Sonochemical versus hydrothermal synthesis of bismuth tungstate nanostructures: Photocatalytic, sonocatalytic and sonophotocatalytic activities

Zargazi, Mahboobeh; Entezari, Mohammad Hassan

doi:10.1016/j.ultsonch.2018.10.010

Cited by 56 publications

(13 citation statements)

References 51 publications

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“…The surface of the support α -Al 2 O 3 ceramic tube is rough and porous, and the pore size is 3-7 µ m Literature [49,50] also reported that this method has a low membrane formation rate and needs many hydrothermal synthesis. The seed liquid scraping method is used.…”

Section: Resultsmentioning

confidence: 99%

Ethanol/Water Separation by Linda Type A Membrane

Zheng

2021

Preprint

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Ethanol / Water Separation Technology is a long term research. LTA molecular sieve, which is an industrially important desiccant as a kind of zeolite molecular sieve. It is always used in the reverse osmosis method, which is one of the sea water desalination, and extraction of industrial ethanol method in the world. Membrane separation technology is widely used in cell science[1, 2], human science[1, 2], microbial science[3], military industry, battery technology[4, 5] and so on. With 2 years invention and attempts, prototype membrane is finished and the filtered data has also been measured in different side, such as Linda Type A(LTA) making temperature, raw material ratio of membrane preparation and filter curves. The physicochemical analysis of the samples before and after filtration was carried out. The manbrane filtration losses are very low and can be used with food grade filtration

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Section: Resultsmentioning

confidence: 99%

Ethanol/Water Separation by Linda Type A Membrane

Zheng

2021

Preprint

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“…In the FT-IR spectra of 1 – 3 , between 500 and 1000 cm −1 , the characteristic peaks of W–O modes can be observed (Figure 7). The band at 820 cm −1 belongs to the stretching vibration of Bi–O, and the others below 750 cm −1 are assigned to the stretching and bridging stretching mode of W–O and W–O–W, respectively [25,28,50,54,67].…”

Section: Resultsmentioning

confidence: 99%

Effect of pH in the Hydrothermal Preparation of Bi2WO6 Nanostructures

et al. 2019

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In this study, Bi2WO6 was prepared by the hydrothermal method. The effects of reaction temperature (150/170/200 °C) and reaction time (6/12/24 h) were investigated. The role of strongly acidic pH (1 >) and the full range between 0.3 and 13.5 were studied first. Every sample was studied by XRD and SEM; furthermore, the Bi2WO6 samples prepared at different temperatures were examined in detail by EDX and TEM, as well as FT-IR, Raman and UV-vis spectroscopies. It was found that changing the temperature and time slightly influenced the crystallinity and morphology of the products. The most crystallized product formed at 200 °C, 24 h. The pure, sheet-like Bi2WO6, prepared at 200 °C, 24 h, and 0.3 pH, gradually transformed into a mixture of Bi2WO6 and Bi3.84W0.16O6.24 with increasing pH. The nanosheets turned into a morphology of mixed shapes in the acidic range (fibers, sheets, irregular forms), and became homogenous cube- and octahedral-like shapes in the alkaline range. Their band gaps were calculated and were found to vary between 2.66 and 2.59 eV as the temperature increased. The specific surface area measurements revealed that reducing the temperature favors the formation of a larger surface area (35.8/26/21.6 m2/g belonging to 150/170/200 °C, respectively).

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“…At the same time, the high intensity of the diffraction peak indicates that the crystals in the powder and the membrane have good crystallinity and the pore structure is complete. Literature also reported that this method has a low membrane formation rate and needs much hydrothermal synthesis [49,50]. The seed liquid scraping method is used.…”

Section: Characteristicsmentioning

confidence: 99%

Ethanol/Water Separation by Linda Type a Membrane

2022

JGEBR

View full text Add to dashboard Cite

Ethanol / Water Separation Technology is a long-term research. LTA molecular sieve, which is an industrially important desiccant as a kind of zeolite molecular sieve. It is always used in the reverse osmosis method, which is one of the seawater ddesalination, and extraction of industrial ethanol method in the world. Membrane separation technology is widely used in cell science, human science, microbial science, military industry, battery technology and so on. With 2 years invention and attempts, prototype membrane is finished and the filtered data has been measured in different side, such as Linda Type a (LTA) making temperature, raw material ratio of membrane preparation and filter curves [1-5]. The physicochemical analysis of the samples before and after filtration was carried out. The membrane filtration losses are very low and can be used with food grade filtration.

show abstract

Sonochemical versus hydrothermal synthesis of bismuth tungstate nanostructures: Photocatalytic, sonocatalytic and sonophotocatalytic activities

Cited by 56 publications

References 51 publications

Ethanol/Water Separation by Linda Type A Membrane

Ethanol/Water Separation by Linda Type A Membrane

Effect of pH in the Hydrothermal Preparation of Bi2WO6 Nanostructures

Ethanol/Water Separation by Linda Type a Membrane

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