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Photocatalytic activity enhanced by synergistic effects of nano-silver and ZnSe quantum dots co-loaded with bulk g-C3N4 for Ceftriaxone sodium degradation in aquatic environment

文献类型：期刊论文

作者Zhao, Yanyan1,2; Liang, Xuhua2; Shi, Huanxian1; Wang, Yongbo1; Ren, Yingkun1; Liu, Enzhou1; Zhang, Xu4; Fan, Jun1,3; Hu, Xiaoyun5
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2018-12-01
卷号353页码:56-68
关键词Bulk G-c3n4 Znse Quantum Dot Nano Ag Photocatalytic Degradation Ceftriaxone Sodium
ISSN号1385-8947
DOI10.1016/j.cej.2018.07.109
文献子类Article
英文摘要The development of novel semiconductor with highly efficient photocatalytic activity for completely degrading organic pollutants in the aquatic environment is a dominating goal of modern chemistry. Herein, a novel composite with excellent photocatalytic activity was firstly synthesized by loading small size of ZnSe quantum dot (QDs) and nano-Ag onto the surface of the bulk g-C3N4 (CN). The novel composite (ZnSe-Ag/CN) was used to degrade Ceftriaxone sodium in the aquatic environment at low concentrations under visible light irradiation, and the 7%-ZnSe-Ag/CN composite displayed superior photocatalytic activity, approximately 89.24% of Ceftriaxone sodium has been degraded under visible light irradiation for 90 min, which was approximately 10.14-folds, 2.72-folds, 2.09-folds and 1.39-folds higher than pure ZnSe QDs, CN, 7%-Ag/CN and 5%-ZnSe/CN sample, respectively. Based on the adsorption test, the UV-vis diffuse reflectance spectra (DRS), the N-2 adsorption-desorption isotherm, the photoluminescence spectra, the transient photocurrent response and the electrochemical impedance spectroscopy (EIS) measurements, the enhanced photocatalytic activity of the ZnSe-Ag/CN composite could be attributed to the excellent adsorbability, expansion of the light-harvesting scope, as well as the efficient separation of photogenerated electron-hole pairs. Meanwhile, the ZnSe-Ag/CN composite could produce a large amount of the hydroxyl radicals (center dot OH) during the photocatalytic degradation process. Furthermore, a possible pathway of Ceftriaxone sodium degradation was proposed according to the detailed analyses of the produced intermediates to better understand the reaction process. Therefore, this work offers a new strategy for designing novel photocatalyst with excellent photocatalytic activity to remediation of water contamination.
WOS关键词VISIBLE-LIGHT IRRADIATION ; N-N HETEROJUNCTIONS ; CARBON NITRIDE ; PHOTOELECTROCATALYTIC DEGRADATION ; AG NANOPARTICLES ; HIGH-EFFICIENCY ; CHARGE-TRANSFER ; ENERGY-TRANSFER ; BROAD-SPECTRUM ; H-2 EVOLUTION
WOS研究方向Engineering
语种英语
WOS记录号WOS:000441527900006
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China(21476183 ; National Natural Science Foundation of China(21476183 ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Scientific research plan projects of Shangluo University(15SKY021) ; Scientific research plan projects of Shangluo University(15SKY021) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; 21676213) ; 21676213) ; National Natural Science Foundation of China(21476183 ; National Natural Science Foundation of China(21476183 ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Scientific research plan projects of Shangluo University(15SKY021) ; Scientific research plan projects of Shangluo University(15SKY021) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; 21676213) ; 21676213) ; National Natural Science Foundation of China(21476183 ; National Natural Science Foundation of China(21476183 ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Scientific research plan projects of Shangluo University(15SKY021) ; Scientific research plan projects of Shangluo University(15SKY021) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; 21676213) ; 21676213) ; National Natural Science Foundation of China(21476183 ; National Natural Science Foundation of China(21476183 ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Graduate student innovation Foundation of Northwest University(YZZ17129) ; Scientific research plan projects of Shangluo University(15SKY021) ; Scientific research plan projects of Shangluo University(15SKY021) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Fundamental Research Funds for State Pharmaceutical Administration of Shangluo(SFK2016-01-04) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; Open Research Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Chinese Academy of Sciences(T151702) ; 21676213) ; 21676213)
源URL[http://ir.wipm.ac.cn/handle/112942/13038]  
专题中国科学院武汉物理与数学研究所
通讯作者Fan, Jun; Hu, Xiaoyun
作者单位1.Northwest Univ, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
2.Shangluo Univ, Coll Biol Pharm & Food Engn, Shangluo 726000, Peoples R China
3.Northwest Univ, Coll Food Sci & Engn, Xian 710069, Shaanxi, Peoples R China
4.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China
5.Northwest Univ, Sch Phys, Xian 710069, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Yanyan,Liang, Xuhua,Shi, Huanxian,et al. Photocatalytic activity enhanced by synergistic effects of nano-silver and ZnSe quantum dots co-loaded with bulk g-C3N4 for Ceftriaxone sodium degradation in aquatic environment[J]. CHEMICAL ENGINEERING JOURNAL,2018,353:56-68.
APA Zhao, Yanyan.,Liang, Xuhua.,Shi, Huanxian.,Wang, Yongbo.,Ren, Yingkun.,...&Hu, Xiaoyun.(2018).Photocatalytic activity enhanced by synergistic effects of nano-silver and ZnSe quantum dots co-loaded with bulk g-C3N4 for Ceftriaxone sodium degradation in aquatic environment.CHEMICAL ENGINEERING JOURNAL,353,56-68.
MLA Zhao, Yanyan,et al."Photocatalytic activity enhanced by synergistic effects of nano-silver and ZnSe quantum dots co-loaded with bulk g-C3N4 for Ceftriaxone sodium degradation in aquatic environment".CHEMICAL ENGINEERING JOURNAL 353(2018):56-68.

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来源：武汉物理与数学研究所

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