一种新型Carbon Quantum Dots/CdS/Ta_(3)N_(5)S型异质结纤维光催化材料用于高效降解抗生素  

Design of Carbon Quantum Dots/CdS/Ta_(3)N_(5)S-Scheme Heterojunction Nanofibers for Efficient Photocatalytic Antibiotic Removal

作　　者：李世杰 戎珂 王晓琴 申楚琦 杨方 张青红[2] Shijie Li;Ke Rong;Xiaoqin Wang;Chuqi Shen;Fang Yang;Qinghong Zhang(Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province,National Engineering Research Center for Marine Aquaculture,College of Marine Science and Technology,Zhejiang Ocean University,Zhoushan 316022,Zhejiang Province,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China;School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]浙江海洋大学海洋科学与技术学院,国家海洋设施养殖工程技术研究中心,浙江省海产品健康危害因素关键技术研究重点实验室,浙江舟山316022 [2]东华大学,纤维材料改性国家重点实验室(东华大学),上海201620 [3]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《物理化学学报》2024年第12期11-12,共2页Acta Physico-Chimica Sinica

基　　金：纤维材料改性国家重点实验室资助课题(KF2321);浙江省自然科学基金(LY20E080014);舟山科技项目(2022C41011)资助项目。

摘　　要：近年来随着工业化的深入发展,全球环境污染日益加重,尤其是水体中的抗生素污染,亟需重点关注并采取科学、有效方法予以解决。光催化技术是一种非常有前景的水体治理技术,为解决水体抗生素污染提供了重要途径。该技术实现大规模应用的关键在于开发出高效且稳定的光催化材料。现有的光催化材料的性能主要受制于其弱的太阳能利用率,快速复合的光生载流子以及氧化还原能力弱等问题。研究发现科学设计和构筑碳量子调控S型异质结材料可以有效克服以上问题。相比于单一的S型异质结,该新型异质结体系整合了两者的优势,具有巨大的应用前景。因此,开发新型碳量子调控S型异质结材料,有望实现对抗生素污染水体的快速治理,进一步促进光催化水体修复技术的发展。在本文研究中,我们成功开发了一种新型的碳量子点调控的S型carbon quantum dots/CdS/Ta_(3)N_(5)异质结纤维用于高效去除左氧氟沙星。其对左氧氟沙星去除速率常数为0.0404 min^(-1),比Ta_(3)N_(5),CdS/Ta_(3)N_(5)和CdS分别提高了39.4、2.1和7.2倍。这主要得益于独特1D/0D/0D核壳结构,该异质结构有效促进了碳量子点和S型异质结的协同增效机制。本研究为开发高效Ta_(3)N_(5)基催化体系用于环境治理开辟了一种新的思路。Photocatalytic pollutant removal provides a competitive manner for wastewater purification.The exploration of efficient and durable photocatalysts is significant for this technique.Integrating carbon quantum dots and S-scheme junction into one system represents an effective strategy for achieving the outstanding photocatalytic efficacy.In comparison to S-scheme junction,photocatalysts combining carbon quantum dots and S-scheme junction harness the merits of both,thus holding greater potential.Herein,a multicomponent fibrous photocatalyst of carbon quantum dots/CdS/Ta_(3)N_(5)that incorporates S-scheme heterojunction and carbon quantum dots is developed for high-efficient destruction of levofloxacin antibiotic.The as-prepared carbon quantum dots/CdS/Ta_(3)N_(5)heterojunction nanofibers manifest a significantly strengthened photocatalytic levofloxacin degradation activity,with the rate constant(0.0404 min^(−1))exceeding Ta_(3)N_(5),CdS/Ta_(3)N_(5),and CdS by 39.4,2.1,and 7.2 folds.Such remarkable photocatalytic performance is credited to the unique 1D/0D/0D core-shell heterostructure with compact-bound hetero-interface,which favors the synergistic effect between carbon quantum dots modification and S-scheme junction.This work offers a new way for developing new Ta_(3)N_(5)-based heterojunctions for environmental remediation.

关 键 词：碳量子点 S型异质结 Ta_(3)N_(5)纤维 协同效应 光催化 

分 类 号：O643[理学—物理化学]