Review
Chemistry, Analytical
Fanyong Yan, Xiule Wang, Yao Wang, Chunhui Yi, Ming Xu, Jinxia Xu
Summary: Metal-organic frameworks (MOFs) combined with carbon dots (CDs) form composites with excellent optical properties, which are promising for the preparation of a new generation of fluorescence sensors.
Article
Green & Sustainable Science & Technology
Pooja Chauhan, Savita Chaudhary, Rajeev Kumar
Summary: The study successfully utilized Pearl Millet seeds to synthesize carbon dots with excellent optical properties, enabling effective applications in wastewater treatment by enhancing selectivity and sensitivity towards metal ions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Yaya Xu, Donglei Guo, Yuan Luo, Jiaqi Xu, Kailong Guo, Wei Wang, Guilong Liu, Naiteng Wu, Xianming Liu, Aimiao Qin
Summary: By controlling the carbonization temperature and using pre-oxidized anthracite as the precursor, abundant oxygen-containing functional groups were successfully constructed in hard carbon. This strategy can enhance the reversible sodium ion adsorption and storage capacity of hard carbon, thus improving the performance of sodium-ion batteries.
Review
Chemistry, Physical
Vaibhavkumar N. Mehta, Milltal L. Desai, Hirakendu Basu, Rakesh Kumar Singhal, Suresh Kumar Kailasa
Summary: This article discusses the importance of integrating fluorescent nanomaterials with analytical tools, introduces the applications of fluorescent nanomaterials in the analysis of metal ions and cell bioimaging, and emphasizes their advantages such as high selectivity, sensitivity, and low detection limits.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Fuwei Qin, Qiqi Li, Tingting Tang, Jiayao Zhu, Xuemeng Gan, Yaoyao Chen, Yizhao Li, Su Zhang, Xueli Huang, Dianzeng Jia
Summary: Functional carbon dots (CDs) were prepared from solid-waste coal liquefaction residue (CLR) using a mild oxidation method. The CDs exhibited enriched oxygen-bearing functional groups and simultaneous removal of ash. The CDs were used to prepare microporous carbon with high surface area and compaction density, and also used as a functional reinforcing phase for activated carbon nanofibers, resulting in improved performance for supercapacitors.
Article
Chemistry, Applied
Linlin Su, Binbin Shi, Yixiao Hang, Chensheng Xian, Jin Huang
Summary: The study synthesized multi-functional carbon dots that can be utilized for various purposes in different solvents, including pH detection, metal ion sensing, and temperature/laser response, successfully achieving multi-functional characteristics.
Article
Nanoscience & Nanotechnology
Panpan Zhu, Kejun Tan
Summary: Dual-emission carbon dots were synthesized via a solvothermal method and used to develop a fluorescence platform for detecting contaminants in environmental waters, demonstrating high sensitivity and selectivity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Bin Wang, Xiao-Qin Zhou, Jun-Ming Lin, Shu-Yu Liu, Cong-Hua Lu, Li-Juan Liu, Yu Chen, Li-Ping Yu
Summary: The study synthesized HPEI-CDs with concentration-modulated dual-excitation fluorescence property and successfully detected Fe3+ using them as a ratiometric sensor, demonstrating a wide linear response concentration range and low detection limit. The sensor showed good selectivity and anti-interference capacity due to the high concentration of HPEI-CDs.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Paper & Wood
Donghao Hu, Kuan-Hsuan Lin, Yinchao Xu, Mikio Kajiyama, Marcos A. Neves, Kazuyoshi Ogawa, Toshiharu Enomae
Summary: This study presents a simple one-step microwave-assisted synthesis approach for preparing fluorescent carbon dots with excitation-dependent emission properties. The synthesized CDs can be quenched selectively by Fe3+ and Mn2+, making them suitable for the development of a fluorescence-sensing system for quantitative detection of these ions.
Article
Spectroscopy
Dan Chang, Zhonghua Zhao, Wenjing Niu, Lihong Shi, Yongxing Yang
Summary: This study introduces an eco-friendly synthesis method for carbon dots and a label-free sensing platform for ultrasensitive Fe3+ recognition. The CDs prepared through hydrothermal strategy exhibit exceptional stability and biocompatibility, making them suitable for multicolour imaging applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Energy & Fuels
Chunhua Zhang, Jiahui Shen, Ji Li, Mei Wan
Summary: By studying the inhibition mechanism of different chloride salts on the spontaneous combustion of coal, it was found that different chloride salts have different inhibitory effects at different stages, and magnesium chloride participates in the entire coal-oxygen reaction process.
