New Journal of Chemistry最新文献

{"title":"Sustainable, precious-metal-free C–N cross coupling through photocatalysis†","authors":"Mohammad Hassam, Samuelu Mamidipalli, Akhila Ailaveni, Pankajkumar Singh and Shambabu Joseph Maddirala","doi":"10.1039/D4NJ04300F","DOIUrl":"https://doi.org/10.1039/D4NJ04300F","url":null,"abstract":"<p >Photoredox catalysis has evolved as a sustainable method of constructing C–N bonds. Herein, we have reported a visible-light organic-photoredox-catalyzed method that enables C–N cross-coupling under mild and sustainable reaction conditions. This catalytic system is suitable for both aromatic and aliphatic amines, as well as electron-rich and -deficient aryl bromides, exhibits broad functional group tolerance, and provides good-to-excellent yields. The noteworthy aspects of milder reaction conditions at room temperature without the addition of any additional ligands make this procedure attractive.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 9","pages":" 3436-3441"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475077","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":"Metal- and base-free selective amidations of organoboronic acids with dioxazolones and isocyanates†","authors":"Hui Sun, Shuguang Chen and Hui Wang","doi":"10.1039/D5NJ00163C","DOIUrl":"https://doi.org/10.1039/D5NJ00163C","url":null,"abstract":"<p >Herein, we describe metal- and base-free cross-coupling reactions of boronic acids with dioxazolones and isocyanates to selectively synthesize various amides. These reactions occurred with processes of 1,2- and 1,3-migrations to construct C–N and C–C bonds to provide the corresponding amides in satisfactory to good yields under mild conditions, respectively.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 9","pages":" 3795-3800"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475099","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":"A cotton-based adsorbent grafted with an EDTA analog and its metal ion-selective absorption properties in aqueous solution","authors":"Tao Hu, Chengzhen Du, Xiaoli Hu, Cheng Tang and Chuntan Chen","doi":"10.1039/D4NJ04375H","DOIUrl":"https://doi.org/10.1039/D4NJ04375H","url":null,"abstract":"<p >This paper reports the synthesis of a solid adsorbent derived from degreasing cotton, and its metal ion removal ability in low concentration aqueous solution. In the first section of this paper, a novel synthetic strategy was reported for the introduction of an EDTA analog (aminoacetic acid) onto the surface of cotton fibers, resulting in a modified cotton adsorbent <em>N</em>,<em>N</em>-(dicarboxymethylaminoethyl,carboxymethyl)aminoethylamine carboxymethyl cotton amide. This material was characterized using <small>¹³</small>C NMR spectroscopy, elemental analysis and SEM/EDS/EBSD. In the second section, the adsorption behavior of this material for the removal of Cu<small>²⁺</small>, Pb<small>²⁺</small> and Cd<small>²⁺</small> from aqueous solution was assessed and analyzed using Langmuir and Freundlich models. Competitive ion adsorption and fixed-bed column adsorption experiments were carried out to evaluate its selective adsorption properties in mixed metal ion solutions using ICP spectroscopy. The results showed that this grafted cotton exhibited coordination properties similar to EDTA for the different metal ions, and that it exhibited selectivity and had good metal ion removal ability from low concentration solution. The maximum adsorption capacities for Cu<small>²⁺</small>, Cd<small>²⁺</small>, and Pb<small>²⁺</small> were estimated to be 23.45 mg g<small>⁻¹</small>, 34.7 mg g<small>⁻¹</small>, and 66.93 mg g<small>⁻¹</small>, respectively. Regeneration and adsorption experiments illustrated that this material had good renewable properties and could be used for multiple metal ion removal adsorption–regeneration–adsorption cycles. This material has great potential for application in the adsorption of toxic elements such as Cu<small>²⁺</small>, Cd<small>²⁺</small>, Pb<small>²⁺</small> and other metal ions from aqueous solution.