Lilla Nanai

@avk.uni-miskolc.hu

Institute of Metallurgy, Metal Forming and Nanotechnology
University of Miskolc, Faculty of Materials and Chemical Engineering

Lilla Nanai


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https://researchid.co/lillananai

EDUCATION

University of Szeged, Chemistry BSc (2014-2017)
University of Szeged, Chemistry MSc (2017-2020)
University of Miskolc, Materials Science and Technology Ph.D. (2020-2024)

RESEARCH, TEACHING, or OTHER INTERESTS

Materials Science, General Chemistry, Materials Chemistry, Catalysis
12

Scopus Publications

107

Scholar Citations

6

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Nickel–iron–cobalt (hydr)oxide-decorated carbon nanotube forest for the oxygen-evolution reaction
    Mahdieh Maleki, Lilla Nánai, Sergey K. Zharmukhamedov, Robabeh Bagheri, Nader Akbari, Elena V. Zadneprovskaya, Roman A. Voloshin, Klara Hernadi, Suleyman I. Allakhverdiev, Mohammad Mahdi Najafpour
    Dalton Transactions, 2026
    An oxygen-evolution reaction electrocatalyst was reported by first growing a vertically aligned carbon nanotube forest, and a NiFeCo (hydr)oxide coating onto the CNT forest.
  • A novel Bi2WO6/MWCNTs-decorated PES photocatalytic membrane for efficient dye removal
    Maryam Y. Ghadhban, Mohammed Ahmed Shehab, Ali A. Abdulabbas, Khalid T. Rashid, Adnan A. Abdulrazak, Lilla Nánai, István Kocserha
    Journal of Membrane Science, 2026
  • The Effect of Hydrogen Gas and Water Vapor in Catalytic Chemical Vapor Deposition on the Structure of Vertically Aligned Carbon Nanotubes
    Lilla Nánai, Tamás Gyulavári, Zsejke-Réka Tóth, Zsuzsanna Pápa, Judit Budai, Daniel Koncz-Horvath, Klara Hernadi
    Materials, 2025
    Since the discovery of carbon nanotubes (CNTs), extensive and comprehensive research has been conducted in many areas of materials science. Due to their structural and chemical properties, they can be an important part of electronic devices and structural materials that surround us. In this work, we focused on the preparation and basic analysis of vertically aligned CNTs. An aluminum oxide carrier layer and bimetallic iron–cobalt catalyst layers of different compositions were fabricated on the surface of a silicon substrate using a pulsed laser deposition method. Then, vertically aligned CNTs were grown using a catalytic chemical vapor deposition method based on the thermal decomposition of ethylene. During the experiments, the effect of water vapor and hydrogen gas was investigated on the structure of as-prepared carbon nanotubes. CNT forest samples were characterized by scanning electron microscopy and Raman spectroscopy. One of the most important findings of this research is that the presence of hydrogen gas in the CCVD system is essential, but high-quality vertically aligned CNTs can be produced on silicon substrates even without water vapor.
  • Carbon-Based Electrodes for Supercapacitors, with a Focus on Carbon Nanotubes—A Brief Overview
    Lilla Nánai, Klara Hernadi
    Materials, 2025
    Increased needs arising from efficient utilization of renewable energy sources and the emerging use of portable electronic devices have introduced new requirements and challenges, such as fast charging and discharging, high-speed energy delivery, longer lifetime, and recyclability. To meet these demands, the innovative use of supercapacitors is essential, as they can complement the batteries currently in use. One of the major disadvantages of supercapacitors is that their energy storage capacity (5–20 Wh/kg) is currently insufficient, compared to the capacity of batteries (~1000 Wh/kg). Supercapacitors have higher specific power (10 kW/kg) but lower specific energy density, which is another significant disadvantage compared to batteries. This has prompted researchers around the world to find innovative solutions to enhance the energy density of these materials. Carbon-based nanomaterials are one of the most widely used electrode materials for supercapacitors; therefore, the development of carbon-based nanomaterials plays crucial role in evolution of supercapacitors, due to their high electrical conductivity, large specific surface area, and excellent mechanical strength compared to conventional electrode materials graphite, copper, platinum, etc. Significant results have been reported in the scientific literature on novel carbon-based nanostructured materials such as carbon nanotubes, vertically aligned carbon nanotubes, graphene, activated carbon, or carbon nanoballs, which have a hierarchical pore structure, as well as hybrid systems combining these materials and the introduction of alternative electrolytes. This manuscript reviews briefly the background and fundamental characteristics of supercapacitors, classifying them. It also mentions the general electrochemical measurement methods used to evaluate the energy storage properties of supercapacitors, with emphasis on their specific characteristics and limitations. The integral components of supercapacitors, especially electrode materials, are considered to have considerable impact on the performance of supercapacitor devices (e.g., long life cycle, storage capacity, and high power density).
  • Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate
    Lilla Nánai, Zoltán Németh, George Kaptay, Klara Hernadi
    Scientific Reports, 2024
    An efficient and reproducible growth of vertically aligned carbon nanotubes by CCVD requires accurate and specific setting of the synthesis parameters and the properties of catalyst thin layers. In this work, the growth of vertically aligned carbon nanotubes onto AZO (= aluminum doped zinc oxide) glass substrate covered by Al2O3 and Fe-Co catalyst layer system is presented. Investigation of the effect of catalyst composition and synthesis temperature on CVD growth revealed the optimum condition of the synthesis. The analysis of as-prepared samples by SEM, TEM and Raman spectroscopy was carried out to prove the structure and quality of carbon deposit. Theoretical considerations have supported speculative ideas about the role of the support layer, the transformation of the catalyst layer in the presence of hydrogen gas and the growth mechanism of carbon nanotubes. The mechanism of CNT growth is modelled and the order of magnitude of experimentally observed vertical linear growth rate of CNT (several nm/s) is reproduced.
  • Effects of CCVD parameters on the growth of VACNT over AZO substrate
    Lilla Nánai, Máté Czagány, Klara Hernadi
    Ceramics International, 2024
    Both, aluminum doped zinc oxide (AZO) and vertically aligned carbon nanotubes (VACNT) have outstanding properties and promising applications in the future, however, there is little information in the scientific literature on whether this is feasible. In this study, we investigated the effects of catalyst layer deposition parameters and the synthesis parameters by using a simple and cost-effective dip coating method to form alumina support layer and iron and cobalt bimetal catalyst layer on the AZO surface thereafter performing synthesis via catalytic chemical vapor deposition technique at 650 °C. In order to gain useful information about the structure of the VACNTs, several parameters were varied during both catalyst layer preparation (e.g. catalyst ink concentration) and CCVD synthesis (e.g. water vapor gas feed, the presence of hydrogen gas). The resulting samples were investigated by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The results indicated that the length and structure of CNTs were strongly affected by the catalyst ink concentration and water vapor.
  • Development and Investigation of Photoactive WO3 Nanowire-Based Hybrid Membranes
    Mohammed Ahmed Shehab, Nikita Sharma, Gábor Karacs, Lilla Nánai, István Kocserha, Klara Hernadi, Zoltán Németh
    Catalysts, 2022
    Novel hybrid structures have attracted attention in several instances of scientific research and different technological applications in this decade due to their novel characteristics and wide range of applicability. Hybrid membranes with multiple components (three or more) are also increasingly used in water purification applications, and their ease of handling and reusability make them a promising candidate for the degradation of organic pollutants by photocatalysis. In this study, the preparation and characterization of tungsten trioxide nanowire (WO3 NW)-based hybrid membrane structures are reported. Furthermore, the adsorption properties and photocatalytic efficiency of the as-prepared membranes against methylene blue (MB) organic dye under UV irradiation is also presented. Characterization techniques, such as scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray powder diffraction (XRD) are performed to study the morphology and surface of the as-prepared hybrid membranes. The removal efficiency of the hybrid membranes against MB is 77% in a 120 min decomposition reaction. The enhanced value can be attributed to the hybrid structure of the membrane that enhances not only the adsorption capability, but also the photocatalytic performance. Based on the results obtained, it is hoped that hybrid membrane technology could be a promising candidate for future photocatalysis-based water treatment applications.
  • Preparation and Photocatalytic Performance of TiO2 Nanowire-Based Self-Supported Hybrid Membranes
