Article
Multidisciplinary Sciences
Zahra Moradi, Arash Ghorbani-Choghamarani
Summary: A new type of mesoporous material based on KIT-6 has been introduced in this study, which combines magnetic Fe3O4 nanoparticles and mesoporous silica KIT-6 to obtain magnetic mesoporous MNPs. This magnetic mesoporous catalyst has been successfully applied in various carbon-carbon cross-coupling reactions and characterized by different techniques.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Inorganic & Nuclear
Marc Renom Carrasco, Walid Khodja, Clement Demarcy, Laurent Veyre, Clement Camp, Chloe Thieuleux
Summary: The study presents the development of Pd-supported catalysts for the selective C-3 arylation of free indole, showing that catalysts with isolated surface thiol groups and high Pd loading exhibit the highest activity. By optimizing the design, high catalytic performance with low metal leaching during the reaction can be achieved.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Polymer Science
Yangyang Luo, Mali Xie, Jingxia Zheng, Linjun Shao, Chenze Qi, Yijun Du, Shujing Zhou, Jinjing Li
Summary: A distinctive method for the synthesis of polydopamine functionalized polymeric materials for catalysis and other applications has been developed. Dopamine was incorporated into Pd2+/CPVC composite nanofibers by electrospinning and polymerized at elevated temperature. The resulting nanofibers exhibited uniform and smooth surfaces with high solvent resistance. Palladium nanoparticles confined inside the nanofibers showed excellent catalytic efficiency and could be easily recovered and reused.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Biomaterials
Nahida Rasool, Deepa Negi, Yashveer Singh
Summary: Osteoporosis is a chronic bone disorder characterized by decreased bone mass and increased fracture risk. This study developed thiolated, bioactive mesoporous silica nanoparticles (MSN-SH) with antioxidant and regenerative properties for potential treatment of osteoporosis. MSN-SH exhibited high antioxidant activity, protected cells from reactive oxygen species-induced damage, and induced osteogenesis. It also inhibited osteoclastogenesis, promoted migration of osteoblast cells, and showed potential as a complementary treatment for osteoporosis. The surface modification of MSN-SH offers a simple and economical method to enhance its properties and introduce new activities.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Chemistry, Applied
Paulina Szczyglewska, Agnieszka Feliczak-Guzik, Izabela Nowak
Summary: The study aimed to comprehensively analyze the catalytic performance of palladium and platinum catalysts on SBA-16 in hydrodeoxygenation of chemical compounds generated in biomass processing. It found significant differences in catalytic performance between palladium and platinum modified materials, with palladium-modified catalyst allowing for high conversion rates and platinum-modified catalyst showing higher selectivity to compounds without oxygen atoms. The direct impact of process conditions (temperature, pressure) on the HDO process was established and characterized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Mehrnoosh Jalalzadeh-Esfahani, Tahereh Sedaghat, Azizollah Beheshti, Roya Azadi
Summary: A benzimidazole functionalized mesoporous silica nanoparticles immobilized Pd(0)/Pd(II) catalyst has been proposed for the efficient synthesis of biaryls via Suzuki-Miyaura cross-coupling reaction and reduction of nitro-arenes to aromatic amines. The nanocatalyst was characterized and evaluated, showing high efficiency and other advantages such as recyclability, green reaction conditions, and small amounts of catalyst.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Chemistry, Applied
Taiping Gao, Yining Zhao, Yilin Zhou, Zhenlu Kang
Summary: Atomically precise palladium nanoclusters have great potential for catalytic applications due to their ultrasmall size and precise structure. In this study, palladium nanoclusters were successfully immobilized into mesoporous silica nanoparticles for the reduction of 4-nitrophenol and Heck reactions. The results indicated that the immobilized Pd nanoclusters showed excellent catalytic performance, which could be attributed to their large surface area and unique geometric structure.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Farzeen Sakina, Carlos Fernandez-Ruiz, Jorge Bedia, Luisa Gomez-Sainero, Richard T. Baker
Summary: Ordered mesoporous carbon (OMC) was utilized as a support for palladium nanoparticles in catalysts for gas phase hydrodechlorination (HDC) of trichloromethane (TCM), showing excellent dispersion of fine Pd nanoparticles and high selectivity to higher hydrocarbons in two of the catalysts. However, the solid-liquid (SL) method resulted in larger particles and less uniform palladium distribution, leading to lower conversion, selectivity, and more severe catalyst deactivation at higher reaction temperatures.
