Synthesis, characterization, and visible light-induced photocatalytic evaluation of WO3/NaNbO3 composites for the degradation of 2,4-D herbicide

被引：32
作者：
Hernandez-Moreno, E. J. [1 ]
Martinez de la Cruz, A. [2 ]
Hinojosa-Reyes, L. [1 ]
Guzman-Mar, J. [1 ]
Gracia-Pinilla, M. A. [3 ]
Hernandez-Ramirez, A. [1 ]
机构：
[1] Univ Autonoma Nuevo Leon, Fac Ciencias Quim, Av Univ S-N,Cd Univ, San Nicolas De Los Garza 66455, Nuevo Leon, Mexico
[2] Univ Autonoma Nuevo Leon, Fac Ingn Mecan & Elect, CIIDIT, Av Univ S-N,Cd Univ, San Nicolas De Los Garza 66455, Nuevo Leon, Mexico
[3] Univ Autonoma Nuevo Leon, Fac Ciencias Fis Matemat, Av Univ S-N,Cd Univ, San Nicolas De Los Garza 66455, Nuevo Leon, Mexico
来源：
MATERIALS TODAY CHEMISTRY | 2021年 / 19卷
关键词：
Tungsten oxide; Material design; Sodium niobate; Composites; Heterogeneous photocatalysis; 2,4-DICHLOROPHENOXYACETIC ACID; WO3; NANORODS; NANBO3; REMOVAL; NANOCRYSTALLINE; PHASE; PEROXYMONOSULFATE; OPTIMIZATION; FABRICATION; PARAMETERS;
D O I：
10.1016/j.mtchem.2020.100406
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this research study, WO3/NaNbO3-coupled photocatalysts were synthesized at three WO3 mass ratios (15, 85, and 95 wt%) and characterized. These composites were characterized via X-ray powder diffraction, N-2 physisorption, UV-Vis diffuse reflectance spectroscopy, scanning electron microscopy, Xray photoelectron spectroscopy, Raman spectroscopy, transmission electron microscopy, and photoluminescence techniques. For comparison, bare WO3 and NaNbO3 were also synthesized and characterized. 2,4-Dichlorophenoxyacetic acid (2,4-D) was degraded under visible light to evaluate its photocatalytic performance. The WO3 (95 wt%)/NaNbO3 composite showed higher photocatalytic activity than pure WO3 and NaNbO3 and even than the 15 and 85 wt% coupled materials; thus, the combination with the highest ratio of WO3 with respect to NaNbO3 showed increased photocatalytic activity compared with the bare materials. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：11
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