    Mohammed Ahmed Shehab, Nikita Sharma, Andrea Valsesia, Gábor Karacs, Ferenc Kristály, Tamás Koós, Anett Katalin Leskó, Lilla Nánai, Klara Hernadi, Zoltán Németh
    Molecules, 2022
    Nowadays, the use of hybrid structures and multi-component materials is gaining ground in the fields of environmental protection, water treatment and removal of organic pollutants. This study describes promising, cheap and photoactive self-supported hybrid membranes as a possible solution for wastewater treatment applications. In the course of this research work, the photocatalytic performance of titania nanowire (TiO2 NW)-based hybrid membranes in the adsorption and degradation of methylene blue (MB) under UV irradiation was investigated. Characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffractometry (XRD) were used to study the morphology and surface of the as-prepared hybrid membranes. We tested the photocatalytic efficiency of the as-prepared membranes in decomposing methylene blue (MB) under UV light irradiation. The hybrid membranes achieved the removal of MB with a degradation efficiency of 90% in 60 min. The high efficiency can be attributed to the presence of binary components in the membrane that enhanced both the adsorption capability and the photocatalytic ability of the membranes. The results obtained suggest that multicomponent hybrid membranes could be promising candidates for future photocatalysis-based water treatment technologies that also take into account the principles of circular economy.
  • Simplification of the CCVD method used in the growth of carbon nanotube forests on titanium substrate
    Anna Szabó, Lilla Nánai, Zsejke Réka Tóth, Klara Hernadi
    Solid State Sciences, 2021
    The carbon nanotubes (CNTs) play an important role in nanotechnology research today as they have the potential to be used in several areas. Environmental protection is highly discussed nowadays, which is why it is necessary to be able to produce CNT forests with less energy investment and simply, for these reasons we used the dip-coating layer construction method, which is a simple process. We also would like to simplify the production of CNT forests by changing several parameters used in the syntheses (concentration of ink, catalyst ratios, temperature, the effect of heat-treatment, hydrogen, and water vapor, reaction time, carbon source). For these reasons, this research uses a dip-coating method to form a catalyst layer on the surface of the substrate, as well as to investigate various parameters to produce CNT forests directly on the titanium substrate, as it is important today to use a conductive substrate.
  • Widespread applicability of bacterial cellulose-ZnO-MWCNT hybrid membranes
    Bilal El Mrabate, Emma Szőri-Dorogházi, Mohammed Ahmed Shehab, Tanya Chauhan, Gábor Muránszky, Emőke Sikora, Ádám Filep, Nikita Sharma, Lilla Nánai, Klara Hernadi, Zoltán Németh
    Arabian Journal of Chemistry, 2021
    The novel photoactive membranes have grabbed the attention in the field of environmental protection by employing wastewater treatments and the removal of microorganisms or organic pollutants from wastewater. Here we present a promising self-supported photoactive hybrid membrane for future antimicrobial and water treatment applications. In this study, the efficiency of bacterial cellulose (BC) - zinc oxide (ZnO) - multi walled carbon nanotube (MWCNT) hybrid membranes in the adsorption and photocatalytic degradation of methylene blue (MB) under UV radiation and the removal of Escherichia coli (E. coli) was investigated. It was found that the photocatalytic efficiency is strongly dependent on both the preparation method and the amount of ZnO-MWCNT additives loaded into the hybrid membranes. The characterization of BC-ZnO-MWCNT membranes was done using scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), and X-ray micro computed tomography (μCT) to study the morphological and porosity aspect of the prepared-membranes. The promising results of this study could provide a new pathway in the field of photocatalysed-based water treatment technology by the application of hybrid membranes.
  • Manual spray coating: A cheap and effective method to build catalyst layers for carbon nanotube forest growth
    Lilla Nánai, Anna Szabó, Tamás Gyulavári, Judit Budai, Klara Hernadi
    Thin Solid Films, 2019
  • A Simple and Scalable Method for the Preparation of Magnetite/Graphene Oxide Nanocomposites under Mild Conditions
    Tamás Szabó, Lilla Nánai, Dániel Nesztor, Balázs Barna, Ondřej Malina, Etelka Tombácz
    Advances in Materials Science and Engineering, 2018

