Article
Green & Sustainable Science & Technology
Cristina Gazzurelli, Mauro Carcelli, Paolo P. Mazzeo, Claudio Mucchino, Antonio Pandolfi, Andrea Migliori, Suvi Pietarinen, Giuliano Leonardi, Dominga Rogolino, Paolo Pelagatti
Summary: Lignin, a natural polymer produced in large quantities by the paper industry, has been shown to have potential uses in agriculture. This study presents a sustainable method of synthesizing a hybrid material called Lignin@Cu2O, which consists of Cu2O nanocrystals embedded in lignin. The combination of lignin and cuprite exhibits effective antimicrobial activity against bacteria and plant pathogens at low copper dosage. These findings suggest potential applications of Lignin@Cu2O in plant protection.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Materials Science, Coatings & Films
Anna Brudzisz, Damian Gizinski, Ewa Wierzbicka, Krzysztof Karczewski, Ursa Tiringer, Peyman Taheri, Wojciech J. Stepniowski
Summary: The formation of hemispherical porn-porn-like clusters of nanowires during potentiostatic oxidation of copper in NH4HCO3 was reported. The nanowires, mainly composed of CuO, Cu2O, Cu(OH)(2), and Cu4O3, had a diameter of approximately 50-70 nm, while the clusters had a diameter ranging from 1-3 μm and strongly depended on the applied potential and time of electrooxidation.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Elia Bosch-Rue, Leire Diez-Tercero, Raquel Rodriguez-Gonzalez, Roman A. Perez
Summary: The study developed a scaffold platform for triple ion delivery to potentially stimulate antibacterial, angiogenic, and osteogenic processes. Microspheres consisting of alginate and hydroxyapatite were created with different ratios using a spraying method. Copper, cobalt, and calcium ions were incorporated to modulate antimicrobial and angiogenic processes, with calcium also providing potential osteogenic properties. The therapeutic range of ion release was measured, providing a promising delivery strategy for tissue engineering.
Article
Chemistry, Physical
Guang Han, Shuming Wen, Han Wang, Qicheng Feng
Summary: The research demonstrated that Na2S can enhance the floatability of cuprite. Sulfidization can strengthen the adsorption of xanthate on the cuprite surface, reducing collector consumption. A hydrophobic and stable copper-sulfide film forms on the cuprite surface, confirming that sulfidization improves cuprite flotation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Metallurgy & Metallurgical Engineering
Xiao-dong Jia, Kai-wei Song, Jin-peng Cai, Chao Su, Xiao-hui Xu, Yin-yu Ma, Pei-lun Shen, Dian-wen Liu
Summary: The effect of oxygen and Na2S on the flotation of cuprite was studied using flotation test, FESEM, EMPA and XPS. The results of micro-flotation experiments showed that the addition of an appropriate amount of Na2S greatly increased the flotation recovery of cuprite. FESEM analysis revealed that after sulfidization, numerous fragments were found on the cuprite surfaces, and the shapes of these fragments became more regular and complete with a Na2S concentration of 5.0x10-4 mol/L. EPMA and EDS analysis confirmed that these fragments were newly-formed copper sulfide species, which played a key role in promoting the flotation of cuprite. XPS analysis showed that the sulfidization process of cuprite involved an oxidation-reduction reaction between Na2S and CuO on the surface of cuprite, with Cu2+ being reduced to Cu+ and S2- being mainly oxidized to (S2)2- and (Sn)2-.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Ceramics
Sara Novak, Juliane Resges Orives, Marcelo Nalin, Irem Unalan, Aldo R. Boccaccini, Emerson R. de Camargo
Summary: The biomedical engineering advances in recent years have led to an increased demand for multifunctional biomaterials. This study presents the preparation of SiO2-Na2O-CaO-P2O5 glass-derived powders with homogeneous shapes and sizes, which exhibit good in vitro mineralization and antibacterial properties. These powders could be used to develop multifunctional composites for orthopedic applications.
CERAMICS INTERNATIONAL
(2022)
Article
Infectious Diseases
Verdiana Marchiano, Maria Salvador, Amanda Moyano, Gemma Gutierrez, Maria Matos, Susana Yanez-Vilar, Yolanda Pineiro, Jose Rivas, Jose C. Martinez-Garcia, Davide Peddis, Maria C. Blanco-Lopez, Montserrat Rivas, Nicoletta Ditaranto, Nicola Cioffi
Summary: The study presents a new generation of antimicrobial magnetic nanomaterials, consisting of superparamagnetic iron oxide NPs electrodecorated with antimicrobial copper NPs, allowing for modulation of the release of bioactive species through the application of a magnetic field.
