István Tolnai
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View article: Structural characterization of uranium and lanthanide loaded borosilicate glass matrix
Structural characterization of uranium and lanthanide loaded borosilicate glass matrix Open
Borosilicate glass is a potential candidate for high-level radioactive waste conditioning, thus understanding the effects caused by the combined presence of uranium and actinides within these matrices is of great importance. The glass matr…
View article: Adsorption of Transition Metal Cations on B75 Bentonite and Behavior of the Glass/Copper/Bentonite Barrier System under Simulated Repository Conditions
Adsorption of Transition Metal Cations on B75 Bentonite and Behavior of the Glass/Copper/Bentonite Barrier System under Simulated Repository Conditions Open
Since plans for a future deep geological repository (DGR) site have been published in Hungary, further study of their material characteristics has become essential to understand how to operate and design them properly fully. The main goal …
View article: Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environmental Applications
Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environmental Applications Open
Mesoporous silica sieves have been prepared through sol–gel synthesis using diester gemini surfactants as pore templates, aiming to obtain new materials with potential use for water remediation. A series of mesoporous spherical silica part…
View article: Optimized cement blend for the immobilization of simulated borate radioactive liquid waste
Optimized cement blend for the immobilization of simulated borate radioactive liquid waste Open
Nuclear power plants use boric acid with different 10 B enrichment levels (from natural ratio to 90% 10 B) as neutron absorber and at the end this constitutes a high-volume liquid waste. In this study, we aimed to find the optimal ratio of…
View article: Neutron, X-ray diffraction, DSC, Raman, Mössbauer and leaching studies of iron phosphate glasses and crystalline phases
Neutron, X-ray diffraction, DSC, Raman, Mössbauer and leaching studies of iron phosphate glasses and crystalline phases Open
x Fe 2 O 3 –(100 − x )P 2 O 5 glasses were synthesized by melt quenching and structure–property correlation studies were carried.
View article: Investigation of Calcium Phosphate-Based Biopolymer Composite Scaffolds for Bone Tissue Engineering
Investigation of Calcium Phosphate-Based Biopolymer Composite Scaffolds for Bone Tissue Engineering Open
We present a novel method for preparing bioactive and biomineralized calcium phosphate (mCP)-loaded biopolymer composite scaffolds with a porous structure. Two types of polymers were investigated as matrices: one natural, cellulose acetate…
View article: Innovative Bioactive and Biodegradable Calcium Phosphate-Based Biopolymer Composite Scaffolds
Innovative Bioactive and Biodegradable Calcium Phosphate-Based Biopolymer Composite Scaffolds Open
We present a novel solution to prepare bioactive, biomineralized calcium phosphate (mCP) loaded biopolymer composites scaffold material with porous structure. We investigated two types of polymers as matrices, one natural, such as cellulos…
View article: Effects of UO3 on the structure, thermal and chemical stability of borosilicate glass matrix
Effects of UO3 on the structure, thermal and chemical stability of borosilicate glass matrix Open
The glass matrix of composition: 55SiO2–10B2O3–25Na2O-5BaO-5ZrO2 was incorporated with 10 to 40 wt% of UO3 by melt quenching technique. Neutron diffraction and Reverse Monte Carlo simulations revealed that the borosilicate network consists…
View article: Physical and chemical effects of natural zeolites additives on the cementitious stabilization of cesium and barium isotopes in boric acid liquid waste  
Physical and chemical effects of natural zeolites additives on the cementitious stabilization of cesium and barium isotopes in boric acid liquid waste   Open
Boric acid is used in pressurized water reactor (PWR) systems as an efficient neutron absorber for activity control which aids in the maintenance of steady state operating temperature control. The boric acid liquid waste produced from the …
View article: Structural Control Enables Catalytic and Electrocatalytic Activity of Porous Tetrametallic Nanorods
Structural Control Enables Catalytic and Electrocatalytic Activity of Porous Tetrametallic Nanorods Open
