Article
Chemistry, Physical
Ruixue Zhang, Yan Chen, Muhua Ding, Jie Zhao
Summary: This review provides a comprehensive summary of seminal heterogenized Cu-catalyzed homogenous catalysis reported over the last decade, highlighting the potential and synthetic perspectives of heterogeneous copper catalysis in both academic and industry.
Article
Chemistry, Organic
Giuseppe Gentile, Miriam Marchi, Michele Melchionna, Paolo Fornasiero, Maurizio Prato, Giacomo Filippini
Summary: Dual photocatalysis has become popular for functionalizing organic substrates under mild conditions. Single-atom heterogeneous catalysts (SACs) with carbon nitride-based supports have emerged as a frontier in this research field. This Concept highlights recent advances and applications of carbon nitride-based SACs in light-driven dual-catalytic processes, as well as future opportunities.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Yitao Wu, Qi Li, Jiajun Cao, Yang Liu, Zeju Wang, Liqing Shangguan, Huangtianzhi Zhu
Summary: Inspired by natural cross-linking and biomineralization processes, a pillararenepeptide nanogel is constructed as a platform for biomimetic mineralization and heterogeneous catalysis. The nanogel, with a spherical morphology and high stability, immobilizes Pt species via biomimetic mineralization to form a hybrid material with abundant Pt nanoparticles. This hybrid material is utilized in heterogeneous catalysis for the reduction of nitroaromatic compounds, demonstrating excellent recyclability in at least ten runs without changes in morphology or activity. By applying bioinspired methods in pillararene chemistry, this work may provide insight into designing functional nanomaterials.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Fengjuan Qin, Wenxing Chen
Summary: Single-atom alloy (SAA) catalysts play an important role in heterogeneous catalysis, with wide applications and outstanding performance in improving atom utilization and catalytic selectivity. Research progress on copper-based single-atom alloys is promising and shows potential applications in various catalytic reactions.
CHEMICAL COMMUNICATIONS
(2021)
Article
Environmental Sciences
Neeraj Kumar, Eric Gismondi, Kotha Sammi Reddy
Summary: This study assessed the toxicological effects of copper and copper nanoparticles on Pangasianodon hypophthalmus. The researchers found that elevated concentrations of copper and copper nanoparticles induce toxicity and disrupt cellular metabolic activities in fish.
ENVIRONMENTAL TOXICOLOGY
(2023)
Review
Chemistry, Physical
Mahnaz Najafi
Summary: Chiral and bi/multifunctional catalysts play important roles in sustainable organic transformations. Polyoxometalates (POMs) have great potential in asymmetric and one-pot tandem reactions due to their diverse structures, good redox properties, and oxidation abilities. However, the solubility of POM catalysts in many solvents limits their applications. To overcome this issue, researchers have proposed the combination of POMs with organic units to generate POM-based inorganic-organic hybrid materials with unique structural characteristics, serving as heterogeneous catalysts for asymmetric and one-pot tandem reactions.
Article
Chemistry, Multidisciplinary
Le Dung Pham, Red O. Smith-Sweetser, Briana Krupinsky, Carolyn E. Dewey, Jessica R. Lamb
Summary: This study demonstrates that NHC-CDI adducts can be used as masked precursors for switchable organocatalysis, and the CDI substituents can control the reaction profile without changing the NHC structure. By controlling the electronic variations and perturbations on the CDI, the catalytically active temperature and catalyst release range can be controlled.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Inorganic & Nuclear
Aleksandra Scigala, Edward Szlyka, Liliana Dobrzanska, Duncan H. Gregory, Robert Szczesny
Summary: This review summarizes the current knowledge on the chemistry of binary copper(I) nitride, Cu3N and its multinary derivatives, and discusses various synthesis methods and potential applications, with a particular focus on the importance of chemical synthetic methods in semiconductor preparation and the discovery of related compounds.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Polymer Science
Md. Eyazul Haque, Md. Wahab Khan, Mohammad Mahamodul Hasan, Md. Najmul Kabir Chowdhury
Summary: By impregnating copper nanoparticles into Swietenia mahagoni sawdust, novel nanocomposites with improved mechanical properties, antifungal activity, and durability have been developed, showing potential as alternatives to wood in various industries.
Article
Chemistry, Organic
Hang Xu, Sho Yamaguchi, Takato Mitsudome, Tomoo Mizugaki
Summary: A copper-catalyzed system using copper nitride nanocubes as catalysts has been developed for the protosilylation reaction of unsaturated compounds. This method allows for the efficient production of organosilanes under mild and additive-free conditions.
Article
Chemistry, Analytical
David Bahamon-Pinzon, Geisianny Moreira, Sherine Obare, Diana Vanegas
Summary: Organophosphorus pesticides are commonly used in industrial agriculture and can lead to water pollution and negative effects on ecosystems and communities. A facile electrochemical sensor has been developed for detecting these pesticide residues in water sources, especially in developing countries where standard laboratory methods are expensive. The sensor showed high sensitivity and a promising potential for environmental monitoring of organophosphorus pesticide residues.
