Article
Chemistry, Multidisciplinary
Alexey S. Galushko, Daniil A. Boiko, Evgeniy O. Pentsak, Dmitry B. Eremin, Valentine P. Ananikov
Summary: A method for characterizing supported catalysts in a spatially localized manner has been proposed. This approach utilizes various microscopes to track the evolution of metal particles, including individual atoms, in catalytic reactions. By studying the behavior of palladium atoms and nanoparticles, it was discovered that single atoms leach out into solution and exhibit higher catalytic activity compared to surface nanoparticles. These findings challenge the assumption that the superior catalytic activity comes from the operation of single atomic catalytic centers on the surface of the support.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Biochemistry & Molecular Biology
Naznin Shaikh, Padmaja Pamidimukkala
Summary: This study successfully prepared Pd@IO-Chitosan palladium-based catalyst and characterized it using various spectroscopic and microscopic techniques. The catalyst showed excellent catalytic activity in Suzuki coupling reactions, with a low loading of palladium and the ability to be recycled multiple times without significant decrease in performance.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Turbasu Sengupta, Dinesh Bista, Shiv N. Khanna
Summary: The doping of a Pd cluster with Ag atoms enhances the efficiency of Suzuki-Miyaura cross-coupling reactions by reducing the barriers for oxidation and reduction steps. The Ag atom adjacent to Pd sites in a Pd12Ag cluster donates charge to lower the barriers, demonstrating a unique donor-acceptor characteristic between Ag and Pd atoms. This study shows that altering the active site atom can control the activation energies of redox steps, suggesting the potential of silver-doped Pd-n clusters as catalysts.
Article
Chemistry, Multidisciplinary
Lei Zhang, Wenbo Hu, Heng Li, Jicheng Shi, Bingxin Yuan
Summary: An easily made and highly efficient terphenylphosphine ligand, TXPhos, is developed and applied for Pd-catalyzed Suzuki-Miyaura coupling reactions in aqueous media at ppm level. The terphenyl skeleton of TXPhos provides high stability and reactivity by increasing steric bulkiness and enhancing Pd-arene interactions. The TXPhos palladacycle exhibits excellent product yield under air atmosphere and significantly shortens the reaction period to minutes under micellar conditions, with a TOF up to 40,000 s(-1).
Article
Multidisciplinary Sciences
Sukyoung Won, Hee Eun Lee, Young Shik Cho, Kijun Yang, Jeong Eun Park, Seung Jae Yang, Jeong Jae Wie
Summary: Magnetically responsive composites allow miniaturized robots to have collective actuation and switch between rectilinear and rotational swimming. These nanocomposite robots, with multimodal swimming capabilities, can generate and control vortices for transportation tasks. The agile and modular nature of these robots enables various applications such as microplastic removal, microfluidic vortex control, and pharmaceutical transportation.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Mohammad Dohendou, Mohammad G. Dekamin, Danial Namaki
Summary: A supramolecular palladium(ii) nanocatalyst supported on modified chitosan by dl-methionine using an ethylenediaminetetraacetic acid linker was designed and prepared. The catalytic activity of this nanocomposite was investigated in the Heck cross-coupling reaction for the synthesis of biologically active cinnamic acid ester derivatives, showing high efficiency and environmental friendliness.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Iryna P. Mikheenko, James A. Bennett, Jacob B. Omajali, Marc Walker, D. Barrie Johnson, Barry M. Grail, David Wong-Pascua, Jonathan D. Moseley, Lynne E. Macaskie
Summary: A heterogeneous Pd catalyst was synthesized using sulfidogenic bacteria, which showed high selectivity and slower reaction rate. However, heat-treated catalysts had significantly reduced activity, but comparable activity to commercial catalysts can be achieved by using other bacterial species, providing a feasible route for economical catalyst production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Applied
Yucang Liang, Xin Ning, Yanzhong Zhen, Yantu Zhang
Summary: In this study, a hierarchically structured catalyst Pd/Al-MIL-53@HOOC-SBA-15 was prepared and applied in the Suzuki-Miyaura cross-coupling reaction. The catalyst exhibited high catalytic performance and reusability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Yuqing Ren, Yao Chen, Qingfei Zhao, Zhenmin Xu, Meijun Wu, Zhenfeng Bian