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 8","pages":" 3248-3257"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430661","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":"Ionic liquid–metal–organic framework-modified composite electrolyte for high-performing lithium-ion batteries†","authors":"Aparna S. Potdar, Rushikesh B. Kale, Reshma S. Ballal, Jalindar Ambekar, Ramchandra S. Kalubarme, Nageshwar D. Khupse, Bharat B. Kale and Milind V. Kulkarni","doi":"10.1039/D4NJ04857A","DOIUrl":"https://doi.org/10.1039/D4NJ04857A","url":null,"abstract":"<p >Solid polymer membranes are being widely explored as electrolytes for Li-ion batteries; however, the low ionic conductivity restricts their practical application. Developing high Li<small>⁺</small> ion-conducting polymer electrolytes with superior thermal stability and mechanical strength has been a long-standing challenge. In this study, a composite electrolyte based on a metal–organic framework (MOF) and ionic liquids (ILs) incorporated with PVDF–HFP polymer (UIO@IL-CE) has been developed using a simple solution casting approach. The composite electrolyte (UIO@IL-CE) exhibits excellent thermal stability (400 °C) and mechanical strength. The electrochemical characterization shows that ionic conductivity is 6.14 × 10<small>⁻⁴</small> S cm<small>⁻¹</small> at room temperature after the incorporation of MOF-IL, and it is further enhanced at elevated temperatures, <em>i.e.</em>, 1.72 × 10<small>⁻³</small> S cm<small>⁻¹</small> (75 °C). Furthermore, the cell with a composite electrolyte with a LiFePO<small>₄</small> cathode exhibits an initial discharge capacity of 140 mA h g<small>⁻¹</small> at 1C without fading the cycling performance. Remarkably, even at a high C-rate of 5C, the UIO@IL-CE-II membrane exhibits excellent electrochemical performance with a specific capacity of 81 mA h g<small>⁻¹</small> after 300 cycles, which is mainly attributed to the combination of MOF-IL and the PVDF–HFP matrix. The present study provides a new avenue and an effective strategy for developing high-performance lithium-ion batteries.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 8","pages":" 3227-3235"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430689","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":"A magnetically separable Brønsted acid catalyst for the synthesis of Bisguaiacol-F†","authors":"Komal Tarade, Chandrashekhar Rode and Sanjay Kamble","doi":"10.1039/D4NJ04624B","DOIUrl":"https://doi.org/10.1039/D4NJ04624B","url":null,"abstract":"<p >Currently, polycarbonates, epoxy resins, and plastics are commercially made from Bisphenol-A. However, BPA-containing materials are well known for causing major health problems and have been banned in several countries. To address this concern, Bisguaiacol-F (BGF) has been developed as a safer and more sustainable alternative to Bisphenol-A. We created a novel sulfonic acid-functionalized, magnetically separable heterogeneous Brønsted acid catalyst, [Fe<small>₃</small>O<small>₄</small>@SiO<small>₂</small>-(Pr)<small>₃</small>-<em>N</em>-Bu-SO<small>₃</small>H][HSO<small>₄</small><small>⁻</small>], which was successfully utilized for the manufacture of BGF by condensing 37% aq. formaldehyde with two molecules of guaiacol. The main objective for this reaction was to avoid using excess guaiacol while also completing the conversion of both starting components. Surprisingly, our manufactured catalyst promotes the complete conversion of aqueous formaldehyde and guaiacol into regioisomers such as <em>pp</em>′-BGF, <em>mp</em>′-BGF and <em>op</em>′-BGF with 62%, 15%, and 6% selectivity, respectively. Our novel magnetically separable heterogeneous catalyst has improved catalytic activity in terms of starting material conversion and product distribution, which can be attributed to its unique structural characteristics. It contains a pendant –SO<small>₃</small>H group that is connected to a lengthy butyl chain, making it conveniently accessible in the reaction. We have created the framework for a promising and environmentally aware approach to the synthesis of Bisguaiacol-F by meticulously optimizing reaction parameters such as time, temperature, reactant molar ratio, and catalyst loading. The catalyst was extensively characterized using acid–base titration, FT-IR, XRD, TGA, and NMR techniques to confirm the structure and reveal remarkable stability and activity. Notably, the catalyst demonstrated recyclability across six consecutive runs, with no noticeable reduction in its effectiveness. The catalytic activity was also tested for guaiacol condensation with a variety of aldehydes to create Bisguaiacol derivatives.