Article
Chemistry, Physical
Wangbing Sun, Mingxuan Sun, Xianglong Meng, Yongqiang Zheng, Ziyang Li, Xiangzhi Huang, Muhammad Humayun
Summary: A series of alkynyl carbon functionalized N-TiO2 was successfully prepared by ball milling. The alkynyl carbon materials were successfully doped into N-TiO2, and the catalytic performance of alkynylated N-TiO2 for various organic dyes and NH3 production was significantly enhanced under visible light. The introduction of alkynyl carbon into semiconductor materials is a promising strategy for improving their photocatalytic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Kabuyaya Kighuta, Anantha-Iyengar Gopalan, Dong-Eun Lee, Gopalan Saianand, Yao-Long Hou, Sung-Sik Park, Kwang-Pill Lee, Jun-Cheol Lee, Wha-Jung Kim
Summary: This study focused on the design and optimization of TiO2-ZnO composite using response surface methodology, with evaluation of photocatalytic NOx removal efficiency. Experimental results validated the RSM predictions, showing different efficiencies for NOx removal based on calcination temperature and ZnO weight percent. The best photocatalytic performance was observed in the composite with 2.1 wt % of ZnO calcined at 558°C.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Food Science & Technology
Touseef Ahmed Wani, F. A. Masoodi, Rehana Akhter
Summary: In this study, chitosan flakes were modified into chitosan nanopowder through planetary ball milling, and the properties of resulting gels were analyzed. The chitosan nanopowder gels exhibited higher color difference, better thermal stability, and matrix properties compared to chitosan flakes gels.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Qianru Zhao, Sinan Liu, Shuangyang Chen, Binghua Ren, Yongchao Zhang, Xi Luo, Yan Sun
Summary: A novel Z-scheme WO3/g-C3N4 heterojunction was prepared using a hydrothermal method combined with ball milling. The photocatalytic activity was evaluated by the degradation of Rhodamine B dye. The results showed that the WO3/g-C3N4 composites synthesized by ball milling exhibited the highest degradation efficiency, which could be attributed to the higher specific surface area caused by ball milling and the formation of the Z-scheme heterojunction, promoting the separation and transfer of photogenerated electron-hole pairs.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Ceramics
M. Mousavi, T. Ghorbani-Moghadam, A. Kompany
Summary: The La0.7Sr1.3CoO4 Ruddlesden-Popper oxide exhibited good photocatalytic properties under UV irradiation, showing high degradation efficiency for methyl orange dye. The presence of H2O2 further enhanced the catalytic performance, suggesting promising applications for dye degradation.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yutong Xiao, Ziqun Wang, Longfeng Li, Quan Gu, Man Xu, Li Zhu, Xianliang Fu
Summary: Transition metal phosphides (TMPs) are promising alternatives to expensive cocatalysts. In this study, the structure-activity relationships between Ni2P and g-C3N4 were explored, revealing that Ni2P can substantially enhance the photocatalytic activity of g-C3N4 for hydrogen evolution reaction (HER). Loading 3% Ni2P on g-C3N4 through ball milling resulted in a 9-fold increase in HER performance compared to pristine g-C3N4. Ni2P played a dual role as trapping sites for photoinduced electrons and reactive centers for hydrogen evolution due to its high work function and low HER overpotential. This work provides insights into the design of efficient TMPs for enhanced HER through simple synthesis methods.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Hanane Chakhtouna, Ali Ouhssain, Issam Meftah Kadmiri, Hanane Benzeid, Nadia Zari, Abou el Kacem Qaiss, Rachid Bouhfid
Summary: Biochar materials derived from date palm rachis and silver-doped titanium dioxide nanoparticles were successfully prepared through ball milling. The resulting photocatalysts showed enhanced photocatalytic activity and high antibacterial performance.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Engineering, Environmental
Denis Leybo, Anton S. Konopatsky, Xiaosheng Fang, Dmitry Shtansky
