Article
Chemistry, Multidisciplinary
Qiao Tang, Jiang Wu, Donghoon Kim, Carlos Franco, Anastasia Terzopoulou, Andrea Veciana, Josep Puigmarti-Luis, Xiang-Zhong Chen, Bradley J. Nelson, Salvador Pane
Summary: Piezocatalysis has gained attention for its potential in addressing energy shortages and environmental pollution. However, its efficiency is limited. Researchers successfully synthesized BaTiO3 nanosheets with exposed polar facets to enhance piezocatalytic activity. The nanosheets exhibited superior degradation rate of organic pollutants and hydrogen production capability, providing a new strategy for designing high-performance piezocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Qian Zhang, Tian Hou, Hao Shen, Chongshang Guan, Libing Duan, Xiaoru Zhao
Summary: In this study, S-doped BiOCl nanosheets were successfully synthesized via a facial hydrothermal reaction, leading to improved optical and photochemical properties. The S-doped BiOCl nanosheets with dominant {001} facets exhibited longer lifespans of photo-induced carriers and enhanced absorption of visible light, resulting in higher photocatalytic efficiency.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xiaofan Xiang, Laiyan Wu, Junjiang Zhu, Jiazhou Li, Xi Liao, Hongcheng Huang, Jiajie Fan, Kangle Lv
Summary: The study successfully degraded sulfadiazine (SDZ), a typical sulfonamides antibiotic, using photocatalytic oxidation technology. It was found that TiO2 nanosheets exhibited better photoreactivity towards SDZ degradation. The research also revealed the possible degradation pathways of SDZ and the promising application prospects of TiO2-NSs in removing SDZ.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Guiyun Yu, Chengyan Ge, Haiqin Wan
Summary: Pd catalysts supported on TiO2 nanosheets show higher catalytic efficiency compared to those supported on P25. The good catalytic activity is attributed to the better exposed crystal plane and dispersion of TiO2 nanosheets. Among all the catalysts, Pd/TiO2 NS prepared by impregnation method exhibits the highest catalytic activity.
Article
Nanoscience & Nanotechnology
Yin Peng, Nannan Zhao, Jinyun Liu
Summary: A BiOCl nanoring with co-exposed (110)/(001) facets was prepared using a selective etching mechanism. It demonstrated high photocatalytic performance towards organic dyes, degrading substances like butyl rhodamine B and methyl orange. The enhanced performance was attributed to the formation of type-II junctions between different crystal facets, leading to a sevenfold increase in reaction rate constant compared to BiOCl nanosheets.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Jin Jia, Yujun Liang, Gui Yang, Jian Yang, Xiaorui Zhang, Zhuoran Xiong, Ke Sa, Zikang Zeng, Yongsheng Han
Summary: This study successfully synthesized Na+-doped BTOC nanosheets with exposed active surfaces by controlling the feeding content of the molten salts. It was found that these nanosheets exhibited high photoactivity, with degradation rates 2 to 6 times higher than that of bulk BTOC.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Bingcai Chen, Pengpeng Li, Lian Sun, Yingde Wang, Bing Wang
Summary: This study successfully designs and synthesizes a sensor for detecting trace CO at low temperature by introducing In2O3 nanocubes and MOF-derived Co3O4 nanosheets to form a p-n heterojunction. The sensor shows good selectivity, ultralow detection limitation, high response, and fast response/recovery time.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Ceramics
Yong Wang, Guoqiang Tan, Shuaijun Feng, Yun Liu, Wenlong Liu, Ao Xia, Huijun Ren, Long Lv
Summary: （English Summary:）
In this study, a (001)TiO2/Ti3C2 MXene heterojunction photocatalyst was prepared using the hydrothermal oxidation method. The formation of TiO2 surface hetero-junctions, Schottky junctions, and surface plasmon resonance effect of plasma Ti3C2 MXene promoted the effective separation of photoexcited electrons and holes. The photocatalyst showed high degradation rates for tetracycline under near infrared light and full spectrum irradiation. This work provides a valuable reference for the design of MXene-based full spectrum photocatalysts.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Wei Zhang, Jinbo Xue, Qianqian Shen, Shufang Jia, Jiaqi Gao, Xuguang Liu, Husheng Jia
Summary: Black TiO2 nanosheet array films with oxygen vacancy on {001} facets were prepared by solid phase reaction with a mild aluminothermic reduction method. The films exhibit good photocatalytic CO2 reduction to CO under visible light irradiation, attributed to the formation of oxygen vacancy and the synergistic effect of special unsaturated coordination Ti-5c atom.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yaqin Meng, Jie Sun, Yanmei Guo, Jinxi Chen, Yongbing Lou
