{"title":"A zinc titanate-based floatable composite for photocatalytic degradation of azophloxine","authors":"Shuai Zhang, Wenjie Zhang, Minghua Wang","doi":"10.1007/s10971-024-06626-z","DOIUrl":null,"url":null,"abstract":"<div><p>Zinc titanate was loaded onto expanded perlite (EP) by a sol-gel method to obtain a floatable ZnTiO<sub>3</sub>/EP composite photocatalyst. The 28%ZnTiO<sub>3</sub>/EP particles were well dispersed in water under gentle stirring, and they were also easily collected on the top of the treated water. ZnTiO<sub>3</sub> crystals in the ZnTiO<sub>3</sub> and 28%ZnTiO<sub>3</sub>/EP samples were 43.5 and 38.5 nm in size, respectively. The bandgap energies of ZnTiO<sub>3</sub> and 28%ZnTiO<sub>3</sub>/EP were determined to be 3.96 and 3.69 eV, respectively. EP contained large pores in the size of several micrometers, but it did not have small pores. The specific surface area of 28%ZnTiO<sub>3</sub>/EP was determined to be 1.11 m<sup>2</sup>/g. The azophloxine degradation efficiencies of ZnTiO<sub>3</sub> and 28%ZnTiO<sub>3</sub>/EP after 30 min of irradiation were determined to be 100 and 34.7%, respectively. A total of 94.8% of the azophloxine molecules were degraded on 28%ZnTiO<sub>3</sub>/EP after 100 min of reaction.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 3","pages":"647 - 654"},"PeriodicalIF":3.2000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-024-06626-z","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
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Abstract
Zinc titanate was loaded onto expanded perlite (EP) by a sol-gel method to obtain a floatable ZnTiO3/EP composite photocatalyst. The 28%ZnTiO3/EP particles were well dispersed in water under gentle stirring, and they were also easily collected on the top of the treated water. ZnTiO3 crystals in the ZnTiO3 and 28%ZnTiO3/EP samples were 43.5 and 38.5 nm in size, respectively. The bandgap energies of ZnTiO3 and 28%ZnTiO3/EP were determined to be 3.96 and 3.69 eV, respectively. EP contained large pores in the size of several micrometers, but it did not have small pores. The specific surface area of 28%ZnTiO3/EP was determined to be 1.11 m2/g. The azophloxine degradation efficiencies of ZnTiO3 and 28%ZnTiO3/EP after 30 min of irradiation were determined to be 100 and 34.7%, respectively. A total of 94.8% of the azophloxine molecules were degraded on 28%ZnTiO3/EP after 100 min of reaction.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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