Preparation and composition analysis of catalysts supported by CuO-CoO-MnO/SiO2 nanocomposite aerogels

Zhao, Yueqing; Zhao, Xizhe; Zhang, Mingxi; Jia, Qianyi

doi:10.1016/j.micromeso.2017.11.017

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…Aerogels, as new porous materials with continuous three-dimensional nanoporous network structures, demonstrate a series of desirable attributes including high specific surface area, porosity, and low density, which have been widely used in the areas of environmental science, , catalysts, , energy storage, , and thermal insulation, , etc. To date, aerogels can be fabricated by various materials, such as SiO 2 , metal, metal oxide, carbonaceous materials, and organic materials .…”

Section: Introductionmentioning

confidence: 99%

Robust Silk Fibroin/Graphene Oxide Aerogel Fiber for Radiative Heating Textiles

Wang

Yang

et al. 2020

ACS Appl. Mater. Interfaces

113

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Aerogel fibers with ultrahigh porosity and ultralow density are promising candidates for personal thermal management to reduce the energy waste of heating an entire room, and play important roles in reducing energy waste in general. However, aerogel fibers generally suffer from poor mechanical properties and complicated preparation processes. Herein, we demonstrate hierarchically porous and continuous silk fibroin/graphene oxide aerogel fibers (SF/GO) with high strength, excellent radiative heating performance, and thermal insulation performance through coaxial wet spinning and freeze-drying. The hollow CA/PAA fibers prepared via a coaxial wet spinning process have multiscale porous structures, which are not only beneficial for the formation of an SF/GO aerogel core, but also help to improve the mechanical strength of the aerogel fibers. Moreover, the prepared aerogel fibers show comparable porosity and mechanical properties with those of hollow CA/PAA fibers. More importantly, GO can dramatically improve the infrared radiative heating properties, and the surface temperature is increased by 2.6 °C after exposure to infrared radiation for 30 s, greatly higher than that of hollow fiber and SF aerogel fibers. Furthermore, the integration of hierarchically porous hollow fibers and SF/GO aerogels prevents thermal convection, decreases thermal conduction, and suppresses thermal radiation, rendering the SF/GO aerogel fiber with excellent thermal insulation performance. This work may shed light on the heat transfer mechanism of the microenvironment between the human body and textiles and pave the way for the fabrication of high-performance aerogel fibers used for personal thermal management.

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Section: Introductionmentioning

confidence: 99%

Robust Silk Fibroin/Graphene Oxide Aerogel Fiber for Radiative Heating Textiles

Wang

Yang

et al. 2020

ACS Appl. Mater. Interfaces

113

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“…Aerogel materials, with ultra-low density, large surface area, and continuous three-dimensional nanoporous network structure properties [1], have been widely used in various applications, such as environmental treatment [2,3,4,5], catalytic carrier [6,7], energy storage device [8,9], flexible electronic device [10], and thermal insulation [11,12]. Currently, aerogels can be prepared from a variety of materials, such as silica, metal/metal oxides, carbon-based materials, and organic materials [13].…”

Section: Introductionmentioning

confidence: 99%

Continuous, Strong, Porous Silk Firoin-Based Aerogel Fibers toward Textile Thermal Insulation

et al. 2019

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Aerogel fiber, with the characteristics of ultra-low density, ultra-high porosity, and high specific surface area, is the most potential candidate for manufacturing wearable thermal insulation material. However, aerogel fibers generally show weak mechanical properties and complex preparation processes. Herein, through firstly preparing a cellulose acetate/polyacrylic acid (CA/PAA) hollow fiber using coaxial wet-spinning followed by injecting the silk fibroin (SF) solution into the hollow fiber, the CA/PAA-wrapped SF aerogel fibers toward textile thermal insulation were successfully constructed after freeze-drying. The sheath (CA/PAA hollow fiber) possesses a multiscale porous structure, including micropores (11.37 ± 4.01 μm), sub-micron pores (217.47 ± 46.16 nm), as well as nanopores on the inner (44.00 ± 21.65 nm) and outer (36.43 ± 17.55 nm) surfaces, which is crucial to the formation of a SF aerogel core. Furthermore, the porous CA/PAA-wrapped SF aerogel fibers have many advantages, such as low density (0.21 g/cm3), high porosity (86%), high strength at break (2.6 ± 0.4 MPa), as well as potential continuous and large-scale production. The delicate structure of multiscale porous sheath and ultra-low-density SF aerogel core synergistically inhibit air circulation and limit convective heat transfer. Meanwhile, the high porosity of aerogel fibers weakens heat transfer and the SF aerogel cellular walls prevent infrared radiation. The results show that the mat composed of these aerogel fibers exhibits excellent thermal insulating properties with a wide working temperature from −20 to 100 °C. Therefore, this SF-based aerogel fiber can be considered as a practical option for high performance thermal insulation.

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“…They show great promise for using as supporting substrate, owing to their high surface area, low density, high specific surface area, recyclability, biodegradability, low cost and aqueous stability [ 2 ]. Therefore, aerogels have a variety of applications, such as acoustic insulation, CO 2 capture, catalyst supports, drug carrier and membrane separations [ 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Morphological, Release and Antibacterial Performances of Amoxicillin-Loaded Cellulose Aerogels

Chen

et al. 2018

Molecules

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Cellulose has been widely used in the biomedical field. In this study, novel cellulose aerogels were firstly prepared in a NaOH-based solvent system by a facile casting method. Then amoxicillin was successfully loaded into cellulose aerogels with different loadings. The morphology and structure of the cellulose aerogels were characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The drug release and antibacterial activities were also evaluated. The drug release results showed that cellulose aerogels have controlled amoxicillin release performance. In vitro antibacterial assay demonstrated that the cellulose aerogels exhibited excellent antibacterial activity with the amoxicillin dose-dependent activity. Therefore, the developed cellulose aerogels display controlled release behavior and efficient antibacterial performance, thus confirming their potential for biomedical applications.

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Preparation and composition analysis of catalysts supported by CuO-CoO-MnO/SiO2 nanocomposite aerogels

Cited by 10 publications

References 10 publications

Robust Silk Fibroin/Graphene Oxide Aerogel Fiber for Radiative Heating Textiles

Robust Silk Fibroin/Graphene Oxide Aerogel Fiber for Radiative Heating Textiles

Continuous, Strong, Porous Silk Firoin-Based Aerogel Fibers toward Textile Thermal Insulation

Morphological, Release and Antibacterial Performances of Amoxicillin-Loaded Cellulose Aerogels

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