Photocatalytic Degradation of Toxic Methyl Red Dye Using Silica Nanoparticles Synthesized from Rice Husk Ash

Bm, Vinoda; Vinuth, M.; Bodke, Yadav D.; Manjanna, J.

doi:10.4172/2161-0525.1000336

Cited by 24 publications

(3 citation statements)

References 16 publications

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“…There were absorption bands that overlapped in the wavenumber regions of 1625 and 1410 cm -1 that signify symmetrical bending vibration from the NH3 group coordinated with the Lewis acid site, and the asymmetric stretching vibration from NH4 + formed as a result of proton transfer from the Brønsted acid site to NH3 [13,14]. The presence of SO4 2ions had covered the surface of SiO2, causing the structure to be more amorphous [15,16]. In addition, the decrease in peak intensity on the SS2-600 confirmed that on the SiO2 matrix, sulfate ions were successfully impregnated.…”

Section: Resultsmentioning

confidence: 99%

Sulfuric Acid-Activated Silica Gel as a Potential Solid Acid Catalyst

Wangsa

Pratika

Ningrum

et al. 2022

KEM

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The conversion of silica gels into sulfated silicas (SO4/SiO2) have been carried out. The sulfation process of the catalysts was carried out by impregnation of sulfuric acids at concentrations of 1; 2; and 3 M and calcination temperatures of 500, 600, and 700 °C. Sulfation with 2 M H2SO4 and calcination temperature of 600 °C (SS2-600) produced a catalyst with the highest acidity value (5.13 mmol NH3 g-1). XRD analysis showed the formation of amorphous SiO2 phase, whereas SSA analysis showed that the SS2-600 catalyst had a mesoporous structure with a surface area of 147.728 m2/g, a total pore volume of 0.25 mL/g and a pore diameter of 6.439 nm. Characterization results show that sulfated silica gels have potency as solid acid catalysts.

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Section: Resultsmentioning

confidence: 99%

Sulfuric Acid-Activated Silica Gel as a Potential Solid Acid Catalyst

Wangsa

Pratika

Ningrum

et al. 2022

KEM

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“…Ensuring the prevention of recombination between the generated electrons and holes is crucial for achieving effective photocatalysis [76][77][78]. In the photocatalytic procedure, the active radicals include OH * , O2 *and the photogenerated holes.…”

Section: Photocatalysis Studiesmentioning

confidence: 99%

Development of SiO2/rGO from Rice Husk for Photocatalysis, Antioxidant, Electrochemical and Green Sensor Detection Studies

Swetha,

Venkata Lakshmi,

Mylarappa

et al. 2024

Silicon

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This study reports the extraction, characterization and development of reduced graphene oxide (rGO) doped silicon dioxide (SiO2) nanocomposite by simple reflux method. The nanocomposite was confirmed by using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and UV-Visible spectroscopy techniques. The photocatalysis of malachite green (MG) was carried out for rGO, SiO2 and SiO2/rGO nanocomposite shows higher MG degradation about 97% compared to rGO, SiO2 and follows 1 st order kinetics. The antioxidant action of SiO2/rGO nanocomposite was assessed using DPPH shows a more antioxidant activity (98 %) and lower IC50 about 488.35 mg/mL. From electrochemical, the specific capacitance (Csp) value of SiO2/rGO (114 F/g) was exhibits higher compared to rGO (75 F/g) and SiO2 (96 F/g) respectively. The CV and sensor detection of bee pollen and cow urine samples were performed using nickel mesh electrode in 1M KCl in the potential range -1 to 1 V. The SiO2/rGO was employed to analyze bee pollen and cow urine concentrations and the detection limits were found to be 0.260 mM and 0.413 mM respectively. The prepared electrode plays an important role for improving sensor detection of bee pollen and cow urine samples.

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“…There are different kinds of synthetic dyes which one of them is azo dyes (Park et al 2007;Wong and Yuen 1996). Azo dyes have one or more azo bonds (-N=N-) in their chemical structure and are immensely used in different industries, such as textile, leather, plastic, paper, food, cosmetics and pharmaceutical industry (Vinoda et al 2015;Berkane et al 2020). Most of these dyes were identified as toxic and mutagenic materials, even at the least concentration (Ayed et al 2019;Abou-El-Souod and El-Sheekh 2016).…”

Section: Introductionmentioning

confidence: 99%

Methyl red biodegradation based on Taguchi method by two novel bacteria

Marvi-Mashhadi

Sharifmoghadam

Goharimanesh

et al. 2021

Int. J. Environ. Sci. Technol.

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In this paper, the microbial degradation of methyl red (MR) was investigated by novel isolated bacteria S1 and K1 from wastewater effluent. Based on morphological, biochemical and molecular methods, strain S1 belonged to the Staphylococcus schleiferi subsp. coagulans GA 211 with 92.67% similarity (accession number MT573965) and strain K1 belonged to the Klebsiella michiganensis W14 with 99.85% similarity (accession number MT572941). To the best of our knowledge, this is the first report of dye degradation activity of these bacteria. The Taguchi Statistical Method (TSM) was used to optimize the experimental conditions. Taguchi's L 18 orthogonal array (OA) was performed, and the results were used to calculate signal-to-noise (S/N) ratios. According to S/N ratios, it was discovered that optimum experimental conditions are at pH 8, temperature 40°C, initial dye concentration 50 mg/l, carbon source glucose, rpm 75, inoculum 3% v/v and strain S1. Analyzing the results of the biodegradation assay by Minitab 19 statistical software, it was found that rpm and temperature are most and less effective in the MR biodegradation assay, respectively. Significant changes in the HPLC and UV-Vis spectrum of samples of strain S1 before and after biodegradation assay confirmed the complete biodegradation of MR by S1 strain.

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Photocatalytic Degradation of Toxic Methyl Red Dye Using Silica Nanoparticles Synthesized from Rice Husk Ash

Cited by 24 publications

References 16 publications

Sulfuric Acid-Activated Silica Gel as a Potential Solid Acid Catalyst

Sulfuric Acid-Activated Silica Gel as a Potential Solid Acid Catalyst

Development of SiO2/rGO from Rice Husk for Photocatalysis, Antioxidant, Electrochemical and Green Sensor Detection Studies

Methyl red biodegradation based on Taguchi method by two novel bacteria

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