ChemPlusChem最新文献_第5页

Molecular Ni^II Complexes as Bifunctional Electrocatalysts for O₂ Evolution and Urea Electro-Oxidation Reaction. 分子NiII配合物作为氧析出和尿素电氧化反应的双功能电催化剂。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-26 DOI: 10.1002/cplu.202500054

Niteesh Kumar, Lalita Wagh, Sajid Mehmood, Apurba K Das, Tanmay Kumar Ghorai

{"title":"Molecular NiII Complexes as Bifunctional Electrocatalysts for O2 Evolution and Urea Electro-Oxidation Reaction.","authors":"Niteesh Kumar, Lalita Wagh, Sajid Mehmood, Apurba K Das, Tanmay Kumar Ghorai","doi":"10.1002/cplu.202500054","DOIUrl":"10.1002/cplu.202500054","url":null,"abstract":"Developing resilient and robust electrocatalysts devoid of noble metals is vital for facilitating the generation of O2/H2 from water electrolysis, particularly in catalyzing oxygen evolution reaction (OER) and urea oxidation reaction (UOR), respectively. Nickel-based catalysts have attracted as part of global efforts to produce hydrogen from urea-rich wastewater due to their high reaction rates and favorable long-term stability. Two new mononuclear NiII-embedded complexes, namely, [C26H38NiN4O4] (Complex 1) and [C24H32NiF2N4O2] (Complex 2), are explored as a bifunctional catalyst for the OER and UOR herein. Complexes 1 and 2 crystallize in triclinic and monoclinic with space group <math> <semantics> <mrow><mover><mi>P</mi> <mo>¯</mo></mover> </mrow> <annotation>$poverbar$</annotation></semantics> </math> 1 (2) & P 21/c (14), respectively. The OER outcomes of Complex 1 exhibit excellent performance, featuring a lower overpotential of 220 mV and reduced Tafel slope value of 82 mV dec-1 at a benchmarking current density of 10 mA cm-2 in 1 M KOH compared to Complex 2. Additionally, the results of UOR indicate that Complex 1 only requires 1.30 V potential to achieve the same current density which is significantly lower than other counterparts and most reported materials. Chronopotentiometry analysis reveals that Complex 1 is stable up to a longer period of 100 and 20 h in 1 M KOH and alkaline urea electrolyte, respectively.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500054"},"PeriodicalIF":3.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143956942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Evaporation-Induced Electricity Generation: Mechanisms, Optimization Strategies, and Future Prospects. 水蒸发诱导发电：机制、优化策略和未来展望。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-26 DOI: 10.1002/cplu.202500133

Feng Du, Cancan Zhang, Shuying Dong, Shu Wang, Quan Li

引用次数: 0

Using Acetone as a Monosolvent for Ultralow Temperature Supercapacitors at -70 °C. 在-70℃下，丙酮作为超低温超级电容器的单溶剂。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-25 DOI: 10.1002/cplu.202500142

Yiheng Qi, Chuang Bao, Xuanchi Li, Jianhua Yan, Huachao Yang, Zheng Bo

{"title":"Using Acetone as a Monosolvent for Ultralow Temperature Supercapacitors at -70 °C.","authors":"Yiheng Qi, Chuang Bao, Xuanchi Li, Jianhua Yan, Huachao Yang, Zheng Bo","doi":"10.1002/cplu.202500142","DOIUrl":"https://doi.org/10.1002/cplu.202500142","url":null,"abstract":"The low operating temperature limit of commercial supercapacitor electrolyte (-50 °C) could not satisfy the increasing extreme demands like polar resource exploitation (-60 °C) and near-space exploration (-70 °C). Although the introduction of cosolvents with low polarities could improve the viscosity and operating temperature range, the multisolvent electrolyte system still endures low conductivity and high desolvation energy as well as the high production cost. This work introduces the acetone (ACT) as monosolvent for low-temperature electrolyte, which shows the medium dielectric coefficient (ε = 20.9), low donor number (10.67), and ultralow melting point. These properties guarantee its strong ion-dissociation ability for rapid ion-transportation in the bulk electrolyte, and weakened ion-solvent interaction for speeding desolvation process, as well as the outstanding temperature range of liquid phase. The supercapacitor with ACT-based electrolyte exhibits superior capacitance retention ratio (86.5% from 20 to -70 °C), high cycling stability (97.75% after 13,000 cycles) and preeminent power density and energy density (3776 W kg-1 @ 14.16 W h kg-1). Besides, the ACT solvent also displays the merits of low biological toxicity and low production cost, which further enhance its application prospect in the energy storage systems.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500142"},"PeriodicalIF":3.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

