Insight to hydrophobic SiO2 encapsulated SiO2 gel: Preparation and application in fire extinguishing

He, Song; Ruan, Chichi; Shi, Yanjuan; Chen, Guan-Yu; Ma, Yuansheng; Dai, Huaming; Chen, Xianfeng; Yang, Xiaobing

doi:10.1016/j.jhazmat.2020.124216

Cited by 46 publications

(15 citation statements)

References 35 publications

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“…29-0085). 21 For the monometallic catalysts Pd 5 / Si-CODP, two diffraction peaks at 2θ = 39.0°and 45.5°can be observed and assigned to (111) and (200) reflection of metallic Pd (JCPDS no. 46-1043).…”

Section: Resultsmentioning

confidence: 99%

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Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds

Chen

Liu

Men

et al. 2021

ACS Appl. Nano Mater.

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SiO2-supported Pd nanocatalysts were doped with Fe for hydrogenative cleavage of C–N bonds over the substrates hexabenzylhexaazaisowurtzitane (HBIW) and tetraacetyldibenzylhexaazaisowurtzitane (TADBIW). The volcanic type trend of the catalytic performance can be exhibited with an increasing Fe amount. Low Fe content showed high yields by synergistic catalysis with Pd, while high Fe loading decreased surface proportion of active metallic Pd and then lowered the catalytic performances. Interestingly, the nanoalloy structures have been identified to be the origin of synergistic catalysis on the bimetallic nanocatalysts obtained by a simultaneous codeposition-precipitation (CO–DP) method. Moreover, in the CO–DP process, the competitive deposition-precipitation of Fe promoted a more uniform distribution of Pd nanoparticles and a higher activation efficiency of H2 via modifying adsorption–desorption, therefore boosting the catalytic performances.

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Section: Resultsmentioning

confidence: 99%

“…For all the samples, a wide peak at 2θ = 22.0° can be ascribed to the peak of SiO 2 (JCPDS no. 29-0085) . For the monometallic catalysts Pd 5 /Si-CODP, two diffraction peaks at 2θ = 39.0° and 45.5° can be observed and assigned to (111) and (200) reflection of metallic Pd (JCPDS no.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds

Chen

Liu

Men

et al. 2021

ACS Appl. Nano Mater.

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“…Another possible application for silica aerogel is in fire extinguishers. A recent study [108] showed that hydrophobic nano-silica encapsulated silica gel (HSESG) exhibits not only high-efficiency fire extinguishing properties (see Figure 20) but also excellent environmental friendliness and non-toxicity.…”

Section: Opticsmentioning

confidence: 99%

Silica aerogels: from materials research to industrial applications

Lin

et al. 2023

International Materials Reviews

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Silica aerogels are advanced materials with outstanding properties, including high specific surface area and porosity, low thermal conductivity, density, dielectric constant, and refractive index. However, the excellent properties of silica aerogels have shown limited utility in industrial applications, primarily as thermal insulation materials, where they hold only a small (1.1-2.6%) market share. The emergence of clean energy technologies stimulated renewed interest in silica and other aerogels. Here the recent advances in the production and applications of silica aerogels are summarized, and the current challenges and future development opportunities are discussed. The conventional and emerging syntheses and characterization methods of silica aerogels are introduced, followed by a discussion on thermophysical properties and potential applications. The fabrication processes of silica aerogels are analysed at different industry development stages. Recent advances in aerogels research are considered, highlighting the obstacles and possible solutions for the successful translation and industry uptake and focusing on the emerging applications in electric vehicles and building insulation.

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“…To date, many nano additives are used to modify polyester, such as carbon fiber [9,10], graphene [11,12], silica [13], etc. However, silica nanoparticles (SNs) are far superior to other materials as modifiers of polyester on account of their high transparency, low density, low cost, and easy availability [14][15][16]. The transparency, mechanical properties, and crystallization properties of the polyester can be greatly enhanced by introducing SNs as functional carriers without side effect [17], or endowed with other functional characteristics like fluorescence [18].…”

Section: Introductionmentioning

confidence: 99%

Emerging Applications of Silica Nanoparticles as Multifunctional Modifiers for High Performance Polyester Composites

et al. 2021

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Nano-modification of polyester has become a research hotspot due to the growing demand for high-performance polyester. As a functional carrier, silica nanoparticles show large potential in improving crystalline properties, enhancing strength of polyester, and fabricating fluorescent polyester. Herein, we briefly traced the latest literature on synthesis of silica modifiers and the resultant polyester nanocomposites and presented a review. Firstly, we investigated synthesis approaches of silica nanoparticles for modifying polyester including sol-gel and reverse microemulsion technology, and their surface modification methods such as grafting silane coupling agent or polymer. Then, we summarized processing technics of silica-polyester nanocomposites, like physical blending, sol-gel processes, and in situ polymerization. Finally, we explored the application of silica nanoparticles in improving crystalline, mechanical, and fluorescent properties of composite materials. We hope the work provides a guideline for the readers working in the fields of silica nanoparticles as well as modifying polyester.

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Insight to hydrophobic SiO2 encapsulated SiO2 gel: Preparation and application in fire extinguishing

Cited by 46 publications

References 35 publications

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds

Silica aerogels: from materials research to industrial applications

Emerging Applications of Silica Nanoparticles as Multifunctional Modifiers for High Performance Polyester Composites

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Insight to hydrophobic SiO2 encapsulated SiO2 gel: Preparation and application in fire extinguishing

Cited by 46 publications

References 35 publications

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO2 for Hydrogenative Cleavage of C–N Bonds

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO2 for Hydrogenative Cleavage of C–N Bonds

Silica aerogels: from materials research to industrial applications

Emerging Applications of Silica Nanoparticles as Multifunctional Modifiers for High Performance Polyester Composites

Contact Info

Product

Resources

About

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds

Synergistic Catalysis of PdFe Bimetallic Nanoparticles Supported on SiO₂ for Hydrogenative Cleavage of C–N Bonds