RECENT SCHOLAR PUBLICATIONS

  • Nickel–iron–cobalt (hydr) oxide-decorated carbon nanotube forest for the oxygen-evolution reaction
    M Maleki, L Nánai, SK Zharmukhamedov, R Bagheri, N Akbari, ...
    Dalton Transactions 55 (14), 5805-5819 , 2026
    2026.0
  • A Novel Bi2WO6/MWCNTs-Decorated PES Photocatalytic Membrane for Efficient Dye Removal
    MY Ghadhban, MA Shehab, AA Abdulabbas, KT Rashid, AA Abdulrazak, ...
    Journal of Membrane Science, 125100 , 2025
    2025.0
    Citations: 6
  • The Effect of Hydrogen Gas and Water Vapor in Catalytic Chemical Vapor Deposition on the Structure of Vertically Aligned Carbon Nanotubes
    L Nánai, T Gyulavári, ZR Tóth, Z Pápa, J Budai, D Koncz-Horvath, ...
    Materials 18 (23), 5309 , 2025
    2025.0
    Citations: 1
  • Carbon-Based Electrodes for Supercapacitors, with a Focus on Carbon Nanotubes—A Brief Overview
    L Nánai, K Hernadi
    Materials 18 (22), 5215 , 2025
    2025.0
    Citations: 4
  • Függőlegesen rendezett szén nanocsövek CCVD szintézise: A katalizátor réteg kialakítása során alkalmazott paraméterek szerkezetre gyakorolt hatása
    L Nánai
    Miskolci Egyetem , 2025
    2025.0
  • Effects of CCVD parameters on the growth of VACNT over AZO substrate
    L Nanai, M Czagany, K Hernadi
    Ceramics International 50 (11), 20749-20757 , 2024
    2024.0
    Citations: 2
  • Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate
    L Nánai, Z Németh, G Kaptay, K Hernadi
    Scientific Reports 14 (1), 7307 , 2024
    2024.0
    Citations: 17
  • PREDICTION OF THE ANTIOXIDANT CHARACTER BY USING PHOTOCATALYTIC ACTIVITY OF DIFFERENTLY SHAPED CERIUM-OXIDE NANOPARTICLES.
    ZR TÓTH, K MAGYARI, A FERARU, IA SZEKELY, L NÁNAI, A DREANCA, ...
    Studia Universitatis Babes-Bolyai, Physica 68 , 2023
    2023.0
  • Development and Investigation of Photoactive WO 3 Nanowire-Based Hybrid Membranes
    MA Shehab, N Sharma, G Karacs, L Nánai, I Kocserha, K Hernadi, ...
    Catalysts 12 (9), 1029 , 2022
    2022.0
    Citations: 6
  • Preparation and Photocatalytic Performance of TiO 2 Nanowire-Based Self-Supported Hybrid Membranes
    MA Shehab, N Sharma, A Valsesia, G Karacs, F Kristály, T Koós, ...
    Molecules 27 (9), 2951 , 2022
    2022.0
    Citations: 21
  • Development and Investigation of Photoactive WO3 Nanowire-Based Hybrid Membranes. Catalysts 2022, 12, 1029
    MA Shehab, N Sharma, G Karacs, L Nánai, I Kocserha, K Hernadi, ...
    s Note: MDPI stays neutral with regard to jurisdictional claims in published … , 2022
    2022.0
  • Widespread applicability of bacterial cellulose-ZnO-MWCNT hybrid membranes
    B El Mrabate, E Szőri-Dorogházi, MA Shehab, T Chauhan, G Muranszky, ...
    Arabian Journal of Chemistry 14 (7), 103232 , 2021
    2021.0
    Citations: 17
  • Simplification of the CCVD method used in the growth of carbon nanotube forests on titanium substrate
    A Szabó, L Nánai, ZR Tóth, K Hernadi
    Solid State Sciences 117, 106648 , 2021
    2021.0
    Citations: 11
  • Manual spray coating: A cheap and effective method to build catalyst layers for carbon nanotube forest growth
    L Nánai, A Szabó, T Gyulavári, J Budai, K Hernadi
    Thin Solid Films 689, 137491 , 2019
    2019.0
    Citations: 10
  • A simple and scalable method for the preparation of magnetite/graphene oxide nanocomposites under mild conditions
    T Szabó, L Nánai, D Nesztor, B Barna, O Malina, E Tombácz
    Advances in Materials Science and Engineering 2018 (1), 1390651 , 2018
    2018.0
    Citations: 12
  • EXPERIMENTAL AND THEORETICAL ASPECTS OF CCVD SYNTHESIS OF VERTICALLY ALIGNED CARBON NANOTUBES ON AZO SUBSTRATE
    L Nánai, G Kaptay, K Hernádi
  • DEPOSITION TECHNIQUES OF HIGH ENTROPY ALLOY CATALYST THIN FILM FOR CARBON NANOTUBE FORESTS GROWTH BY CCVD
    BJ Majondo, L Nánai, E Baradács, Z Erdélyi, K Hernádi
  • A SIMPLE METHOD TO BUILD CATALYST LAYERS FOR THE SYNTHESIS OF VERTICALLY ALIGNED CARBON NANOTUBES
    L Nánai, A Szabó, T Gyulavári, ZR Tóth, K Hernádi
  • Függőlegesen rendezett szén nanocsövek katalitikus kémiai gőzfázisú leválasztással történő szintézisét befolyásoló paraméterek szerkezetre gyakorolt hatásának áttekintése
    L Nánai, K Hernadi
    Doktorandusz Almanach PhD Students Almanach, 250 , 0
  • CHALLANGES OF VERTICALLY ALIGNED CARBON NANOTUBES PRODUCTION AND APPLICATION
    L Nánai, K Hernádi

