Article
Environmental Sciences
Mervat F. Zayed, Wael H. Eisa, Badawi Anis
Summary: Garlic peel was used as a solid support material to prepare a cobalt/garlic peel nanocomposite catalyst, which was effective for the catalytic degradation of organic pollutants. This catalyst showed easy recovery and recycling of nanoparticles, leading to reduced treatment costs.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Physical
Carlos Lizandara-Pueyo, Xinyuan Fan, Carles Ayats, Miquel A. Pericas
Summary: This study involved the controlled synthesis of calcium carbonate particles surface-functionalized with azido groups, followed by copper-catalyzed alkyne-azide cycloaddition reactions to prepare novel catalytic materials. The immobilized catalyst demonstrated high selectivity and efficiency in catalyzing Michael addition reactions of aldehydes, with the added advantage of being reusable and adaptable to continuous-flow operation for increased productivity.
JOURNAL OF CATALYSIS
(2021)
Review
Engineering, Environmental
Shuxing Bai, Ankang Jia, Jialu Song, Shuang Cao, Ning Wang, Xia Liu
Summary: This article summarizes the catalytic mechanism of hydrogen production from formic acid decomposition (FAD) using heterogeneous catalysts. It thoroughly discusses the optimization of FAD performance based on metal, support, and treatment, and proposes a rational design and precise construction approach for efficient catalytic structures.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Syed Farooq Adil, Muhammad Ashraf, Mujeeb Khan, Mohamed E. Assal, Mohammed Rafi Shaik, Mufsir Kuniyil, Abdulrahman Al-Warthan, Mohammed Rafiq H. Siddiqui, Wolfgang Tremel, Muhammad Nawaz Tahir
Summary: Graphene-based nanocomposites with inorganic nanoparticles have high catalytic activity and are widely used in chemical transformations. Graphene and its derivatives are excellent support materials for fabricating nanocomposites due to their high surface area and variable functionalities. The ability to adjust the surface composition enhances the versatility of these nanocomposites in catalysis. This review discusses the preparation and catalytic applications of graphene/inorganic nanoparticles based nanocomposites, and highlights the interfacial electronic communication and other factors that contribute to increased catalytic efficiencies.
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, Physical
Tapas Goswami, Sudhanshu Naithani, Amit Kumar, Sushil Kumar
Summary: We have synthesized two easily synthesizable, reusable and morphology-controlled copper nanostructures grafted over rGO. The nanocatalysts with rod-like and spherical nanostructures promoted the one-pot multicomponent click reaction to produce a 1,2,3-triazole derivative with high yield. The nanocomposites with rod-like morphology exhibited significantly higher catalytic activity and could rapidly synthesize the desired product in pure water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Chemistry, Multidisciplinary
Aleksa Kojcnovic, Blaz Likozar, Miha Grilc
Summary: This review article focuses on the heterogeneous catalytic conversion of carbon dioxide (CO2) to various compounds. It discusses the formation of alkyl carbonates, cyclic carbonates, carbamates, and carboxylic acids through carboxylation reactions. The article provides detailed elaboration on reaction conditions, catalysts, activity/selectivity, and comparison of results obtained from recent publications.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Chemical
Gabriel Sperandio, Iterlandes Machado, Esteefany Bernardo, Renata Moreira
Summary: This study successfully synthesized graphene oxide from spent batteries and used it as a catalyst for hydrogen evolution. The material exhibited high efficiency, good reusability, and significance for the utilization of electronic waste and the development of green energy.
Article
Chemistry, Multidisciplinary
Ichiro Yamane, Kota Sato, Ryoichi Otomo, Takashi Yanase, Akira Miura, Taro Nagahama, Yuichi Kamiya, Toshihiro Shimada
Summary: A study on processing Cu-benzenetricarboxylic acid metal-organic framework under ultrahigh pressure and high temperature revealed that the decomposition temperature of the MOF significantly decreased at 5 GPa, resulting in smaller Cu nanoparticles obtained in a carbon matrix. Catalytic activity tests for Huisgen cycloaddition showed that the sample processed at 5 GPa exhibited better performance compared to those prepared without high pressure.
