Article
Chemistry, Multidisciplinary
Himani Narjinari, Sunil Dhole, Akshai Kumar
Summary: This study reports the dehydrogenation of glycerol to lactic acid using the base metal salt CoCl2 as a catalyst under both acceptorless and transfer dehydrogenation conditions. The results show that this catalyst can efficiently and selectively produce lactic acid from glycerol, with acetone serving as a sacrificial hydrogen acceptor playing a crucial role in the reaction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yifan Yan, Hua Zhou, Si-Min Xu, Jiangrong Yang, Pengjie Hao, Xi Cai, Yue Ren, Ming Xu, Xianggui Kong, Mingfei Shao, Zhenhua Li, Haohong Duan
Summary: The electrocatalytic strategy using Au/Ni(OH)2 catalyst successfully converts glycerol to lactic acid and polyethylene terephthalate waste to glycolic acid, both valuable monomers for biodegradable polymer production. The high selectivities and current densities achieved reveal the potential of this approach for upcycling biomass and plastic wastes to valuable chemicals and fuels.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
J. Molina, A. Valero-Gomez, F. Bosch
Summary: A thermal method for the synthesis and fixation of Pt nanoparticles on carbon paper is proposed in this paper. The method involves coating the carbon paper with H2PtCl6 and decomposing it into Pt nanoparticles at a temperature of 600 degrees C. The formed Pt nanoparticles are able to oxidize the surrounding carbon fiber surface, promoting the generation of nano-roughness and favoring their fixation on carbon paper. The proposed method offers the advantage of achieving small size nanoparticles and enhanced fixation when compared with electrochemical synthesis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Sebastian Torres, Ruben Palacio, Diana Lopez
Summary: The study demonstrated the significant influence of the CeO2 support on the activity and selectivity of cobalt-based catalysts, with Co3O4/CeO2 catalyst showing a higher selectivity towards lactic acid due to the lower exposure of cobalt species on its surface enriched in Co3+ ions.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Biochemistry & Molecular Biology
Nathaniel Hurley, Luyao Li, Christopher Koenigsmann, Stanislaus S. Wong
Summary: Researchers synthesized a series of 3D hierarchical metal oxide spherical motifs and explored their performance as catalysts for the methanol oxidation reaction. They found that the MOR activity of perovskite materials increases with decreasing ionic radius of the A-site cation, with 3D spherical motifs exhibiting enhanced catalytic activity compared to ultra-small or cubic control samples. Additionally, the Pt/CTO sample showed improved mass and specific activity values, as well as greater stability and durability compared to commercial TiO2 nanoparticle standards and precursor TiO2 templates.
Article
Pharmacology & Pharmacy
Kostas Tsachouridis, Evi Christodoulou, Alexandra Zamboulis, Anna Michopoulou, Panagiotis Barmpalexis, Dimitrios N. Bikiaris
Summary: The present study evaluates the use of novel copolymers for the preparation of paclitaxel loaded nanoparticles. The copolymers showed good enzymatic hydrolysis and low cytotoxicity, making them suitable drug matrix/carriers. The prepared nanoparticles exhibited small size, good drug loading and encapsulation efficiency. In vitro dissolution analysis showed biphasic drug dissolution profiles.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Xiaomei Ning, Xiaosong Zhou, Jin Luo, Liang Zhan
Summary: The modification of Pt by Bi led to significantly improved catalytic performances, especially in the formic acid oxidation (FOR) and glycerol oxidation reactions (GOR). Bi blocked certain sites of Pt, limiting the formation of toxic products and intermediates, and improving the selectivity of dehydrogenation process and glyceric acid. Additionally, the introduction of Bi enhanced the electron enrichment of Pt and increased bismuth hydroxide, favoring electro-oxidation catalytic performances.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Maximilian R. Bailey, Tobias A. Gmur, Fabio Grillo, Lucio Isa