Summary: Due to their high toxicity, even a small amount of phenols entering the surrounding aquatic environment poses a serious danger to all living beings. To address this important problem, commercial micron-sized h-BN powder was ball milled and surface-functionalized, and characterized as a promising photocatalyst.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Wenzhu Liu, Mingxuan Sun, Zhipeng Ding, Qi Zeng, Yongqiang Zheng, Wangbing Sun, Xianglong Meng
Summary: The study demonstrated successful functionalization of g-C3N4 with alkynyl groups via ball milling, resulting in ultrathin wrinkle-like structures with abundant pores. The alkynyl functionalized g-C3N4 showed higher photocatalytic activity for NH3 production and significant enhancements in photodegradation compared to pristine g-C3N4. Various characterization techniques were used to investigate the improved mechanism, and the modification technique has potential for preparing other alkynyl functionalized semiconductors for photocatalytic applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Marta Kowalkinska, Szymon Dudziak, Jakub Karczewski, Jacek Ryl, Grzegorz Trykowski, Anna Zielinska-Jurek
Summary: In this study, TiO2 nanostructures with different morphologies and crystal facets were successfully prepared using TiOF2 as a precursor, demonstrating varying photocatalytic activity and mineralization efficiency. The TiO2 octahedra exposing {101} facets exhibited the highest photoactivity and mineralization efficiency among the obtained nanostructures. Surface effects of the photocatalyst were identified as influencing factors in mineralization efficiency and photodegradation products formation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Anna Stepanova, Teddy Tite, Iryna Ivanenko, Monica Enculescu, Cristian Radu, Daniela Cristina Culita, Arpad Mihai Rostas, Aurelian Catalin Galca
Summary: Photocatalysis using TiO2 has shown promising results in degrading harmful pollutants. This study synthesized TiO2 powders via a hydrothermal method and analyzed its morphology and structure using various analysis techniques. The results demonstrated that TiO2 exhibited excellent photocatalytic performance in degrading dyes, with pH affecting the formation of TiO2 phases.
Article
Chemistry, Applied
Ziqiao Liu, Zhi Zheng, Guobin Zhu, Shuizhong Luo, Danfeng Zhang, Fengru Liu, Yizhong Shen
Summary: The study showed that planetary ball milling can improve the structure and functional properties of wheat gluten, making it have a looser and more disorderly secondary structure, as well as increased surface hydrophobicity and foaming capacity. Additionally, changes in subunit composition and particle size were observed.
Article
Chemistry, Physical
Pham Van Viet, Tran Hoang The Vinh, Nguyen Thi Ngoc Dung, Cao Minh Thi
Summary: A ZnO/TiO2 composite was synthesized through a simple ball-milling process, exhibiting high photocatalytic efficiency in nitric oxide oxidation under sunlight, surpassing pure ZnO nanoparticles by 2.8 times. Notably, the conversion rate of NO2 decreased significantly when ZnO/TiO2 composites were used as photocatalysts for NO gas removal under solar light, with a sustained high performance even after multiple recycles.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Engineering, Chemical
Mahtab Norouzi, Ali Fazeli, Omid Tavakoli
Summary: In this study, phenol degradation using Ag/TiO2 electrospun nanofiber photocatalyst was investigated. The results showed that the optimal promoter condition is 5% Ag content and the optimal calcination temperature is 450 degrees Celsius. The maximum phenol degradation achieved was 82.65% under the specified conditions.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Environmental Sciences
Jingqi Wu, Tongshuai Wang, Yuyan Liu, Wei Tang, Shuyu Geng, Jiawei Chen
Summary: N-doped biochar synthesized by ball-milling method and using urea as precursor showed significantly enhanced adsorption capacity for norfloxacin removal. The adsorption enhancement was attributed to the N-doping and ball-milling method, which increased H-bonds, pi-pi electron donor-acceptor, and pore-filling interactions. The regenerated U-MBC had good adsorption capacity and performed well in multiple cycles.
