Easy synthesis of CaB2O4 via pyrolysis of calcium fructoborate

Wagner, Claudia C.; Baran, Enrique J.

doi:10.1590/s1516-14392008000400020

Cited by 11 publications

(3 citation statements)

References 9 publications

(11 reference statements)

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“…Four peaks are observed for Ni x B. They are at 1458, 1273, 658, and 470 cm –1 , which corresponds to stretching vibration of BO, chain stretching vibration of −BOB–, bending vibration of BO and stretching vibration of NiO, respectively. , Ni x B/G sample has the feature peaks of both Ni x B and graphene. Herein, BO and NiO functional groups prove that Ni x B particles contain an oxidation series.…”

Section: Resultsmentioning

confidence: 95%

Interfacial Engineering of Nickel Boride/Metaborate and Its Effect on High Energy Density Asymmetric Supercapacitors

et al. 2019

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Solid materials with special atomic and electronic structures are deemed desirable platforms for establishing clear relationships between surface/interface structure characteristics and electrochemical activity. In this work, nickel boride (Ni x B) and nickel boride/graphene (Ni x B/G) are chosen as positive materials of supercapacitors. The Ni x B/G displays higher specific capacitance (1822 F g–1) than that of Ni x B (1334 F g–1) at 1 A g–1, and it still maintains 1179 F g–1 at 20 A g–1, suggesting the high rate performance. The asymmetric supercapacitor device (Ni x B/G//activated carbon) also delivered a very high energy density of 50.4 Wh kg–1, and the excellent electrochemical performance is ascribed to the synergistic effect of Ni x B, Ni(BO2)2, and graphene that fully enhances the diffusion of OH– and the electron transport. During the cycles, the prepared ultrafine Ni x B nanoparticles will be gradually in situ converted into β-Ni(OH)2 which has a smaller particle size than that prepared by other methods. This will enhance the utilization of Ni(OH)2 and decrease the ion diffusion distance. The electron deficient state of B in Ni(BO2)2 amorphous shell will make it easy to accept extra electrons, enhancing the adsorption of OH– at the shell surface. Moreover, Ni(BO2)2 makes strong adhesion between Ni x B (or β-Ni(OH)2) and graphene and protects the core structure in a stable state, extending the cycle life. The above properties of Ni x B/G endow the electrode good capacitive performance.

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Section: Resultsmentioning

confidence: 95%

Interfacial Engineering of Nickel Boride/Metaborate and Its Effect on High Energy Density Asymmetric Supercapacitors

et al. 2019

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“…FB, an anion complex of composition (C 6 H 10 O 6 ) 2 B − , has been identified from plants (Fig. 1) [54, 59, 60]. The investigation of this “nature–identical” complex has been performed using thermogravimetric analysis (TGA), X-ray diffraction (XRD), inductively coupled plasma–mass spectrometry (ICP-MS), Fourier-transform infrared (FTIR) spectroscopy, and Raman spectrometry techniques [46, 47, 54].…”

Section: Chemistry and Biochemistrymentioning

confidence: 99%

The Fructoborates: Part of a Family of Naturally Occurring Sugar–Borate Complexes—Biochemistry, Physiology, and Impact on Human Health: a Review

Hunter

Nemzer

Rangavajla

et al. 2018

Biol Trace Elem Res

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Sugar–borates (SBs) are mono- or di-sugar–borate esters (SBEs) comprised of one or two monosaccharide molecules linked to a boron (B) atom. SBEs occur naturally in commonly consumed herbs, vegetables, fruits, seeds, and nuts and, other than greatly varying levels of B found in local drinking water, are the primary natural dietary sources of B-containing molecules in humans. To date, the most studied SBE is calcium fructoborate (CaFB). CaFB represents an important example of how organic B-containing molecules are significantly distinct from their inorganic counterparts. During these past two decades, CaFB has been researched for its physical and biochemical characteristics, safety, and clinical outcomes. Results of these researches are presented and discussed herein. CaFB has been characterized using Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), high-performance thin-layer chromatography (HPTLC), nuclear magnetic resonance (NMR), liquid chromatography–multistage accurate mass spectrometry (LC-MSn), X-ray diffraction (XRD), Raman spectroscopy, and inductively coupled plasma (ICP) in non-biological and biological specimens. Potential health benefits of CaFB have been clinically investigated in pilot and efficacy studies demonstrating (i) significant reductions in knee discomfort and improved flexibility within 7, 14, and 90 days and (ii) significant effect on blood levels of inflammatory, cardiovascular, and other biomarkers. These studies support the use of CaFB as a dietary supplement for the management of joint discomfort. CaFB is presented here in order to illustrate how physiological benefits are imparted by distinct organic boron-containing molecules rather than solely by the element B itself. Considering recent National Health and Nutrition Examination Survey (NHANES) data reporting increases in age-related joint pain and an increasing elderly demographic, SBEs offer potential for safe, natural, and effective management of joint discomfort and improved mobility in human and animal health applications. Several of these studies may also open new opportunities for use of SBEs for health benefits beyond joint health.

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“…The results of the thermal analysis, together with those of X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy, led to the conclusion that CF is a natural identical product [32]. Since all B content of the CF is to be found completely in the decomposition product CaB 2 O 4 [33,34], with no evidence of solely boric acid decomposition at low temperatures (as the sharp TG loss and sharp DTG peaks up to 120-130°C), the conclusion is that CF has the following molecular composition Ca [(C 6 H 10 O 6 ) 2 B] 2 •4H 2 O, identical with the one of the natural product [18,32]. This formula reconfirms the expected content in B of the CF obtained by the chemical synthesis, which is two times higher than the one reported by Wagner et al [34].…”

Section: Molecular Composition Of Cfmentioning

confidence: 99%

Calcium Fructoborate—Potential Anti-inflammatory Agent

Scorei

Rotaru

2011

Biol Trace Elem Res

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Calcium fructoborate is a boron-based nutritional supplement. Its chemical structure is similar to one of the natural forms of boron such as bis-manitol, bis-sorbitol, bis-fructose, and bis-sucrose borate complexes found in edible plants. In vitro studies revealed that calcium fructoborate is a superoxide ion scavenger and anti-inflammatory agent. It may influence macrophage production of inflammatory mediators, can be beneficial for the suppression of cytokine production, and inhibits progression of endotoxin-associated diseases, as well as the boric acid and other boron sources. The mechanisms by which calcium fructoborate exerts its beneficial anti-inflammatory effects are not entirely clear, but some of its molecular biological in vitro activities are understood: inhibition of the superoxide within the cell; inhibition of the interleukin-1β, interleukin-6, and nitric oxide release in the culture media; and increase of the tumor necrosis factor-α production. Also, calcium fructoborate has no effects on lipopolysaccharide-induced cyclooxygenase-2 protein express. The studies on animals and humans with a dose range of 1-7 mg calcium fructoborate (0.025-0.175 mg elemental boron)/kg body weight/day exhibited a good anti-inflammatory activity, and it also seemed to have negligible adverse effect on humans.

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Easy synthesis of CaB2O4 via pyrolysis of calcium fructoborate

Cited by 11 publications

References 9 publications

Interfacial Engineering of Nickel Boride/Metaborate and Its Effect on High Energy Density Asymmetric Supercapacitors

Interfacial Engineering of Nickel Boride/Metaborate and Its Effect on High Energy Density Asymmetric Supercapacitors

The Fructoborates: Part of a Family of Naturally Occurring Sugar–Borate Complexes—Biochemistry, Physiology, and Impact on Human Health: a Review

Calcium Fructoborate—Potential Anti-inflammatory Agent

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