Chitosan-Graft-Sodium Alginate Encapsulated Vanadium Pentoxide (V2 O5 ) Nanocomposite for Adsorption and Antimicrobial Studies

Abstract

A hybrid vanadium pentoxide (V2 O5 )/chitosan-graft-sodium alginate nanocomposite was synthesized via the graft co-polymerization technique. The nanocomposite was characterized by X-ray diffraction analysis, Fourier transform infra-red spectroscopy, scanning electron microscopy and transmission electron spectroscopy. Batch studies was employed for the adsorption of model methyl violet onto V2 O5 /chitosan-graft-sodium alginate from aqueous solution. The adsorption best suited the Langmuir isotherm and pseudo-second order kinetic model. The positive value of the change in enthalpy, ΔH° (6.62 kJ/mol.) established an endothermic process. The negative values of the free Gibbs energy, ΔG° ( -4.19 to -4.87 kJ/mol.K) within the range of temperatures of 300 K to 318 K, indicated that the adsorption process was thermodynamically favourable and spontaneous. The value of the change in entropy, ΔS° (0.035 kJ/mol) revealed a randomness in the adsorption process. These outcomes show a potential use of V2 O5 /chitosan-graft-sodium alginate composite for the removal of organic dyes from polluted water.

Surface‐Modified Mesoporous V2‐xSb2xO5‐δ Ceramics for Improving the Electrostatic Chemisorption of Methylene Blue

“…The adsorption data obtained from 50 mg of SBVO8 compound in 5 ppm-40 ppm(5 ppm step size) of MB dye solution was fitted to the Freundlich, Langmuir and Dubinin-Radushkevich (DÀ R)and Temkin adsorption isotherm models. [11] Langmuir isotherm model showcases a uniform surface adsorption. The linear form is…”

“…[11] et al also reported V 2 O 5 /chitosan graft sodium alginate nanocomposite for the adsorption of model dye, methyl violet, from water and the effects of adsorption parameters were investigated and analyzed by different adsorption isotherms. [11] V 2 O 5 compounds intercalated with alkylimidazolium, the cation of an ionic liquid, exhibit lower adsorption capacities for dyes such as methyl orange and rhodamine B. However, their adsorption efficiency for methylene blue is higher, reaching 81 wt % within a short time frame, and they completely removed 10 ppm of methylene blue within 80 minutes.…”

“…This method achieved 90 % removal efficiency of methylene blue at pH 9 using an optimal dose of 200 mg in 50 mL of 50 mg/mL methylene blue solution. Bernice Y. Danu1 [11] . et al also reported V 2 O 5 /chitosan graft sodium alginate nanocomposite for the adsorption of model dye, methyl violet, from water and the effects of adsorption parameters were investigated and analyzed by different adsorption isotherms [11] .…”

Controlled synthesis of MWCNTs/V2O5 nanocomposite by hydrothermal approach for adsorption and photodegradation processes

“…Using nano-metal oxides as adsorbent materials is an efficient technique for water cleaning from major pollutants like aromatic compounds, heavy metals, and dyes. In recent years, finding clean water for human consumption and other applications has become more challenging because of the increased demand for water resources and pollution by anthropogenic and natural means [16]. Industries such as dyeing, textile, paint, and leather tanning are the largest sources of the release of wastewater [17,18].…”

“…Industries such as dyeing, textile, paint, and leather tanning are the largest sources of the release of wastewater [17,18]. It is assumed that the wastewater generated after the dyeing and finishing processes from textile plants is regarded as the most contaminant of all the industrial sources, considering the magnitude and composition of the released effluents [16].…”