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October 8, 2026
HSE Experts Take Part in 23rd Annual Meeting of Valdai Discussion Club
The 23rd Annual Meeting of the Valdai Discussion Club was held from September 28 to October 1, 2026 under the theme ‘Responsibility for the Future: Limits of the Possible, or Limitless Possibilities?’ The forum brought together 120 experts from 40 countries, including representatives of China, the United States, India, Brazil, the United Kingdom, Germany, Egypt, Iran, and Japan.
October 7, 2026
‘Our Team Consists of True Leaders in Their Respective Academic Disciplines
The HSE International Centre of Decision Choice and Analysis studies a wide range of methods for analysing decision-making and possible scenarios for the development of natural, socio-economic, and political phenomena using various mathematical models. The application of advanced mathematical methods to forecasting helps to prevent negative outcomes and avoid erroneous decisions. The HSE News Service spoke to the centre’s director, Prof. Fuad Aleskerov, about its work.
October 6, 2026
International N5 Symposium ‘Neural Networks and Nonlinearity in Nizhny Novgorod Brings Together Scientists from Russia and Serbia
The International N5 Symposium ‘Neural Networks and Nonlinearity in Nizhny Novgorod’ was held at the Nizhny Novgorod House of Scientists from September 23 to 26. The event was organised by HSE University–Nizhny Novgorod and the Nizhny Novgorod House of Scientists, with the participation of Sberbank and the Institute of Physics Belgrade. The symposium was held for the second time: the first conference took place in 2025 and attracted considerable interest from the academic community.

 

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Composite Anion Exchange Membranes Based on Quaternary Ammonium-Functionalized Polystyrene and Cerium(IV) Phosphate with Improved Monovalent-Ion Selectivity and Antifouling Properties

Membranes. 2023. Vol. 13. No. 7. Article 624.
Manin A., Golubenko D., Novikova S., Andrey Yaroslavtsev

The possibility of targeted change of the properties of ion exchange membranes by incorporation
of various nanoparticles into the membranes is attracting the attention of many research
groups. Here we studied for the first time the influence of cerium phosphate nanoparticles on
the physicochemical and transport properties of commercial anion exchange membranes based
on quaternary ammonium-functionalized polystyrenes, such as heterogeneous Ralex® AM and
pseudo-homogeneous Neosepta® AMX. The incorporation of cerium phosphate on one side of the
membrane was performed by precipitation from absorbed cerium ammonium nitrate (CAN) anionic
complex with ammonium dihydrogen phosphate or phosphoric acid. The structures of the obtained
hybrid membranes and separately synthesized cerium phosphate were investigated using FTIR,
P31 MAS NMR, EDX mapping, and scanning electron microscopy. The modification increased the
membrane selectivity to monovalent ions in the ED desalination of an equimolar mixture of NaCl
and Na2SO4. The highest selectivities of Ralex® AM and Neosepta® AMX-based hybrid membranes
were 4.9 and 7.7, respectively. In addition, the modification of Neosepta® membranes also increased
the resistance to a typical anionic surfactant, sodium dodecylbenzenesulfonate.

Research target: Chemistry Nanotechnologies Materials Technologies
Language: English
DOI
Text on another site
Keywords: selectivityIon exchange membranescerium phosphateelectrodialysis desalinationantifouling properties
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