Article
Energy & Fuels
Fujun Lan, Yu Shu, Huiling Zhang, Dexiang Zhang, Qingxin Guan, Wei Li
Summary: This study presents a confined Cu cluster catalyst by uniformly encapsulating ultrafine Cu nanoclusters in aminofunctionalized nanosized mesoporous silica spheres (NMSSs-NH2), which exhibits excellent hydrogenation performance for biomass-derived levulinic acid (LA) and demonstrates the potential of inexpensive Cu cluster-based catalysts for the production of high-value chemicals from renewable biomass.
Article
Chemistry, Multidisciplinary
Liqiong Liu, Weiliang Han, Fang Dong, Hua Feng, Zhicheng Tang
Summary: Two mesoporous catalysts were constructed for the catalytic combustion of propane, and it was found that the framework-confined Pt/Ti0.1AlOy-EISA catalyst showed better catalytic activity and thermal stability compared to the pore-confined Pt/Ti0.1AlOy-VI catalyst. The framework-confined catalyst had higher Pt dispersion, while the pore-confined catalyst exhibited better water and sulfur resistance due to the protection provided by the pores. In situ DRIFTS experiments suggested the Langmuir Hinshelwood (L-H) mechanism as the possible reaction mechanism.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Petra Herman, Daniel Percsi, Tamas Fodor, Laura Juhasz, Zoltan Dudas, Zsolt E. Horvath, Vasyl Ryukhtin, Ana-Maria Putz, Jozsef Kalmar, Laszlo Almasy
Summary: A simplified sol-gel method was developed to synthesize thiol functionalized porous silica particles, which exhibited highly effective sorption capacity and selectivity towards aqueous Ag(I).
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Chemistry, Physical
Gianluigi Albano, Antonella Petri, Laura Antonella Aronica
Summary: In recent years, there has been extensive research on immobilizing palladium nanoparticles on solid supports for the preparation of active and stable catalytic systems. Compared to inorganic materials, naturally occurring organic solids are more cost-effective and readily available. This review focuses on the application of metal catalysts supported by natural biomaterials in C-C bond formation reactions, specifically Mizoroki-Heck, Suzuki-Miyaura, and Sonogashira reactions. Different types of organic matrices, such as cellulose, starch, pectin, agarose, chitosan, as well as proteins and enzymes, are discussed, highlighting the heterogeneous nature and recyclability of each catalyst.
Article
Chemistry, Multidisciplinary
Nina V. Kuchkina, Svetlana A. Sorokina, Alexey V. Bykov, Mikhail G. Sulman, Lyudmila M. Bronstein, Zinaida B. Shifrina
Summary: The use of PEGylated nanocomposite catalysts has successfully stabilized Pd2+ complexes and Pd nanoparticles, demonstrating excellent catalytic activity in copper-free Sonogashira and Heck cross-coupling reactions. The reactions exhibit high yields in green solvents with low palladium loading and allow for easy magnetic separation and reuse without significant decrease in catalytic activity.
