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A Versatile Nb2O5/SnO2 Heterostructure for Different Environmental Purposes: Water Treatment and Artificial Photosynthesis
ChemCatChem ( IF 3.8 ) Pub Date : 2020-11-02 , DOI: 10.1002/cctc.202001569 Thaís A. Rodrigues 1 , Paulo H. E. Falsetti 2 , Douglas M. S. Del Duque 3 , Gelson T. S. T. Silva 4 , Osmando F. Lopes 5, 6 , Waldir Avansi 2 , Caue Ribeiro 4 , Vagner R. de Mendonça 1, 3
ChemCatChem ( IF 3.8 ) Pub Date : 2020-11-02 , DOI: 10.1002/cctc.202001569 Thaís A. Rodrigues 1 , Paulo H. E. Falsetti 2 , Douglas M. S. Del Duque 3 , Gelson T. S. T. Silva 4 , Osmando F. Lopes 5, 6 , Waldir Avansi 2 , Caue Ribeiro 4 , Vagner R. de Mendonça 1, 3
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A versatile Nb2O5/SnO2 heterostructure, adequate for different processes, was successfully synthesized by adding SnO2 to the hydrothermal Nb2O5 synthesis process. The presence of SnO2 dispersed over Nb2O5 did not modify its crystalline structure. On the other hand, the properties of the material were strongly affected by coupling the semiconductors. The heterostructure exhibited enhanced photocatalytic performance compared to pure Nb2O5 in the degradation of rhodamine B dye and the amiloride medication under UV radiation, as well as during CO2 photoreduction. Moreover, the heterostructured material was more efficient at removing the cationic species methylene blue dye and Mn (II) from the aqueous solution through adsorption than pure Nb2O5. Its versatility has been explained by reference to the negative surface charge induced by SnO2 and the charge separation in the heterostructure, which increases their lifetimes, making it possible to reach the surface of the material and promote the reaction in the oxidative and reductive processes. Our results indicate that coupled Nb2O5/SnO2 can be a unique platform to different forms of environmental treatment.
中文翻译：
适用于不同环境目的的多功能Nb2O5 / SnO2异质结构：水处理和人工光合作用
通过在水热Nb 2 O 5合成过程中添加SnO 2，成功合成了一种适用于不同工艺的通用Nb 2 O 5 / SnO 2异质结构。SnO 2分散在Nb 2 O 5上的存在不会改变其晶体结构。另一方面，通过耦合半导体强烈地影响了材料的性能。与纯Nb 2 O 5相比，该异质结构在罗丹明B染料和阿米洛利药物在紫外线辐射下以及在CO降解过程中的降解表现出增强的光催化性能。2光还原。而且，与纯Nb 2 O 5相比，异质结构材料通过吸附从水溶液中去除阳离子物种亚甲基蓝染料和Mn（II）的效率更高。已参考SnO 2引起的负表面电荷和异质结构中的电荷分离来解释了其多功能性，这延长了它们的寿命，从而有可能到达材料表面并促进氧化和还原过程中的反应。我们的结果表明，Nb 2 O 5 / SnO 2偶联可以成为不同形式的环境处理的独特平台。
更新日期：2020-11-02
中文翻译：
适用于不同环境目的的多功能Nb2O5 / SnO2异质结构：水处理和人工光合作用
通过在水热Nb 2 O 5合成过程中添加SnO 2，成功合成了一种适用于不同工艺的通用Nb 2 O 5 / SnO 2异质结构。SnO 2分散在Nb 2 O 5上的存在不会改变其晶体结构。另一方面，通过耦合半导体强烈地影响了材料的性能。与纯Nb 2 O 5相比，该异质结构在罗丹明B染料和阿米洛利药物在紫外线辐射下以及在CO降解过程中的降解表现出增强的光催化性能。2光还原。而且，与纯Nb 2 O 5相比，异质结构材料通过吸附从水溶液中去除阳离子物种亚甲基蓝染料和Mn（II）的效率更高。已参考SnO 2引起的负表面电荷和异质结构中的电荷分离来解释了其多功能性，这延长了它们的寿命，从而有可能到达材料表面并促进氧化和还原过程中的反应。我们的结果表明，Nb 2 O 5 / SnO 2偶联可以成为不同形式的环境处理的独特平台。
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