ChemPlusChem最新文献_第5页

Structural Reconstruction of a New Cobalt-Based Metal-Organic Framework for the Efficient Electrocatalytic Hydrogen Production. 高效电催化制氢新钴基金属有机骨架的结构重构。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-28 DOI: 10.1002/cplu.202500177

Vandana Vishwakarma, Nilankar Diyali, Abhranil De, Angshuman Roy Choudhury, Bhaskar Biswas

{"title":"Structural Reconstruction of a New Cobalt-Based Metal-Organic Framework for the Efficient Electrocatalytic Hydrogen Production.","authors":"Vandana Vishwakarma, Nilankar Diyali, Abhranil De, Angshuman Roy Choudhury, Bhaskar Biswas","doi":"10.1002/cplu.202500177","DOIUrl":"10.1002/cplu.202500177","url":null,"abstract":"This study illustrates the fate of a cobalt-based metal-organic framework (CoL1-MOF) during the hydrogen evolution reaction in 1 M aqueous KOH. The electrocatalytic hydrogen evolution activity of a CoL1-MOF is evaluated using cyclic voltammetry (CV) in 1 M KOH, with a three-electrode setup under an N2 atmosphere. The CoL1-MOF exhibits a 436 mV overpotential to reach a current density of 10 mA cm- 2 for hydrogen evolution reaction (HER), while the bare GCE shows negligible activity. Tafel slope of 75 mV dec-1 reveals that CoL1-MOF follows the Volmer-Heyrovsky mechanism. The intrinsic activity of CoL1-MOF is further assessed through electrochemical parameters, including electrochemical double-layer capacitance (Cdl), roughness factor (Rf), and electrochemically active surface area (ECSA), demonstrating enhanced accessibility to active sites. Stability tests show that CoL1-MOF maintains consistent HER activity during continuous operation, with a gradual increase in current density due to structural reconstruction. Postelectrolysis analysis such as Powder X-ray Diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), Fourier Transformed Infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Energy Dispersive Analysis of X-rays (EDAX) confirmed the formation of metal hydroxide/oxyhydroxide phases accompanied by morphological changes. Remarkably, the post-electrolysis CoL1-MOF demonstrated enhanced HER performance with a reduction in overpotential. This study demonstrates the cost-effective synthesis of 1D transition metal-based MOFs and their potential for sustainable hydrogen production, offering a promising solution to the energy crisis.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500177"},"PeriodicalIF":3.0,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155418","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

Cover Feature: A Computational Design of Covalently Bonded Mixed Stacking Cocrystals (ChemPlusChem 5/2025) 封面特征：共价键合混合堆叠共晶的计算设计（ChemPlusChem 5/2025）

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-26 DOI: 10.1002/cplu.202580502

Lam H. Nguyen, Thanh N. Truong

引用次数: 0

Front Cover: Stabilization of Verdigris Pigment on Paper: Evaluation of Antioxidants Under Mild Accelerated Degradation Conditions (ChemPlusChem 5/2025) 封面：纸上铜绿色素的稳定性：轻度加速降解条件下抗氧化剂的评价（ChemPlusChem 5/2025）

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-26 DOI: 10.1002/cplu.202580501

Dr. Jasna Malešič, Dr. Klara Retko, Dr. Matjaž Finšgar, Dr. Irena Kralj Cigić

引用次数: 0

Heterogeneous Polyoxometalate-Based Catalysts for Functionalized Quinones Synthesis: Systematic Advances, Prospects, and Challenges. 基于多金属氧酸盐的多相功能化醌合成催化剂：系统进展、前景和挑战。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-26 DOI: 10.1002/cplu.202500261

