维度调控对铁酸铋压电催化活性与过氧化氢产率的影响
打开文本图片集
关键词：原位产 H2O2 ；压电催化；铁酸铋；维度调控
中图分类号：X12；TQ421.1文献标志码：A
DOI：10.7652/xjtuxb202601007 文章编号：0253-987X（2026）01-0063-09
Effect of Dimensional Regulation on the Piezocatalytic Activity and Hydrogen Peroxide Yield of Bismuth Ferrite
PENG Yawen，YANG Long，LAN Shenyu，YAN Wei （School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 71oo49，China
Abstract：To elucidate the influence of piezoelectric catalyst dimensions on piezocatalytic performance， one-dimensional wire-like and two-dimensional sheet-like bismuth ferrite （ BiFeO3 ）piezoelectric materials are synthesized using a hydrothermal method. The performance and mechanism of in-situ H2O2 generation via piezocatalysis by BiFeO3 under low-frequency ultrasonic vibration are systematically investigated. The findings reveal that the H2O2 yield of wire-like BiFeO3 is 2 553.5μmol⋅g-1∙h-1 higher than the 2078.9μmol∙g-1∙h-1 yield of sheet-like BiFeO3 ，indicating that morphology significantly affects piezocatalytic performance. Compared to the two-dimensional sheets，the one-dimensional wire-like BiFeO3 is more prone to deformation and bending under external force， resulting in a stronger piezoelectric response， higher piezoelectric potential， lower interfacial resistance，and larger piezoelectric current ·OH，⋅⋅O2- ，electrons，and holes all play important roles in the H2O2 generation process. The H2O2 in-situ production via piezocatalysis by wire-like BiFeO3 originates from both water oxidation and oxygen reduction pathways. Through a fourdimensional correlation model of“material structure design-catalytic performance testing-intrinsic property characterization-reaction mechanism exploration". It provides a cross-scale optimization strategy for the design of piezoelectric catalysts，offering a reference for the efficient in-situ production of H2O2 ：
Keywords： H2O2 in-situ generation；piezocatalysis；bismuth ferrite；dimension regulation
过氧化氢（ ⋅H2O2 ）是一种常见的化学物质，被列为全球100种关键化学品之一[]，其活性氧含量高达 47.1%[2] ，在纺织、造纸、化工、军工、电子、环保、医药等领域具有广泛应用[3-7]。（剩余15725字）