INTERFACIALLY-ACTIVE COMPONENT IN HEAVY OIL: STRUCTURE, INTERFACIAL BEHAVIORS, AND REGULATION STRATEGIES. 稠油中的界面活性组分：结构、界面行为和调控策略。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-23 DOI: 10.1002/cplu.202500064

Yang Xue, Changqing He, Yunhai Bai, Wenxue Jiang, Lin He, Hong Sui

{"title":"INTERFACIALLY-ACTIVE COMPONENT IN HEAVY OIL: STRUCTURE, INTERFACIAL BEHAVIORS, AND REGULATION STRATEGIES.","authors":"Yang Xue, Changqing He, Yunhai Bai, Wenxue Jiang, Lin He, Hong Sui","doi":"10.1002/cplu.202500064","DOIUrl":"https://doi.org/10.1002/cplu.202500064","url":null,"abstract":"Natural interfacially-active substances in heavy oil induce phenomena such as emulsification, deposition, hyperviscosity, and clogging through interfacial behaviors including adsorption, aggregation, and self-assembly, significantly impacting extraction and transportation processes in the petroleum industry. Although the macroscopic behaviors have been extensively studied, molecular-level mechanisms remain in debate, limiting the ability to control interfacial phenomena effectively. This review examines the active structures and molecular mechanisms of these substances in heavy oil, elucidating the unique behaviors of molecules such as asphaltenes and colloids in the oil phase and at phase interfaces. The study reveals how molecular structures, hydrogen bonding, π-π stacking, and external conditions affect their interfacial properties, and summarizes strategies for regulating interfacial behaviors by adjusting molecular interactions. By providing new perspectives on the molecular behavior of interfacially active substances, this review establishes a scientific foundation for developing more efficient interfacial regulation strategies. These insights address specific issues in heavy oil extraction and processing while promoting broader advancements in molecular interface science, potentially guiding technological innovations in the energy and petrochemical industries.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500064"},"PeriodicalIF":3.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glucose-Tuned Electrode-Electrolyte Interface Microenvironment for Electrosynthesis of Hydrogen Peroxide. 过氧化氢电合成的葡萄糖调谐电极-电解质界面微环境。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-22 DOI: 10.1002/cplu.202500195

Shu-Hui Zhang, Hong-Kai Guo, Yi-Ming Zhang, Zhi Ma, Na-Na Tian, Zhong-Li Wang

引用次数: 0

NT-OmpA Bioemulsifier: Structural Insights and Polysaccharide-Mediated Enhancement of Its Emulsifying Performance. NT-OmpA生物乳化剂：结构和多糖介导的乳化性能增强。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-22 DOI: 10.1002/cplu.202400774

Naeema Mohseni Sani, Mahbubeh Talaee, Fatemeh Saadati, Faranak Ashoori, Javad Zamani, Hossein Shahbani Zahiri, Hojatollah Vali, Kambiz Akbari Noghabi