Article
Materials Science, Coatings & Films
Kristina Mojsilovic, Nenad Tadic, Uros Lacnjevac, Stevan Stojadinovic, Rastko Vasilic
Summary: This study discusses the growth of thin oxide coatings on aluminum substrate in water-based sodium tungstate electrolyte by plasma electrolytic oxidation (PEO) and experimentally illustrates it using a unique ultra-low duty cycle pulsed direct current (DC) power supply. Elements present in micro-discharges during PEO processing are identified using standard optical emission spectroscopy (OES) technique, and the obtained coatings are characterized with respect to their morphology, chemical composition, and phase composition. The coatings are found to be composed of Al, O, and W, with low roughness and porosity, and partial crystallization reveals the presence of WO3, W3O8, and gamma-Al2O3 crystalline phases.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ting Wu, Carsten Blawert, Maria Serdechnova, Polina Karlova, Gleb Dovzhenko, D. C. Florian Wieland, Stevan Stojadinovic, Rastko Vasilic, Kristina Mojsilovic, Mikhail L. Zheludkevich
Summary: The development of PEO surface treatments for Nb enables the production of functional coatings with a combination of new compositions and phases. The coatings mainly consist of Nb2O5, with additional oxides or phosphates present in certain electrolytes. Coatings produced in silicate-containing electrolyte exhibit the highest photocatalytic activity and improved corrosion resistance.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Stevan Stojadinovic, Nenad Radic, Nenad Tadic, Rastko Vasilic, Aleksander Tsanev
Summary: TiO2 coatings modified by Bi2O3 particles were successfully formed by plasma electrolytic oxidation process. The coatings showed enhanced photocatalytic activity, attributed to the reduced recombination rate of photo-generated electron/hole pairs through the coupling of TiO2 and Bi2O3.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic, Nenad Tadic
Summary: Coatings of modified Anatase TiO2 with Sb2O3 particles showed higher photocatalytic activity compared to pure TiO2, with the best performance observed when 0.75 g/L of Sb2O3 particles were added. The increased photocatalytic activity is attributed to a reduction in the recombination rate of photogenerated electrons and holes due to the coupling of TiO2 and Sb2O3.
Article
Chemistry, Physical
Damian Gizinski, Kristina Mojsilovic, Anna Brudzisz, Ursa Tiringer, Rastko Vasilic, Peyman Taheri, Wojciech J. Stepniowski
Summary: In this study, barrel-like hybrid Cu(OH)(2)-ZnO structures were formed on an alpha-brass substrate through low-potential electro-oxidation. The morphology and phase composition of the grown layer were found to depend strongly on the applied potential. Additionally, the Cu(OH)(2)-ZnO composite exhibited photoactivity, leading to the degradation of an organic dye under both UV and visible light.
Article
Chemistry, Inorganic & Nuclear
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic, Nenad Tadic, Aleksander Tsanev
Summary: The effect of selected transition metals (Mn, Ni, Co) modified TiO2 coatings on their surface morphology, phase and chemical composition, optical absorption, and photocatalytic degradation of methyl orange (MO) was investigated. The results showed that the modified coatings had higher photocatalytic activity and lower photogenerated electron/hole recombination rate.
SOLID STATE SCIENCES
(2022)
Article
Chemistry, Physical
Ting Wu, Carsten Blawert, Maria Serdechnova, Polina Karlova, Gleb Dovzhenko, D. C. Florian Wieland, Stevan Stojadinovic, Rastko Vasilic, Linqian Wang, Cheng Wang, Kristina Mojsilovic, Mikhail L. Zheludkevich
Summary: A comparison of PEO layers formed in different electrolytes reveals that the phosphate-based electrolyte is the most promising one. The compositions and structures of the coatings formed in different electrolytes vary. All the coatings exhibit good corrosion resistance and photocatalytic performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic
Summary: MgAl and MgAl/ZnO coatings with photocatalytic activity were prepared through plasma electrolytic oxidation of AZ31 magnesium alloy. The addition of ZnO particles significantly enhanced the photocatalytic activity of the coatings.
Article
Materials Science, Multidisciplinary
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic
Summary: Eu3+-doped MgAl oxide coatings synthesized by plasma electrolytic oxidation exhibited excellent photoluminescent and photocatalytic activity. Eu3+ ions occupied non-inversion symmetric sites, resulting in the formation of PL emission peaks. The presence of oxygen vacancies led to higher photocatalytic activity in Eu3+-doped MgAl oxide coatings. The coating formed in aluminate electrolyte with 4 g/L of Eu2O3 particles exhibited the highest photocatalytic activity.
