating material structure design

catalytic performance evaluation

intrinsic property characterization

and reaction mechanism exploration

this work proposes cross-scale optimization strategies for piezocatalyst engineering and provides reference for highly efficient in-situ H

production.

关键词

Keywords

references

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