Article
Chemistry, Physical
Mohamed A. El-Atawy, Khaled D. Khalil, Ali H. Bashal
Summary: The article introduces the successful synthesis of chitosan copper oxide nanocomposite using the solution casting method under microwave irradiation, and various analyses and characterizations were conducted. The study shows that this nanocomposite exhibits efficient catalytic activity in nitroolefin synthesis reactions, with advantages such as high yields, short reaction times, and reusability.
Article
Chemistry, Multidisciplinary
Nhat Linh Duong, Van Minh Nguyen, Thi A. Ni Tran, Thi Diem Trinh Phan, Thi Bao Yen Tran, Ba Long Do, Nguyen Phung Anh, Thi Anh Thu Nguyen, Thanh Gia-Thien Ho, Tri Nguyen
Summary: This study proposes a method for the synthesis of fungicides using durian shell extract as a reducing agent to synthesize copper and Cu2O nanoparticles. The extraction of sugar and polyphenols from durian shell extract was optimized, and the green-synthesized Cu/Cu2O nanocomposites exhibited excellent antifungal efficacy against plant pathogenic fungi.
Article
Nanoscience & Nanotechnology
Noelia Losada-Garcia, Ana Jimenez-Alesanco, Adrian Velazquez-Campoy, Olga Abian, Jose M. Palomo
Summary: Artificial copper metalloenzymes were created by generating copper nanoparticles in an enzyme matrix, with different enzymes influencing the size and surrounding environment of the nanoparticles. These copper nanozymes exhibit a unique enzymatic activity different from the natural enzyme activity, with their catalytic activities modulated by the enzyme scaffold.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Mickael Henrion, Yorck Mohr, Kwinten Janssens, Simon Smolders, Aram L. Bugaev, Oleg A. Usoltsev, Elsje Alessandra Quadrelli, Florian M. Wisser, Dirk E. De Vos, Jerome Canivet
Summary: New catechol-based porous polymers were synthesized and used as platforms for the heterogenization of molecular Cu complexes. The resulting Cu@CatMP-1 materials proved to be highly stable and performing catalysts with turnover numbers up to 6000, about 1 to 2 orders of magnitude higher than the current relevant state of the art. The solid catalyst showed recyclability for over 10 runs without metal leaching and has been scaled to the gram scale. The coordination of Cu to catechol within the polymer has been confirmed by X-ray absorption spectroscopy.
Article
Chemistry, Physical
Maria del Rosario Silva Campos, Carsten Blawert, Nico Scharnagl, Michael Stoermer, Mikhail L. Zheludkevich
Summary: In this study, a screening of Al-X alloys was conducted to find environmentally friendly alternatives to replace Cd for corrosion protection of steel. Promising Al-based sacrificial alloys were identified and suitable heat treatments were implemented to improve their corrosion properties. Extensive evaluation in NaCl solution identified the most promising alloys for efficient cathodic protection of steel, avoiding Al passivation.
Article
Metallurgy & Metallurgical Engineering
Tatsiana Shulha, M. Serdechnova, M. H. Iuzviuk, I. A. Zobkalo, P. Karlova, N. Scharnagl, D. C. F. Wieland, S. Lamaka, A. A. Yaremchenko, C. Blawert, M. L. Zheludkevich
Summary: This study reports the possibility of directly synthesizing layered double hydroxide (LDH) on AZ91 surface in the presence of chelating agent DTPA. The obtained LDH was characterized using experimental and computational methods, and a comparison of three possible LDHs was performed. The results confirmed the growth of mixed LDH-OH/CO3 on the surface in the presence of DTPA pentasodium salt.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Green & Sustainable Science & Technology
Ivo F. Teixeira, Nadezda Tarakina, Ingrid F. Silva, Nieves Lopez-Salas, Aleksandr Savateev, Markus Antonietti
Summary: This study experimentally verified the influence of water-dissolved alkali cations on carbon nitride-based catalysts in the hydrogen evolution reaction (HER). The presence of hydrated alkali cations can enhance the electron transfer efficiency and thus promote the H-2 evolution rate in highly optimized semiconductor structures.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Engineering, Chemical
Zhenzhen Zhang, Md. Mushfequr Rahman, Barbara Bajer, Nico Scharnagl, Volker Abetz
Summary: In this study, a series of porous membranes with different effective pore sizes were successfully prepared using a membrane post-modification technique. The excellent separation performance was demonstrated by separating organic molecules of 1-2 nm in size.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Organic
Tobias E. Schirmer, Mehdi Abdellaoui, Aleksandr Savateev, Cyril Ollivier, Markus Antonietti, Louis Fensterbank, Burkhard Konig
Summary: Mesoporous graphitic carbon nitride (mpg-CN) is used as a photocatalyst for dual photoredox- and nickel-catalyzed cross-coupling reactions, enabling sustainable C(sp(2))-C(sp(3)) bond formation.