Summary: In this study, a multifunctional polymer-bridge-based approach was used to attach a wide range of pre-synthesized nanoparticles onto microparticle supports. The researchers also demonstrated the creation of composite films of metal and metal-oxide nanoparticles through different chemistries. This method has significant implications for the development of new materials and applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Ashfaq Ahmad, Israa Othman, K. Rambabu, G. Bharath, Hanifa Taher, Shadi W. Hasan, Fawzi Banat
Summary: The study investigated the role of nano-metal oxides in improving lactic acid (LA) production from food waste and compared the conversion of L-LA to PLA using conventional and novel catalysts. Iron oxide nanoparticles showed the highest enhancement for L-LA production, while high dosages of metal oxide nanoparticles decreased LA production. A new nanocatalyst, iron phosphate, produced higher yields of lactide in a shorter reaction time compared to the conventional tin chloride catalyst.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Physical
Xiaomei Ning, Liang Zhan, Xiaosong Zhou, Jin Luo, Yanli Wang
Summary: The addition of Bi3+ into the reaction solution dramatically improved the performances of glycerol electro-oxidation reaction (GOR) and formic acid electro-oxidation reaction (FAOR) catalyzed by Pt catalyst. The Bi-modified Pt exhibited enhanced resistance to CO poisoning, increased mass-specific activities and electrochemical active surface area (ECSA)-specific activity, as well as improved dehydrogenation process and electron pathway in FAOR and GOR, respectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Applied
Carlos Bornes, Isabel C. M. S. Santos-Vieira, Ricardo Vieira, Luis Mafra, Mario M. Q. Simoes, Joao Rocha
Summary: The need for CO2 emissions reduction and energy cost reduction has led to investment in solar and wind technologies. However, these renewable energy sources are not constant and depend heavily on weather conditions. To overcome this limitation, it is necessary to combine electricity production with a stable and low-carbon energy source, and biofuels have emerged as a promising option. However, the over-supply of glycerol poses a challenge. One solution being explored is the conversion of glycerol into value-added products using zeolite-based catalysts.
Article
Chemistry, Multidisciplinary
Wei Wang, Zixin Wang, Mengqi Sun, Hui Zhang, Hui Wang
Summary: Research has shown that by precisely controlling the particle size of nano Pt catalysts, the pathway selection in chemical reactions can be influenced, and may trigger switching between different reaction pathways.
Article
Chemistry, Physical
Jiefei Li, Zhenyu Li, Zexuan Zheng, Xueqiong Zhang, Hao Zhang, Hang Wei, Haibin Chu
Summary: The Pt-CeO2/CNT catalyst promotes the conversion and recycling stability for glycerol electro-oxidation reaction compared with Pt/CNT. By adjusting the ratio of CeO2 and CNT, applied potential, and Pt loading amount, high selectivities of C3 products and glyceric acid are achieved together with high glycerol conversion, leading to impressive yields. The presence of CeO2 not only enhances the catalytic activity and recycling stability, but also inhibits the further oxidation of glyceric acid.
Article
Nanoscience & Nanotechnology
Yifan Yan, Qiangyu Wang, Pengjie Hao, Hua Zhou, Xianggui Kong, Zhenhua Li, Mingfei Shao
Summary: A photoassisted electrocatalytic strategy using a gold nanowire catalyst has been developed to achieve the selective oxidation of glycerol to lactic acid, coupled with hydrogen production. This method demonstrates high current density and lactic acid selectivity, outperforming previous research. It shows potential for efficient conversion of biomass waste in practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biotechnology & Applied Microbiology
Yue Ma, Tianzhen Li, Zijian Tan, Long Ma, Haifeng Liu, Leilei Zhu
Summary: Catalytic valorization of raw glycerol derived from biodiesel into high-value chemicals, such as lactic acid and glycolic acid, has been achieved through chemoenzymatic cascade reactions. The enzymatic step involves a coenzyme recycling system to convert glycerol into 1,3-dihydroxyacetone (DHA) with high yield. Subsequent catalysis by NaOH or NaClO2 results in the formation of lactic acid and glycolic acid with high yields.
