Free carbon phase in SiOC glasses derived from ladder-like silsesquioxanes

Jeleń, Piotr; Bik, Maciej; Nocuń, Marek; Gawęda, M.; Długoń, E.; Sitarz, Maciej

doi:10.1016/j.molstruc.2016.03.096

Cited by 51 publications

(45 citation statements)

References 21 publications

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“…It is typical to receive two amorphous ''halo'' on diffraction patterns of ladder-like silsesquioxane samples (Fig. 2) [7,8,18]. Their presence, along with the conducted MIR studies (Figs.…”

Section: Resultsmentioning

confidence: 89%

“…The MTES-CH 3 Si(OCH 3 ) 3 (T units) and DMDES-((CH 3 ) 2 Si(OC 2 H 5 ) 2 ) (D units) were used as a silsesquioxane precursors [11,22,23] 2/1, and 4/1 were synthesized according to the procedure described in our previous papers [7,18,35]. To obtain glassy SiCxOy, dried samples (xerogels) were subsequently heat-treated in a tube furnace at 200, 400, 600, 800, and 1000°C temperature ranges under flowing argon atmosphere.…”

Section: Methodsmentioning

confidence: 99%

“…First one states that free carbon phase is distributed inside SiO 2 glassy matrix, while the second one states that amorphous silica is closed inside graphite/graphene network [5,6]. In our previous work, we tried to describe the formation of free carbon phase in silicon oxycarbide glasses pyrolized at temperature ranging from 200 to 800°C [7]. Many routs can be employed to achieve black glasses [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work, we tried to describe the formation of free carbon phase in silicon oxycarbide glasses pyrolized at temperature ranging from 200 to 800°C [7]. Many routs can be employed to achieve black glasses [7][8][9][10]. Depending on desired outcome-final product properties, a variety of preceramic materials with different function groups can be used-like methyl, ethyl, and vinyl [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Depending on desired outcome-final product properties, a variety of preceramic materials with different function groups can be used-like methyl, ethyl, and vinyl [11][12][13][14]. Changing the precursor can lead to formation of different black glasses, e.g., materials with or without free carbon phase [5,7,15,35]. From the variety of possible applications, at least few should be mentioned, i.e., anodes for Li-ion batteries [16], material for artificial heart valves [17], and protective coatings [4].…”

Section: Introductionmentioning

confidence: 99%

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Thermal evolution of ladder-like silsesquioxanes during formation of black glasses

Jeleń

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Gawęda

et al. 2017

J Therm Anal Calorim

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Pyrolysis of ladder-like silsesquioxanes in oxygen-free atmosphere leads to the formation of silicon oxycarbides (black glasses). Black glasses are materials of amorphous silica structure where some amount of O 2-ions were replaced by C 4-ions. This exchange leads to local increase in bonds density and therefore improvement in mechanical, thermal, and chemical properties. Thanks to this modification, silicon oxycarbide glasses can be used in a variety of applications like: protective coatings and interconnectors in solid oxide fuel cells. Xerogels were prepared by sol-gel method, and ladder-like silsesquioxanes were used as precursors. Samples were burned at 200-1000°C in inert atmosphere. Structural studies in the middle infrared range (MIR) and SEM with EDX confirmed the presence of SiOC bonds in obtained materials. MIR analysis of solid samples together with TG/dTG measurements allowed defining the process for the formation of black glasses.

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Section: Resultsmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermal evolution of ladder-like silsesquioxanes during formation of black glasses

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J Therm Anal Calorim

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Isoniazid‐sensing Behavior of a Hybrid Silsesquioxane and Cobalt Pentacyanonitrosylferrate‐based Nanocomposite

Magossi

Filho

et al. 2021

Electroanalysis

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A novel silsesquioxane and cobalt nitroprusside compound was prepared from octa(aminopropyl)silsesquioxane, resulting in a nanocomposite (ACCoN), which was then characterized by different spectroscopic techniques. The cyclic voltammograms of the ACCoN‐modified graphite paste electrode indicated a redox pair with a formal potential (Eθ′)=0.38 V, assigned to the Co(II)Fe(II)(CN)5NO/Co(II)Fe(III)(CN)5NO redox couple. The ACCoN‐modified graphite paste electrode was sensitive to isoniazid concentrations, presenting a linear response at a concentration range from 6.0×10−7 to 1.0×10−5 mol L−1, with limit of detection and amperometric sensitivity of 5.53×10−7 mol L−1 and 0.17 A/mol L−1, respectively.

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Porous Carbon Nanosphere with Multiple Heteroatom Doping Derived from Silicon Oxycarbonitride as Sulfur Host for Lithium–Sulfur Batteries

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Free carbon phase in SiOC glasses derived from ladder-like silsesquioxanes

Cited by 51 publications

References 21 publications

Thermal evolution of ladder-like silsesquioxanes during formation of black glasses

Thermal evolution of ladder-like silsesquioxanes during formation of black glasses

Isoniazid‐sensing Behavior of a Hybrid Silsesquioxane and Cobalt Pentacyanonitrosylferrate‐based Nanocomposite

Porous Carbon Nanosphere with Multiple Heteroatom Doping Derived from Silicon Oxycarbonitride as Sulfur Host for Lithium–Sulfur Batteries

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