Hits:

Title of Paper:Construct a heterojunction interface to induce and complete hole-dominated cascade reaction

Journal:Small

Place of Publication:Wiley

Key Words:Cascade reaction; Singlet oxygen; Self-sufficient photo-Fenton system; Heterojunction interface; Amoxicillin

Summary:Abstract: Carrier separation efficiency influences the final reactive oxygen species product of the cascade reaction, and constructing a heterojunction interface is an ideal strategy to improve it. Herein, we engineered a self-sufficient photo-Fenton system using a CuxO/CuS/ZnlnS4 heterojunction, which enabled the directional generation of sufficient singlet oxygen ('0z)via a hole-dominated cascade reaction, achieving efficient degradation of amoxicillin, The CuS interface between CuO and ZnlnzS.originated from the in-situ transformation of CuO, and the stepwise presence ofdifferent components during the XRD, XPS, and TEM structure characterizationconfrmed it. This heterojunction interface induced a band structure from the initial type l to S-scheme, optimizing carrier separation efficiency and transfer pathway, which matched with hole-dominated cascade reactions. Consequently, HO2 was in situ produced via water oxidation reaction and eventually converted into 'O2 by highly active holes. In addition, the CuS interface prevented amoxicillin in the aqueous system from directly reacting with holes while ensuring that HO molecules adequately participated in the cascade reaction. In summary, the tailored heterojunction interface boosted carrier separation efficiency, driving the completion of the hole-dominated cascade reaction. This process facilitated the directional generation of abundant 'O, for the efficient degradation of contaminants.

First Author:Yi Ren

Correspondence Author:Zuoli He

All the Authors:Yulin Huang,Ziye Zheng,Meng Dai,Hongsheng Li,Jingcai Chang,Tianguang Lu,Kai Gu,Shuguang Wang

Document Code:08444

Discipline:Engineering

First-Level Discipline:Environmental Science and Engineering

Document Type:J

Volume:21

Page Number:e08444

DOI Number:10.1002/smll.202508444

Number of Words:6000

Translation or Not:No

Date of Publication:2025-10

Included Journals:SCI

Links to Published Journals:https://onlinelibrary.wiley.com/doi/10.1002/smll.202508444

Release Time:2025-10-18