Ten Years Without Nikola Kallay

A special issue of Colloids and Interfaces (ISSN 2504-5377).

Deadline for manuscript submissions: closed (20 June 2025) | Viewed by 704

Special Issue Editors


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Guest Editor
Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
Interests: surface complexation; adsorption from aqueous solution; environmental chemistry; geochemistry; aquatic chemistry; colloid and interface science

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Guest Editor
Department of Chemistry, Division of Physical Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
Interests: colloid and interfacial chemistry; electrical interfacial layer; adsorption; thermochemistry

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Guest Editor
Department of Chemistry, Division of Physical Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
Interests: physical chemistry of macromolecules; polyelectrolyte multilayers; polyelectrolyte complexes; colloid and interfacial chemistry; adsorption

Special Issue Information

Dear Colleagues,

In 2015, Nikola Kallay unexpectedly passed away at the age of 72. He had retired from the official positions he held at the University of Zagreb, Faculty of Science, in Croatia’s capital and was looking forward to diving into laboratory endeavors with this newfound freedom.

Prof. Kallay had an interesting practical course, where he allowed interested students to work on somewhat risky topics. The tasks required the students to dig into some hotly debated scientific issues or do try something completely new, for example. The outcomes of these practical courses often lead to new research lines in the years to follow.

The present Special Issue is intended to give friends and collaborators the platform to remind the scientific community of their relationship to Niki and to share some unconventional or unexpected results just in the spirit of Niki’s scientific view.

Dr. Johannes Lützenkirchen
Prof. Dr. Tajana Begović
Prof. Dr. Davor Kovačević
Guest Editors

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Keywords

  • interfaces
  • surface potential
  • zeta-potential
  • adsorption
  • aggregation
  • thermodynamics

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Published Papers (1 paper)

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Research

32 pages, 3594 KiB  
Article
Interaction of SBA-15 with Dilute Acetic Acid and Ammonia
by Marta Kalbarczyk, Sebastian Skupiński, Daniel Kamiński and Marek Kosmulski
Colloids Interfaces 2025, 9(3), 39; https://doi.org/10.3390/colloids9030039 - 15 Jun 2025
Viewed by 256
Abstract
The SAXS pattern and pore volume of SBA-15 are not affected by aging SBA-15 with water, dilute acetic acid, and ammonia up for to 1 month, while the specific surface area is substantially depressed in interactions with basic solutions. The SEM images indicate [...] Read more.
The SAXS pattern and pore volume of SBA-15 are not affected by aging SBA-15 with water, dilute acetic acid, and ammonia up for to 1 month, while the specific surface area is substantially depressed in interactions with basic solutions. The SEM images indicate pits on the side surfaces of SBA-15 particles in interactions with basic solutions. Aging of SBA-15 in ammonia solutions results in cavities formed by the collapse of walls between neighboring hexagonal channels in the SBA-15. This phenomenon is discussed with a special emphasis on its possible effect on the potentiometric titration curves. Especially, a standard procedure, in which the SSA measured before the titration is used to calculate the σ0, is compared with a modified procedure, in which the SSAs measured before and after the titration are used to estimate the SSA for each data point separately. Full article
(This article belongs to the Special Issue Ten Years Without Nikola Kallay)
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