Shenzhen Chang, Yanhong Chen, Jinhao Zhang, Qinhe Pan, Yingjie Hua

{"title":"Heterogeneous Polyoxometalate-Based Catalysts for Functionalized Quinones Synthesis: Systematic Advances, Prospects, and Challenges.","authors":"Shenzhen Chang, Yanhong Chen, Jinhao Zhang, Qinhe Pan, Yingjie Hua","doi":"10.1002/cplu.202500261","DOIUrl":"10.1002/cplu.202500261","url":null,"abstract":"Functionalized quinones are crucial structural building blocks for synthesizing significant biologically active compounds. The selective catalytic oxidation of low-valent oxygen precursors (including aromatic compounds, phenolic derivatives, and hydroquinone analogs) has been widely recognized as one of the most economically and environmentally favorable approaches for producing functionalized quinones. Polyoxometalates (POMs), as versatile inorganic clusters, have attracted much attention in multidisciplinary fields, especially in catalysis, due to their adjustable structural configuration and acid-base properties, excellent redox properties, as well as remarkable thermal stability, chemical stability, and hydrolysis stability. As a pivotal branch, POM-based heterogeneous catalytic systems not only preserve the inherent, highly active sites of POMs but also establish synergistic catalytic networks through the integration of hybrid components. This paves a new way for achieving material recyclability and green catalytic technology. This review presents a critical analysis of research advances in POM-based heterogeneous catalysts for quinone synthesis over recent decades and systematically proposes optimization strategies from the perspective of material design principles and catalytic processes, aiming to offer molecular engineering theoretical support for the construction of a new generation of catalytic platform.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500261"},"PeriodicalIF":3.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144141332","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 Properties of Aryl- and Amino-Substituted Dibenzo[b,e]phosphindolizines. 芳基和氨基取代二苯并[b，e]膦化吡啶的合成与性能。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-25 DOI: 10.1002/cplu.202500204

Akihiro Tsurusaki, Makoto Nakamura, Akihiro Komura, Ken Kamikawa

引用次数: 0

Unveiling the Decarboxylation of a Malonic Acid-Containing Macrocycle at Acidic pH: Implications and Applications of an Overlooked Phenomenon. 揭示含丙二酸的大环在酸性pH下的脱羧：一个被忽视的现象的含义和应用。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-23 DOI: 10.1002/cplu.202500213

Sara Franchi, Marianna Tosato, Valerio Di Marco

引用次数: 0

From the Archives: Chemical Study of Royal Seal Cords using Mass Spectrometric Techniques. 来自档案：使用质谱技术对皇家印章的化学研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-21 DOI: 10.1002/cplu.202500098

Anna Czajka, Katarzyna Lech, Izabela Anna Nasiłowska, Gaja Wachowska, Barbara Wagner

{"title":"From the Archives: Chemical Study of Royal Seal Cords using Mass Spectrometric Techniques.","authors":"Anna Czajka, Katarzyna Lech, Izabela Anna Nasiłowska, Gaja Wachowska, Barbara Wagner","doi":"10.1002/cplu.202500098","DOIUrl":"10.1002/cplu.202500098","url":null,"abstract":"This research project is dedicated to examinations of the chemical composition of seal cords of Łaski's Statute (1506), a significant document from the Polish-Lithuanian Commonwealth listed in the UNESCO Memory of the World national register. The cords, along with cords from four other royal documents of the same period, show considerable deterioration due to age and material components. The analysis employs laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) and high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (HPLC-UV-Vis-ESI MS/MS) to examine the inorganic mordants and organic dyes. The results reveal ellagitannin dyes in black cords, and madder and lac dye markers in one red cord. Some soluble redwoods (likely pernambuco, known also as brazilwood) are detected in the others, either on their own or as mixed with weld. The preservation state varies among cords, correlating with the mordants; iron predominates in the black and red threads of Łaski's Statute, contributing to their degradation, whereas the white cord exhibits higher sulfur content. In situ sampling using papers soaked with bathophenanthroline (Bphen) allows detection of major elements in the fibers. These findings are vital for guiding future conservation practices and mitigating risks in cleaning and restoring these delicate materials.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500098"},"PeriodicalIF":3.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109254","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

Field Test of a Bioelectrochemical Membrane-Less Reactor for Chlorinated Aliphatic Hydrocarbon and Nitrate Removal from a Contaminated Groundwater. 生物电化学无膜反应器去除污染地下水中氯化脂肪烃和硝酸盐的现场试验。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-20 DOI: 10.1002/cplu.202400683

Geremia Sassetto, Maria Presutti, Agnese Lai, Giulia Simonetti, Laura Lorini, Marco Petrangeli Papini, Marco Zeppilli

