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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
11/09/2024 |
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Data da última atualização: |
13/09/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVES, A. L. M. M.; SANTOS, F. V. dos; CORREA, D. S. |
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Afiliação: |
FEDERAL UNIVERSITY OF SAO CARLOS (UFSCAR); UNIVERSITY OF SAO PAULO; DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
3D-printed MOF/MoS2 aerogel for dye adsorption and photocatalytic degradation. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Materials Today Chemistry, v. 40, 102248, 2024. |
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ISSN: |
2468-5194 |
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DOI: |
https://doi.org/10.1016/j.mtchem.2024.102248 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT The escalating challenge of water resources contamination, attributed to toxic pollutants, requires urgent attention from both governments and society. Furthermore, the inefficacy of conventional water treatment methods emphasizes the critical necessity for exploring the development of affordable, renewable, and highperformance materials, which should, for instance, enable the mutual adsorption and photocatalytic degradation of organic pollutants. Here we employed the 3D printing technique to manufacture an aerogel based on alginate, gelatin, and carboxymethylcellulose incorporated with 5 and 7.5 wt % of MOF/MoS2. FTIR spectra and EDS analysis evidenced the presence of MOF/MoS2 in the structure of the aerogels, while Helium pycnometer analysis and SEM micrographs demonstrated that the aerogels presented low density and a porous structure with porosity above 80 %. The swelling test showed that the aerogels displayed a high water absorption capacity (1400 %) after 70 h of immersion. The rheology test demonstrated that elastic behavior prevails over viscous behavior (G’ > G″) and the incorporation of 7.5 wt % MOF/MoS2 favored shear thinning and viscosity recovery in the hydrogel. Adsorption tests to methylene blue (employed as a model) showed that the aerogel (HD) without the presence of MOF/MoS2 and the aerogels HD/MOF/MoS2 5 % and MOF/MoS2 7.5 % showed removal efficiencies of 16.77 %, 28.66 %, and 95.86 %, respectively. Conversely, the photodegradation test showed that HD/MOF/MoS2 5 % and HD/MOF/MoS2 7.5 % had an efficiency of 89 % and HD of 80 %. Therefore, our results demonstrate that the developed aerogels are promising candidates for the adsorption and photodegradation of dye while being low-cost, environmentally friendly, and easy to manufacture. MenosABSTRACT The escalating challenge of water resources contamination, attributed to toxic pollutants, requires urgent attention from both governments and society. Furthermore, the inefficacy of conventional water treatment methods emphasizes the critical necessity for exploring the development of affordable, renewable, and highperformance materials, which should, for instance, enable the mutual adsorption and photocatalytic degradation of organic pollutants. Here we employed the 3D printing technique to manufacture an aerogel based on alginate, gelatin, and carboxymethylcellulose incorporated with 5 and 7.5 wt % of MOF/MoS2. FTIR spectra and EDS analysis evidenced the presence of MOF/MoS2 in the structure of the aerogels, while Helium pycnometer analysis and SEM micrographs demonstrated that the aerogels presented low density and a porous structure with porosity above 80 %. The swelling test showed that the aerogels displayed a high water absorption capacity (1400 %) after 70 h of immersion. The rheology test demonstrated that elastic behavior prevails over viscous behavior (G’ > G″) and the incorporation of 7.5 wt % MOF/MoS2 favored shear thinning and viscosity recovery in the hydrogel. Adsorption tests to methylene blue (employed as a model) showed that the aerogel (HD) without the presence of MOF/MoS2 and the aerogels HD/MOF/MoS2 5 % and MOF/MoS2 7.5 % showed removal efficiencies of 16.77 %, 28.66 %, and 95.86 %, respectively. Conversely, the photodegradation test showed th... Mostrar Tudo |
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Palavras-Chave: |
3D printing; Aerogel; Natural polymers; Organic contaminants. |
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Categoria do assunto: |
-- |
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Marc: |
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001 2167326
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008 2024 bl uuuu u00u1 u #d
022 $a2468-5194
024 7 $ahttps://doi.org/10.1016/j.mtchem.2024.102248$2DOI
100 1 $aALVES, A. L. M. M.
245 $a3D-printed MOF/MoS2 aerogel for dye adsorption and photocatalytic degradation.$h[electronic resource]
260 $c2024
520 $aABSTRACT The escalating challenge of water resources contamination, attributed to toxic pollutants, requires urgent attention from both governments and society. Furthermore, the inefficacy of conventional water treatment methods emphasizes the critical necessity for exploring the development of affordable, renewable, and highperformance materials, which should, for instance, enable the mutual adsorption and photocatalytic degradation of organic pollutants. Here we employed the 3D printing technique to manufacture an aerogel based on alginate, gelatin, and carboxymethylcellulose incorporated with 5 and 7.5 wt % of MOF/MoS2. FTIR spectra and EDS analysis evidenced the presence of MOF/MoS2 in the structure of the aerogels, while Helium pycnometer analysis and SEM micrographs demonstrated that the aerogels presented low density and a porous structure with porosity above 80 %. The swelling test showed that the aerogels displayed a high water absorption capacity (1400 %) after 70 h of immersion. The rheology test demonstrated that elastic behavior prevails over viscous behavior (G’ > G″) and the incorporation of 7.5 wt % MOF/MoS2 favored shear thinning and viscosity recovery in the hydrogel. Adsorption tests to methylene blue (employed as a model) showed that the aerogel (HD) without the presence of MOF/MoS2 and the aerogels HD/MOF/MoS2 5 % and MOF/MoS2 7.5 % showed removal efficiencies of 16.77 %, 28.66 %, and 95.86 %, respectively. Conversely, the photodegradation test showed that HD/MOF/MoS2 5 % and HD/MOF/MoS2 7.5 % had an efficiency of 89 % and HD of 80 %. Therefore, our results demonstrate that the developed aerogels are promising candidates for the adsorption and photodegradation of dye while being low-cost, environmentally friendly, and easy to manufacture.
653 $a3D printing
653 $aAerogel
653 $aNatural polymers
653 $aOrganic contaminants
700 1 $aSANTOS, F. V. dos
700 1 $aCORREA, D. S.
773 $tMaterials Today Chemistry$gv. 40, 102248, 2024.
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| 4. |  | CAMARGO, U. A.; DIAS, M. F. BRS Rúbea. Bento Gonçalves: Embrapa Uva e Vinho, 1999. 4 p. (Embrapa Uva e Vinho. Comunicado Técnico, 33).| Tipo: Comunicado Técnico/Recomendações Técnicas |
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