Enhanced visible light photocatalytic efficiency of La-doped ZnO nanofibers via electrospinning-calcination technology

被引：155

作者：

Jian, Shaoju ^{[1
]}

Tian, Zhiwei ^{[2
]}

Hu, Jiapeng ^{[1
]}

Zhang, Kaiyin ^{[3
]}

Zhang, Lin ^{[4
]}

Duan, Gaigai ^{[1
,2
]}

Yang, Weisen ^{[1
]}

Jiang, Shaohua ^{[1
,2
]}

机构：

[1] Wuyi Univ, Coll Ecol & Resources Engn, Fujian Key Lab Ecoind Green Technol, Wuyishan 354300, Peoples R China

[2] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Ef ficient Proc & Utilizat F, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China

[3] Wuyi Univ, Coll Mech & Elect Engn, Wuyishan 354300, Peoples R China

[4] MIT, Media Lab, Cambridge, MA 02139 USA

来源：

ADVANCED POWDER MATERIALS | 2022年 / 1卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Electrospinning; La -doped ZnO nanofibers; Rhodamine B; Photocatalytic decomposition; Photodegradation kinetics; OPTICAL-PROPERTIES; DEGRADATION; PHOTODEGRADATION; NANOSTRUCTURES; NANOPARTICLES; NANORODS; BEHAVIOR; FILMS; DYE;

D O I：

10.1016/j.apmate.2021.09.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of La-doped ZnO (La/ZnO) nanofibers were prepared by electrospinning-calcination technology and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) absorption spectroscopy and specific surface area analysis. The effect of numerous operational parameters involving calcination temperature, La doping amount, La-doped ZnO concentration and initial Rhodamine B (Rh B) concentration on photocatalytic efficiency of the composite has been analyzed by using Rh B for degradation under the illumination of visible light. Under optimum conditions, ZnO doped with 1.5 at.% La achieved 94.31% Rh B degradation after 510 min of visible light illumination. The kinetic data of La/ZnO catalyst for Rh B photodegradation fitted the Langmuir-Hinshelwood first-order (LHFO) kinetic model well.

引用

页数：8

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