物理化学学报 >> 2026, Vol. 42 >> Issue (1): 100157.doi: 10.1016/j.actphy.2025.100157

论文 上一篇    

FeOOH调节Bi12O17Cl2@FeOOH异质结中Bi12O17Cl2的表面势阱深度以增强压电电荷转移和压电自芬顿催化

邱江源1,2,3,†, 于涛1,2,†, 陈均鑫3, 李文轩3, 张晓萱1,2, 李金生1,2, 郭瑞1,2,*(), 黄在银3,*(), 刘宣文1,2,*()   

  1. 1 东北大学材料科学与工程学院, 辽宁 沈阳 110819
    2 东北大学秦皇岛分校资源与材料学院, 河北 秦皇岛 066004
    3 广西民族大学化学化工学院, 广西 南宁 530006
  • 收稿日期:2025-05-04 修回日期:2025-08-10 录用日期:2025-08-13 发布日期:2025-11-01
  • 通讯作者: Email: lxw@neuq.edu.cn (刘宣文)Email: guorui@neuq.edu.cn (郭瑞)Email: huangzaiyin@163.com (黄在银)
  • 作者简介:

    †这些作者对这项工作做出了同等贡献

Modulate surface potential well depth of Bi12O17Cl2 by FeOOH in Bi12O17Cl2@FeOOH heterojunction to boost piezoelectric charge transfer and piezo-self-Fenton catalysis

Jiangyuan Qiu1,2,3, Tao Yu1,2, Junxin Chen3, Wenxuan Li3, Xiaoxuan Zhang1,2, jinsheng Li1,2, Rui Guo1,2,*(), Zaiyin Huang3,*(), Xuanwen Liu1,2,*()   

  1. 1 School of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning Province, China
    2 School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, Hebei Province, China
    3 School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, Guangxi Zhuang Autonomous Region, China
  • Received:2025-05-04 Revised:2025-08-10 Accepted:2025-08-13 Published:2025-11-01
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摘要：

尽管异质结压电催化剂的设计被证明可以显著提升其催化活性，但异质结界面在压电过程中对表面势阱的调控机制及其对载流子迁移的影响仍缺乏系统研究。本研究通过自组装策略，在Bi12O17Cl2@FeOOH体系中构建了非晶FeOOH与Bi12O17Cl2之间的增强界面相互作用异质界面结。这种强界面相互作用显著增强了界面极性，可大幅抑制Bi12O17Cl2表面电荷的应力响应能力(最大降幅达原始值的63%–98%)，这显著降低了压电过程中表面势阱的深度，从而有效削弱了压电电荷的束缚，同时促进了电荷转移。同时，界面形成的Bi–O–Fe化学键构建了电荷传输通道。这些协同机制使得压电自芬顿反应中H2O2产率达到3.04 mmol g−1 h−1，总有机碳去除率提高了3倍(从18.6%增至55.8%)。

关键词: 压电催化剂, 势阱, 电荷传输通道, 界面效应, 表面电场

Abstract:

Although the design of heterojunction piezoelectric catalysts has significantly enhanced catalytic activity, the regulatory mechanisms of heterojunction interfaces on surface potential wells during piezoelectric processes and their impact on carrier migration still lack systematic investigation. This work constructs an enhance interface interaction heterointerface between amorphous FeOOH and Bi12O17Cl2 (BOC) in Bi12O17Cl2@FeOOH through a self-assembly strategy. ‌This strong interfacial interaction significantly enhances interface polarity can substantially suppress the stress-responsive capability of surface charges on BOC (maximum reduction reached as high as 63%–98% of original value). This significantly reduces the depth of surface potential wells during piezoelectric processes, thereby effectively weakening piezoelectric charge confinement while promoting charge transfer. Concurrently, Bi–O–Fe chemical bonds formed at the interface and establish charge transport channels. These synergistic mechanisms elevate the H2O2 production rate to 3.04 mmol g−1 h−1 for participate in the piezoelectric self-Fenton reaction and the removal rate of total organic carbon increased 3 fold (18.6% vs. 55.8%).

Key words: Piezoelectric catalyst, Potential well, Charge transport channels, Interfacial effect, Surface electric field