Article
Chemistry, Physical
Yi-Xing Luo, Wendan Nie, Yiyue Ding, Qilu Yao, Gang Feng, Zhang-Hui Lu
Summary: Hydrogen is promising for future sustainable energy systems due to its cleanliness and renewability, while formic acid is considered an efficient hydrogen supplier because of its high hydrogen content and ease of storage and transport. Researchers have successfully developed Pd-ZrO2/SBA-15-NH2 catalyst for the dehydrogenation of formic acid, achieving 100% hydrogen selectivity at ambient conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Environmental Sciences
Fengbin Zhao, Xinyun Yao, Chang Liu, Xianqiang Ran, Chengxian Wang, Bin Lu
Summary: A study prepared MPTMS-OMS/PVDF membrane with high Cd2+ adsorption capacity for purification treatment of low-concentration pollutants in water streams.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Junia Teixeira Martins, Carlos Henrique Guimaraes, Paula Mayara Silva, Rafael L. Oliveira, Patricia Prediger
Summary: The study explored the use of a mixture of high superficial area carbon-based nanomaterials (carbon nitride and graphene oxide) to remove basic blue 26 dye from wastewater. It was found through experiments that the 50/50 mixed nanocomposite material exhibited the best efficiency in dye removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Emily C. Monkcom, Daniel de Bruin, Annemiek J. de Vries, Martin Lutz, Shengfa Ye, Robertus J. M. Klein Gebbink
Summary: This article presents the synthesis and coordination chemistry of a bulky, tripodal N,N,O ligand, Im(Ph2)NNO(tBu), for modeling the 2-His-1-carboxylate facial triad in metal complexes. The ligand demonstrates redox non-innocence, with phenolate oxidation as the first electrochemical response. It provides access to well-defined mononuclear, monoligated metal complexes, enabling accurate structural modeling of the 2H1C to be achieved.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Applied
Eduard Masferrer-Rius, Margarida Borrell, Martin Lutz, Miquel Costas, Robertus J. M. Klein Gebbink
Summary: The use of biologically inspired manganese catalysts with different ligand structures allows for selective oxidation of aromatic C-H bonds under specific solvent conditions. Introducing bulky groups into the ligand plays a key role in preventing catalyst inhibition by phenolate binding and providing higher catalytic turnover numbers.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
Emily C. Monkcom, Hidde A. Negenman, Eduard Masferrer-Rius, Martin Lutz, Shengfa Ye, Eckhard Bill, Robertus J. M. Klein Gebbink
Summary: In this study, two new bioinspired N,N,O phenolate ligands were synthesized and their coordination chemistry with zinc(II) and iron(II) was explored. BenzImNNO readily formed homoleptic bisligated complexes, while the increased steric bulk of Im(Ph2)NNO promoted the formation of dinuclear complexes. The robustness of the ligand's coordination mode was demonstrated during oxidative transformations.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Cody B. van Beek, Nicolaas P. van Leest, Martin Lutz, Sander D. de Vos, Robertus J. M. Klein Gebbink, Bas de Bruin, Daniel L. J. Broere
Summary: This study presents a new dinucleating pincer ligand that enables metal-metal cooperativity and metal-ligand cooperativity, providing important insights and opportunities for catalytic hydrogen evolution reactions.
Article
Chemistry, Physical
Rafael L. Oliveira, Krzysztof Nicinski, Marcin Pisarek, Agnieszka Kaminska, Arne Thomas, Grzegorz Pasternak, Juan C. Colmenares
Summary: This study reports the synthesis and characterization of a group of porous heteroatom-doped carbons as catalysts for the oxidation of primary alcohols. It demonstrates the highest activity of N-doped carbons pyrolyzed at 700 or 800 degrees C and suggests the presence of a non-radical oxidation process.
Article
Engineering, Chemical
Gustavo Rocha Paixao, Natalia Gabriele Camparotto, Giani de Vargas Briao, Rafael de Lima Oliveira, Juan Carlos Colmenares, Patricia Prediger, Melissa Gurgel Adeodato Vieira
Summary: A novel P-doped mesoporous carbon (PMC) was prepared from sucrose using silica nanoparticles as templates. The PMC exhibited a high surface area and pore volume, and showed excellent removal capacity for propranolol in water. The kinetics and mechanism of propranolol adsorption on PMC were investigated, revealing multilayer adsorption and the role of physisorption and chemisorption.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Cody B. van Beek, Lars Killian, Martin Lutz, Markus Weingarth, Arun S. Asundi, Ritimukta Sarangi, Robertus J. M. Klein Gebbink, Daniel L. J. Broere
Summary: This study describes the synthesis, characterization, and catalytic activity of a new class of diruthenium hydrido carbonyl complexes. These complexes exhibit good hydrogenation reactivity and selective semi-hydrogenation ability towards alkynes.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Sander D. de Vos, Maartje Otten, Tim Wissink, Daniel L. J. Broere, Emiel J. M. Hensen, Robertus J. M. Klein Gebbink
Summary: In this study, the electrocatalytic hydrogen evolution performance of [Co(HBMIMPh2)(2)](BF4)(2) was compared to three other molecular cobalt hydrogen evolution reaction catalysts, showing that it performed well in terms of overpotential and Faradaic efficiency. Post-electrolysis X-ray photoelectron spectroscopy analysis revealed a minor cobalt contribution in the deposit formed from the catalyst. These observations indicate that the molecular design of the complexes plays a crucial role in determining the activity of the catalyst.
