Synthesis of ZnO through biomimetization of eggshell membranes using different precursors and its characterization

Camaratta, Rubens; Orozco-Messana, Javier; Bergmann, Carlos Pérez

doi:10.1016/j.ceramint.2015.08.005

Cited by 18 publications

(12 citation statements)

References 21 publications

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“…Furthermore, it was seen that the spherical particles on the surfaces CH 3 COONa-DESMAC are firmly attached. This might be due to the fact that CH 3 COONa can incorporate with proteins present in the ESMs fibers (Camaratta et al, 2015). The amount of spherical particles and particles with uncertain shape increases as the activation temperature is increased, with especially high content at 600°C.…”

Section: Sem Analysismentioning

confidence: 99%

Characterization of Activated Carbon from Eggshell Membranes Prepared Using Sodium Acetate and Zinc Metal Activation

Mopoung¹,

Jitchaijaroenkul²

2017

American Journal of Applied Sciences

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The eggshell membranes of ducks and hens were carbonized or activated with 4 wt% sodium acetate or zinc at 400-600°C. The carbonized or activated products were characterized by SEM-EDS, TEM, FTIR and XRD. It was found that the suitable activation temperature for eggshell membranes is 500°C with 30.03-35.26% yield. The activation performance of CH 3 COONa for eggshell membrane activated carbon production was higher than that of Zn metal. The CO 3 2-, Ca-O, C=C, Na-O and C-O functional groups have been formed on the surface of eggshell membrane activated carbon materials during both CH 3 COONa and Zn activation. Furthermore, CaO, MgO, Na 2 O and ZnO have also accumulated on eggshell membrane activated carbon materials with high content and regular dispersion. It was shown that the particles on the duck eggshell membrane activated carbon formed with Zn had weaker attachment on the surface than for duck eggshell membrane activated carbon formed with CH 3 COONa at same temperature. The XRD and TEM results revealed that the eggshell membrane activated carbons consist of an amorphous carbon matrix with some disordered graphite carbon matrix, spherical particles and nanofiber.

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Section: Sem Analysismentioning

confidence: 99%

Characterization of Activated Carbon from Eggshell Membranes Prepared Using Sodium Acetate and Zinc Metal Activation

Mopoung¹,

Jitchaijaroenkul²

2017

American Journal of Applied Sciences

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“…Among the metal oxides, TiO 2 and ZnO stand out as the most studied oxides for application in dye-sensitized solar cells (DSSCs). The possibility of obtaining ZnO with characteristics such as high surface area, the presence of light-absorbing crystalline defects, and small crystallite size [ 2 ] makes the application of these materials in DSSCs promising.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic ZnO for Dye-Sensitized Solar Cells

Orozco-Messana

2020

Nanomaterials

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A research study on the application of biomimetic ZnO (from eggshell membranes) as photoanodes in dye-sensitized solar cells (DSSCs) is presented. Biomimetic ZnO powder was produced and characterized. Its surface area, crystallinity, and morphology were analyzed and compared to commercial ZnO. Then, solar cells with and without dye were assembled using both the biomimetic and commercial oxides. On the dye-less cell, the oxide assumes the role of the photon absorber, while in the dye-sensitized cells, the oxide’s major function is the separation of the electron-hole pair and conduction of the electric charges formed. The characterization of the oxides showed that the biomimetic synthesis produced ZnO with a larger surface area, smaller crystallite size, and larger light absorption, possibly due to crystalline defects. SEM analysis on biomimetic ZnO revealed a tubular microstructure formed by nanocrystals, instead of the commercial powder showing spherical particles.

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“…Template method is one of the very efficient methods for constructing 3D multilevel nanoarchitecture of the target samples because the morphology, structure, arrangement, size, and partial functional groups of the templates can play the roles of spatial confinement and structure guiding under proper conditions. In recent years, great efforts have been devoted to utilizing biomass with special structure/morphology and functional groups as templates for preparing the goal materials with special morphology and improved the performance, such as eggshells [ 28 ], butterfly wings [ 29 ], and cotton fibers [ 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Enhanced Photocatalytic Properties of 3D Nanoarchitectural ZnO Hollow Spheres with Porous Shells

Han

et al. 2018

Nanomaterials

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By using ginkgo leaves (GL) as template and Zn(CH3COO)2∙2H2O as Zn source, a series of ZnO samples with special morphology were prepared via a template-assisted two-steps method without adding any other additives. The degradation of the dye MB was used to evaluate the photocatalytic property of the as-prepared samples. The results showed that when a proper amount of the template was used, a 3D nanoarchitectural ZnO hollow sphere with porous sphere shell assembled by well-distributed nanoparticles was obtained and its photocatalytic activity was much higher than that of ZnO nanoparticles. The special morphology of the sample was herein considered to be very helpful for highly efficient adsorption and activation of reactant molecules by multi-times adsorption-desorption-adsorption, efficient absorption of irradiation light by repeated absorption-reflection-absorption, and efficient separation of the photogenerated e−-h+ pairs. In addition, the formation of 3D structure of sample ZnO was also discussed.

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Synthesis of ZnO through biomimetization of eggshell membranes using different precursors and its characterization

Cited by 18 publications

References 21 publications

Characterization of Activated Carbon from Eggshell Membranes Prepared Using Sodium Acetate and Zinc Metal Activation

Characterization of Activated Carbon from Eggshell Membranes Prepared Using Sodium Acetate and Zinc Metal Activation

Biomimetic ZnO for Dye-Sensitized Solar Cells

Preparation and Enhanced Photocatalytic Properties of 3D Nanoarchitectural ZnO Hollow Spheres with Porous Shells

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