Development of a new zinc oxide/tin oxide/carbon xerogel photocatalyst for visible light photodegradation of 4-chlorophenol

被引：16
|
作者：
de Moraes, Nicolas Perciani [1 ]
Goes, Clarice Moreira [1 ]
Sperandio, Daniel Couto [1 ]
Rocha, Robson da Silva [1 ]
Landers, Richard [2 ]
Paramasivam, Thangadurai [3 ]
Rodrigues, Liana Alvares [1 ]
机构：
[1] Univ Sao Paulo, Lorena Sch Engn EEL, Estr Municipal Campinho S-N, BR-12602810 Lorena, SP, Brazil
[2] Univ Estadual Campinas, Gleb Wataghin Inst Phys, 500 Ave Albert Einstein, BR-13083852 Campinas, SP, Brazil
[3] Pondicherry Univ, Ctr Nanosci & Technol, Kalapet 605014, Puducherry, India
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2021年 / 269卷 / 269期
基金：
巴西圣保罗研究基金会;
关键词：
Photocatalysis; Heterojunction; Carbon xerogel; Zinc oxide; Tin oxide; CALCINATION TEMPERATURE; WATER-TREATMENT; CARBON CONTENT; TIO2; NANOSTRUCTURES; COMPOSITES;
D O I：
10.1016/j.mseb.2021.115183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports the development of a new carbon xerogel/zinc oxide/tin oxide ternary photocatalyst and its application for the enhancement of photocatalytic response through the formation of heterojunctions composed of different phases. The results obtained from X-ray diffractometry showed that all the materials exhibited the hexagonal structure of zinc oxide. The application of infrared spectroscopy, energy dispersive spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses helped confirm the presence of tin oxide and carbon xerogel in the photocatalytic material developed in the study. All the materials evaluated in the study showed photocatalytic activity under both solar and visible radiations. Under visible light, the optimized ternary material displayed higher photoactivity for 4-chlorophenol degradation, with total degradation of 55% in 5 h. The results obtained from chronoamperometry tests showed that the ternary composite exhibited the highest photocurrent among the samples evaluated when the materials were subjected to solar radiation.
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页数：12
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