BIORESOURCES AND BIOPROCESSING
(2022)
Article
Chemistry, Physical
Werner Oberhauser, Claudio Evangelisti, Laura Capozzoli, Gabriele Manca, Maria Pia Casaletto, Francesco Vizza
Summary: Palladium nanoparticles stabilized by a sterically demanding secondary diamine ligand were synthesized and used for catalyzing the aerobic oxidation of 1,2-propandiol. A selectivity switch induced by water was observed, while the stability of these nanoparticles under real catalytic conditions was demonstrated through recycling experiments and comparison with other types of palladium nanoparticles.
Article
Chemistry, Physical
Gianluigi Albano, Claudio Evangelisti, Laura Antonella Aronica
Summary: Supported palladium nanoparticles showed high catalytic activity and selectivity in cyclocarbonylative reactions, demonstrating the potential for developing green-economy-based processes. The study also indicated that most of the active metal remains on the fiber surface after the reaction.
Editorial Material
Chemistry, Physical
Claudio Evangelisti, Alessandro Mandoli
Review
Geochemistry & Geophysics
Monica Piochi, Barbara Cantucci, Giordano Montegrossi, Gilda Currenti
Summary: The Campi Flegrei geothermal system is located in one of the most famous and hazardous volcanic calderas in the world, with its geothermal dynamics suspected to play a crucial role in monitored unrest phases and eruption triggering. Numerical models have not properly considered the geochemical effects of fluid-rock interaction on hydrothermal circulation, limiting the comprehensive understanding of dynamics.
Article
Chemistry, Physical
Filippo Bossola, Thantip Roongcharoen, Mauro Coduri, Claudio Evangelisti, Ferenc Somodi, Luca Sementa, Alessandro Fortunelli, Vladimiro Dal Santo
Summary: The addition of In as a promoter in a Cu/SiO2 catalyst enhances H-2 productivity by facilitating H2O activation through improved electronic properties of the Cu phase, leading to better interaction with small Cu nanoparticles and silica.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Werner Oberhauser, Marco Frediani, Iman Mohammadi Dehcheshmeh, Claudio Evangelisti, Lorenzo Poggini, Laura Capozzoli, Peyman Najafi Moghadam
Summary: Polymer-supported PdCu alloy nanoparticles with a Pd:Cu atom ratio of 1 were synthesized and applied in the semi-hydrogenation of alkynols, showing high selectivity and mild reaction conditions.
Article
Chemistry, Inorganic & Nuclear
Emanuela Pitzalis, Rinaldo Psaro, Claudio Evangelisti
Summary: The increasing demand for metal catalysts has led to the development of new approaches for highly efficient catalyst synthesis. Metal and organometallic vapor-based synthesis methods offer great control over the morphological and structural features of the supported metal active phase, enabling the design of advanced catalysts and a better understanding of reaction mechanisms at the atomic scale. In this mini-review, recent advances in the synthesis of heterogeneous catalysts using vapors of metal or organometallic complexes as precursors are described, with a focus on atomic layer deposition, cluster beam deposition, and metal vapor synthesis. The catalytic applications and potential of these three approaches are discussed.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jimodo J. Ogada, Adewale K. Ipadeola, Patrick Mwonga, Aderemi B. Haruna, Forrest Nichols, Shaowei Chen, Hamish A. Miller, Maria Pagliaro, Francesco Vizza, John R. Varcoe, Debora Motta Meira, Daniel M. Wamwangi, Kenneth Ozoemena
Summary: This study discussed the preparation and characterization of Pd-based catalysts containing ceria on carbon supports, highlighting the enhanced electrocatalytic properties of Pd-CeO2/OLC for the hydrogen oxidation reaction. The results suggest that Pd-CeO2/OLC could serve as a high-performing and durable anode material for anion-exchange-membrane fuel cells.
