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http://hdl.handle.net/1843/61008| Tipo: | Artigo de Periódico |
| Título: | Zn/ZnO heterostructures photocatalyst obtained by sustainable processes from alkaline batteries waste: synthesis, characterization and application |
| Autor(es): | Mariane Santos Anholeti Andressa Rocha Honorio de Oliveira Jean Castro da Cruz Vivian Andrade Luciano Mayra Aparecida Nascimento Gustavo Alves Puiatti Ana Paula de Carvalho Teixeira Renata Pereira Lopes |
| Resumo: | Photocatalysts were synthesized from anodic paste of alkaline batteries waste. After washing step, the material was calcined at different temperatures such as 600 °C (AB-600), 700 °C (AB-700) and 800 °C (AB-800). However, only the temperature of 600 °C produced a Zn/ZnO heterostructure. The Zn/ZnO heterostructure consisted by hexagonal wurtzite structure and metallic Zn confirmed by X-Ray Diffraction. The material showed a nanorod format with quasi-spherical Zn nanoparticles presence. AB-600, AB-700 and AB-800 showed high thermal stability in the range of 25–900 °C and band gap energy values were between 3.14 and 3.19 eV. The materials were applied in the photodegradation of the Direct Red 80 dye (DR80) and the AB-600 showed the best efficiency. The DR80 removal by AB-600 occurs under UV and visible radiation that demonstrates the advantage of the material that can be activated by solar radiation. The mechanism evaluation DR80 degradation by AB-600 demonstrate that removal occurs by direct oxidation in photogenerated vacancies and indirectly by •OH radicals. Therefore, it can be concluded that it was synthesized a promising photocatalyst from waste batteries by a sustainable route, which can be used in the dye degradation. |
| Assunto: | Desenvolvimento sustentável Tingimento - Fibras texteis Resíduos Baterias - Reaproveitamento Oxidação Fotocatálise |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1016/j.matchemphys.2022.126058 |
| URI: | http://hdl.handle.net/1843/61008 |
| Data do documento: | 2022 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S0254058422003649 |
| metadata.dc.relation.ispartof: | Materials Chemistry and Physics |
| Aparece nas coleções: | Artigo de Periódico |
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