Summary: In this study, a solvothermal method was used to grow two-dimensional titanium dioxide nano sheets on the surface of polymeric carbon nitride nano sheets to form a heterojunction, which showed excellent photodegradation performance for norfloxacin. The superior photocatalytic performance was attributed to the reduction of the bandgap, the formation of S-scheme heterojunctions, and the hierarchical nano sheet structure and built-in electric field at the interface.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yixuan Xiao, Jiang Wu, Tao Jia, Tong Li, Ziqian Wang, Yongfeng Qi, Qizhen Liu, Xuemei Qi, Ping He
Summary: The BiOI nanosheets with dominantly exposed (001) facets exhibited better photocatalytic oxidation activity due to the conducive separation and migration of free radical carriers on this crystal plane, which promoted the photocatalytic reaction. This suggests that exposing dominant crystal planes can improve photocatalyst activity for environmental purification applications.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Qian Zhang, Wuyang Nie, Tian Hou, Hao Shen, Qiang Li, Chongshang Guan, Libing Duan, Xiaoru Zhao
Summary: This study developed a method for fabricating oxygen-deficient Br-doped BiOCl nanosheets with dominating {001} facets through hydrothermal reaction. It explored the impact of Br doping and specific facets on carrier separation and photocatalytic performance, showing significant improvements in visible light absorption and photocatalytic efficiency.
Article
Chemistry, Multidisciplinary
Kangkai Hu, E. Lei, Wei Li, Liuyuan Lai, Dan Zhao, Wei Zhao, Rui Xu
Summary: Highly exposed {001} surfaces of ITD-TiO2 and IDT-TiO2 microspheres were prepared through an intermittent two-step hydrothermal method, showing excellent photocatalytic activity compared to P25. IDT-TiO2 exhibited a significant increase in surface photovoltage, indicating more carriers can be generated during the photocatalytic process. The order of adding the titanium source and morphology control agent was found to be a key factor influencing the morphology of the sample in this research system.
Article
Chemistry, Physical
Lulu Zhang, Yongqiang Yang, Huaze Zhu, Hui-Ming Cheng, Gang Liu
Summary: Fe-doped NiS2 microcrystals with favorable phase, surface structure and electronic structure were successfully synthesized for efficient electrocatalytic water splitting, demonstrating high performance and stability in OER.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yang Yang, Junmin Peng, Huilin Tao, Zhou Yang, Yidong Hou, Wei Lin, Jinshui Zhang
Summary: The development of efficient catalysts is crucial for the photocatalytic ozonation process used in organic wastewater treatment. However, the influence of exposed facets and surface defects of the catalyst on the performance of photocatalytic ozonation is not well-studied. In this study, ZnO nanocomposites with different preferentially exposed crystal facets were synthesized and used for the photocatalytic ozonation of phenol. The results showed that the exposed {0001} facets and oxygen vacancies helped in the separation and transfer of photogenerated charges and improved the adsorption and activation of ozone molecules on the catalyst surface, leading to higher TOC removal rate.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Nanoscience & Nanotechnology
Kaplan Kirakci, Daniel Buzek, Petra Peer, Vojtech Liska, Jiri Mosinger, Ivana Krizova, Matous Kloda, Sona Ondrusova, Kamil Lang, Jan Demel
Summary: The study introduced a polymeric nanostructured membrane that released elemental iodine to combat pathogenic bacteria and viruses. The membrane exhibited strong antibacterial and antiviral properties, showcasing a potential avenue for the development of MOF-based materials for biological applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Matous Kloda, Tomas Plechacek, Sona Ondrusova, Petr Brazda, Petr Chalupsky, Jan Rohlicek, Jan Demel, Jan Hynek
Summary: Metal-organic frameworks (MOFs) have garnered attention as potential proton conductors due to their possibility of rational design and tuning of properties, as well as their clear conduction pathways provided by crystalline structure. The study presents two new MOF structures, ICR-10 and ICR-11, based on tetratopic phosphinate ligands, which demonstrate high proton conductivity.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jakub Plasil, Gwladys Steciuk, Juraj Majzlan, Radek Skoda, Jan Filip, Martin Petr, Jan Kolarik, Mariana Klementova, Oliver Baehre, Gert Kloess, Ladislav Lapcak