{"title":"Field Test of a Bioelectrochemical Membrane-Less Reactor for Chlorinated Aliphatic Hydrocarbon and Nitrate Removal from a Contaminated Groundwater.","authors":"Geremia Sassetto, Maria Presutti, Agnese Lai, Giulia Simonetti, Laura Lorini, Marco Petrangeli Papini, Marco Zeppilli","doi":"10.1002/cplu.202400683","DOIUrl":"10.1002/cplu.202400683","url":null,"abstract":"This study uses a membrane-less reactor to explore the bioelectrochemical remediation of real contaminated groundwater from chlorinated aliphatic hydrocarbons (CAHs) and nitrates. The research focuses on testing a column-type bioelectrochemical reactor to stimulate in situ degradation of contaminants through the supply of electrons by a graphite granules biocathode. After a preliminary laboratory characterization and operation with a synthetic feeding solution, a field test is conducted in a real contaminated site, where the reactor demonstrates effective degradation of CAHs and inorganic anions. Notably, the cathodic potential promotes the reductive dechlorination of chlorinated species. Simultaneously, nitrate reduction, sulfate reduction, and methanogenesis occurr, influencing the overall coulombic efficiency of the process. The use of real groundwater, compared to the synthetic medium, significantly decreases the coulombic efficiency of reductive dechlorination, dropping from 2.43% to 0.01%. Concentration profiles along the bioelectrochemical reactor allow for a deeper description of the reductive dechlorination rate at different flow rates, as well as increase the knowledge about reduction and oxidation mechanisms. Scaling up the technology presents several challenges, including the optimization of coulombic efficiency and the management of competing microbial metabolisms. The study provides a valuable contribution toward advancing bioelectrochemical technologies for the bioremediation of complex contaminated sites.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2400683"},"PeriodicalIF":3.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109252","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

Green Hydrogen Peroxide: Advances of Electrocatalytic Generation and Applications in High-Value Chemical Conversion. 绿色过氧化氢：电催化生成及其在高价值化工转化中的应用进展。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-20 DOI: 10.1002/cplu.202500189

Kexin Huang, Haiying Ma, Wei Xiong

{"title":"Green Hydrogen Peroxide: Advances of Electrocatalytic Generation and Applications in High-Value Chemical Conversion.","authors":"Kexin Huang, Haiying Ma, Wei Xiong","doi":"10.1002/cplu.202500189","DOIUrl":"10.1002/cplu.202500189","url":null,"abstract":"The development of environmentally friendly oxidants has emerged as a prominent topic in the fields of green chemistry and chemical engineering. This review comprehensively examines the sustainable production of hydrogen peroxide (H2O2) via electrocatalytic oxygen reduction reaction (ORR) and its applications in green chemical synthesis. H2O2, known as a green oxidant, is generated through the 2e- ORR pathway using various catalysts, including noble metals, carbon-based materials, single-atom catalysts, and transition metal oxides. This method offers an environmentally friendly alternative to traditional H2O2 production, enabling in situ synthesis without organic waste. The review highlights the direct role of H2O2 in promoting chemical transformations, such as the oxidation of alkenes to epoxides and alcohols to carbonyl compounds. Additionally, it explores the indirect application of H2O2 through its decomposition into hydroxyl radicals (•OH) in Fenton reactions, which drive selective oxidation and degradation processes. These applications demonstrate the versatility of H2O2 in advancing green chemistry by facilitating eco-friendly oxidation reactions and pollutant degradation. Future work focuses on improving catalyst stability and scalability for industrial use, further enhancing the sustainability and efficiency of H2O2-based chemical processes.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500189"},"PeriodicalIF":3.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109257","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

Adsorption Mechanisms of Cellulose Derivatives with Different Chemical Nature on Bentonite - pH Perspective. 不同化学性质纤维素衍生物在膨润土上的吸附机理- pH值研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-05-20 DOI: 10.1002/cplu.202500246

Elżbieta Grządka, Ewelina Godek, Jakub Matusiak, Urszula Maciołek, Małgorzata Wasilewska

引用次数: 0