Article
Chemistry, Analytical
Rong Liao, Si Dai, Biao Liu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: A novel strategy for photocurrent polarity switchable sensing is reported in this study by regulating electrostatic interactions between two semiconductor photoactive materials. The method achieves low detection limits and a wide linear detection range in the detection of HAase activity, providing a new and effective approach for photocurrent polarity switching and HAase activity detection.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ping Wang, Mohammed J. Meziani, Yingqiang Fu, Christopher E. Bunker, Xiaofang Hou, Liju Yang, Hind Msellek, Melina Zaharias, Jasmine P. Darby, Ya-Ping Sun
Summary: Carbon dots (CDots) are surface-passivated small carbon nanoparticles, which can serve as excellent fluorescence sensors for organic analytes and metal ions. However, some dot samples used in studies are actually nano-carbon/organic hybrids with highly porous structures that play a dominant role in sensing results. The tradeoffs between sensitivity, accuracy, and reproducibility in using these hybrid materials for fluorescence sensing are discussed.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Analytical
Xin Wang, Weiguang Shi, Yuda Wang, Dan Cheng, Jiahui Liu, Shihan Xu, Wei Liu, Biao Dong, Jiao Sun
Summary: In this study, blue fluorescent PAMAM polymer dots with good fluorescence properties and iron ion detection ability were successfully prepared using a simple hydrothermal method.
Review
Engineering, Electrical & Electronic
Zhiyuan Jiang, Linnan Guan, Xiangjun Xu, Erjing Wang, Chengliang Wang
Summary: Carbon dots, as a type of carbon nanomaterials, have been extensively used in electrochemical energy storage devices due to their rich physical and chemical properties, good electrical conductivity and photoelectric conversion capability. They have shown great potential in supercapacitors, lithium-ion batteries, etc.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Katarzyna Skibinska, Konrad Wojtaszek, Lukas Krause, Anna Kula, Xuegeng Yang, Mateusz M. Marzec, Marek Wojnicki, Piotr Zabinski
Summary: Catalysts with tailored composition prepared by a simple electrochemical process exhibit distinct catalytic activity towards hydrogen and oxygen evolution reactions. In this study, Co-Ni cones were synthesized using a one-step method and their catalytic performance was strongly influenced by changes in surface composition caused by controlled oxidation. The spontaneously formed oxide layer decreased the catalytic performance compared to the fresh sample. Proper storage of synthesized catalysts is essential for maintaining desired catalytic applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Karolina Kolczyk-Siedlecka, Robert P. Socha, Xuegeng Yang, Kerstin Eckert, Marek Wojnicki
Summary: This paper presents the potential use of carbon sorbents in recovering rhenium(VII) from highly diluted electrolytes. Activated carbon is found to be a suitable sorbent due to its high chemical resistance and osmotic-shock resistance. The sorption mechanism is complex and strongly influenced by temperature.
Article
Chemistry, Physical
Arpad Turcsanyi, Ditta Ungor, Marek Wojnicki, Edit Csapo
Summary: Fabrication protocol of BSA- and LYZ-stabilized Au/Ag NCs was optimized by adjusting the protein/metal ion ratios, metal concentration, pH, and incubation time. The incorporation of silver into the gold core significantly enhanced the fluorescence properties of the nanoclusters. The stability of the bimetallic NCs during interaction with biocolloids was much higher compared to monometallic derivatives, indicating their potential as fluorescent reporters in biomedical applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Konrad Wojtaszek, Filip Cebula, Bogdan Rutkowski, Magdalena Wytrwal, Edit Csapo, Marek Wojnicki
Summary: This study synthesized core-shell nanoparticles with a Ni core and a Ag-Ni nano alloy shell by reducing Ni and Ag ions with sodium borohydride in the presence of trisodium citrate as a stabilizer. XRD and XPS spectroscopic studies were conducted to determine the phase composition and oxidation states of the nanoparticles, respectively. The composition and shape of the particles were determined using HR-TEM EDS testing. The obtained nanoparticles had a size of 11 nm. Catalytic activity research was carried out using a methylene blue reduction system, and the catalytic activity of the colloids was measured using UV-Vis spectrophotometry. The Ag-Ni alloy exhibited approximately ten times higher catalytic activity than pure silver nanoparticles of a similar size.
Article
Chemistry, Multidisciplinary
Rita Belteki, Loretta Kuklis, Gyongyi Gombar, Ditta Ungor, Edit Csapo
Summary: The potential of amino acids like L-phenylalanine (Phe), L-glutamine (Gln) and L-arginine (Arg) in the preparation of fluorescent molecular-like gold and silver nanostructures is discussed. The effect of synthesis conditions and the molecular characteristics of these amino acids on the structure of the formed products is demonstrated. The optical characterizations of the blue-emitting products, including lifetime and quantum yield (QY%), were carried out, confirming that the fluorescence originates from metallic nanoclusters (NCs).