Review
Biochemistry & Molecular Biology
Javiera Ramos-Zuniga, Nicolas Bruna, Jose M. Perez-Donoso
Summary: Copper is a historically used metal to prevent infections and has potential in combating infectious disease outbreaks. Copper nanoparticles and surfaces are common antimicrobial copper-based technologies. The mechanisms explaining their unique antimicrobial properties are not fully understood, but involve membrane rupture, ion accumulation, protein inactivation, and DNA damage. Understanding the toxicity mechanisms of copper nanoparticles and surfaces is important for developing efficient antimicrobial technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Jiaxin Xu, Mohankandhasamy Ramasamy, Teresa Tang, Yi Wang, Weinan Zhao, Kam Chiu Tam
Summary: A robust method to prepare silver nanoclusters (AgNCs) inside a methacrylic acid-ethyl acrylate (MAAEA) nanogel is proposed. The formation of AgNCs and their application in biolabeling and antimicrobial properties were studied. The antimicrobial performance depended on the size and concentration of silver ions (Ag+). The nanogel templated AgNCs showed potential for antimicrobial and biolabeling applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Crystallography
Damian Gizinski, Anna Brudzisz, Mohammad Ramadan Alzahrani, Kuo-Kuang Wang, Wojciech Z. Misiolek, Wojciech J. Stepniowski
Summary: This study investigated copper nanostructuring through anodizing, resulting in the formation of nanowires composed of Cu2O, CuO, Cu(OH)2, and malachite Cu2CO3(OH)2 within a certain voltage range. The diameter of the nanowires depended on the applied voltage. Oscillations in current density at higher voltages indicated partial delamination of the oxidized layer with subsequent self-healing.
Article
Chemistry, Physical
Alaa M. Abd-Elnaiem, Moustafa A. Abdel-Rahim, Atta Y. Abdel-Latief, Ahmed Abdel-Rahim Mohamed, Kristina Mojsilovic, Wojciech Jerzy Stepniowski
Summary: The study investigates the anodization of copper foams in 0.1M K2CO3, resulting in nanostructures that show potential for photocatalytic decolorization. Samples anodized at 25V and 5V exhibited the highest photocatalytic activity. The anodized copper foams have shown to enhance the efficiency of organic dye decomposition.
Article
Biochemistry & Molecular Biology
Anton M. Manakhov, Natalya A. Sitnikova, Alphiya R. Tsygankova, Alexander Yu. Alekseev, Lyubov S. Adamenko, Elizaveta Permyakova, Victor S. Baidyshev, Zakhar I. Popov, Lucie Blahova, Marek Elias, Lenka Zajickova, Anastasiya O. Solovieva
Summary: The study shows the deposition of copper onto nanofibers using magnetron sputtering, thorough characterization, and testing as antibacterial agents, demonstrating its potential value for treatment of bacterial infections.
Article
Chemistry, Inorganic & Nuclear
Yuandi Hu, Pan Ma, Youfa Wang
Summary: In this study, Sr-doped hydroxyapatite microspheres were prepared and berberine hydrochloride was loaded to enhance their osteogenic activity and antibacterial property. The results showed that Sr ions could promote cell differentiation, and a material with good biological properties was successfully constructed.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Veena Wenqing Xu, Mohammed Zahedul Islam Nizami, Iris Xiaoxue Yin, Ollie Yiru Yu, Christie Ying Kei Lung, Chun Hung Chu
Summary: Nanoparticles based on metal and metallic oxides have emerged as a new trend in dental applications. Copper nanoparticles, due to their abundance, low cost, and ability to intermix with other materials, have become commonly used metal nanoparticles in dentistry.
Article
Materials Science, Multidisciplinary
Geyong Guo, Qing Xu, Chongzun Zhu, Jinlong Yu, Qiaojie Wang, Jin Tang, Zhiguang Huan, Hao Shen, Jiang Chang, Xianlong Zhang
Summary: A sequential immunomodulatory strategy using Cu-Zn bi-layer nanofibrous membranes was proposed to address implant-related infections and implant osseointegration disorders, based on the immunological characteristics of these complications. The biomaterial exhibited controlled release of Cu2+ and Zn2+, regulating macrophage phenotype shift and demonstrating anti-infection and osteogenic abilities in vitro and in vivo.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Multidisciplinary
Leanna L. Foster, Michael Hutchison, John R. Scully
Article
Electrochemistry
D. J. Horton, H. Ha, L. L. Foster, H. J. Bindig, J. R. Scully
ELECTROCHIMICA ACTA
(2015)
Article
Materials Science, Multidisciplinary
Leanna L. Foster, Michael Hutchison, John R. Scully
Article
Materials Science, Multidisciplinary
Leanna L. Foster, John R. Scully
Article
Chemistry, Multidisciplinary
Rose K. Cersonsky, Leanna L. Foster, Taeyong Ahn, Ryan J. Hall, Harry L. van der Laan, Timothy F. Scott
JOURNAL OF CHEMICAL EDUCATION
(2017)
Article
Chemistry, Multidisciplinary
Minyu Xiao, Joshua Jasensky, Leanna Foster, Kenichi Kuroda, Zhan Chen
Article
Polymer Science
Christopher J. Wohl, Leanna L. Foster, Samantha I. Applin, John W. Connell
JOURNAL OF APPLIED POLYMER SCIENCE
(2015)
Article
Biochemistry & Molecular Biology
Hamid Mortazavian, Leanna L. Foster, Rajani Bhat, Shyrie Patel, Kenichi Kuroda
Article
Chemistry, Multidisciplinary
Rajani Bhat, Leanna L. Foster, Garima Rani, Satyavani Vemparala, Kenichi Kuroda
Summary: The synthesis of ternary statistical methacrylate copolymers was reported to investigate the role of anionic groups on antimicrobial and hemolytic activities as well as polymer chain conformation. The results showed that anionic carboxylate groups did not have a distinct effect on the antimicrobial and hemolytic activities of the copolymers, but may play a significant role in controlling polymer conformation. This was achieved through formation of salt bridges between cationic and anionic groups, allowing dynamic switching between compact and extended conformations.
Article
Infectious Diseases
Leanna L. Foster, Shin-ichi Yusa, Kenichi Kuroda