Chemistry methods : new approaches to solving problems in chemistry最新文献

Cover Feature: Plasma Diffuse Reflectance Infrared Fourier Transform Spectroscopy Cell Design and Experimental Set-Up for Operando-DRIFTS Investigations on Plasma-Induced Heterogeneous Catalyzed Reactions (Chem. Methods 10/2025) 覆盖专题：等离子体漫反射红外傅立叶变换光谱研究等离子体诱导非均相催化反应的Operando-DRIFTS细胞设计和实验装置。方法10/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-10-08 DOI: 10.1002/cmtd.70041

Dilver Peña Fuentes, Carl-Julius Mussweiler, Milko Schiorlin, Hans Höft, Abdallah I. M. Rabee, Thanh Huyen Vuong, Robert Franke, Ronny Brandenburg, Christoph Kubis

{"title":"Cover Feature: Plasma Diffuse Reflectance Infrared Fourier Transform Spectroscopy Cell Design and Experimental Set-Up for Operando-DRIFTS Investigations on Plasma-Induced Heterogeneous Catalyzed Reactions (Chem. Methods 10/2025)","authors":"Dilver Peña Fuentes, Carl-Julius Mussweiler, Milko Schiorlin, Hans Höft, Abdallah I. M. Rabee, Thanh Huyen Vuong, Robert Franke, Ronny Brandenburg, Christoph Kubis","doi":"10.1002/cmtd.70041","DOIUrl":"https://doi.org/10.1002/cmtd.70041","url":null,"abstract":"The Cover Feature shows a customized DRIFTS cell based on the Harrick reaction chamber for operando FTIR spectroscopic studies of plasma-assisted heterogeneous catalyzed reactions; it is connected to a mass spectrometer for online quantitative product gas analysis. The nonthermal plasma ignites in the immediate vicinity of the catalyst surface. The performance of the plasma DRIFTS cell has been demonstrated by investigating the plasma-assisted CO2 splitting reaction with CeO2. More information can be found in the Research Article by D. Peña Fuentes, R. Brandenburg, C. Kubis and co-workers (DOI: 10.1002/cmtd.202500057).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>","PeriodicalId":72562,"journal":{"name":"Chemistry methods : new approaches to solving problems in chemistry","volume":"5 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cmtd.70041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: Process Monitoring of Lactone Ring Formation and Opening by Operando Attenuated Total Reflectance Infrared Spectroscopy (Chem. Methods 10/2025) 前封面：用Operando衰减全反射红外光谱法监测内酯环形成和打开的过程（化学）。方法10/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-10-08 DOI: 10.1002/cmtd.70042

Jelle W. Bos, Peter de Peinder, Joris C. L. Janssens, Ramon Oord, Matteo Monai, Eelco T. C. Vogt, Bert M. Weckhuysen

引用次数: 0

Cover Feature: Few Steps, Big Impact: Recent Advances in the Streamlined Synthesis of Multiply Chiral Heterohelicenes with Tunable Optoelectronic Properties (Chem. Methods 9/2025) 封面特征：步骤少，影响大：具有可调谐光电特性的多重手性杂螺旋烯的流线型合成的最新进展。方法9/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-09-05 DOI: 10.1002/cmtd.70030

Mohamed S. H. Salem, Shinobu Takizawa

引用次数: 0

Front Cover: Optimizing Polyoxometalate Electrodes for Energy Storage via Cation Design and Thermal Activation (Chem. Methods 9/2025) 封面：通过阳离子设计和热活化优化多金属氧酸盐储能电极（化学）。方法9/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-09-05 DOI: 10.1002/cmtd.70029

Lucía Vizcaíno-Anaya, Óscar Giner-Rajala, Carlos Herreros-Lucas, Héctor Rodríguez, María del Carmen Giménez-López

引用次数: 0

Cover Feature: Upscaled Synthesis of α- and β-Peptides in a Continuous-Flow Reactor Using Propylene Carbonate as an Eco-Friendly Solvent (Chem. Methods 8/2025) 封面特色：以碳酸丙烯酯为环保溶剂在连续流反应器中规模化合成α-和β-多肽。方法8/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-08-20 DOI: 10.1002/cmtd.70023

Nikolett Varró, Beáta Mándityné Huszka, Eszter Erdei, András Mándoki, István M. Mándity