Article
Nanoscience & Nanotechnology
Julya Stein Siena, Corinna Kaspar, Markus Antonietti, Wolfram H. P. Pernice
Summary: Organic semiconductors have been widely used in integrated photonics due to their appealing material properties and ease of fabrication. Polymeric carbon nitride thin films, as a valuable alternative to inorganic materials, offer structural flexibility, transparency over a wide wavelength range, and accessible synthesis. This study demonstrates the application of organic polymeric carbon nitride-based nanophotonic devices for telecommunication wavelengths, achieving small device footprint, strong mode confinement, and efficient fiber-to-chip coupling.
Article
Chemistry, Physical
Sergey Perevoznikov, Ludmila Tsybulskaya, Vladislav Shendyukov, Nico Scharnagl
Summary: A new method of preparing light absorbing coatings based on electrodeposited nickel-phosphorus coatings has been proposed. By modifying the electrolyte, an ultrablack surface with a low reflectance coefficient can be achieved. The chemical composition and formation mechanism of both surfaces have been studied. It has been found that etching in nitric acid leads to oxidation and the formation of a needle-like microstructure. The light absorbance ability of the coatings is caused by the distribution of fine nickel-phosphorus particles in a dielectric matrix and the specific microstructure of their surfaces.
SURFACES AND INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Andrea Rogolino, Ingrid F. Silva, Nadezda V. Tarakina, Marcos A. R. da Silva, Guilherme F. S. R. Rocha, Markus Antonietti, Ivo F. Teixeira
Summary: This study reveals that functionalized poly(heptazine imides) (PHIs) and fully protonated PHIs have high photocatalytic activity for efficient production of H2O2 under visible light. Functionalization with transition metals is not beneficial for H2O2 synthesis and may catalyze its decomposition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Bertram Schulze Lammers, Nieves Lopez-Salas, Julya Stein Siena, Hossein Mirhosseini, Damla Yesilpinar, Julian Heske, Thomas D. Ku, Harald Fuchs, Markus Antonietti, Harry Moenig, Harry Moenig
Summary: In this study, the reacted layers of non-noble metal-organic compounds on a copper substrate were characterized using nc-AFM, XPS, and ab initio simulations. The dehydrogenation process and strong chemisorption of the molecular units on the copper substrate were observed. The interaction between nitrogen and copper atoms played a significant role in catalyzing the oxygen reduction reaction. The combination of atomic-scale characterization and electrochemical performance provided fundamental insights into the active sites of this technologically relevant reaction.
Article
Polymer Science
Baris Kumru, Markus Antonietti
Summary: Iodine transfer polymerization (ITP) is a controlled radical polymerization method with widespread applicability, characterized by simplicity, low toxicity, metal-free nature, no coloring, and ease of purification.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Zhihao Chen, Xianliang Li, Bin Gong, Nico Scharnagl, Mikhail L. Zheludkevich, Hanjie Ying, Wenzhong Yang
Summary: We have fabricated double stimuli-responsive PPy nanocapsules and incorporated them into a corrosion-resistant epoxy coating for protecting Fe-based metal substrates. The nanocapsules respond to pH and redox stimuli, controlling the release of corrosion inhibitors and inhibiting corrosion reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biophysics
Nils Burmeister, Christel Vollstedt, Cathrin Kroeger, Timo Friedrich, Nico Scharnagl, Marcus Rohnke, Eilika Zorn, Sebastian G. Wicha, Wolfgang R. Streit, Wolfgang Maison
Summary: Zwitterionic polymer brushes were successfully grafted from bulk polyethylene via air plasma activation and radical polymerization. The resulting layers showed a low contact angle and a high density of solvent accessible zwitterions. Antifouling properties were confirmed through bacterial adhesion tests and seawater tests.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Chemistry, Applied
Flavio de Sousa Santos, Almir Spinelli, Nico Scharnagl, Thiago Ferreira da Conceicao
Summary: This study investigated the properties of pectin coatings crosslinked with Ba2+ or Ca2+ ions on AZ31 magnesium alloy, and found that the coatings crosslinked with Ba2+ exhibited better swelling resistance and corrosion protection. These results indicate that pectin is a suitable polymer for preparing efficient, sustainable, and biodegradable coatings for magnesium alloys.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Physical
Liyuan Liu, Hannes Zschiesche, Markus Antonietti, Barbara Daffos, Nadezda V. Tarakina, Mathieu Gibilaro, Pierre Chamelot, Laurent Massot, Benjamin Duployer, Pierre-Louis Taberna, Patrice Simon
Summary: The unique properties of 2D MXenes, such as metal-like electrical conductivity and versatile surface chemistry, make them attractive for various applications, including energy storage. In this study, O-free, Cl-terminated MXenes were synthesized via a molten salt etching route and then the surface termination was changed from Cl to N through post-thermal treatment. The modified MXenes showed unique electrochemical characteristics and achieved high-performance electrodes for energy storage.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bradley D. Frank, Markus Antonietti, Paolo Giusto, Lukas Zeininger
Summary: This study presents a simple strategy to control chemical gradients in solutions using local photo-electric surface charging of organic semiconducting thin films. By irradiating carbon nitride thin films with ultra-violet light, sustained surface charges are generated in illuminated regions, inducing chemical gradients in adjacent solutions. Experimental measurements show that these gradients respond to changes in temperature, chemistry, and concentration.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
