Influence of the use of rice husk as source of silica on the sol-gel synthesis of bioglass

Pereira, M. A.; Oliveira, Juliano Elvis de; Fonseca, Carlos M.

doi:10.1590/0366-69132021673833134

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Overall, the weak band at 458 cm -1 corresponds to the presence of silanol functional group (Si-OH) and siloxane (Si-O-Si) [31], which predicts binding with reduced iron ions. This fact agrees with [32] to unveil the reduction of the δ-FeOOH phase within the range of 420 and 663 cm -1 .…”

Section: The Results Of Actual Func Tional Groups Characterization Re...mentioning

confidence: 99%

Unraveling the study of liquid smoke from rice husks as a green corrosion inhibitor in mild steel under 1 M HCl

Kaban

Mayangsari

Anwar

et al. 2022

EEJET

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The work provides the more comprehensive development of Liquid Smoke from Rice Husks Ash (RHA). Notably, the study focuses on the interaction between the primary molecules of inhibitor and mild steel, including thermodynamic calculation and surface treatment upon addition of inhibitor. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP) characterization were utilized to evaluate the anticorrosion of RHA. The Raman Spectroscopy pre and post-addition of RHA’s inhibitor were used to compare the adsorbed functional group of inhibitors. Moreover, the thermodynamic calculation of the inhibitor’s adsorption determines the types of adsorption of the inhibitor. As a result of the adsorption process, the Scanning Electronic Microscope-Energy Dispersive X-Ray (SEM-EDX) aided by The Atomic Force Microscopy (AFM) and Contact Angle Test was implemented to unveil the surface treatment and the change of elemental composition after the addition of an 80 ppm inhibitor. The PP and EIS results show a significant depression of the current density at ‒2.75 μA·cm2 in 80 ppm solution with the highest inhibition efficiency of 99.82 %. The superior inhibition correlates to the adsorption of Si–OH, C–C, C–O–C, >C=O, complex structure, and –OH at wavenumber 458, 662, 1095, 1780, and 3530 cm-1. The LS shows a significant surface area of protection of 0.9982 and high adsorption constant (Kads) at 11.648. The calculated ΔGads of ‒6.59 kJ/mol unveils the chemisorption in nature. At the same time, a combination of 20 and 80 ppm solution is predicted adsorbed horizontally to reduce the contact between the solution and substrate, as shown in SEM and AFM results. It also increases the contact angle and their corresponding hydrophobicity

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Section: The Results Of Actual Func Tional Groups Characterization Re...mentioning

confidence: 99%

Unraveling the study of liquid smoke from rice husks as a green corrosion inhibitor in mild steel under 1 M HCl

Kaban

Mayangsari

Anwar

et al. 2022

EEJET

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“…Synthesis of bioactive glass: the bioglass (BRHA) was produced with the composition of 50 SiO 2 -25 CaO-25 Na 2 O (%mol) in previous work [12], through the sol-gel process, with the use of rice husk ash (RHA) as a source of silica (SiO 2 ). The rice husk ash was obtained by the calcination of the rice husk treated with oxalic acid.…”

Section: Methodsmentioning

confidence: 99%

Biogenic synthesis of silver nanoparticles from thyme extract for functionalization of a bioactive glass produced from rice husk ash

et al. 2022

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The rice husk, agro-industrial residue, stands out for having silica, the main oxide former of the bioactive glass. To avoid contamination in this biomaterial, substances with bactericidal properties, like silver can be incorporated. Thus, the objective of this work is the synthesis of silver nanoparticles to functionalize a bioactive glass synthesized from rice husk ash (BRHA). The bioglass was prepared by the sol-gel method from the rice husk ash as a silica source. Silver nanoparticles were synthesized from thyme extract with AgNO 3 and their formation was verified by UV-vis spectroscopy. The glass powder was added to this solution and its structure was evaluated by SEM-EDS, ATR-FTIR, and microbiology. The bioglass powder appeared in the form of porous agglomerates and the addition of silver altered its superficial roughness by deposition. The chemical bonds of the glass network related to bioactivity were maintained after the incorporation of the nanoparticles. Microbiological analysis by the agar diffusion test confirmed the inhibitory action of the nanoparticles for P. aeruginosa and S. aureus. Therefore, the developed material presented great potential for biomedical applications.

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“…The network of bioactive glasses is composed mainly of silica. The source of silica may be alkoxysilanes, tetraethyl or tetramethyl orthosilicates and rice husk (90% silicon and 10% lignin), which constitutes 23% of the rice mass (Pereira et al, 2021). A novel and alternative source is biosilica from diatom cultures (Adams et al, 2017).…”

Section: Properties and Applications Of Bioactive Glassesmentioning

confidence: 99%

Glass and Glass-Ceramic Porous Materials for Biomedical Applications

Kędzia,

Lubas,

Dudek

2023

System Safety: Human - Technical Facility - Environment

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Biosilicate glasses and glass-ceramic materials obtained on their basis are an important research area in tissue engineering due to their ability to regenerate bones. The most important features of bioactive glasses include: the ability to biodegrade and high bioactivity. Appropriate porosity, pore size, surface structure and topography, chemical composition and ion release kinetics, as well as mechanical properties enable the adhesion of mesenchymal cells and their differentiation towards osteoblast cells and stimulate further proliferation and angiogenesis. This study concerns the subject of bioglass, in particular Bioglass 45S5 and glass-crystalline porous materials in the context of their properties enabling the reconstruction of bone tissue and possible applications. The article addresses crucial issues of shaping the properties of glass and glasscrystalline porous structures by introducing changes in their composition and the method of their production, and also discusses the importance of foaming agents.

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Influence of the use of rice husk as source of silica on the sol-gel synthesis of bioglass

Cited by 5 publications

References 21 publications

Unraveling the study of liquid smoke from rice husks as a green corrosion inhibitor in mild steel under 1 M HCl

Unraveling the study of liquid smoke from rice husks as a green corrosion inhibitor in mild steel under 1 M HCl

Biogenic synthesis of silver nanoparticles from thyme extract for functionalization of a bioactive glass produced from rice husk ash

Glass and Glass-Ceramic Porous Materials for Biomedical Applications

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