Summary: The weathering of ore minerals produces initial products that are often poorly characterized but can significantly affect the fate of metals in the system. In this study, 3D electron diffraction techniques were used to characterize nanocrystalline phases in the weathering of uraninite-sulfide. The study identified previously unknown phases and revealed that the abundance of iron controls the formation of different weathering products.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Chemistry, Physical
Vasily Lavrentiev, Jan Pokorny, Dagmar Chvostova, Mariana Klementova, Inna Lavrentieva, Jiri Vacik, Alexandr Dejneka
Summary: We report the detection of plasmon-enhanced Raman scattering (PERS) in self-assembled AgxC60 nanocomposite films and investigate the evolution of this effect with increasing Ag concentration, x, in the range of 2 < x < 25. The PERS effect is found to be closely related to the dipolar plasmonic mode generated by uniform 3D-ensemble of Ag nanoparticles in the C-60-based matrix. The analysis of absorption spectra reveals strong coupling between the dipolar plasmon mode and the C-60 low-energy exciton, indicating energy exchange between high- and low-energy polaritonic states. The obtained PERS spectra show sensitivity of the C-60 vibrational modes to the plasmonic field strength, which can be tuned by adjusting the Ag concentration.
Article
Chemistry, Organic
Jan Demel, Matous Kloda, Kamil Lang, Karel Skoch, Jan Hynek, Adam Opravil, Matyas Novotny, Jonathan Bould, Marcel Ehn, Michael G. S. Londesborough
Summary: The thermolysis of nido-B10H14 in benzene generates several phenylated borane molecular species, with 5-Ph-nido-B10H14 being the main product. These phenylated compounds provide valuable insights into the assembly and structure of Activated Borane, and exhibit strong blue fluorescence. They also enable the straightforward synthesis of highly luminescent organic-borane hybrid systems.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Arijit Jana, Madhuri Jash, Wakeel Ahmed Dar, Jayoti Roy, Papri Chakraborty, Ganesan Paramasivam, Sergei Lebedkin, Kaplan Kirakci, Sujan Manna, Sudhadevi Antharjanam, Jan Machacek, Monika Kucerakova, Sundargopal Ghosh, Kamil Lang, Manfred M. Kappes, Tomas Base, Thalappil Pradeep
Summary: This study presents a new class of thermally stable tetranuclear copper nanoclusters (Cu-4@oCBT, Cu-4@mCBT and Cu-4@ICBT) with tunable solid-state luminescence. They exhibit bright phosphorescence in their crystalline forms. Cu-4@oCBT and Cu-4@mCBT are green emitting, while Cu-4@ICBT is orange emitting. DFT calculations reveal the nature of their electronic transitions. Cu-4@oCBT and Cu-4@mCBT are thermally stable up to 400 degrees C, while Cu-4@ICBT is structurally flattened.
Article
Microbiology
Jana Pilatova, Daria Tashyreva, Jiri Tyc, Marie Vancova, Syed Nadeem Hussain Bokhari, Radim Skoupy, Mariana Klementova, Hendrik Kupper, Peter Mojzes, Julius Lukes
Summary: This study reveals that diplonemids, a group of marine planktonic protists, are capable of accumulating large amounts of barite and celestite crystals. These organisms have the potential to impact the cycling of barium and strontium in the ocean and contribute to the formation of sedimentary rocks. These findings provide new insights into the enrichment of barium and strontium proxies used in paleoceanographic reconstructions of global climate.
Review
Chemistry, Inorganic & Nuclear
Kaplan Kirakci, Michael A. Shestopalov, Kamil Lang
Summary: Over the past decades, the luminescent octahedral molybdenum, tungsten, and rhenium cluster complexes with the general formula [{M6Li8}La6]n have gained significant attention for their potential applications in photofunctional materials design. These complexes exhibit red phosphorescence with high quantum yields, sensitivity to oxygen, and production of singlet oxygen, O2(1Dg). The wide range of ligands allows for precise tuning of their physico-chemical, photophysical, and biological properties for various applications such as photodynamic therapy and photoinactivation of bacteria.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Inorganic & Nuclear
Bela Urban, David Dunlop, Robert Gyepes, Pavel Kubat, Kamil Lang, Michal Horacek, Jiri Pinkas, Ludmila Simkova, Martin Lamac
Summary: Neutral zirconocene complexes were synthesized and converted to their cationic counterparts by chloride abstraction. The cationic complexes exhibited enhanced luminescence properties. The structures of the complexes were characterized by X-ray diffraction, their electrochemistry was investigated by cyclic voltammetry, and their photophysical properties were studied with quantum-chemical calculations.