Integrating more than one type of metal into a nanoparticle that has a well‐defined morphology and composition expands the functionalities of nanocatalysts. For a metal core/porous multimetallic shell nanoparticle, the availability of cata…
View article: Glass/steel/clay interactions in a simulated radioactive waste geological disposal system
Glass/steel/clay interactions in a simulated radioactive waste geological disposal system Open
Deep geological storage is the accepted solution for the final disposal of high-level radioactive waste therefore, it is necessary to study the host rock of the planned Hungarian waste repository and the materials involved in the engineere…
View article: Interactions between C-steel and blended cement in concrete under radwaste repository conditions at 80 °C
Interactions between C-steel and blended cement in concrete under radwaste repository conditions at 80 °C Open
View article: Interactions between C-steel and blended-cement in concrete under radwaste repository conditions at 80 °C
Interactions between C-steel and blended-cement in concrete under radwaste repository conditions at 80 °C Open
Deep geological repository is widely considered as the preferred solution for the final disposal of high-level radioactive waste. Investigation representative of the Hungarian disposal concept was conducted using mock-up diffusion cells to…
View article: The geochemical role of B-10 enriched boric acid in cemented liquid radioactive wastes
The geochemical role of B-10 enriched boric acid in cemented liquid radioactive wastes Open
Boric acid is a significant radioactive waste generated during the operation of nuclear power plants. Cementitious materials have been widely studied for the immobilization of boric acid. The generally used natural boric acid has been repl…
View article: Biomimetic mineralized amorphous carbonated calcium phosphate-polycaprolactone bioadhesive composites as potential coatings on implant materials
Biomimetic mineralized amorphous carbonated calcium phosphate-polycaprolactone bioadhesive composites as potential coatings on implant materials Open
Biomimetic mineralized (Mg, Zn, Sr) carbonated amorphous calcium phosphate (cACP) containing biodegradable polycaprolactone (PCL) coating was prepared via spin coating technology. The main role of PCL was to provide a controlled release of…
View article: Characterization of Simulated Liquid Radioactive Waste in a New Type of Cement Mixture
Characterization of Simulated Liquid Radioactive Waste in a New Type of Cement Mixture Open
There is still a safety challenge for the long-term stabilization of nuclear waste. Due to its affordable price and easy manufacturing, cement is one of the most promising materials to immobilize a large volume of low- and intermediate-lev…
View article: The effects of CaO/SrO substitution in bioactive glasses: a combined structural and bioactivity study
The effects of CaO/SrO substitution in bioactive glasses: a combined structural and bioactivity study Open
View article: Short-Range Structure and Thermal Properties of Iron Phosphate Glasses
Short-Range Structure and Thermal Properties of Iron Phosphate Glasses Open
View article: Local structure and dynamics of tungsten oxide-based glasses: insights from concurrent neutron diffraction and Compton scattering
Local structure and dynamics of tungsten oxide-based glasses: insights from concurrent neutron diffraction and Compton scattering Open
In this work, following our previous work on molybdate glasses, we employ a combination of neutron diffraction and neutron Compton scattering, augmented by ab initio harmonic lattice dynamics and Reverse Monte Carlo modelling to characteri…
View article: Lanthanide (Ce, Nd, Eu) environments and leaching behavior in borosilicate glasses
Lanthanide (Ce, Nd, Eu) environments and leaching behavior in borosilicate glasses Open
View article: Boron and cesium leachability from cementitious waste forms containing B-10 enriched boric acid
Boron and cesium leachability from cementitious waste forms containing B-10 enriched boric acid Open
View article: Structure of oxy-halide compositions for solid-state batteries
Structure of oxy-halide compositions for solid-state batteries Open
Discovering new chemistry and materials to enable rechargeable batteries with higher capacity and energy density is our priorities.The novel inorganic and thermally stable oxides are potential substitutes for the toxic and flammable organi…