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Anna Malek, Marek Wojnicki, Aleksandra Borkowska, Michal Wojcik, Gabriela Ziolek, Roman Lechowski, Katarzyna Zabielska-Koczywas
Summary: In this study, the potential inhibitory effect of glutathione-stabilized gold nanoparticles (Au-GSH NPs) on canine osteosarcoma (OS) cell extravasation was assessed using the ex ovo chick embryo chorioallantoic membrane (CAM) model. The results showed that Au-GSH NPs significantly inhibited the extravasation rates of canine OS cells and were non-toxic, suggesting their potential as anti-metastatic agents for OS treatment.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Dawid Kutyla, Kano Nakajima, Michihisa Fukumoto, Marek Wojnicki, Karolina Kolczyk-Siedlecka
Summary: This study synthesized Ni coatings with high catalytic efficiency by increasing the active surface and modifying Pd as a noble metal. Porous Ni foam electrodes were obtained by electrodeposition of Al on a nickel substrate. By comparing with flat Ni plates, the obtained porous Ni foams showed improved morphology development with a 5.5-times larger active surface area.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Konrad Wojtaszek, Tomasz Tokarski, Dawid Kutyla, Karolina Kolczyk-Siedlecka, Piotr Zabinski, Edit Csapo, Robert P. Socha, Marc Escriba-Gelonch, Volker Hessel, Marek Wojnicki
Summary: The paper presents research results on synthesizing silver nanoparticles in aqueous solutions and their extraction into the organic phase. The extraction process is most effective using n-hexane > cyclohexane > toluene > chloroform > ethyl acetate. The dielectric constant of the organic phase has a correlation with its ability to extract nanoparticles, with lower dielectric constant leading to higher extractability. The transfer of silver nanoparticles to the organic phase also affects their hydrodynamic radius and particle shape, highlighting the complexity of interfacial processes.
Review
Computer Science, Information Systems
Hasan Shabbir, Marek Wojnicki
Summary: Quantum dots (QDs) are zero-dimensional nanomaterials with charge confinement in all directions, possessing fascinating properties such as size-dependent bandgap tunability, good optical absorption coefficient, tunability of absorption and emission wavelength, and low-cost synthesis. This review briefly discusses the applications of QDs in solar cells and quantum dot lasers, and then delves into their usage in photodetectors. Various metallic materials (e.g. lead sulfide and indium arsenide) and nonmetallic materials (e.g. graphene and carbon nanotubes) are covered, along with their detection mechanisms.
Article
Biochemistry & Molecular Biology
Adam Juhasz, Ditta Ungor, Norbert Varga, Gabor Katona, Gyorgy T. Balogh, Edit Csapo
Summary: The encapsulation possibilities of neuroprotective drug KYNA using lipid-based nanocarriers to increase BBB permeability were studied. Preparation conditions and characterization of liposomes were optimized. The drug-loaded liposomes showed improved BBB penetration and lipid membrane retention compared to the unformatted drug.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Anna Komenda, Marek Wojnicki, Dzmitry Kharytonau, Grzegorz Mordarski, Edit Csapo, Robert P. Socha
Summary: Thin films of SnS were deposited on a copper substrate using a chemical bath method, and the effect of Na doping on the films was studied. SEM analysis showed that the films deposited at 80°C had a compact morphology, and the addition of a commercial surfactant resulted in rounded edges of the SnS grains. The thickness of the SnS layers on the copper substrate was found to be 230 nm, and the deposition parameters did not affect the thickness.
Article
Polymer Science
Laszlo Seres, Edit Csapo, Norbert Varga, Adam Juhasz
Summary: This paper investigates the assembly process of colloidal hyaluronic acid (HyA) based hydrogel particles, with a focus on the formation of surfactant-neutralized polysaccharide networks. By measuring various indicators, such as rheology, light scattering, zeta potential, turbidity, and charge titration, it is found that the preparation of HyA-CTAB particles can be well controlled. The results show that a higher amount of negative charges can be detected on the polymer chain at smaller initial amounts of HyA, and the pH has negligible effect on the formation process.
Article
Biochemistry & Molecular Biology
Adam Juhasz, Gyongyi Gombar, Egon F. Varkonyi, Marek Wojnicki, Ditta Ungor, Edit Csapo
Summary: Fluorescent gold nanoclusters have been successfully used as fluorescent markers for imaging of cells and tissues, and their potential role in drug delivery monitoring is coming to the fore. In addition, the development of biosensors using structure-tunable fluorescent nanoclusters is also a prominent research field. The primary motivation of this article is to carry out a series of tests to partially fill the scientific gap in the thermodynamic characterization of the interaction between nanoclusters and relevant biomolecules/proteins.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
