Plasmon-resonance-enhanced visible-light photocatalytic activity of Ag quantum dots/TiO2 microspheres for methyl orange degradation

被引：18
|
作者：
Yu, Xin [1 ,2 ,4 ]
Shang, Liwei [1 ,2 ,4 ]
Wang, Dongjun [1 ,3 ]
An, Li [1 ]
Li, Zhonghua [1 ,2 ]
Liu, Jiawen [5 ,6 ]
Shen, Jun [1 ]
机构：
[1] Harbin Inst Technol, Minist Educ, Key Lab Microsyst & Microstruct Mfg, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Heilongjiang, Peoples R China
[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[4] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
[5] Harbin Normal Univ, Key Lab Photochem Biomat & Energy Storage Mat, Harbin 150025, Heilongjiang, Peoples R China
[6] Harbin Normal Univ, Coll Chem & Chem Engn, Harbin 150025, Heilongjiang, Peoples R China
来源：
SOLID STATE SCIENCES | 2018年 / 80卷
基金：
中国国家自然科学基金;
关键词：
Photocatalyst; Surface plasmon resonance; Visible-light photocatalysis; Methyl orange; HYDROGEN GENERATION; G-C3N4; TIO2; NANOCOMPOSITES; PERFORMANCE; DRIVEN; WATER; NANOPARTICLES; COMPOSITES; SEPARATION;
D O I：
10.1016/j.solidstatesciences.2018.03.014
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We successfully prepared Ag quantum dots modified TiO2 microspheres by facile solvothermal and calcination method. The as-prepared Ag quantum dots/TiO2 microspheres were characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy and UV-vis diffuse reflectance spectroscopy. The Ag quantum dots/TiO (2) photocatalyst showed excellent visible light absorption and efficient photocatalytic activity for methyl orange degradation. And the sample with the molar ratio of 0.05 (Ag to Ti) showed the best visible light photocatalytic activity for methyl orange degradation, mainly because of the surface plasmon resonance (SPR) effects of Ag quantum dots to generate electron and hole pairs for enhanced visible light photocatalysis. Finally, possible visible light photocatalytic mechanism of Ag quantum dots/TiO2 microspheres for methyl orange degradation was proposed in detail. (C) 2018 Elsevier Masson SAS. All rights reserved.
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页码：1 / 5
页数：5
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