Summary: By utilizing a photocatalytic dissolution technique, specific crystalline facets on Pd NPs can be controllably exposed, leading to significant impact on selectivity and reaction activity. The top-down etching scheme selectively passivates the edges of single-crystal Pd nanocubes and exposes the {111} facets, resulting in an 84% increase in photocatalytic Suzuki coupling reaction yields. This technique is also applicable to improve the activity of commercial Pd/C and Pd/Al2O3 catalysts, and is expected to pave a new path in the field of nanoparticle crystallographic conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Anastasia Hager, Nicolas Guimond, Lars Grunenberg, Christine Hanisch, Sebastian Steiger, Andre Preuss
Summary: The traditional synthesis method of the androgen receptor antagonist BAY 1161116 was inefficient and difficult, while a new synthetic pathway using trans-aminocyclohexanol and a palladium-catalyzed etherification reaction showed improved scalability and efficiency. This four-step synthesis can be reliably conducted on a multikilogram scale, with purification achieved through simple extraction and crystallization procedures.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2021)
Article
Chemistry, Multidisciplinary
Dewan Azharul Islam, Himadri Acharya
Summary: A facile chemical method was developed to fabricate well-dispersed, approx. 5 nm sized Pd-nanoparticles-deposited ZnAl-LDH/rGO nanocomposite as a highly efficient and stable catalyst for the reduction of aromatic nitro compounds. The catalyst exhibited excellent heterogeneous catalytic activity and recycling stability.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Oleg N. Shishilov, Ravshan S. Shamsiev, Nailya S. Akhmadullina, Vitaly R. Flid
Summary: Palladium nitrsosyl carboxylates are effective catalysts for C-H/C-H oxidative homocoupling of arenes with electron-donor and electron-withdrawing groups. Trifluoroacetate complex II shows higher stability and promising performance, with a mechanism involving two deprotonation steps proceeding in different ways. The involvement of the NO group in the rate-determining step of CMD pathway was also found.
Article
Chemistry, Physical
Jordi Ballesteros-Soberanas, Antonio Leyva-Perez
Summary: We demonstrate that palladium on carbon (Pd/C), a widely available supported Pd catalyst, becomes a selective catalyst after the addition of catalytic amounts of commercially available electron-poor phosphines in the semihydrogenation reaction of alkynes. The catalytic activity is <= 7 times greater, and the selectivity is comparable to that of the industrial benchmark Lindlar catalyst.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Emad N. Al-Shafei, Mohammed Z. Albahar, Mohammad F. Aljishi, Ali N. Aljishi
Summary: This study evaluated the performance and influence of a trimetallic catalyst based on ZrO2/TiO2 in the coupling reaction of CO2 with methane. The addition of a third metal significantly affected the activation of methane and the yield of acetic acid.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Nardana Sivendran, Nico Pirkl, Zhiyong Hu, Angelino Doppiu, Lukas J. Goossen
Summary: Halogen-bridged methylnaphthyl (MeNAP) palladium dimers, presented as versatile Pd precursors, demonstrate excellent catalytic performance by in situ conversion into well-defined monoligated complexes. They show benchmark activities in challenging reactions, enable record-setting yields, and can achieve previously elusive cross-couplings.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Antonio Monopoli, Michele Casiello, Caterina Fusco, Lucia D'Accolti, Francesco Iannone, Angelo Nacci
Summary: A new expeditious synthesis of tetramethyl salvianolic acid F is proposed using a sequential double Heck coupling catalyzed by palladium nanoparticles in ionic liquids. This method achieves a high overall yield of 66% and allows for the synthesis of unnatural salvianolic-like compounds with potential bioactivity.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Electrochemistry
Antonio Domenech-Carbo, Michele Giannuzzi, Annarosa Mangone, Lorena Carla Giannossa, Francesca Di Turo, Elena Cofini, Maria Teresa Domenech-Carbo
Summary: The study investigates the electrocatalytic effect of hematite in archaeological ceramics, revealing significant changes in redox reactions of hematite after heating. The solid-state voltammetric response and SECM analysis provide valuable information on the catalytic effects of hematite in ORR and OER.
