Influence of solution pH on forming silver molybdates obtained by sonochemical method and its application for methylene blue degradation

Ferreira, E. A. C.; Neto, N. F. Andrade; Bomio, M. R. D.; Motta, F. V.

doi:10.1016/j.ceramint.2019.03.012

Cited by 20 publications

(13 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 26 However, only one study for the preparation of silver molybdates by the sonochemical method was reported. 28 …”

Section: Introductionmentioning

confidence: 99%

“…26 However, only one study for the preparation of silver molybdates by the sonochemical method was reported. 28 Although all of these methods have led to prominent results, the experimental condition contains low efficiency, high temperature, and time of reaction, and the use of additives to control morphology makes them inefficient. Another property of metal oxides is their antibacterial activity, which can make them a good candidate for water purication.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

2022

View full text Add to dashboard Cite

show abstract

“… 26 However, only one study for the preparation of silver molybdates by the sonochemical method was reported. 28 …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

2022

View full text Add to dashboard Cite

show abstract

“…Recently, Ferreira et al [35] investigated the influence of the pH of the reaction medium on the -Ag2MoO4 obtained by the SC method, obtaining materials with different phases and particles with asymmetric shapes of nanorods (at acidic pH) and without a defined form (at basic pH) of micrometric order. The catalytic property of these powders was evaluated in the photocatalytic degradation of the methylene blue (MB) dye under ultraviolet light (UV) irradiation.…”

Section: Introductionmentioning

confidence: 99%

Effect of different synthesis routes on the morphology, optical, colorimetric, and photocatalytic properties of β-Ag2MoO4 microcrystals

Lopes,

Noleto,

Vieira

et al. 2022

Preprint

View full text Add to dashboard Cite

In this paper, the effect of different synthesis methods, such as controlled precipitation (CP), sonochemical (SC), hot solution ion injection with fast cooling (HSIIFC), and conventional hydrothermal (CH) in obtaining silver beta molybdate (β-Ag2MoO4) were reported. X-ray diffraction patterns, Rietveld refinement data, cluster modeling, micro-Raman, and Fourier transform infrared spectroscopies confirmed that all β-Ag2MoO4 crystals have a spinel-like cubic structure, space group (Fd\(\stackrel{-}{3}\)m), and symmetry point group (\({O}_{h}^{7}\)). Field emission scanning electron microscopy (FE-SEM) images showed that through different synthetic routes, it is possible to obtain monophasic crystals, such as regular/irregular polyhedral, potatoes, and non-uniform. Ultraviolet-Visible (UV-Vis) spectroscopy measurements in absorbance mode showed three main absorptions (280, 310, and 340 nm). In contrast, the UV-Vis analysis in diffuse reflectance mode showed a tail of energy absorption in the UV spectrum range (3.25 eV and 3.3 eV). The quantitative data from the colorimetric analysis indicated that the β-Ag2MoO4 crystals are desirable for developing inorganic pigments with a beige to brown shade. Photocatalytic tests were performed using four lamps: UV-C, UV-B, UV-A, and visible light. The β-Ag2MoO4 crystals prepared by the PC method showed a higher degradation rate ≈ 85.12% for the rhodamine B dye solution under 240 min of exposure to UV-C light.

show abstract

“…Recently, molybdate compounds have attracted great interest for their utilization in environmental applications such as the photocatalytic oxidation of dyes [ 59 , 60 , 61 , 62 ], the oxidation of methylene blue (MB) dye [ 63 ], and the sorption of water-soluble dyes [ 30 , 61 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Methylene Blue Dye Removal by Nickel Molybdate Nanosorbent

et al. 2021

View full text Add to dashboard Cite

Removing methylene blue (MB) dye from aqueous solutions was examined by the use of nickel molybdate (α-NiMoO4) as an adsorbent produced by an uncomplicated, rapid, and cost-effective method. Different results were produced by varying different parameters such as the pH, the adsorbent dose, the temperature, the contact time, and the initial dye concentration. Adsorbent dose and pH had a major removal effect on MB. Interestingly, a lower amount of adsorbent dose caused greater MB removal. The amount of removal gained was efficient and reached a 99% level with an initial methylene blue solution concentration of ≤160 ppm at pH 11. The kinetic studies indicated that the pseudo-second-order kinetic model relates very well with that of the obtained experimental results. The thermodynamic studies showed that removing the MB dye was favorable, spontaneous, and endothermic. Impressively, the highest quantity of removal amount of MB dye was 16,863 mg/g, as shown by the Langmuir model. The thermal regeneration tests revealed that the efficiency of removing MB (11,608 mg/g) was retained following three continuous rounds of recycled adsorbents. Adsorption of MB onto α-NiMoO4 nanoparticles and its regeneration were confirmed by Fourier transform infrared spectroscopy (FTIR) analysis and scanning electron microscopy (SEM) analysis. The results indicated that α-NiMoO4 nanosorbent is an outstanding and strong candidate that can be used for removing the maximum capacity of MB dye in wastewater.

show abstract

Influence of solution pH on forming silver molybdates obtained by sonochemical method and its application for methylene blue degradation

Cited by 20 publications

References 51 publications

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

Effect of different synthesis routes on the morphology, optical, colorimetric, and photocatalytic properties of β-Ag2MoO4 microcrystals

Highly Efficient Methylene Blue Dye Removal by Nickel Molybdate Nanosorbent

Contact Info

Product

Resources

About

Influence of solution pH on forming silver molybdates obtained by sonochemical method and its application for methylene blue degradation

Cited by 20 publications

References 51 publications

Sonochemical synthesis of inorganic cryogel Ag2Mo3O10@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

Sonochemical synthesis of inorganic cryogel Ag2Mo3O10@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

Effect of different synthesis routes on the morphology, optical, colorimetric, and photocatalytic properties of β-Ag2MoO4 microcrystals

Highly Efficient Methylene Blue Dye Removal by Nickel Molybdate Nanosorbent

Contact Info

Product

Resources

About

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties

Sonochemical synthesis of inorganic cryogel Ag₂Mo₃O₁₀@Ag/AgO: structural characterization, antibacterial activity, and dye adsorption properties