| Autor: |
Ribeiro MCM; Department of Environmental and Sanitary Engineering, Research Group on Environmental Applications of Advanced Oxidation Processes, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil., Amorim CC; Department of Environmental and Sanitary Engineering, Research Group on Environmental Applications of Advanced Oxidation Processes, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil. camila@desa.ufmg.br.; Universidade Federal de Minas Gerais - Escola de Engenharia, Campus Pampulha - Av. Antônio Carlos, 6627 - Bloco 2 - sala 4627, Belo Horizonte, MG, 31270-901, Brazil. camila@desa.ufmg.br., Moreira RFPM; Department of Chemical and Food Engineering, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, 88040-900, Brazil., Oliveira LCA; Department of Chemistry, ICEx, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil., Henriques AB; Department of Mining Engineering, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil., Leão MMD; Department of Environmental and Sanitary Engineering, Research Group on Environmental Applications of Advanced Oxidation Processes, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil. |
| Abstrakt: |
Semiconductors based on Fe/Nb oxides can present both solar sensitivity and high catalytic activity. However, there is still a lack regarding the comparison between different routes to produce Fe/Nb-based solar photocatalysts and the evaluation of the impact of the synthesis operating conditions on the material properties. In this work, Fe/Nb 2 O 5 ratio, type of precipitating agent, presence/absence of washing stage, and temperature of calcination were verified to be the most relevant parameters in the synthesis by the co-precipitation method. These factors led to remarkable differences in the properties and performance of the photocatalysts produced by each distinct synthesis route. Composition, iron species present in the materials, crystallinity characteristics, and pH of the catalysts were affected, leading to different photocatalytic activities under UV-Vis light. Due to their characteristics, the synthesized materials are potential photocatalysts for application in solar processes. Graphical abstract ᅟ. |
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