Hydrothermal, microwave and mechanochemical modification of amorphous zirconium phosphate structure

Khalameida, S.; Sydorchuk, V.; Skubiszewska–Zięba, J.; Charmas, B.; Skwarek, Ewa; Janusz, W.

doi:10.1007/s10973-016-5965-x

Cited by 25 publications

(24 citation statements)

References 41 publications

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“…4b) increase. It should be noted that similar results were earlier obtained for silica, tin dioxide and zirconium phosphate after their MChT [19][20][21]. It is well known that the specific surface area and pore volume depend on the globules size and their packing density in the skeleton of globular porous solids [29].…”

Section: Porous Structuresupporting

confidence: 76%

“…Additional possibilities for adjusting the parameters of the porous structure are provided by modification in the wet gel stage before drying [11,18]. This was exemplarily confirmed using oxides and phosphates [19][20][21][22]. Moreover, the efficiency of MWT and MChT application for regulation of physical-chemical properties of other semiconductor oxides was demonstrated in the studies [20,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 77%

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Mechanochemical and microwave treatment of precipitated zirconium dioxide and study of its physical–chemical, thermal and photocatalytic properties

Kucio

Sydorchuk²,

Khalameida³

et al. 2020

J Therm Anal Calorim

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The effects of the microwave treatment (MWT) and mechanochemical treatment (MChT) on the structure and physicochemical properties of precipitated zirconium oxide were investigated. The obtained materials were characterized using the N2 adsorption/desorption, thermogravimetry (TG, DTG, DTA), XRD and UV–Vis/DRS methods. Photocatalytic properties of the samples were also studied as regards the rhodamine B (RhB) degradation in the aqueous solution. The results show that the microwave and MChT, differing in mill rotation speed, temperature or treatment media, causes significant changes in the porous structure of the obtained samples. In most samples, the specific surface area increase was observed. The DTA and XRD results showed the formation of crystalline structure during MWT. As follows from the investigations, each way of modification results in the shift of the absorption edge toward higher wavelength values and causes photocatalytic degradation of RhB under UV irradiation and makes the obtained materials effective photocatalysts in the visible region.

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Section: Porous Structuresupporting

confidence: 76%

Section: Introductionmentioning

confidence: 77%

Mechanochemical and microwave treatment of precipitated zirconium dioxide and study of its physical–chemical, thermal and photocatalytic properties

Kucio

Sydorchuk²,

Khalameida³

et al. 2020

J Therm Anal Calorim

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“…Amorphous, microcrystalline and nanocrystalline materials were obtained in different conditions. Amorphous gel materials were generally obtained by reaction between phosphoric acid and zirconyl chloride in water, without using any complexing agent for Zr(IV) [ 33 , 34 , 35 , 40 ], while post treatments of amorphous ZrP produced powders, granules and thin films [ 41 , 42 ]. Sol–gel and template methods were also developed in order to produce ZrP materials with different morphologies and porosity [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ].…”

Section: Structure Of Zirconium Phosphatementioning

confidence: 99%

Treatment of Wastewaters with Zirconium Phosphate Based Materials: A Review on Efficient Systems for the Removal of Heavy Metal and Dye Water Pollutants

Pica

2021

Molecules

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Layered zirconium phosphate (ZrP) is a versatile material with phosphate (POH ) groups able to exchange inorganic and organic cations or to intercalate basic molecules. The present review deals with the use of this material as a sorbent for heavy metal cations or dye molecules in wastewater treatments. The possibility to combine ZrP with polymers or other inorganic materials, in order to have suitable systems for real and large scale applications, was investigated, as well as the combination with photocatalytic materials to obtain hetrogeneous photocatalysts for the capture and photodegradation of organic dye molecules.

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“…The characteristics can be also varied during further treatment of as-prepared phosphates, i.e., during modification of the sample structure. For example, hydrothermal (HTT) and mechanochemical (MChT) techniques are effective methods which allow to modify phosphates of different structures and adsorption properties [13,14]. However, there are only few papers [15][16][17] which deal with modification of titanium phosphate structure using HTT.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the authors of [16,17] studied the HTT of TiP at low temperatures-130 and 160°C. It should be noted that only dried xerogels were investigated, although modification in the stage of wet gel enhances the control of the porous structure parameters [14,15]. MChT of TiP was not investigated earlier.…”

Section: Introductionmentioning

confidence: 99%

Modification of titanium phosphate precipitated from titanylsulfate

Janusz

Khalameida²,

Skwarek

et al. 2018

J Therm Anal Calorim

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The titanium phosphate-synthesized sol-gel method was subjected to the mechanochemical treatment in a planetary ball mill Pulverisette 6 in air or water environment or the hydrothermal treatment at 873 K or 1073 K. The properties of such modified/treated samples were examined using the XRF, XRD, TGA, static light scattering, FTIR Raman and adsorption/ desorption of N 2 methods. The mechanochemical treatment of xerogel samples leads to a small decrease in water contents in the sample, but the structure remains amorphous. Additionally, during milling of the sample aggregation of titanium phosphate particles and a decrease in specific surface area were observed. The hydrothermal treatment of the xerogel sample leads to a crystal product composed of titanium oxide phosphate hydrate, titanium oxide phosphate and titanium dioxide. The TGA analysis confirms the presence of titanium oxide phosphate hydrate. The hydrothermally treated titanium phosphate samples are monodispersed and have a larger specific surface area than the initial sample.

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Hydrothermal, microwave and mechanochemical modification of amorphous zirconium phosphate structure

Cited by 25 publications

References 41 publications

Mechanochemical and microwave treatment of precipitated zirconium dioxide and study of its physical–chemical, thermal and photocatalytic properties

Mechanochemical and microwave treatment of precipitated zirconium dioxide and study of its physical–chemical, thermal and photocatalytic properties

Treatment of Wastewaters with Zirconium Phosphate Based Materials: A Review on Efficient Systems for the Removal of Heavy Metal and Dye Water Pollutants

Modification of titanium phosphate precipitated from titanylsulfate

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