Article
Chemistry, Multidisciplinary
Rakesh Sen, Shounik Paul, Sriram Krishnamurthy, Anupama Devi, Ethayaraja Mani, R. J. M. Klein Gebbink, Soumyajit Roy
Summary: This study demonstrates with experimental evidence how the emulation of space-time symmetry breaking by electrochemical realization of a Time-Gel' can lead to the creation of matter. Time-Gel' is realized by inducing the gelation phenomenon of discrete molecular precursors, and the temporal information descriptor (Q) exhibits a power-law relationship (Q proportional to Phi(g)^n) with the volume fraction of the gel (Phi(g)). The exponent n is 5, indicating the divergence in matter creation. This finding further supports the understanding that the breaking of symmetry under conditions following Noether's theorem leads to the emergence of matter. In summary, this research proposes the idea of symmetry breaking and presents the electrochemical realization of the Time-Gel' model as an alternative explanation for the creation of matter based on Chemical Science.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Aidin Nejadsalim, Najmeh Bashiri, Hamid Reza Godini, Rafael L. Oliveira, Asma Tufail Shah, Maged F. Bekheet, Arne Thomas, Reinhard Schomaecker, Aleksander Gurlo, Oliver Goerke
Summary: One-dimensional core-sheath nanofibers consisting of platinum-loaded ceria sheath on mesoporous silica core were successfully synthesized and used as catalysts for the reverse water gas shift reaction. The core-sheath nanofibers had a core diameter of 100-300 nm and a sheath thickness of 40-100 nm with a Pt loading of 0.5 wt.%. The impregnated catalyst, Pt-CeO2 NF@mesoporous SiO2, showed the best catalytic performance with a CO2 conversion of 8.9% at 350 degrees C.
Article
Chemistry, Multidisciplinary
Rafael. L. L. Oliveira, Marcin Pisarek, Karolina. A. A. Ledwa, Grzegorz Pasternak, Leszek Kepinski
Summary: This study focuses on the preparation and characterization of porous N-doped carbon derived from chitosan, which serves as a solid support for earth-abundant transition metal oxides. Fe2O3, CoO, NiO, and CuO nanoparticles are loaded onto the support and used as catalysts for the oxidation of primary alcohols using peroxydisulfate or peroxymonosulfate. Quenching tests suggest the presence of a significant contribution from a non-radical oxidation process.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Environmental Sciences
Natalia Gabriele Camparotto, Gustavo Rocha Paixa, Giani de Vargas Briao, Rafael L. Oliveira, Patricia Prediger, Melissa Gurgel Adeodato Vieira
Summary: Mesoporous doped-carbons were synthesized from natural sources sucrose, boric acid, and cyanamide, resulting in B- or N-doped carbon materials. Extensive characterization confirmed the tridimensional doped porous structure of the materials. B-MPC and N-MPC exhibited high specific surface areas above 1000 m(2)/g. Adsorption assays using diclofenac sodium and paracetamol as model pollutants showed removal capacities of 78 and 101 mg.g(-1), respectively. The adsorption process was governed by external and intraparticle diffusion and multilayer formation, attributed to strong adsorbent/adsorbate interactions. Hydrogen bonds and Lewis acid-base interactions were identified as the main attractive forces through DFT-based calculations and experimental assays.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Rafael Lima Oliveira, Karolina A. Ledwa, Olga Chernyayeva, Sebastian Praetz, Christopher Schlesiger, Leszek Kepinski
Summary: A group of doped carbon materials were synthesized using starch as a carbon precursor, and ceria nanoparticles were embedded in these carbon structures to serve as catalysts for imine formation via oxidative coupling. The control of ceria nanoparticle size, presence of Ce3+ cations, and disorder in the ceria nanoparticle structure caused by support-ceria interaction led to an increase in oxygen vacancies and improved catalytic performance.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Pouya Zaree, Ilhan Tomris, Sander D. de Vos, Roosmarijn van der Woude, Frits M. Flesch, Robertus J. M. Klein Gebbink, Robert P. de Vries, Roland J. Pieters
Summary: A miniaturized sensor containing graphene- and gold nanoparticles was functionalized with proteins for electrochemical detection. The interactions between molecules and proteins were observed and quantified using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The protein binders included carbohydrate ligands as small as carbohydrates and COVID-19 spike protein variants engaged in protein-protein interactions.
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
