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Title of Paper:Efficient Photocatalytic Degradation of Sulfamethazine by Carboxylic CNT-decorated Bi₂O₃/Bi₂WO₆ Heterojunction Catalysts

Journal:Chemical Research in Chinese Universities

Place of Publication:Springer Nature

Summary:The persistent contamination of aquatic ecosystems by sulfonamide antibiotics, such as sulfamethazine (SMZ), poses critical challenges to environmental sustainability and human health, demanding innovative solutions for efficient pollutant removal. In this paper, we synthesized a carboxylic carbon nanotube (CNT)-decorated Bi2O3/Bi2WO6 (CNT-BO/BWO) heterojunction using the solvothermal approach, resulting in a remarkable enhancement in photocatalytic performance. The incorporation of CNT-COOH not only increased the specific surface area to 82.99 m2/g and enhanced the adsorption efficiency of sulfamethazine (SMZ) but also improved the carrier separation efficiency through the conductive network. The CNT-BO/BWO catalyst achieved 99% degradation of SMZ within 40 min (with a rate constant of 0.1238 min−1), demonstrating the effectiveness of the interface engineering and conductivity enhancement strategies. Through systematic mechanism analysis, we elucidated the adsorption-catalysis synergy where CNTs simultaneously concentrate pollutant molecules and accelerate interfacial electron transfer, establishing a new representative for designing Z-scheme heterojunction systems. This work provides fundamental insights into multifunctional catalyst engineering for addressing emerging contaminants while advancing sustainable water remediation technologies.

First Author:Jialiu Sun

Correspondence Author:Sen Wang,Zuoli He,Shu-guang Wang

All the Authors:Yi Ren,Meng Dai,Hongsheng Li,Huijun Yu

Indexed by:Journal paper

Page Number:DOI：10.1007/s40242-025-5115-8

DOI Number:10.1007/s40242-025-5115-8

Number of Words:9

Translation or Not:No

Date of Publication:2025-09

Links to Published Journals:https://doi.org/10.1007/s40242-025-5115-8

Release Time:2025-09-03