ChemCatChemPub Date : 2024-11-19DOI: 10.1002/cctc.202401338
Manju Solra, Sourav Das, Suman Nayak, Abhay Srivastava, Rohit Kapila, Smarak I. Chaudhury, Dr. Subinoy Rana
{"title":"Multivalent Amine Functionalized Carbon Dots Catalyze Efficient Denitrosylation","authors":"Manju Solra, Sourav Das, Suman Nayak, Abhay Srivastava, Rohit Kapila, Smarak I. Chaudhury, Dr. Subinoy Rana","doi":"10.1002/cctc.202401338","DOIUrl":"https://doi.org/10.1002/cctc.202401338","url":null,"abstract":"<p>Nitric oxide (NO) is an essential signaling molecule with several biological functions and holds great promise in biomedical applications. However, NO delivery strategies have been challenged with its inherent short half-life and limited transport distance in human tissues. Strategies focused on the catalytic production of NO at the target site would afford an effective biomaterial. Herein, we introduce a carbon dot (CD) platform featuring multivalent amine groups that catalyze the denitrosylation from <i>S</i>-nitrosothiols. In the present study, we have developed a novel multivalent amine functionalized carbon dots to catalytically transform endogenous prodrugs <i>S</i>-nitrosothiols to generate NO at physiological conditions. The mechanism of NO generation follows a nucleophilic attack of the surface primary amine groups on the electrophilic thiol group of <i>S</i>-nitrosothiols, which is supported by various control studies and electron paramagnetic resonance (EPR). Notably, the release of NO is easily tuned by the prodrug concentration and surface density of amines on the CDs. Significantly, the NO-releasing feature of CDs is integrated with the prototissue module to evaluate the NO release profile in the biological environment. This study will deepen our understanding of designing useful multivalent systems to generate NO from endogenous prodrugs to realize their therapeutic potential.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-19DOI: 10.1002/cctc.202401622
Meng-Qi Sun, Dr. Shi-Jing Zhai, Prof. Dr. Jing Nie, Ying Cheng, Dr. Xiaojuan Deng, Dr. Guosheng Ding, Dr. Dominique Cahard, Prof. Dr. Jun-An Ma, Prof. Dr. Fa-Guang Zhang
{"title":"Allylation, Alkenylation, and Alkynylation of Monofluoromethyl Ketyl Radical Enabled by Photoredox Halogen-Atom-Transfer","authors":"Meng-Qi Sun, Dr. Shi-Jing Zhai, Prof. Dr. Jing Nie, Ying Cheng, Dr. Xiaojuan Deng, Dr. Guosheng Ding, Dr. Dominique Cahard, Prof. Dr. Jun-An Ma, Prof. Dr. Fa-Guang Zhang","doi":"10.1002/cctc.202401622","DOIUrl":"https://doi.org/10.1002/cctc.202401622","url":null,"abstract":"<p>In this study, we disclose an innovative strategy to access α-monofluoromethyl secondary alcohol derivatives under mild blue-light irradiation from brominated fluoroethanol benzoate (BFEB). This reaction takes advantages of bulky silicon radical as a halogen atom transfer (XAT) acceptor to generate the nucleophilic monofluoromethyl ketyl-type radical, which serves as the key intermediate to couple with a series of phenylsulfonyl-masked substrates. A broad scope of allyl, alkenyl (Z and E configurations), and alkynyl α-monofluoromethyl carbinol derivatives were obtained in moderate to good yields.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-19DOI: 10.1002/cctc.202401626
Jason Y. C. Lim
{"title":"Low-Temperature Catalytic Approaches for Upcycling Plastics into Oxygenated Aromatic Compounds","authors":"Jason Y. C. Lim","doi":"10.1002/cctc.202401626","DOIUrl":"https://doi.org/10.1002/cctc.202401626","url":null,"abstract":"<p>Plastic upcycling is an emerging strategy to address the global plastic waste crisis, where these abundant polymers are converted into products of higher economic value. This not only complements and adds to existing recycling efforts, but also offers opportunities to retain the inherent chemical value of the plastics within circular loops, albeit in different forms for alternative