MOST CITED SCHOLAR PUBLICATIONS

  • Preparation and Photocatalytic Performance of TiO 2 Nanowire-Based Self-Supported Hybrid Membranes
    MA Shehab, N Sharma, A Valsesia, G Karacs, F Kristály, T Koós, ...
    Molecules 27 (9), 2951 , 2022
    2022.0
    Citations: 21
  • Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate
    L Nánai, Z Németh, G Kaptay, K Hernadi
    Scientific Reports 14 (1), 7307 , 2024
    2024.0
    Citations: 17
  • Widespread applicability of bacterial cellulose-ZnO-MWCNT hybrid membranes
    B El Mrabate, E Szőri-Dorogházi, MA Shehab, T Chauhan, G Muranszky, ...
    Arabian Journal of Chemistry 14 (7), 103232 , 2021
    2021.0
    Citations: 17
  • A simple and scalable method for the preparation of magnetite/graphene oxide nanocomposites under mild conditions
    T Szabó, L Nánai, D Nesztor, B Barna, O Malina, E Tombácz
    Advances in Materials Science and Engineering 2018 (1), 1390651 , 2018
    2018.0
    Citations: 12
  • Simplification of the CCVD method used in the growth of carbon nanotube forests on titanium substrate
    A Szabó, L Nánai, ZR Tóth, K Hernadi
    Solid State Sciences 117, 106648 , 2021
    2021.0
    Citations: 11
  • Manual spray coating: A cheap and effective method to build catalyst layers for carbon nanotube forest growth
    L Nánai, A Szabó, T Gyulavári, J Budai, K Hernadi
    Thin Solid Films 689, 137491 , 2019
    2019.0
    Citations: 10
  • A Novel Bi2WO6/MWCNTs-Decorated PES Photocatalytic Membrane for Efficient Dye Removal
    MY Ghadhban, MA Shehab, AA Abdulabbas, KT Rashid, AA Abdulrazak, ...
    Journal of Membrane Science, 125100 , 2025
    2025.0
    Citations: 6
  • Development and Investigation of Photoactive WO 3 Nanowire-Based Hybrid Membranes
    MA Shehab, N Sharma, G Karacs, L Nánai, I Kocserha, K Hernadi, ...
    Catalysts 12 (9), 1029 , 2022
    2022.0
    Citations: 6
  • Carbon-Based Electrodes for Supercapacitors, with a Focus on Carbon Nanotubes—A Brief Overview
    L Nánai, K Hernadi
    Materials 18 (22), 5215 , 2025
    2025.0
    Citations: 4
  • Effects of CCVD parameters on the growth of VACNT over AZO substrate
    L Nanai, M Czagany, K Hernadi
