Anisotropic growth and photoluminescence of Li2Si2O5 hydrate rods

Zhang, Hui; Wang, Jinxiao; Yang, Jianfeng

doi:10.1007/s10854-019-02090-6

Cited by 4 publications

(5 citation statements)

References 27 publications

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“…Similar crystal growth mechanisms have been reported in our previous work [33,34]. In addition, these single crystal structures were found to be anisotropic, which is advantageous for the efficient diffusion of ions and exposure of more adsorption sites, thus improving the adsorption performance of the material [35]. XRD spectrum of the LDCC is shown in Fig.…”

Section: Resultssupporting

confidence: 82%

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Li2Si2O5 nano-brush coated carbon cloth as a potential solution for wastewater treatment

Sun

Chen

Zhang

et al. 2023

Separation and Purification Technology

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Section: Resultssupporting

confidence: 82%

“…The left diffraction peaks at the 2θ angles of 11.9°, 12.8°, 20.1°, 21.2°, 21.8°, 29.8°, 34.1° and 35.5° are related to the planes of (110), (020), ( 200), ( 210), (021), ( 221), (150), and (002) of Li2Si2O5, respectively (JCPDS card no. 33-0816) [32,35]. No other peaks were found from the XRD spectrum.…”

Section: Resultsmentioning

confidence: 92%

Li2Si2O5 nano-brush coated carbon cloth as a potential solution for wastewater treatment

Sun

Chen

Zhang

et al. 2023

Separation and Purification Technology

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“…LD whiskers with nanometer and micro scale grown from single crystal can provide more crystallization sites, which is conducive to the formation of crystallization sites and further growth of crystals. The mechanical properties are greatly improved by compressive stress reinforcement, phase transformation and bridging toughening mechanisms (Zhang et al, 2019b;Zhao et al, 2021;Yan et al, 2022). On the other hand, heat treatment processes are most efficient for intensifying the performance by adjusting crystallization phases and microstructure, such as grain shape, grain size, and distribution (Sun et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Optimization of heat treatment program and effect of heat treatment on microstructure and flexural strength of micro-nano-Li2Si2O5 whisker-reinforced glass-ceramics

Yao

Zhao

et al. 2023

Front. Mater.

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Lithium disilicate (Li2Si2O5, referred as LD) glass ceramics with unique aesthetic properties are ideal dental restorative materials. However, their applications are limited due to the lower flexural strength than polycrystalline ceramics. Herein, micro-nano-LD whiskers were utilized to facilitate the formation of crystallization sites and further growth of crystals in SiO2-Li2O glasses during the heat treatment process. Meanwhile, an orthogonal experiment with four-factor three-level was designed, and the optimum heat treatment conditions for preparing LD glass-ceramics with excellent flexural strength were found. The order of influencing extent of heat treatment conditions is crystallization temperature > crystallization time > nucleation temperature > nucleation time. In addition, the crystallization behavior, phase formation, microstructure and flexural strength of glass were measured at different heat treatment temperatures. Remarkably, the optimal LD glass-ceramics sample has a strong flexural strength at 342 MPa, in which plentiful crystal grains with uniform and dense distribution are observed. These results indicate that micro-nano-LD whisker-reinforced glass-ceramics obtained by optimized heat treatment program offer a potential candidate for dental applications.

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“…Hence, it is necessary to develop a more advanced technique to prepare porous LD glass–ceramics possessing more uniform pore structures. H. Zhang et al also found that LD crystals had great advantages for the effective adsorption of heavy metal ions [ 16 , 17 ] and methylene blue [ 10 , 18 ], indicating their potential use in wastewater treatment. However, developed LD-related materials only include nanomaterials [ 10 , 16 , 18 ], and LD nano-brush-coated cloths [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…H. Zhang et al also found that LD crystals had great advantages for the effective adsorption of heavy metal ions [ 16 , 17 ] and methylene blue [ 10 , 18 ], indicating their potential use in wastewater treatment. However, developed LD-related materials only include nanomaterials [ 10 , 16 , 18 ], and LD nano-brush-coated cloths [ 17 ]. The lack of a self-supporting structure limits their durability in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Porous Lithium Disilicate Glass–Ceramics Prepared by Cold Sintering Process Associated with Post-Annealing Technique

Lyu,

Seo,

Han

et al. 2024

Materials

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Using melt-derived LD glass powders and 5–20 M NaOH solutions, porous lithium disilicate (Li2Si2O5, LD) glass–ceramics were prepared by the cold sintering process (CSP) associated with the post-annealing technique. In this novel technique, H2O vapor originating from condensation reactions between residual Si–OH groups in cold-sintered LD glasses played the role of a foaming agent. With the increasing concentration of NaOH solutions, many more residual Si–OH groups appeared, and then rising trends in number as well as size were found for spherical pores formed in the resultant porous LD glass–ceramics. Correspondingly, the total porosities and average pore sizes varied from 25.6 ± 1.3% to 48.6 ± 1.9% and from 1.89 ± 0.68 μm to 13.40 ± 10.27 μm, respectively. Meanwhile, both the volume fractions and average aspect ratios of precipitated LD crystals within their pore walls presented progressively increasing tendencies, ranging from 55.75% to 76.85% and from 4.18 to 6.53, respectively. Young’s modulus and the hardness of pore walls for resultant porous LD glass–ceramics presented remarkable enhancement from 56.9 ± 2.5 GPa to 79.1 ± 2.1 GPa and from 4.6 ± 0.9 GPa to 8.1 ± 0.8 GPa, whereas their biaxial flexural strengths dropped from 152.0 ± 6.8 MPa to 77.4 ± 5.4 MPa. Using H2O vapor as a foaming agent, this work reveals that CSP associated with the post-annealing technique is a feasible and eco-friendly methodology by which to prepare porous glass–ceramics.

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Anisotropic growth and photoluminescence of Li2Si2O5 hydrate rods

Cited by 4 publications

References 27 publications

Li2Si2O5 nano-brush coated carbon cloth as a potential solution for wastewater treatment

Li2Si2O5 nano-brush coated carbon cloth as a potential solution for wastewater treatment

Optimization of heat treatment program and effect of heat treatment on microstructure and flexural strength of micro-nano-Li2Si2O5 whisker-reinforced glass-ceramics

Porous Lithium Disilicate Glass–Ceramics Prepared by Cold Sintering Process Associated with Post-Annealing Technique

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