uses. With aromatics constituting a major component of current petrochemical production, the production of aromatics from post-synthetic conversion of plastics can potentially alleviate the demand on fossil fuels. Although BTX (benzene, toluene, and xylenes) production has been a major focus of these efforts, oxygenated aromatic compounds (OACs), such as benzoic acids, are also highly-valued across various industrial sectors, and necessitate fundamentally different processes from BTX synthesis from plastics. In this concepts article, some of the most promising emerging methods for direct synthesis of OACs from commodity petroleum-based plastics are spotlighted, including from nonoxygenated hydrocarbon polymers such as polystyrene. With a special emphasis on emerging low temperature technologies (<150 °C), which encompass but are not limited to photo- and biocatalysis, this concepts article aims to position plastics as a viable source of OACs accessible under sustainable conditions for future industrial translations.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Manganese-Modified Metal Nanoparticle Catalysts for Syngas to C2+-Oxygenates","authors":"Jiale Xiao, Haotian Meng, Chengtao Wang, Feng-Shou Xiao","doi":"10.1002/cctc.202401731","DOIUrl":"https://doi.org/10.1002/cctc.202401731","url":null,"abstract":"<p>Syngas to oxygenates, in particular to alcohols containing two or more carbon atoms (i.e., C<sub>2+</sub>-oxygenates), is one of the important research subjects in syngas conversion. The key to this process is the design and synthesis of efficient catalysts. Metal nanoparticle catalysts such as Rh-based and Co-based catalysts in the presence of Mn promoter are popular candidates for the syngas to C<sub>2+</sub>-oxygenates, where the Mn effectively optimizes the dispersion of metal species and significantly influences the C─O dissociation and *CO insertion activity, thereby enhancing the yield of C<sub>2+</sub>-oxygenates. In this review, the mechanism on the formation of C<sub>2+</sub>-oxygenates from syngas was briefly discussed, typical examples were highlighted, design of efficient RhMn-based and CoMn-based catalysts for enhancing the C<sub>2+</sub>-oxygenates yields was summarized, and the perspectives and challenges for catalyst design in this area were suggested.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-15DOI: 10.1002/cctc.202400732
Aidan E. England, Gabriel Hart Slater-Eddy, Laura Earnden, Joshua van der Zalm, Marcel Schlaf
{"title":"Conversion of Penta-Acetyl-Xylitol to 3-Acetoxymethylene-Tetrahydrofuran by a Combined Hetero-/Homogeneous Tandem Catalyst System","authors":"Aidan E. England, Gabriel Hart Slater-Eddy, Laura Earnden, Joshua van der Zalm, Marcel Schlaf","doi":"10.1002/cctc.202400732","DOIUrl":"https://doi.org/10.1002/cctc.202400732","url":null,"abstract":"<p>A tandem catalyst system comprised of trifluoromethanesulfonic (triflic acid, HOTf) or hafnium tetratriflate (Hf(OTf)<sub>4</sub>) and Ru/C in glacial acetic acid (HOAc) as the solvent at 200 °C and ∼ 7 MPa hydrogen pressure in a batch reactor converts penta-acetyl-xylitol ((2<i>R</i>,3<i>R</i>,4<i>S</i>)-pentane-1,2,3,4,5-penta-acetoxy-pentane) or unprotected xylitol to 3-acetoxymethylene-tetrahydrofuran (3-AMT) in up to 15% yield at full conversion. A comparative analysis by SEM-EDS and XPS of the fresh commercial Ru/C catalyst versus catalyst reused and recovered after five cycles shows increasing aggregation of ruthenium to larger particles with a concomitant decrease in yield of 3-AMT to 8%–9% for cycles four and five. 3-AMT or its hydrolysis product 3-hydroxymethyl-tetrahydrofuran (3-HMT) are valuable synthons for the preparation of agrochemicals, pharmaceuticals, and specialty polyurethanes and polyesters.