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 8","pages":" 3273-3284"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430677","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":"An immunosensor based on hydrogen evolution signals of CoNiSe2/g-C3N4 for the detection of carcinoembryonic antigen†","authors":"Chunyu Yu, Lingfeng Gao, Shichen Wang, Haoqi Zhan, Long Wei, Zhibin Han, Zeyu Wang, Xu Sun and Qin Wei","doi":"10.1039/D4NJ05333H","DOIUrl":"https://doi.org/10.1039/D4NJ05333H","url":null,"abstract":"<p >Electrochemical immunosensors are critical for biomarker detection, in which the enhancement of the electrochemical signal is beneficial to improve the sensitivity of the immunosensor. Recently, the hydrogen evolution reaction (HER) from water splitting has garnered significant attention because of its importance in the clean production of hydrogen energy; it also provides a novel way of constructing electrochemical immunosensors based on an electrocatalytic signal. Herein, we successfully fabricated a CoNiSe<small>₂</small>/g-C<small>₃</small>N<small>₄</small> composite using a hydrothermal reaction, and it exhibited outstanding HER activity in both acidic and neutral solutions. It was adopted as a novel electrocatalytic marker to capture carcinoembryonic antigen (CEA) secondary antibody (Ab<small>₂</small>) because of its superior HER activity in neutral solution. Then, a glassy carbon electrode (GCE) decorated with gold nanoparticles (Au NPs) was applied to be the bridge immobilizing CEA major antibodies, after which the immunosensor with a sandwich structure was fabricated. The experimental results demonstrated that the immunosensor exhibits a linear range of 0.0001 to 100 ng mL<small>⁻¹</small> along with a detection limit for 0.18 pg mL<small>⁻¹</small> (S/N = 3). Additionally, it is exceedingly repeatable, specific, stable, and practical. Our study establishes a fresh strategy to detect CEA, further expanding the applications of the electrocatalytic HER process.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 9","pages":" 3715-3723"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475092","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":"An in-depth simulation analysis of the reaction mechanism of ethanol dehydration to ethylene and carbon deposition on the γ-Al2O3(100) surface†","authors":"Tongyan Liang, Liangfeng An, Junxiu Lu, Yingzhe Yu and Minhua Zhang","doi":"10.1039/D4NJ05114A","DOIUrl":"https://doi.org/10.1039/D4NJ05114A","url":null,"abstract":"<p >Ethylene serves as a pivotal chemical commodity, often regarded as a barometer of a nation's petrochemical industry sophistication. The conversion of biomass-derived ethanol into ethylene through dehydration represents an avenue ripe with developmental potential and expansive application horizons. While current research has delved extensively into the primary reaction mechanisms of ethanol dehydration to ethylene facilitated by γ-Al<small>₂</small>O<small>₃</small> catalysts, the exploration of by-product formation mechanisms remains somewhat superficial and incomplete. In this study, we employ a synergistic approach, harnessing density functional theory (DFT) and kinetic Monte Carlo (kMC) simulations, to scrutinize both the primary and ancillary reaction pathways in the ethanol-to-ethylene dehydration process on the γ-Al<small>₂</small>O<small>₃</small>(100) surface. Our investigation aims to elucidate the optimal production routes for both the main and by-products, while also assessing the impact of reaction conditions on the reaction mechanisms and the carbon deposition phenomenon. Employing DFT, this study concentrates on by-products including ether, hydrogen, methane, carbon monoxide, carbon dioxide, ethane, butene, and water. We have computed the surface adsorption characteristics of the pertinent species and probed into the generation mechanisms of each by-product, thereby ascertaining the most favorable pathways for their formation. Subsequently, kMC simulations were conducted to scrutinize the influence of temperature on the production mechanism of the primary product, ethylene. It was observed that a temperature below 380 °C is detrimental to ethylene formation, wherein a minor quantity of ethylene is predominantly yielded through the intermolecular dehydration of ethanol to form ether, followed by bond scission. Conversely, at temperatures surpassing 380 °C, there is a marked escalation in ethylene production, with the intramolecular dehydration of ethanol to produce ethylene emerging as the predominant route. Furthermore, the study also delved into the impact of reaction conditions on the carbon accumulation process on the catalyst surface. A significant rise in carbon deposition was noted when temperatures exceeded 440 °C. The incorporation of water was found to be advantageous in curbing carbon deposition, with an optimal water-to-ethanol ratio of 3 identified for minimizing coking.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 9","pages":" 3759-3775"},"PeriodicalIF":2.