{"title":"NT-OmpA Bioemulsifier: Structural Insights and Polysaccharide-Mediated Enhancement of Its Emulsifying Performance.","authors":"Naeema Mohseni Sani, Mahbubeh Talaee, Fatemeh Saadati, Faranak Ashoori, Javad Zamani, Hossein Shahbani Zahiri, Hojatollah Vali, Kambiz Akbari Noghabi","doi":"10.1002/cplu.202400774","DOIUrl":"https://doi.org/10.1002/cplu.202400774","url":null,"abstract":"Our recent studies found that NT-OmpA (N-terminally truncated SA01-OmpA) has distinct advantages over full-length SA01-OmpA, including non-cytotoxicity, enhanced emulsifying capacity, and higher production yield. This study builds upon prior research by investigating the emulsifying properties of NT-OmpA under various environmental conditions, such as temperature, salinity, and pH. Molecular dynamics (MD) simulations and circular dichroism (CD) spectroscopy revealed significant alterations in the secondary structure of NT-OmpA under extreme conditions, specifically at alkaline pH (pH 11) and elevated temperatures (90°C). Circular dichroism (CD) spectroscopy showed a significant decrease in alpha-helical content and increased beta-sheet structures, validating NT-OmpA's pH stability. We investigated NT-OmpA's effectiveness when combined with various polysaccharides to enhance its functional properties. Dextran (emulsification index of 76.94 ± 0.05 %) exhibited superior emulsifying activity compared to glucose, agarose, starch, and NT-OmpA alone. NT-OmpA's emulsifying characteristics are considerably improved by dextran, making this combination a promising next-generation emulsifier. These findings underscore the structural resilience and functional adaptability of NT-OmpA, especially in challenging environmental conditions, and highlight its potential in industrial applications requiring robust emulsifying agents.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202400774"},"PeriodicalIF":3.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143959842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the Secret Chemistry of Street Art by a Multitechnique Approach. 用多技术方法揭示街头艺术的秘密化学。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-22 DOI: 10.1002/cplu.202500059

Elena C L Rigante, Francesca Modugno, Jacopo La Nasa, Silvia Pizzimenti, Tommaso R I Cataldi, Cosima D Calvano

{"title":"Unveiling the Secret Chemistry of Street Art by a Multitechnique Approach.","authors":"Elena C L Rigante, Francesca Modugno, Jacopo La Nasa, Silvia Pizzimenti, Tommaso R I Cataldi, Cosima D Calvano","doi":"10.1002/cplu.202500059","DOIUrl":"https://doi.org/10.1002/cplu.202500059","url":null,"abstract":"In recent years, graffiti and street art have gained recognition as legitimate art forms, deserving of the same care and attention as traditional art. As a result, conservators and restorers are now working to develop standardized guidelines for the cleaning, conservation, and restoration of these vibrant works. Our study takes a closer look at the materials used in street art, specifically the spray varnishes used by artists. Samples from two murals created in 2021 in Bari, Italy, are analyzed using a range of advanced techniques such as attenuated total reflection Fourier-transform infrared spectroscopy, reversed-phase liquid chromatography coupled with UV-Vis and electrospray ionization mass spectrometry (MS), and laser desorption ionization MS as well as pyrolysis-gas chromatography/MS. Acrylic, polyvinyl acetate, and styrene-acrylic resins are identified as the primary binders used in street art spray varnishes, along with common additives such as polyethylene and polypropylene glycol. The organic dyes and pigments, such as yellow (PY74), orange (PO36), red (rhodamine), and blue (phthalocyanine) hues used to create colorful images of street art, are also characterized. This study demonstrates the importance of a multitechnique approach in understanding the complex chemistry of modern spray varnishes used in street art.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500059"},"PeriodicalIF":3.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-Energy Electron-Induced Dissociation of the Radiosensitizing Agent Sanazole. 放射性增敏剂Sanazole的低能电子诱导解离。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-21 DOI: 10.1002/cplu.202500120

Farhad Izadi, Masoomeh Mahmoodi-Darian, Thomas F M Luxford, Jaroslav Kočišek, Stephan Denifl, Milan Ončák

{"title":"Low-Energy Electron-Induced Dissociation of the Radiosensitizing Agent Sanazole.","authors":"Farhad Izadi, Masoomeh Mahmoodi-Darian, Thomas F M Luxford, Jaroslav Kočišek, Stephan Denifl, Milan Ončák","doi":"10.1002/cplu.202500120","DOIUrl":"https://doi.org/10.1002/cplu.202500120","url":null,"abstract":"Sanazole is a hypoxic radiosensitizer for which the activation mechanism in cells has been suggested to involve initial reduction. Herein, electron attachment to sanazole under isolated conditions and upon microhydrations is investigated. Employing mass spectrometry supported by quantum chemical calculations, the anion formation mechanism and subsequent fragmentation pathways are examined. In the case of electron attachment to the isolated molecule, predominantly dissociative electron attachment is observed. The most prominent fragment anion, (NTR-yl)- at m/z 113, is suggested to be formed in an exothermic pathway through a single-bond dissociation, whereas other intense fragments require structural reorganization. The limited abundance of the parent anion under isolated conditions is altered upon microhydration conditions since in the latter situation only the (microhydrated) parent anion is observed. This result suggests that hydration closes and/or slows down the dissociation process and indicates that for sanazole, the initial mechanism of action in a reductive cell environment may be similar to that of well-studied nitroimidazole radiosensitizers.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500120"},"PeriodicalIF":3.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coupling Co, N Co-Doped Carbon Nanotubes and PtCo Nanoparticles for Boosting Oxygen Reduction Reaction. Co， N共掺杂碳纳米管与PtCo纳米颗粒耦合促进氧还原反应。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-19 DOI: 10.1002/cplu.202500076