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202400732","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modulating Electronic Structure of MoS2 Nanosheets by Sulfide Enrichment-Induced Vacancies for Enhanced Photocatalytic Hydrogen Production","authors":"Xingyun Chen, Zhenghao Li, Jiangyan Yuan, Xuqiang Hao","doi":"10.1002/cctc.202401624","DOIUrl":"https://doi.org/10.1002/cctc.202401624","url":null,"abstract":"<p>Enhancing photocatalytic activity by changing the electronic structure of the catalyst is an effective strategy. 2H-MoS<sub>2</sub> has semiconductor properties, and its unsaturated side S atom is the main active site for its photocatalytic activity. However, due to the weak S─H bond energy, its hydrogen adsorption capacity is weak. In this work, the electronic structure of MoS<sub>2</sub> is adjusted by S-rich treatment, resulting in the formation of Mo vacancy (MoS<sub>2</sub>-V<sub>Mo</sub>). The level of Mo vacancies was assessed using UV–vis diffuse reflectance spectroscopy (UV–vis DRS). As these vacancies can capture certain photogenerated electrons, thereby reducing the recombination of electron-hole pairs. Through DFT calculation, it is found that the antibonding orbital electron filling of MoS<sub>2</sub>-V<sub>Mo</sub> is weakened, the bond energy of S─Mo bond is weakened, and the bond energy between S─H bond is enhanced, which is more conducive to proton adsorption. The photocatalytic activity for hydrogen evolution of MoS<sub>2</sub>-3, which underwent the optimal S-rich treatment, achieved a remarkable rate of 2404.6 µmol g<sup>−1</sup> h<sup>−1</sup> in dye eosin Y (EY) sensitization system, significantly surpassing that of MoS<sub>2</sub> lacking the S-enriched treatment. This study introduces a novel concept for enhancing the photocatalytic hydrogen evolution performance of metal sulfides via defect engineering.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-14DOI: 10.1002/cctc.202401429
Marco Aurelio Jiménez Sánchez, Simon Carl, Nicola Taccardi, Marco Haumann, Benjamin Apeleo Zubiri, Peter Wasserscheid, Erdmann Spiecker, Nicolas Vogel, Julien Bachmann, Giulia Magnabosco
{"title":"Better Together: Synergic Effect of Gallium-Based Catalyst and Porous Support for Reduction Reactions","authors":"Marco Aurelio Jiménez Sánchez, Simon Carl, Nicola Taccardi, Marco Haumann, Benjamin Apeleo Zubiri, Peter Wasserscheid, Erdmann Spiecker, Nicolas Vogel, Julien Bachmann, Giulia Magnabosco","doi":"10.1002/cctc.202401429","DOIUrl":"https://doi.org/10.1002/cctc.202401429","url":null,"abstract":"<p>Liquid metal solutions are a new class of catalysts with outstanding properties in terms of catalytic conversion and resistance to coking. Finding the perfect combination of catalytic particles with homogeneous size distribution and support material able to stabilize them during catalysis is key for preparing model systems to gain understanding of these complex catalytic processes. In this work, we present a method for the preparation of small and narrowly distributed gallium–palladium particles supported on inverse opals, interconnected 3-D porous networks with a very narrow pore size distribution. Our platform is a promising candidate as supported liquid metal catalytic system thanks to its permeability to fluids and its confined pore environment, which prevents the coalescence of the metal alloy, thus maximizing the surface area available for the catalytic reaction. We demonstrate their enhanced performance when compared to other state of the art systems giving a proof of concept of their application as catalysts for a simple model reaction, the reduction of methylene blue.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202401429","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-14DOI: 10.1002/cctc.202401494
Boyang Li, Jian Li, Shujiang Ding, Yaqiong Su