Article
Chemistry, Physical
Tomas Zikmund, Jiri Bulir, Michal Novotny, Ladislav Fekete, Sergii Chertopalov, Stefan Andrei Irimiciuc, Mariana Klementova, Jarmila Balogova, Jan Lancok
Summary: This study reports on the formation of silver nanoparticles by gas aggregation in a reaction chamber at room temperature. The size distribution of the nanoparticles was analyzed using atomic force microscopy, while their physical shape and optical properties were characterized using scanning and transmission electron microscopy and spectral ellipsometry. The nanoparticles were then incorporated into various materials to study their influence on emission spectra and transmittance at different annealing temperatures.
Article
Chemistry, Inorganic & Nuclear
Regis Guegan, Xiaoxue Cheng, Xiang Huang, Zuzana Nemeckova, Michaela Kubanova, Jaroslav Zelenka, Tomas Ruml, Fabien Grasset, Yoshiyuki Sugahara, Kamil Lang, Kaplan Kirakci
Summary: The photoinactivation of pathogenic bacteria using materials generating reactive oxygen species upon exposure to visible light can overcome the challenge of multidrug-resistant microbial pathogens. A nanocomposite material consisting of graphene oxide sheets adorned with nanoaggregates of octahedral molybdenum cluster complexes has been developed. The electrostatic interaction and close cohesion between the components in aqueous medium contributed to the potent antibacterial effect against Staphylococcus aureus upon illumination with blue light. The photoinduced electron transfer from the nanoaggregates to the graphene oxide sheets triggers the generation of reactive oxygen species, making graphene oxide and light-harvesting octahedral molybdenum cluster complexes promising for effective antibacterial strategies.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Regis Guegan, Xiaoxue Cheng, Xiang Huang, Zuzana Nemeckova, Michaela Kubanova, Jaroslav Zelenka, Tomas Ruml, Fabien Grasset, Yoshiyuki Sugahara, Kamil Lang, Kaplan Kirakci
Summary: The emergence of multidrug-resistant microbial pathogens poses a significant threat to effective antibiotic therapy. Photoinactivation using materials generating reactive oxygen species upon exposure to visible light can overcome this challenge by targeting vital components of living cells, reducing the likelihood of resistance development.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Alexis Verger, Gilles Dollo, Nolwenn Brandhonneur, Sophie Martinais, Stephane Cordier, Kamil Lang, Maria Amela-Cortes, Kaplan Kirakci
Summary: Efficient intracellular uptake of the photosensitizer is necessary for photodynamic applications. In this study, PEGylated poly(lactic-co-glycolic acid) nanoparticles loaded with an octahedral molybdenum cluster complex were prepared. The encapsulated complexes maintained their photocytotoxic activity and exhibited high colloidal stability, making them potential agents for photodynamic therapy.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Temitope Olabisi Abodunrin, Matous Kloda, Jan Demel, Marco Taddei
Summary: We synthesized and characterized a cationic metal-organic framework (MOF) called MIP-202-NO3, based on Zr-IV and l-aspartate, with nitrate as an extra framework counteranion. We examined its ion exchange properties and found that MIP-202-NO3 readily releases nitrate in aqueous solution, suggesting its potential as a controlled release platform.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Kaplan Kirakci, Robert Pola, Marina Rodrigues Tavares, Michal Pechar, Tomas Pribyl, Ivana Krizova, Jaroslav Zelenka, Tomas Ruml, Tomas Etrych, Kamil Lang
Summary: This study successfully conjugated octahedral molybdenum clusters with organic polymers, resulting in a highly stable nanosized conjugate. The conjugate demonstrated the ability to photosensitize the production of singlet oxygen without being toxic to cells. It also showed potential as a radiosensitizer upon X-ray irradiation. This research provides a promising therapeutic tool for photo/radiodynamic applications.
MATERIALS ADVANCES
(2023)
