FeOOH调节Bi12O17Cl2 ④ 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
打开文本图片集
中图分类号：064 doi：10.1016/j.actphy.2025.100157
Modulate surface potential well depth of Bi12O17Cl2 by FeOOH in Bi12O17Cl ④ FeOOH heterojunction to boost piezoelectric charge transfer and piezo-self-Fenton catalysis
Jiangyuan Qiu 1，2，3t，TaoYu1，2，t， Junxin Chen³，WenxuanLi³，Xiaoxuan Zhang²， jinshengLi1.2，RuiGuo1.2*， Zaiyin Huang 3*， Xuanwen Liu 1，2，*
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 53oo06， Guangxi Zhuang Autonomous Region， China.
Abstract：Although the design of heterojunction piezoelectric catalysts has significantly enhanced catalytic activity，the regulatory mechanisms of heterojunction interfaces on surface potential wels during piezoelectric processes and their impact on carrer migration stillack systematic ivestigation.This work constructs an enhance interface interaction heterointerface between amorphous FeOOHand Bi12O17Cl2 （BOC） in Bi12O17Cl2@FeOOI 工 through a self-assembly strategy. This strong interfacial interaction significantly enhances interface polarity can substantially suppress the stress-responsive capability ofsurface charges onBOC （maximum reduction reached as high as 63%-98% of original value）. This significantly reduces the depth of surface potential wels during piezoelectric processes，thereby effectively weakening piezoelectric charge confinement while promoting charge transfer.ConcurrentlyBi-O-Fe chemical bonds formedat the interfaceand establish charge transportchannels. These synergistic mechanisms elevate the H2O2 production rate to 3.04mmolg-1h-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
1引言
异相芬顿技术作为一种环境友好的替代方案，已广泛应用于处理废水中的新兴有机污染物[1，2]。（剩余20777字）