{"title":"Theoretical Study on Pt1/CeO2 Single Atom Catalysts for CO Oxidation","authors":"Boyang Li, Jian Li, Shujiang Ding, Yaqiong Su","doi":"10.1002/cctc.202401494","DOIUrl":"https://doi.org/10.1002/cctc.202401494","url":null,"abstract":"<p>Optimizing the structural configurations of atom-efficient single-atom catalysts (SACs) is crucial for enhancing the catalytic performance. In this study, we used density functional theory (DFT) to investigate single Pt atoms positioned at step-edges and within a solid solution on the CeO<sub>2</sub>(111) surface, comparing their thermodynamic stability, electronic properties, and potential energy surfaces for CO oxidation. Stability studies indicate that the solid solution catalyst is more stable than the step-edge-supported catalyst. Additionally, the Pt atom in the solid solution effectively activates lattice oxygen, facilitating oxygen vacancy formation. CO oxidation, analysed through the Mars-van Krevelen mechanism, reveals that the solid solution catalyst possesses moderate CO adsorption energy and lower oxygen vacancy formation energy, resulting in reduced energy barriers throughout the CO oxidation cycle. These findings underscore the critical impact of Pt atom configuration within the CeO<sub>2</sub> matrix on catalytic activity, with the solid solution model demonstrating superior efficiency over step-edge-supported Pt catalysts.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-14DOI: 10.1002/cctc.202401565
Santosh R Waghela, Ashadul Adalder, Koushik Mitra, Dr. Uttam Kumar Ghorai
{"title":"Electrocatalytic Urea Synthesis via C─N Coupling Over Fe-Based Catalyst","authors":"Santosh R Waghela, Ashadul Adalder, Koushik Mitra, Dr. Uttam Kumar Ghorai","doi":"10.1002/cctc.202401565","DOIUrl":"https://doi.org/10.1002/cctc.202401565","url":null,"abstract":"<p>Electrochemical urea synthesis under ambient conditions offers a promising alternative to traditional methods, yet suffers from inefficient production due to poor binding of reactants to the catalyst surface, leading to competitive pathways. In this study, we report an electrochemical route for urea synthesis by dual reduction of CO<sub>2</sub> and N<sub>2</sub> gases using iron phthalocyanine (FePc) catalyst. The FePc electrocatalyst showed a urea yield rate of 357 µmol h<sup>−1</sup> g<sub>cat</sub><sup>−1</sup> with a Faradaic efficiency (FE) of 14.36% at −0.4 V versus RHE. This work offers an awareness into the development of an electrochemical route for the efficient electrosynthesis of urea via C─N coupling.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemCatChemPub Date : 2024-11-14DOI: 10.1002/cctc.202401615
Li Zhang, Haiyan Xu, Xiaofan Wu, Yitong Li, Yuan Tao, Prof. Zedu Huang, Prof. Fener Chen
{"title":"Diversification of 3′-Amino Nucleosides via Enzymatic Transglycosylation","authors":"Li Zhang, Haiyan Xu, Xiaofan Wu, Yitong Li, Yuan Tao, Prof. Zedu Huang, Prof. Fener Chen","doi":"10.1002/cctc.202401615","DOIUrl":"https://doi.org/10.1002/cctc.202401615","url":null,"abstract":"<p>A systematic study on the enzymatic transglycosylation of 3′-amino nucleosides has been reported. Using the commercially available 3′-amino-3′-deoxythymidine as the sugar donor, 13 pyrimidine and purine nucleobases were shown as the viable sugar acceptors in the nucleoside phosphorylase <i>Ec</i>PPNP- and/or nucleoside 2′-deoxyribosyltransferase <i>Ll</i>NDT-catalyzed reactions, furnishing the corresponding 3′-amino containing nucleosides in 23%–73% NMR yields at an analytical scale. The synthetic utility of this diversification approach was further showcased by the successful synthesis of 3′-amino-2′,3′-dideoxy-5-bromouridine in 29% isolated yield at a preparative scale. The current work demonstrates the transglycosylation activity of <i>Ec</i>PPNP for the first time, expands the substrate scope of <i>Ll</i>NDT, and provides an efficient, direct access to various 3′-amino nucleosides of high value.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 4","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}