Article
Nanoscience & Nanotechnology
Mila Krstajic N. Pajic, Ana S. Dobrota, Anca Mazare, Sladana Durdic, Imgon Hwang, Natalia V. Skorodumova, Dragan Manojlovic, Rastko Vasilic, Igor A. Pasti, Patrik Schmuki, Uros Lacnjevac
Summary: This study reveals that the surface effects of hydrogenated TiO2 nanotube arrays can convert Os, an unexplored platinum group metal, into a highly active electrocatalyst for the hydrogen evolution reaction (HER). The optimized Os@TNT composite exhibits low overpotential and stable performance in acidic medium, offering new possibilities for the fabrication of cost-effective PGM-based catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Nikola Bozovic, Kristina Mojsilovic, Srna Stojanovic, Ljiljana Damjanovic-Vasilic, Stevan Stojadinovic, Rastko Vasilic
Summary: This paper investigates the preparation and characterization of oxide coatings made by plasma electrolytic oxidation (PEO) process on aluminum in two different electrolyte solutions with opposite pH values. The properties of these coatings, including chemical composition, morphology, photoluminescent properties, and photocatalytic activity, are discussed. The results show that oxide coatings made in the alkaline environment have considerably higher photocatalytic activity compared to coatings made in the acidic environment.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic
Summary: TiO2/Al2TiO5 coatings obtained by plasma electrolytic oxidation of titanium in alkaline electrolyte with added NaAlO2 show significantly better photocatalytic activity (PA) in degradation of methyl orange under simulated sunlight than anatase TiO2 coatings obtained in pure alkaline electrolyte. The TiO2/Al2TiO5 coating with the highest PA was obtained in alkaline electrolyte with the addition of 2.0 g/L NaAlO2, which has approximately 2.4 higher PA than anatase TiO2. Photoluminescence indicates that increased PA of TiO2/Al2TiO5 coatings is associated with increased number of oxygen vacancy and other defects.
Article
Chemistry, Analytical
Stevan Stojadinovic, Nenad Radic, Rastko Vasilic
Summary: Ta2O5 coatings were created using micro-arc discharges during anodization on a tantalum substrate in a sodium phosphate electrolyte. The size of the discharges increased while the number of discharges decreased. The effect of discharge duration on the properties and applications of the coatings was investigated.
Article
Materials Science, Multidisciplinary
Hanna Maltanava, Stevan Stojadinovic, Rastko Vasilic, Sergey Karpushenkov, Nikita Belko, Michael Samtsov, Sergey Poznyak
Summary: Thick ZnO/ZnAl2O4 coatings were synthesized on zinc alloy Z1 substrates through plasma electrolytic oxidation (PEO) for different anodization times. The structural and optical properties of the coatings were characterized using SEM, XRD, diffuse reflectance and photoluminescence spectroscopy. The compositions of the coatings were found to be dependent on the anodization time and applied voltage. The photoluminescence spectra of the coatings varied according to the content of ZnO and ZnAl2O4.
Article
Chemistry, Multidisciplinary
Nikola Bozovic, Kristina Mojsilovic, Srna Stojanovic, Ljiljana Damjanovic-Vasilic, Maria Serdechnova, Carsten Blawert, Mikhail Zheludkevich, Stevan Stojadinovic, Rastko Vasilic
Summary: The preparation and properties of oxide coatings with immobilized ZSM-5 zeolite obtained by plasma electrolytic oxidation on aluminum support were investigated. The obtained composite coatings were characterized with respect to their morphology, phase and chemical composition, as well as photocatalytic activity and anti-corrosion properties. The coatings with Ce-exchanged ZSM-5 showed higher photocatalytic activity and more effective corrosion protection than those with pure ZSM-5.
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Chemical
Yongxiang Wu, Nguyen Thi Hong Nhung, Deqian Zeng, Nengneng Luo, Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study proposed a novel method for synthesizing flower-like vaterite calcium carbonate using nanobubble-containing ethanol and water mixed solution as the solvent and discussed the formation mechanism of vaterite with different shapes. The synthesized vaterite has significant practical interest in the integrated treatment of wastewater contaminated by heavy metals with effective Cd(II) removal, providing a promising field for studying heavy metal and pollutant adsorption in the liquid phase.
ADVANCED POWDER TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jian Gong, Lipo Cheng, Ming Liu, Jie Jiang, Xiaoduo Ou
Summary: This study investigates the effects of particle shape on the collapse of granular columns using the discrete element method. The results show that particle shape has a significant impact on deposition morphology, energy evolution, and mechanical coordination number. Sphericity and angularity are identified as the most important macroscale factors, while roughness has a weaker microscale influence.
ADVANCED POWDER TECHNOLOGY
(2024)