    Ceramics International 50 (11), 20749-20757 , 2024
    2024.0
    Citations: 2
  • The Effect of Hydrogen Gas and Water Vapor in Catalytic Chemical Vapor Deposition on the Structure of Vertically Aligned Carbon Nanotubes
    L Nánai, T Gyulavári, ZR Tóth, Z Pápa, J Budai, D Koncz-Horvath, ...
    Materials 18 (23), 5309 , 2025
    2025.0
    Citations: 1
  • Nickel–iron–cobalt (hydr) oxide-decorated carbon nanotube forest for the oxygen-evolution reaction
    M Maleki, L Nánai, SK Zharmukhamedov, R Bagheri, N Akbari, ...
    Dalton Transactions 55 (14), 5805-5819 , 2026
    2026.0
  • Függőlegesen rendezett szén nanocsövek CCVD szintézise: A katalizátor réteg kialakítása során alkalmazott paraméterek szerkezetre gyakorolt hatása
    L Nánai
    Miskolci Egyetem , 2025
    2025.0
  • PREDICTION OF THE ANTIOXIDANT CHARACTER BY USING PHOTOCATALYTIC ACTIVITY OF DIFFERENTLY SHAPED CERIUM-OXIDE NANOPARTICLES.
    ZR TÓTH, K MAGYARI, A FERARU, IA SZEKELY, L NÁNAI, A DREANCA, ...
    Studia Universitatis Babes-Bolyai, Physica 68 , 2023
    2023.0
  • Development and Investigation of Photoactive WO3 Nanowire-Based Hybrid Membranes. Catalysts 2022, 12, 1029
    MA Shehab, N Sharma, G Karacs, L Nánai, I Kocserha, K Hernadi, ...
    s Note: MDPI stays neutral with regard to jurisdictional claims in published … , 2022
    2022.0
  • EXPERIMENTAL AND THEORETICAL ASPECTS OF CCVD SYNTHESIS OF VERTICALLY ALIGNED CARBON NANOTUBES ON AZO SUBSTRATE
    L Nánai, G Kaptay, K Hernádi
  • DEPOSITION TECHNIQUES OF HIGH ENTROPY ALLOY CATALYST THIN FILM FOR CARBON NANOTUBE FORESTS GROWTH BY CCVD
    BJ Majondo, L Nánai, E Baradács, Z Erdélyi, K Hernádi
  • A SIMPLE METHOD TO BUILD CATALYST LAYERS FOR THE SYNTHESIS OF VERTICALLY ALIGNED CARBON NANOTUBES
    L Nánai, A Szabó, T Gyulavári, ZR Tóth, K Hernádi
  • Függőlegesen rendezett szén nanocsövek katalitikus kémiai gőzfázisú leválasztással történő szintézisét befolyásoló paraméterek szerkezetre gyakorolt hatásának áttekintése
    L Nánai, K Hernadi
    Doktorandusz Almanach PhD Students Almanach, 250 , 0
  • CHALLANGES OF VERTICALLY ALIGNED CARBON NANOTUBES PRODUCTION AND APPLICATION
    L Nánai, K Hernádi