Application of ultrasonic treatment for increase the photochemical activity of electroexplosive bicomponent TiO₂-Ag nanoparticles | Izvestiya vuzov. Fizika. 2022. № 9. DOI: 10.17223/00213411/65/9/3

Application of ultrasonic treatment for increase the photochemical activity of electroexplosive bicomponent TiO₂-Ag nanoparticles

TiO₂-Ag nanoparticles with thermal and chemical stability, wide band gap and low toxic are more used photocatalysts for decomposition of organic substances. However, high rate of recombination of electron-hole pairs and high energy of photoactivation significantly limit their usage. Modification of TiO₂ with silver promotes surface separation of charges and increases their photochemical activity. In the present study for obtain TiO₂-Ag bicomponent nanoparticles was use electric explosion of metal wires in atmosphere 85 vol.% Ar - 15 vol.% O₂. This method has a high productivity (170-200 g/h) which is enough for industrial application of nanoparticles. However, electroexplosive nanoparticles are mostly agglomerates with a size of 200-500 nm, which significantly reduces their photochemical activity in the test reaction of decomposition of the model dye methylene blue under the visible light radiation. Ultrasonic treatment of nanoparticles in aqueous suspension for 15 min. contributed to an increase in the photoactivity of TiO₂-Ag nanoparticles by 10%.

Download file

Counter downloads: 50

Keywords

electric explosion of wires, composite nanoparticles, titanium oxide, silver, photocatalyst

Authors

Name	Organization	E-mail
Bakina O.V.	Institute of Strength Physics and Materials Science of SB RAS	ovbakina@ispms.tsc.ru
Svarovskaya N.V.	Institute of Strength Physics and Materials Science of SB RAS	nvsv@ispms.tsc.ru
Chzhjou V.R.	Institute of Strength Physics and Materials Science of SB RAS	chzhou.vr@ispms.ru
Suliz K.V.	Institute of Strength Physics and Materials Science of SB RAS	konstantin.suliz@gmail.com

Всего: 4

References

L i X. et al. //j. Environment. Chem. Eng. - 2021. - V. 9. - No. 5. - P. 106133.

Khan S.U.M. // Science. - 2002. - V. 297. - No. 5590. - P. 2243-2245.

Razavi-Khosroshahi H. //j. Mater. Chem. A. - 2017. - V. 5. - No. 38. - P. 20298-20303.

Wang Q. // Separation and Purification Technology. - 2019. - V. 211. - P. 866-872.

Li X. et al. //j. Environment. Chem. Eng. - 2021. - V. 9. - No. 5. - P. 106133.

Vakhrushev A.Y. et al. //j. Porous Mater. - 2021. - V. 28. - No. 4. - P. 1023-1030.

Negoescu D. et al. // Multidisciplinary Digital Publishing Institute Proceedings. - 2020. - V. 57. - No. 1. - P. 60.

Abbad S. et al. //j. Environment. Chem. Eng. - 2020. - V. 8. - No. 5. - P. 103718.

Dong Y.X. et al. // Renewable Energy. - 2019. - V. 135. - P. 1207-1212.

Bakina O.V. et al. //j. Mater. Sci.: Mater. Electron. - 2021. - V. 32. - No. 8. - P. 10623-10634.

Сваровская Н.В., Бакина О.В., Первиков А.В. и др. // Изв. вузов. Физика. - 2019. - Т. 62. - № 9. - С. 41-47.

Лернер М.И. // Физика и химия обработки материалов. - 2016. - № 3. - С. 73-80.

Диаграммы состояния двойных металлических систем: справочник: в 3 т. Т. 1. / под общ. ред. Н.П. Лякишева. - М.: Машиностроение, 1996. - 992 с.

Lerner M.I. et al. // Powder Technol. - 2016. - V. 288. - P. 371-378.

Lerner M.I. et al. // Inorgan. Mater.: Appl. Res. - 2017. - V. 8. - No. 3. - P. 473-478.