引用次数: 0

Front Cover: Wettability-Controlled Electrocatalytic Carbon Dioxide Reduction (Chem. Methods 8/2025) 封面：润湿性控制的电催化二氧化碳还原（化学）。方法8/2025)

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-08-20 DOI: 10.1002/cmtd.70022

Lanze Li, Jiexin Wen, Tsz Woon Benedict Lo, Jun Yin, Qiong Lei

引用次数: 0

Optimizing Polyoxometalate Electrodes for Energy Storage via Cation Design and Thermal Activation 通过阳离子设计和热活化优化多金属氧酸盐储能电极

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-08-01 DOI: 10.1002/cmtd.202500046

Lucía Vizcaíno-Anaya, Óscar Giner-Rajala, Carlos Herreros-Lucas, Héctor Rodríguez, María del Carmen Giménez-López

{"title":"Optimizing Polyoxometalate Electrodes for Energy Storage via Cation Design and Thermal Activation","authors":"Lucía Vizcaíno-Anaya, Óscar Giner-Rajala, Carlos Herreros-Lucas, Héctor Rodríguez, María del Carmen Giménez-López","doi":"10.1002/cmtd.202500046","DOIUrl":"10.1002/cmtd.202500046","url":null,"abstract":"Polyoxometalates (POM) are promising materials for electrochemical applications, such as supercapacitors. However, their stability in aqueous electrolytes is compromised due to POM cluster leaching. To mitigate this issue, POM can be combined with organic counter cations, which reduce their solubility in water and influence interactions with carbon support materials. Nevertheless, further research is needed to determine the optimal characteristics and electrode design for maximizing performance. In this work, a synergistic methodology to investigate POM compounds bearing cations with three core functionalities (ammonium, imidazolium, and pyridinium) and varying alkyl side chain lengths, is developed in order to elucidate and optimize the effects of hydrophobicity on the structure of organic–inorganic hybrid materials, electrode films, and their electrochemical performance. The results show that, although cations with long alkyl chains exhibit lower capacitance, they can be activated through molecular rearrangement in the solid state, facilitated by the flexibility of these chains within the structure. By combining thermal and electrochemical techniques, the electrode materials are optimized. These findings demonstrate that the careful selection of counter-cations with the appropriate molecular structures, followed by a thermal activation protocol, is key to developing more efficient and durable energy storage systems.","PeriodicalId":72562,"journal":{"name":"Chemistry methods : new approaches to solving problems in chemistry","volume":"5 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cmtd.202500046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complex Material Analysis of Reverse Painting on Glass by Means of Photography, Microscopy, and Spectroscopic Techniques 用摄影、显微镜和光谱技术分析玻璃上反涂的复杂材料

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-07-31 DOI: 10.1002/cmtd.202500024

Markéta Dumpíková, Anastasiia Ivanova, Romana Kirchnerová, Eva Zikmundová, Zlata Kelar Tučeková, David Pavliňák, Štěpánka Kučková, Gabriela Vyskočilová

{"title":"Complex Material Analysis of Reverse Painting on Glass by Means of Photography, Microscopy, and Spectroscopic Techniques","authors":"Markéta Dumpíková, Anastasiia Ivanova, Romana Kirchnerová, Eva Zikmundová, Zlata Kelar Tučeková, David Pavliňák, Štěpánka Kučková, Gabriela Vyskočilová","doi":"10.1002/cmtd.202500024","DOIUrl":"https://doi.org/10.1002/cmtd.202500024","url":null,"abstract":"Reverse paintings on glass are a group of specific artworks created in a reverse order with respect to conventional paintings. Their material research is particularly demanding because in many cases their dismantling is scarcely possible, limiting sampling and employing more sophisticated methods. Herein, different techniques ranging from noninvasive to destructive are employed in the investigation of two types, folk reverse paintings and reverse paintings with a metallic background. The potential of photography and digital microscopy observation is tested with the aim to help curators and restorers obtain as much information as possible without the need for expensive and hardly accessible analytical techniques. The acquired results were supported and, in some cases, clarified by scanning electron microscopy with energy-dispersive spectrometer analysis of the inorganic components, while organic components are studied by infrared (IR) spectroscopy and liquid chromatography–electrospray ionization–quadrupole time-of-flight mass spectrometry. The assessment of the different IR arrangements is also performed, suggesting the microattenuated total reflection Fourier transform infrared spectroscopy technique the most suitable for the analysis of reverse paintings on glass. The need for the utilization of complementary techniques is also demonstrated on the example of protein binder classification.","PeriodicalId":72562,"journal":{"name":"Chemistry methods : new approaches to solving problems in chemistry","volume":"5 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cmtd.202500024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasma Diffuse Reflectance Infrared Fourier Transform Spectroscopy Cell Design and Experimental Set-Up for Operando-DRIFTS Investigations on Plasma-Induced Heterogeneous Catalyzed Reactions 等离子体漫反射红外傅立叶变换光谱电池设计和实验装置用于Operando-DRIFTS研究等离子体诱导的非均相催化反应