Review
Chemistry, Multidisciplinary
Sebastien Noel, Bastien Leger, Anne Ponchel, Samahe Sadjadi, Eric Monflier
Summary: This review focuses on stabilizing catalytically active metal nanoparticles in cyclodextrin-based systems, where cyclodextrins play multi-functional roles as reducing agents, stabilizing/dispersing agents, and mass transfer promoters. The study also explores the design of more sophisticated catalytic systems with cyclodextrin as a supramolecular host in dynamic equilibrium.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Anupam Singha Roy, Aby Cheruvathoor Poulose, Aristides Bakandritsos, Rajender S. Varma, Michal Otyepka
Summary: 2D carbon materials like graphene derivatives have been explored as catalysts for biodiesel production due to their exceptional properties, but challenges such as irreversible agglomeration, low bulk density, and poor dispersibility in organic solvents limit their applications as catalysts or heterogeneous catalysts support.
APPLIED MATERIALS TODAY
(2021)
Article
Multidisciplinary Sciences
Zhaofei Zhang, Yangsen Xu, Qitao Zhang, Shaofan Fang, Hongli Sun, Wei Ou, Chenliang Su
Summary: A combination of copper catalysis and semiconductor photocatalysis using polymeric carbon nitride (PCN) was developed for multi-type cross-coupling reactions. This dual-catalytic system enables mild C-H arylation, chalcogenation, and C-N cross-coupling reactions under visible light irradiation with a broad substrate scope. The metal-free and low-cost PCN photocatalyst can be easily recovered and reused multiple times, showing good yields and functional group tolerance.
Article
Engineering, Chemical
Samuel Eshorame Sanni, Olowoyeye Philemon, Emeka Emmanuel Okoro, Babalola Aisosa Oni, Tijani A. Idowu, Oluwatosin Adegbite
Summary: Hydroconversion of 4-Chlorophenol was induced by atomic hydrogen substitution and polydisperse cobalt nanoparticles, resulting in enhanced reaction performance. The addition of NaOH as a proton scavenger effectively prevented catalyst deactivation. The 2 M polydisperse-cobalt nanoparticles showed the best performance with a k(eqd) value of 0.079, indicating successful desorption mechanism.
CHEMICAL ENGINEERING SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Ana Sousa-Castillo, Andrea Marino-Lopez, Begona Puertolas, Miguel A. Correa-Duarte
Summary: Bioorthogonal chemistry has provided a powerful tool for performing biocompatible chemospecific reactions in living systems, particularly in the areas of genetic encoding systems, bioimaging, and cancer therapy. This Minireview focuses on recent advances in the use of heterogeneous catalysts for bioorthogonal reactions, discussing the synthetic strategies of Pd-, Au-, and Cu-based materials, their applications in activating caged fluorophores and prodrugs, and the potential of using external stimuli for targeted drug release in diseased tissues. The review also highlights future directions and challenges in this emerging field.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
P. Z. Sun, W. Q. Xiong, A. Bera, I. Timokhin, Z. F. Wu, A. Mishchenko, M. C. Sellers, B. L. Liu, H. M. Cheng, E. Janzen, J. H. Edgar, I. V. Grigorieva, S. J. Yuan, A. K. Geim
Summary: Defect-free monolayer graphene shows unexpected catalytic activity in splitting molecular hydrogen, attributed to surface nanoripples. This finding may have implications for other chemical reactions involving graphene and is important for two-dimensional materials in general.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Chemistry, Multidisciplinary
Yong Peng, Soheila Sanati, Ali Morsali, Hermenegildo Garcia
Summary: Transition metal complexes are well-known as homogeneous electrocatalysts, and metal-organic frameworks (MOFs) can be considered as ordered ensembles of these complexes. MOFs have additional positive features for electrocatalysis, such as large surface area, high porosity, and high content of accessible transition metal with exchangeable coordination positions. This review focuses on the use of MOFs as electrocatalysts, both as hosts for electroactive guests and for their direct electrocatalytic activity, with a special emphasis on bimetallic MOFs. Strategies to overcome their poor electrical conductivity and limited stability are also discussed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Alberto Garcia-Baldovi, Raquel Del Angel, Georges Mouchaham, Shanping Liu, Dong Fan, Guillaume Maurin, Sergio Navalon, Christian Serre, Hermenegildo Garcia
