Enhancement of visible-light-driven photoresponse of Mn-doped SnO2 quantum dots obtained by rapid and energy efficient synthesis

被引：52
|
作者：
Babu, B. [1 ]
Kadam, A. N. [2 ]
Rao, G. Thirumala [3 ]
Lee, Sang-Wha [2 ]
Byon, Chan [4 ]
Shim, Jaesool [1 ]
机构：
[1] Yeungnam Univ, Sch Mech Engn, Gyongsan 712749, South Korea
[2] Gachon Univ, Dept Chem & Biochem Engn, Seongnam City 461701, South Korea
[3] GMR Inst Technol, Phys Div, Dept Basic Sci & Humanities, Gmr Nagar 532127, Rajam, India
[4] UNIST, Sch Mech & Nucl Engn, Ulsan 44919, South Korea
来源：
JOURNAL OF LUMINESCENCE | 2018年 / 195卷
关键词：
Mn-doped SnO2; Quantum dots; Solution combustion synthesis; Visible photocatalysis; PHOTOCATALYTIC ACTIVITY; MAGNETIC-PROPERTIES; THIN-FILMS; OPTICAL-PROPERTIES; OXIDATION-STATE; TIN DIOXIDE; NANOPARTICLES; DEGRADATION; EPR; NI;
D O I：
10.1016/j.jlumin.2017.11.040
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Mn-doped SnO2 quantum dots (QDs) with different Mn concentrations were prepared by solution combustion synthesis. The crystallite size was under 5 nm was confirmed from XRD and HR-TEM. A considerable decrease in band gap energy was observed with the increase in Mn content. The PL spectra show orange emission at about 590 nm due to the ultra-small crystallite size and crystal defects of SnO2 QDs. The photocatalytic degradation of MO dye was measured under visible light irradiation using the Mn-doped SnO2 QDs as catalysts. 3 mol% Mn-doped SnO2 QDs showed the 17 times higher photocatalytic performance than SnO2 QDs within 240 min.
引用
收藏
页码：283 / 289
页数：7
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