Article
Biochemistry & Molecular Biology
Antonio Monopoli, Giovanni Ventura, Andrea Aloia, Fulvio Ciriaco, Angelo Nacci, Tommaso R. Cataldi, Cosima D. Calvano
Summary: This study explored the rational design of matrix for enhanced sensitivity and overall performance of matrix-assisted laser desorption/ionization mass spectrometry. Various matrices with different functionalities and substituents were synthesized and tested across different sample types. The results demonstrated improved performance in terms of ionization capability and interference-free spectra, especially for the analysis of phospholipids and neutral lipids.
Article
Multidisciplinary Sciences
Caterina Fusco, Michele Casiello, Pasquale Pisani, Antonio Monopoli, Fiorenza Fanelli, Werner Oberhauser, Rosella Attrotto, Angelo Nacci, Lucia D'Accolti
Summary: Photoreduction of CO2 with sunlight using a low-cost catalytic system based on steel slag modified with nanostructured palladium was investigated, and resulted in the conversion of CO2 into methanol and hydrogen.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Andrea Aloia, Michele Casiello, Lucia D'Accolti, Caterina Fusco, Angelo Nacci, Antonio Monopoli
Summary: A novel Pd-catalysed oxidative coupling reaction between benzoic acids and vinylarenes or acrylates to form isocoumarins and phthalides is described. The reaction takes place smoothly in molten tetrabutylammonium acetate via selective C-H bond activation, employing a low amount of ligand-free palladium acetate as the catalyst, under atmospheric pressure of oxygen. Sub-stoichiometric copper acetate is also required as a reoxidant for palladium.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Environmental Sciences
Lorena Carla Giannossa, Daniela Cesari, Eva Merico, Adelaide Dinoi, Annarosa Mangone, Maria Rachele Guascito, Daniele Contini
Summary: This study aimed to investigate the inter-annual variability of PM2.5 and PM10 concentrations and chemical composition in an urban background site. The study found that combustion sources have the largest impact on PM2.5 DTTV, while secondary nitrate contributes significantly to DTTV in both fine and coarse particles.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Maria Chiara Sportelli, Rosaria Anna Picca, Margherita Izzi, Nicola Cioffi
Summary: This study presents a straightforward method to synthesize copper sub-microparticles with a green core-shell structure using poly(n-vinyl)pyrrolidone (PVP) as stabilizer. Copper sulfate pentahydrate and glucose were used as precursor and reducing agent, respectively, to prepare Cu@PVP colloids. The presence of PVP eliminated the need for an inert atmosphere during the synthesis, simplifying the process. The morphology and spectroscopic properties of the Cu@PVP colloids were characterized, confirming the formation of a PVP layer around the copper core. These colloids were further utilized in composite thin films for potential antimicrobial applications in combination with a recyclable polymer, polycarbonate (4,4'-(1-methylethylidene)bis(phenol)).
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Annarosa Mangone, Maria Cristina Caggiani, Tiziana Forleo, Lorena Carla Giannossa, Pasquale Acquafredda
Summary: The blue color of glass and ceramic glazes produced in Apulia and Basilicata (Southern Italy) between the 13th and 14th centuries and connected to the Norman-Swabian Emperor Frederick II has been a subject of investigation. The usual association with lapis lazuli has been questioned, as the mineral hauyne, found in the region, can also give a blue color when heated. This study found hauyne crystals in a ceramic dish, supporting the hypothesis that local hauyne-bearing sources were used as raw materials.
Article
Biochemistry & Molecular Biology
Annarosa Mangone, Camilla Colombi, Giacomo Eramo, Italo Maria Muntoni, Tiziana Forleo, Lorena Carla Giannossa
Summary: The wall paintings of five Hellenistic tombs in Apulia were analyzed using various techniques to determine the painting techniques used and their context within Hellenistic tomb painting in Southern Italy. The study aimed to investigate if technical knowledge influenced the adoption of Hellenistic artistic models and if this knowledge was locally present. The analysis revealed the use of fresco and dry applications for different tombs, and a typical palette of lime, charcoal, hematite, goethite, and Egyptian blue. Additionally, refined preparatory layers and the use of specific pigments suggested the involvement of a local workshop in the decoration of one tomb.