Article
Chemistry, Multidisciplinary
Patricia Perez Schmidt, Katiuscia Pagano, Cristina Lenardi, Marta Penconi, Ruth Mateu Ferrando, Claudio Evangelisti, Luigi Lay, Laura Ragona, Marcello Marelli, Laura Polito
Summary: This study presents a simple photo-induced synthesis method for the production of Glyco-UAuNPs using a reliable microfluidic approach at room temperature. The method eliminates the need for chemical reductants, templating agents, or co-solvents and demonstrates good feasibility and stability. Using nuclear magnetic resonance spectroscopy, the study shows a linear correlation between the exposed thiol ligands on the UAuNPs and the ligand concentration in the initial mixture, providing a precise design method for engineered UAuNPs or smart hybrid nano-systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Geochemistry & Geophysics
Masoud Biralvand, Paolo Ballato, Maria Laura Balestrieri, Mohammad Mohajjel, Edward R. Sobel, Istvan Dunkl, Giordano Montegrossi, Mohammad R. Ghassemi, Johannes Glodny, Manfred R. Strecker
Summary: The understanding of geothermal field is critical for interpreting low-temperature thermochronology (LTT) data in magmatic and metallogenic provinces. This study investigates the complex geological and thermal history of the Takab Range Complex in NW Iran, revealing episodes of exhumation, normal faulting, regional subsidence, and erosional exhumation. The data highlight the impact of magmatic reheating on LTT ages in areas affected by intense magmatism.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Werner Oberhauser, Lorenzo Poggini, Laura Capozzoli, Marco Bellini, Jonathan Filippi, Francesco Vizza
Summary: Diamine-capped PtCu nanoparticles were synthesized by reducing the corresponding bis-imine metal complexes with hydrogen and supported onto a high-surface-area carbon. The resulting heterogeneous catalyst exhibited enhanced catalytic activity in the thermally conducted aerobic oxidation of ethanol to acetic acid in water and the electrochemical oxidation of ethanol, compared to pure Pt and Cu counterparts, due to a clear bimetallic effect.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Marcello Marelli, Federica Zaccheria, Nicoletta Ravasio, Emanuela Pitzalis, Youcef Didi, Anne Galarneau, Nicola Scotti, Claudio Evangelisti
Summary: A simple and reproducible method called flow chemisorption hydrolysis (flow-CH) was reported for the synthesis of Cu-based heterogeneous catalysts.The method enabled the synthesis of size-controlled CuO nanoparticles (mean diameter 2.9 nm) that are homogeneously dispersed into meso-/macroporous silica monoliths.The CuO@SiO2-MN catalysts exhibited remarkable activity and high selectivity in the styrene oxide ring opening reaction under continuous flow-through conditions, surpassing the performance of previously reported CuO/SiO2 catalysts.
Review
Chemistry, Physical
Soroosh Saeedi, Xuan Trung Nguyen, Filippo Bossola, Claudio Evangelisti, Vladimiro Dal Santo
Summary: In this review, the performance of Ni-based catalysts supported on Mg(Al)O for SMR and DRM processes is analyzed in-depth. It is found that bimetallic catalysts, with the addition of a small amount of a second metal to Ni, can improve the catalyst durability. Innovative synthesis and pretreatment methods have also shown relevant improvements in enhancing the overall H-2 productivity.
Article
Chemistry, Multidisciplinary
Marta Stucchi, Alessandro Vomeri, Sandor Stichleutner, Karoly Lazar, Emanuela Pitzalis, Claudio Evangelisti, Laura Prati
Summary: Acetone-stabilized Au- and Sn-solvated metal atoms were used to prepare Au and AuSn-supported catalysts, and their morphological and physical properties were studied. It was found that the bare supports played a significant role in the reaction mechanism, and the interaction between Au and Sn could affect the catalytic behavior.
CHEMISTRY-SWITZERLAND
(2023)