Summary: This study reports a new paradigm in MOF photocatalysis using a microporous titanium oxocluster based metal-organic framework (Ti-MOF) with formate-imprinted active sites, MIP-177-LT, as a highly efficient photocatalyst for H-2 release from formic acid without the need for neutralization of acidity or the use of sacrificial agents or noble metals. Notably, a quantum efficiency of 22% has been determined for the photocatalytic H-2 release, which is highly remarkable for a non-toxic noble metal-free photocatalyst.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Soheila Sanati, Ali Morsali, Hermenegildo Garcia
Summary: This study introduces a new core-shell-structured bifunctional electrocatalyst, NU-1000/CuCo2S4, for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting. The nanocomposite exhibits rich porosity, high electrical conductivity, high stability, and a higher density of active sites. It achieves water electrolysis in a 1 M KOH solution with overpotentials of 335 mV for OER and 93 mV for HER at a current density of 10 mAcm-2. The long-term stability test shows significant stability in a 72 h run. Additionally, it requires 1.55 V to deliver 10 mA cm-2 current density in overall water splitting. Consequently, this electrocatalyst holds potential for producing oxygen and hydrogen from water.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Applied
Kayhaneh Berijani, Ali Morsali, Hermenegildo Garcia
Summary: Metal-organic frameworks (MOFs) are a type of porous materials with diverse applications. Recently, there has been increasing interest in synthesizing MOFs with multimodal pores, which can enhance the performance of MOFs in different applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sara Oudi, Ali Reza Oveisi, Saba Daliran, Mostafa Khajeh, Amarajothi Dhakshinamoorthy, Hermenegildo Garcia
Summary: Researchers designed and synthesized a porphyrin-based covalent organic framework (COF) called Porph-UOZ-COF. The COF exhibited outstanding catalytic performance under visible-light, without the need for additives or metals, and could be reused. This study demonstrates the potential of COFs as metal-free catalysts for tandem reactions.
Article
Chemistry, Physical
Alberto Garcia-Baldovi, Lu Peng, Amarajothi Dhakshinamoorthy, Abdullah M. Asiri, Ana Primo, Hermenegildo Garcia
Summary: Ni nanoparticles (approximate to 8 nm) strongly grafted on N-doped graphitic carbon matrix, supported by chitosan, were used as catalyst for H2 storage/release on N-ethylcarbazole (EC). The addition of minute amounts (18 ppm) of Pt significantly increased the H2 storage/release activity of Ni@(N)C due to effect of Pt promoting H spill over the Ni NPs. After four cycles, (Pt)Ni@(N)C exhibited some fatigue in the H2 storage/release of the same EC batch, but no changes were observed in the XRD, TEM and XPS characterization of the catalyst.
CATALYSIS COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Marieme Kacem, Nadia Katir, Abdellatif Essoumhi, Mohammed Sajieddine, Abdelkrim El Kadib
Summary: Tunable manufacturing using flexible building blocks allows for the long-term stabilization of small-sized nanomaterials, such as iron oxide nanoparticles, which possess inherent magnetic properties. The aggregation of iron oxide poses a challenge that can be overcome through various approaches including hosting in porous supports or shelling with tunable partners. In this study, we demonstrate the controlled growth of iron oxide using specific sol-gel transformable precursors, resulting in unique features compared to native iron oxide and conventional silica supports. The resulting mixed oxide materials, Fe3O4@OMSiO2 and Fe3O4@PMSiO2, exhibit restricted growth and enhanced solubility in organic solvents, illustrating their hydrophobic nature.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ruben Ramirez, Arianna Melillo, Silvio Osella, Abdullah M. Asiri, Hermenegildo Garcia, Ana Primo
Summary: A general method is reported to prepare MXene quantum dots (MxQDs) with yields over 20% by liquid-phase laser ablation of the MAX phase. Mechanical and thermal shock by 532 nm laser pulses produces MAX etching and exfoliation to form MXene QDs, avoiding the use of HF. The method is applied to various MAX phases and the MXene size reduction to the nanometric scale allows for control of the band gap. The MXene QDs show high photocatalytic activity for hydrogen evolution.
