Carbon foams from sucrose employing different metallic nitrates as blowing agents: Application in CO2 capture

Araújo, Maria José Gomes de; Villarroel-Rocha, Jhonny; Souza, Vênia Camelo de; Sapag, Karim; Pergher, Sibele Berenice Castellã

doi:10.1016/j.jaap.2019.05.016

Cited by 19 publications

(9 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the one hand, it was intended to improve foaming and promote the activation of foams. It is known that nitrates act as foaming agents and activators, which has been confirmed in this work [ 28 , 29 ]. On the other hand, a second objective was to obtain materials containing active metallic species, which can be addressed to various applications, such as catalysis, adsorption, or the fabrication of electrodes, among others.…”

Section: Resultssupporting

confidence: 76%

“…SEM analysis illustrates the differences that can be expected in terms of morphology ( Figure 5 ). The SEM micrographs of the sucrose carbon foams showed an open cellular network with cells that display holes or windows in their surrounding solid matter, which is typical of these materials [ 1 , 29 ]. These cells are interconnected through membranes, some of which are broken.…”

Section: Resultsmentioning

confidence: 99%

“…The increase in pressure inside the bubbles affects the strength of the cell walls. The pores are generated by the rupture of the walls when pressure gradients exceed the resistance of the cell walls [ 28 , 29 ]. The release of NOx contributes to this phenomenon, which could explain the differences between the foams obtained with and without nitrates.…”

Section: Resultsmentioning

confidence: 99%

“…The conditions of the manufacturing process can be altered using different types of additives. Metallic nitrates catalyze the condensation reactions while contributing to the foaming by releasing NOx [ 28 , 29 , 30 ]. Other studies have evaluated the addition of reagents or components to improve specific properties of the final CFs.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

et al. 2023

View full text Add to dashboard Cite

This work focuses on carbon foams, whose peculiarity is a predominant open macroporous cellular network that can be provided with tailored texture and morphology by the modification of the preparation process. The goal was to obtain macroporous carbonaceous structures capable of being activated by following a simple thermo-foaming procedure using a few reagents. With this purpose in mind, carbon foams with different textural properties were synthesized from sucrose using two foaming processes: at atmospheric pressure and in a pressurized reactor. Iron and silver nitrates added to sucrose gave rise, after carbonization, to materials with iron oxides and elemental silver particles nano-dispersed in the carbon matrix and promoted microporosity in both cases and mesoporosity in the case of iron nitrate. Iron nitrate also catalyzes the graphitization of the carbon material during carbonization. All these findings show the potential of sucrose thermo-foaming process as a viable and sustainable path to produce versatile carbon materials, capable of being used in various applications.

show abstract

Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Caramelization involves the formation of glucose and fructose anhydrides, which will condense into caramelan and caramelan. These two compounds will condense to form humin or caramelin (Narasimman & Prabhakaran 2012); Araújo et al 2019).…”

Section: Results and Discussion Sensory Hedonic Characteristicsmentioning

confidence: 99%

Sensory Properties of Analog Coffee From Banana Peels

Hasbullah

Mentari

Kholisoh

et al. 2021

AGROINTEK: Jurnal Teknologi Industri Pertanian

View full text Add to dashboard Cite

Banana peel had the potential to be used as analog coffee. The sensory of analog coffee will determine consumer acceptance and potential for production. This research aims to study the effect of banana peel maturity and the length of the oven on the sensory characteristics of banana peel analog coffee. Ripe and unripe Kepok banana peels were dried and then baked in the oven with time variations of 5, 10, and 15 minutes/ 50 gram. Then it was reduced in size and sieved with 60 mesh. The sensory test was used hedonic were performed by untrained panelists and descriptive methods were performed by the first training panelists. The results were showed that the panelists' preference towards color and aroma of analog coffee powder increased with the length of baking time. The preference for ripe banana peel analog coffee was greater than that of unripe banana peel. The panelists' preference for the color, aroma, and taste of brewed analog coffee was increased with longer baking time. The flavor of brewed analog coffee of ripe banana peel was stronger than that of the unripe peel. The most preferred banana peel coffee was ripe banana peel baked at 180°C for 15 minutes. It was showed characteristics of darker color and a stronger aroma of coffee powder. The most preferred brewing analog coffee was that with the darkest color, the coffee's strongest aroma, and the strongest bitter taste.

show abstract

Blowing‐Combustion Synthesis of Sponge‐like Ni_xZn_1−xFe₂O₄ and Its Structural and Magnetic Properties

et al. 2023

View full text Add to dashboard Cite

Spinel ferrites have been widely used in various fields, among which nickel‐zinc (NiZn) ferrites have drawn much attention due to their high electrical resistivity as well as low eddy current loss. To accommodate highly‐integrated modern electronic devices, the preparation methods for nano/micro‐sized NiZn ferrites have been widely discussed. Nevertheless, these current synthesis routes are usually cost/time‐consuming, which hinders their large‐scale production for practical applications. Herein, we present a facile, low‐cost synthesis strategy for NiZn ferrites (NixZn1−xFe2O4, x=0, 0.25, 0.5, 0.75 and 1) through a blowing‐combustion method. The effect of Ni/Zn molar concentration on the structure, morphology as well as magnetic properties has been thoroughly investigated through X‐ray diffraction, Raman spectroscopy, scanning electron microscopy and vibrating sample magnetometer. Thanks to the synergetic effect of the pure phase and moderate Ni molar concentration, the Ni0.75Zn0.25Fe2O4 shows an enhanced saturation magnetization of 44.98 emu/g. More importantly, this blowing‐combustion method may also be commonly applied to other spinel ferrites with different stoichiometric ratios and heteroatom doping.

show abstract

Carbon foams from sucrose employing different metallic nitrates as blowing agents: Application in CO2 capture

Cited by 19 publications

References 49 publications

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

Sensory Properties of Analog Coffee From Banana Peels

Blowing‐Combustion Synthesis of Sponge‐like Ni_xZn_1−xFe₂O₄ and Its Structural and Magnetic Properties

Contact Info

Product

Resources

About

Carbon foams from sucrose employing different metallic nitrates as blowing agents: Application in CO2 capture

Cited by 19 publications

References 49 publications

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

Synthesis of Micro- and Mesoporous Carbon Foams with Nanodispersed Metals for Adsorption and Catalysis Applications

Sensory Properties of Analog Coffee From Banana Peels

Blowing‐Combustion Synthesis of Sponge‐like NixZn1−xFe2O4 and Its Structural and Magnetic Properties

Contact Info

Product

Resources

About

Blowing‐Combustion Synthesis of Sponge‐like Ni_xZn_1−xFe₂O₄ and Its Structural and Magnetic Properties