Wen Feng, Congyue Sun, Xiaojin Li, Xiliang Luo, Wenqi Liu

{"title":"Coupling Co, N Co-Doped Carbon Nanotubes and PtCo Nanoparticles for Boosting Oxygen Reduction Reaction.","authors":"Wen Feng, Congyue Sun, Xiaojin Li, Xiliang Luo, Wenqi Liu","doi":"10.1002/cplu.202500076","DOIUrl":"https://doi.org/10.1002/cplu.202500076","url":null,"abstract":"The exploitation of an efficient and stable oxygen reduction reaction (ORR) catalyst plays a crucial role in the slow kinetics of the cathode in proton exchange membrane fuel cells. In this study, a catalyst loaded with PtCo alloys on Co and N co-doped carbon nanotubes (PtCoNC) is synthesized for oxygen reduction reaction, which has high activity and stability. The carbon nanotube structure provides efficient transport channels for reactant exchange and product transport, as well as provides a wealth of triple-phase sites, that improves the utilization of Pt. Further, the PtCoNC catalyst exhibits robust metal-support interactions, which can be attributed to the anchoring of the Co-Nx sites to Pt. Theoretical calculations indicating an increase in binding energy and a reduction in layer spacing provide conclusive verification of the presence of augmented interactions between PtCo nanoparticles and the support. As a result, the low Pt-loaded (0.025 mg cm-2) PtCoNC catalyst demonstrates superior ORR activity to that of commercial Pt/C with an impressive half-wave potential of 0.893 V vs reversible hydrogen electrode (RHE) in 0.1 M HClO4 solution. At 0.9 V vs RHE, its mass activity and specific activity are 3 and 2.6 times that of commercial Pt/C, respectively. It also shows better stability in acidic environment.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500076"},"PeriodicalIF":3.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Lubricating Properties of Bio-Based Lubricants from Palm Oil. 棕榈油生物基润滑油的合成及其润滑性能研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-04-17 DOI: 10.1002/cplu.202500013

Jun Ye, Jiarui Zhang, Chaosheng Li, He Xu, Ming Sun, Lishu Xu, Lin Yu

{"title":"Synthesis and Lubricating Properties of Bio-Based Lubricants from Palm Oil.","authors":"Jun Ye, Jiarui Zhang, Chaosheng Li, He Xu, Ming Sun, Lishu Xu, Lin Yu","doi":"10.1002/cplu.202500013","DOIUrl":"https://doi.org/10.1002/cplu.202500013","url":null,"abstract":"This study explores the synthesis of bio-lubricants derived from palm oil, highlighting its potential as a sustainable alternative to petroleum-based lubricants. Through epoxidation and subsequent ring-opening reactions using isoamyl alcohol, palmitic acid esters (PAE), with enhanced thermal and oxidative stability is developed. Optimal ring-opening reaction conditions, identified as 100 °C with p-toluenesulfonic acid as the catalyst. The synthesized bio-lubricant PAE, exhibits superior tribological performance, achieving lower friction coefficients and reduced wear scar diameters compared to the original palm oil. Comparing PAE with palm oil, the average coefficient of friction is reduced by 9.8%, the PB value increased from 82 to 88 kg, and the PD value increased from 620 to 800 kg. The average grinding spot diameter decreased from about 600 to 500 μm, a decrease of 16.7%. These findings highlight its potential as a sustainable and effective industrial lubricant. This study underscores the significance of chemical modification in enhancing the performance of bio-lubricants and contributes to the development of environmentally friendly alternatives to traditional petroleum-based products, offering sustainable solutions for industrial lubrication needs.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500013"},"PeriodicalIF":3.0,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0