Article
Chemistry, Physical
Jokotadeola A. Odutola, Horatiu Szalad, Josep Albero, Hermenegildo Garcia, Nikolai V. Tkachenko
Summary: New insights into the improved photo(electro)catalytic activity of graphene by heteroatom doping were explored. N-doped graphene exhibited stronger absorption signals, longer response lifetime, and different dielectric function spectra compared to undoped graphene, which was attributed to electron trapping at doping centers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Shan Dai, Eva Montero-Lanzuela, Antoine Tissot, Herme G. G. Baldovi, Hermenegildo Garcia, Sergio Navalon, Christian Serre
Summary: In this study, the researchers reported for the first time the efficient synthesis of highly redox active Ce(iv)-MOFs through room temperature synthesis. These Ce(iv)-MOFs showed excellent photocatalytic activities in hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), and Ce-UiO-66-NH2 combined with supported Pt NPs exhibited the highest activity in overall water splitting under simulated sunlight irradiation due to efficient photoinduced charge separation.
Article
Materials Science, Multidisciplinary
Marco Serra, Nikolas Antonatos, Jan Luxa, Luc Lajaunie, Josep Albero, Agata Sabik, Wojciech M. Linhart, Hermenegildo Garcia, Robert Kudrawiec, David Sedmidubsky, Zdenek Sofer
Summary: A NiGa2S4 photodetector was prepared and its photoresponse behavior in different electrolyte solutions was investigated. The results showed that ethanol, as an electron donor, significantly improved the performance of the photodetector and expanded its spectral response range. The dynamics of photogenerated electrons and holes were studied, and the stability of the fueled PEC photodetector was evaluated through long-term tests. This work provides fundamental insight into PEC semiconductor-based photodetectors and offers an extendable strategy for engineering high-performance PEC devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Nisrine Hammi, Mickaele Bonneau, Abdelkrim El Kadib, Susumu Kitagawa, Thierry Loiseau, Christophe Volkringer, Sebastien Royer, Jeremy Dhainaut
Summary: This study investigates the use of chitosan hydrogel microspheres as a template for growing an extended network of MOF-type HKUST-1. Different drying methods (supercritical CO2, freeze-drying, and vacuum drying) were used to generate three-dimensional polysaccharide nanofibrils embedding MOF nanoclusters. The resulting HKUST-1@Chitosan beads exhibit uniform and stable loadings of HKUST-1 and were used for the adsorption of CO2, CH4, Xe, and Kr. The maximum adsorption capacity of CO2 was found to be 1.98 mmol center dot g(-1) at 298 K and 1 bar, which is significantly higher than those of most MOF-based composite materials. Based on Henry's constants, thus-prepared HKUST-1@CS beads also exhibit fair selectivity for CO2 over CH4 and Xe over Kr, making them promising candidates for capture and separation applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Nisrine Hammi, Marta Kedzierska, Natalia Wronska, Nadia Katir, Jeremy Dhainaut, Sebastien Royer, Katarzyna Lisowska, Maria Bryszewska, Katarzyna Milowska, Abdelkrim El Kadib
Summary: Evaporation-induced co-assembly of boron nitride-exfoliated chitosan hydrogel provides micrometer-thick boron nitride-filled chitosan nanocomposite films. Increasing the loading of boron nitride improves the wettability, mechanical and thermal properties of the films, as well as the antibacterial properties, making them potential metal-free, antibacterial surface coating materials.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Nisrine Hammi, Marta Kedzierska, Natalia Wronska, Nadia Katir, Jeremy Dhainaut, Sebastien Royer, Katarzyna Lisowska, Maria Bryszewska, Katarzyna Milowska, Abdelkrim El Kadib
Summary: Evaporation-induced co-assembly of boron nitride-exfoliated chitosan hydrogel provides micrometer-thick boron nitride-filled chitosan nanocomposite films with improved mechanical and thermal properties, as well as enhanced antibacterial performance.
MATERIALS ADVANCES
(2023)