Article
Electrochemistry
Margherita Izzi, Maria Chiara Sportelli, Rosaria Anna Picca, Nicola Cioffi
Summary: The present study proposes a one-step synthesis of Zn/Ca hybrid nano-oxides combining an electrochemical route to ZnO nanostructures with the wet chemical production of Ca(OH)(2) nanostructures. The nanocoating prepared with Zn-Ca0.1 exhibited a Zn2+ release increasing up to 1 mu mol cm(-2) in 24 h, while Zn-Ca0.4-based nanocoatings released a constant value of about 0.35 mu mol/cm(2). Both types of nanocoatings showed good antimicrobial activity against Bacillus subtilis after 48 h and hydrophilic behavior over 28 days.
Article
Infectious Diseases
Syed Imdadul Hossain, Diellza Bajrami, Maria Chiara Sportelli, Rosaria Anna Picca, Annalisa Volpe, Caterina Gaudiuso, Antonio Ancona, Luigi Gentile, Gerardo Palazzo, Nicoletta Ditaranto, Boris Mizaikoff, Nicola Cioffi
Summary: The aim of this study is to develop a green and multifunctional antibiofilm water-insoluble coating with laser-ablated Ag NPs (L-Ag NPs) and montmorillonite (MMT). The characterization confirmed the successful incorporation of L-Ag NPs into MMT and the contact and deposition of Ag NPs onto the surface. The controlled release of Ag ions from the L-Ag/MMT/beeswax coating was supported by the antimicrobial ion release kinetic profile.
Review
Chemistry, Multidisciplinary
Syed Imdadul Hossain, Ekaterina A. Kukushkina, Margherita Izzi, Maria Chiara Sportelli, Rosaria Anna Picca, Nicoletta Ditaranto, Nicola Cioffi
Summary: This review provides a comprehensive overview of Ag-, Cu-, and ZnO-modified MMT, including preparation methods, materials characterization, mechanisms of action, antimicrobial activity on different bacterial strains, real life applications, and environmental and toxicity issues.
Article
Pharmacology & Pharmacy
Adriana Trapani, Stefano Castellani, Lorenzo Guerra, Elvira De Giglio, Giuseppe Fracchiolla, Filomena Corbo, Nicola Cioffi, Giuseppe Passantino, Maria Luana Poeta, Pasqualina Montemurro, Rosanna Mallamaci, Rosa Angela Cardone, Massimo Conese
Summary: We have successfully formulated solid lipid nanoparticles (SLNs) containing dopamine (DA) and grape-seed-derived proanthocyanidins (GSE) for Parkinson's disease (PD) treatment. The combination of GSE and DA has a synergistic effect in reducing PD-related oxidative stress. Two methods of DA/GSE loading were studied, and it was found that coencapsulating GSE resulted in smaller SLN size and higher cellular uptake compared to adsorbing GSE onto preformed DA containing SLNs.
Review
Nanoscience & Nanotechnology
Margherita Izzi, Maria C. C. Sportelli, Luisa Torsi, Rosaria A. A. Picca, Nicola Cioffi
Summary: ZnO nanostructures (NSs) show significant antimicrobial activity and are highly biocompatible, chemically stable, and low in toxicity. This review focuses on the preparation and antimicrobial use of ZnO NSs. Different synthesis approaches including sol-gel, hydrothermal, biogenic, and electrochemical methods are discussed, along with their scalability, simplicity, and efficacy. The application of ZnO NSs in various fields and their antimicrobial mechanisms of action, cell resistance, and cytotoxicity are also highlighted. Additionally, the future prospects of ZnO NSs in this application field are addressed.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Syed Imdadul Hossain, Maria Chiara Sportelli, Rosaria Anna Picca, Luigi Gentile, Gerardo Palazzo, Nicoletta Ditaranto, Nicola Cioffi
Summary: This study successfully synthesized green, facile, scalable, reproducible, and stable silver chloride/benzyldimethylhexadecyl-ammonium chloride (AgCl/BAC) colloidal nanoantimicrobials using a simple method similar to chemistry lab titration. The morphology and stability of the nanocolloids were investigated, and it was found that the AgCl/BAC nanoantimicrobials likely have synergistic antimicrobial properties. The experimental evidence also supports the morphological stability and long-term antimicrobial effect of the AgCl/BAC nanoantimicrobials.
ACS APPLIED BIO MATERIALS
(2022)
