Spray drying as feasible processing technique to enhance the photocatalytic activity of the Nb2O5/carbon xerogel composite

Moraes, Nícolas Perciani de; Anselmo, Rodrigo Barbosa; Sartor, Luís Otávio; Dantas, Gustavo Viégas Jucá; Rodrigues, Liana Álvares; Carvalho, Lívia Chaguri e

doi:10.1016/j.matlet.2020.127932

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…Chemically assisted electrodeposition was developed for highly active electrodes [25] (Figure 1). Hydrothermal [23,26,27] and spray drying [10, 28,29] techniques are used as well. During the in situ exsolution, metal cations incorporated into the oxide form active metallic nanoparticles on its surface (Figure 2) in reducing atmospheres [30e32].…”

Section: Efficient Methods For Synthesis Of Materialsmentioning

confidence: 99%

Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Sadykov

Eremeev

Sadovskaya

et al. 2022

Current Opinion in Green and Sustainable Chemistry

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Section: Efficient Methods For Synthesis Of Materialsmentioning

confidence: 99%

Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Sadykov

Eremeev

Sadovskaya

et al. 2022

Current Opinion in Green and Sustainable Chemistry

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“…In terms of electric drive, electrothermally driven vibration of LCE materials has attracted the attention of many scholars. It can convert electrical energy into mechanical energy, which can be used for precise control of LCE composite materials [22][23][24] under electrothermal drive [25]. It can be applied to micro robots [26,27], precision mechanical devices [28][29][30], self-excited mechanics [31], and direct drive without motor [32].…”

Section: Introductionmentioning

confidence: 99%

Vibration of a Liquid Crystal Elastomer Spring Oscillator under Periodic Electrothermal Drive

Lou

et al. 2023

Polymers

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The oscillations of electrically actuated thermally-responsive liquid crystal elastomer (LCE) microfibers under cyclic electric actuation have been discovered in recent experiments. Periodic electric actuation is a common method of active control with potential applications in the fields of micro-actuators. In this paper, the vibration behavior of LCE spring oscillator under periodic electrothermal drive is studied theoretically. Based on the dynamic LCE model, the dynamic governing equation of the LCE spring oscillator is established, and the time history curves of the vibration are obtained by numerical calculations. The results show that the periodic electrothermal drive can cause periodic vibration of the LCE spring oscillator. With the increase of time rate, the vibration amplitude increases first and then decreases. In a small damping system, there exist optimal sets of electrothermal drive period and electrothermal drive time rate to maximize the system amplitude. For the optimum periodic mode, the vibration amplitude of the spring oscillator is affected by the current heat, damping coefficient, gravital acceleration, spring constant and shrinkage coefficient, but not by the initial velocity. The application examples of LCE materials show that periodic electrothermally driven LCEs have promising applications. The results of this study are instructive for the design of soft robots and LCE-based electric locomotives.

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“…The development of such materials is aimed at a multitude of applications and processes, ranging from construction materials to catalysts [1,2]. Recently, the Nb2O5/Carbon Xerogel composite has been reported to be a suitable photocatalyst for photodegradation processes using visible light [3,4]. This material was synthesized using renewable carbon sources (black wattle tannin) to highlight its potential used in green and sustainable water treatment processes.…”

Section: Introductionmentioning

confidence: 99%

Carbon xerogel/Nb2O5 composites produced by hot air drying: effect of fluoride presence during synthesis and thermal treatment

Anselmo¹,

Alvares²,

Chaguri³

Proceedings of the 22nd International Drying Symposium on Drying Technology - IDS '22

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This work aims to evaluate the effect of the fluoride ion on the properties of the carbon xerogel/Nb2O5 synthesized via evaporative drying. The material produced in the presence of fluoride ions(not filtered) was composed of NbO1.95F1.05 and Nb2O5 crystalline phases, whereas the filtered material was mainly composed of Nb2O5. Morphology-wise, the filtered material presented a much more regular particle formation, with rod-shaped particles. Regarding optical properties and particle size, the materials displayed similar properties.

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Spray drying as feasible processing technique to enhance the photocatalytic activity of the Nb2O5/carbon xerogel composite

Cited by 11 publications

References 13 publications

Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Vibration of a Liquid Crystal Elastomer Spring Oscillator under Periodic Electrothermal Drive

Carbon xerogel/Nb2O5 composites produced by hot air drying: effect of fluoride presence during synthesis and thermal treatment

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