Preparation of core/shell structured silicate composite filler and its reinforcing property

Li, Lin; Zhang, Meiyun; Song, Shunxi; Yang, Bin; Wu, Yangyu; Yang, Qiang

doi:10.1016/j.powtec.2018.03.037

Cited by 16 publications

(3 citation statements)

References 44 publications

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“…Acid leaching has been widely used in the purification of MG-Si [12,19] and diamond wire saw silicon powder [20][21]. In [22]. The effect of hydrochloric acid on the gelation of sodium silicate was also studied [23].…”

Section: Thermodynamic Analysis Of Mgsrs Acid Dissolution Separationmentioning

confidence: 99%

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Tan,

Han,

Wei

et al. 2023

Silicon

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Under the demand of global green and low-carbon development, it is urgent to recycle silicon from metallurgical-grade silicon refined slag (MGSRS).Content of elemental silicon (Si) in MGSRS is the key of silicon recovery, and directly affects the selection and economic value of the silicon recovery technology.In this study, a two-step dissolution chemical analysis method is proposed to separate and determine the silicon and other silicon phases content of MGSRS. First, the silicate in the MGSRS was dissolved by hydrochloric acid to obtain the silicate content, and mixed particles containing silicon and silicon carbide (SiC) were separated. Second, silicon was dissolved by a mixture of nitric and hydrofluoric acid (HF/HNO3), and the SiC particles were separated, then the Si and SiC content were determined respectively. During the two steps, the dissolution effect and repeatability of silicate and silicon with different acid was studied. Finally, The silicon content in MGSRS measured by the two-step chemical method was 21.84±0.53%, under the condition of volume ratio of HNO3:HF is 1:1 and reaction time is 1h. This method breaks the situation that the content of elemental silicon in MGSRS is estimated only by experience. It has a positive impact on the further development of silicon recovery from MGSRS and can reduce environmental pollution.

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Section: Thermodynamic Analysis Of Mgsrs Acid Dissolution Separationmentioning

confidence: 99%

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Tan,

Han,

Wei

et al. 2023

Silicon

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show abstract

“…Their study revealed that the powder rheology properties and mechanical performances were considerably enhanced. The core–shell structured calcium silicate composite filler studied by Li et al 9 demonstrated its capability in increasing the tensile and tear indices of hand sheets. The superiorities of core–shell structured particles for improving the composite performances were clearly evidenced.…”

Section: Introductionmentioning

confidence: 99%

Chemically activated core–shell structured IF-WS₂@C nanoparticles enhance sugarcane-based carbon/epoxy nanocomposites

et al. 2021

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“…For example, bio-nanotechnology, optics, electroluminescence devices, bio-imaging energy storage materials, etc. [1][2][3][4][5][6][7][8] .…”

mentioning

confidence: 99%

Controlled synthesis and luminescence properties of core-shell-shell structured SiO2@AIPA-S-Si-Eu@SiO2 and SiO2@AIPA-S-Si-Eu-phen@SiO2 nanocomposites

Qiao

Bao

et al. 2020

Sci Rep

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open Scientific RepoRtS | (2020) 10:3522 | https://doi.org/10.1038/s41598-020-60538-w www.nature.com/scientificreports www.nature.com/scientificreports/ Over the years, though the core-shell structured nanocomposite with silica coating inorganic materials were successive studied [17][18][19] , but their weaker luminescent properties limit their application in many fields. However, the rare earth organic complexes have excellent luminescence properties, which the energy of the organic ligands was efficiently transferred into the rare earth ions by "antenna effect" 20 . Besides, rare earth organic complexes have strong and narrow emission bands and are widely used in many optical fields. Unfortunately, rare earth organic complex themselves are still restricted from being utilized in practical applications due to their poor thermal and mechanical stability 13 . If the rare earth organic complex were immobilized on the surface of the silica, the silica core can reduce the skeleton vibration of the ligand, thereby effectively improving the stability and luminescence intensity of the complex [21][22][23] . The nanocomposites with silica as the core and rare earth complexes as the shell have good luminous properties, which make them more widely used. However, in the core-shell structured nanocomposites, the rare earth organic complex of the outer shell layer being exposed to the environment, which tends to quench the luminescence. In order to overcome this problem, the core-shell structured nanocomposite is coated with an amorphous silica to form a core-shell-shell structured nanocomposite, which can improve the luminescent properties of nanocomposites. The core-shell-shell structured nanocomposites designed in this way has excellent luminescence properties and good stability. In addition, the SiO 2 shell coated on the surface of the core-shell structured nanocomposite is easily condensed with the -OH group on other molecules to form a Si-O-Si network, and various functional groups are easily introduced into the silica shell, which is widely used in biomedicine [24][25][26] .Up to now, there are two main methods for preparing core-shell structured nanocomposites: direct precipitation method and silane coupling agent method. Direct precipitation method is to deposit functional shell materials directly on the surface of SiO 2 core. The method is simple to operate, but the prepared nanocomposites are unstable and prone to collapse. The silane coupling method is to join the SiO 2 core and the shell by a covalent bond. What' more, the shell layer thickness of nanocomposites is easy to control and structurally stable via this method. The realization of this method is challenging. It was have a silane coupling agent called a "molecular bridge" to bond rare earth ions and SiO 2 . Accordingly, it is important to choose a suitable silane coupling agent.In this work, firstly, we synthesized the bifunctional organic ligands ((HOOC) 2 C 6 H 3 NHCONH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 , it is obtained by single-substitution of hydrogen atom ...

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Preparation of core/shell structured silicate composite filler and its reinforcing property

Cited by 16 publications

References 44 publications

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Chemically activated core–shell structured IF-WS₂@C nanoparticles enhance sugarcane-based carbon/epoxy nanocomposites

Controlled synthesis and luminescence properties of core-shell-shell structured SiO2@AIPA-S-Si-Eu@SiO2 and SiO2@AIPA-S-Si-Eu-phen@SiO2 nanocomposites

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Preparation of core/shell structured silicate composite filler and its reinforcing property

Cited by 16 publications

References 44 publications

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Determination of Silicon Content in Metallurgical-Grade Silicon Refined Slag using Two-Step Dissolution Chemical Analysis Method

Chemically activated core–shell structured IF-WS2@C nanoparticles enhance sugarcane-based carbon/epoxy nanocomposites

Controlled synthesis and luminescence properties of core-shell-shell structured SiO2@AIPA-S-Si-Eu@SiO2 and SiO2@AIPA-S-Si-Eu-phen@SiO2 nanocomposites

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Chemically activated core–shell structured IF-WS₂@C nanoparticles enhance sugarcane-based carbon/epoxy nanocomposites