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475096","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":"High-performance hydrogen generation via activated Al–Bi2Se3 composite materials†","authors":"Huashuan Li, Lumin Liao, Tianhao Zhou, Kaixiang Ren, Shichang Han and Tianyu Zhu","doi":"10.1039/D4NJ05117C","DOIUrl":"https://doi.org/10.1039/D4NJ05117C","url":null,"abstract":"<p >Al-based composites have emerged as promising hydrogen generation materials due to their high yield and low cost, yet slow hydrogen generation kinetics have impeded their widespread application. In this study, a series of novel Al–Bi<small>_<em>x</em></small>M<small>_<em>y</em></small> composites were synthesized <em>via</em> high-energy ball milling, with the Al–15 wt% Bi<small>₂</small>Se<small>₃</small> composite demonstrating superior hydrogen generation performance. Achieving an unprecedented catalytic efficiency at ambient conditions, this composite reached a maximum hydrogen generation (MHG) rate of 1139 mL g<small>⁻¹</small> min<small>⁻¹</small> and completed hydrogen generation within 5 min with a 97.6% conversion yield. Through comprehensive characterization using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS), <em>in situ</em> Se and Bi were found on the fresh Al surface. Density functional theory calculations (DFT) elucidated the mechanism by which Bi doping enhances water adsorption and the cleavage of O–H bonds. These findings provide important insights for the design of high-performance Al-based hydrogen generation materials with improved kinetics and efficiency.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 8","pages":" 3140-3146"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430662","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":"Effects of structural differences between γ-MnO2 and γ-Mn2O3 catalysts on CO oxidation: different active oxygen species and carbonate species using operando TPR-DRIFTS-MS†","authors":"Jiacheng Xu, Peng Weng and Shuiliang Yao","doi":"10.1039/D4NJ05547K","DOIUrl":"https://doi.org/10.1039/D4NJ05547K","url":null,"abstract":"<p >Reactive oxygen species and carbonates on the catalyst surface are key species in the process of CO oxidation. However, the essential relationship between reactive oxygen species production, carbonate desorption and catalytic activity under real conditions remains unclear. In this paper, γ-MnO<small>₂</small> and γ-Mn<small>₂</small>O<small>₃</small> catalysts are prepared by an aerosol method, and <em>operando</em> TPR-DRIFTS-MS is used as the main characterization method. γ-MnO<small>₂</small> has the best CO oxidation activity (90 °C) and redox capacity due to its surface defects (oxygen vacancies) and more surface oxygen adsorption. <em>Operando</em> TPR-DRIFTS-MS results show that Mn<img>O plays a major role at low temperature. Mn<img>O also facilitates the formation of <em>v</em><small>_as</small>(CO<small>₃</small><small>²⁻</small>) or <em>v</em><small>_s</small>(OCO), and decomposition at low temperatures is a decisive step in CO oxidation. In addition, the existence of oxygen vacancies is conducive to promoting the dissociation and activation of O<small>₂</small>. The above conclusions reveal the relationship between surface carbonates (surface oxygen species) and catalyst activity, and provide a theoretical basis for regulating the microstructure of Mn-based catalysts.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 8","pages":" 3147-3156"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430663","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":"Hierarchical mesoporous Mn2O3/NiO/Co3O4 nanocubes derived from Prussian blue analogues for high performance asymmetric supercapacitors†","authors":"Song Liu, Bingge Li, Ziwei Sun and Xiaojie Liu","doi":"10.1039/D4NJ04893H","DOIUrl":"https://doi.org/10.1039/D4NJ04893H","url":null,"abstract":"<p >In this paper, hierarchical Mn<small>₂</small>O<small>₃</small>/NiO/Co<small>₃</small>O<small>₄</small> (denoted as MNC) composite nanocubes composed of small nanoparticles were obtained by calcinating a Prussian blue analogue (PBA) nanocube precursor. The effects of heating temperature and phase composition on the electrochemical performance were systematically studied. The results showed that the MNC-400 electrode reached a high capacity of 264.8 F g<small>⁻¹</small> at 1 A g<small>⁻¹</small> with a good capacitance retention of 82.1% (5000 cycles). The asymmetric supercapacitor (ASC) constructed with the MNC-400 electrode and activated carbon (AC) can provide a high energy density of 33.8 W h kg<small>⁻¹</small> at a power density of 780.0 W kg<small>⁻¹</small> and an excellent cycling stability of 86.4% after 5000 cycles.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 9","pages":" 3736-3743"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475094","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}