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-07-27 DOI: 10.1002/cmtd.202500057

Dilver Peña Fuentes, Carl-Julius Mussweiler, Milko Schiorlin, Hans Höft, Abdallah I. M. Rabee, Thanh Huyen Vuong, Robert Franke, Ronny Brandenburg, Christoph Kubis

{"title":"Plasma Diffuse Reflectance Infrared Fourier Transform Spectroscopy Cell Design and Experimental Set-Up for Operando-DRIFTS Investigations on Plasma-Induced Heterogeneous Catalyzed Reactions","authors":"Dilver Peña Fuentes, Carl-Julius Mussweiler, Milko Schiorlin, Hans Höft, Abdallah I. M. Rabee, Thanh Huyen Vuong, Robert Franke, Ronny Brandenburg, Christoph Kubis","doi":"10.1002/cmtd.202500057","DOIUrl":"https://doi.org/10.1002/cmtd.202500057","url":null,"abstract":"Herein, the development and application of a customized nonthermal plasma diffuse reflectance infrared Fourier transform spectroscopy cell based on the Harrick reaction chamber is presented, which integrates a miniaturized dielectric barrier discharge (DBD), implemented in a Bruker Invenio S Fourier transform infrared spectroscopy (FTIR) spectrometer. The one-sided closed electrode-tube arrangement, mounted in a PEEK cylindrical holder, is inserted through the observation window. The stable operation of AC-driven (10.6 kHz) dielectric barrier discharges in binary gas mixtures of argon and CO2 is monitored by electrical measurements, which also allows the determination of the discharge power. The gas outlet is connected to a mass spectrometer for online quantitative product gas analysis, enabling operando FTIR spectroscopic studies of plasma-assisted heterogeneous catalyzed reactions. The impact of applied discharge voltage under the variation of the gas composition, gas flow, catalyst pretreatment procedure, and the distance between electrode and catalyst bed has been studied for the CO2 splitting employing CeO2 as a catalyst. The operando FTIR spectroscopic study of the plasma-assisted CO2 dissociation suggests both an active CO2 dissociation on the ceria surface and a plasma-induced reorganization of the catalyst surface structure. The results in terms of calculated specific energy input and CO2 conversion correspond with the trends reported for this transformation in coaxial DBD reactors.","PeriodicalId":72562,"journal":{"name":"Chemistry methods : new approaches to solving problems in chemistry","volume":"5 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cmtd.202500057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Process Monitoring of Lactone Ring Formation and Opening by Operando Attenuated Total Reflectance Infrared Spectroscopy 内酯环形成和打开过程的Operando衰减全反射红外光谱监测

IF 3.6

Chemistry methods : new approaches to solving problems in chemistry Pub Date : 2025-07-22 DOI: 10.1002/cmtd.202500054

Jelle W. Bos, Peter de Peinder, Joris C. L. Janssens, Ramon Oord, Matteo Monai, Eelco T. C. Vogt, Bert M. Weckhuysen

{"title":"Process Monitoring of Lactone Ring Formation and Opening by Operando Attenuated Total Reflectance Infrared Spectroscopy","authors":"Jelle W. Bos, Peter de Peinder, Joris C. L. Janssens, Ramon Oord, Matteo Monai, Eelco T. C. Vogt, Bert M. Weckhuysen","doi":"10.1002/cmtd.202500054","DOIUrl":"https://doi.org/10.1002/cmtd.202500054","url":null,"abstract":"Inline monitoring of chemical processes using spectroscopy is a powerful approach to replace conventional sampling. Spectroscopic data can be used with regression models to determine the endpoint or the onset temperature of reactions and can thus improve the efficiency and economics of processes. Spectroscopic data recorded during reactor operation is often complex, but partial least squares (PLS) is well-suited for dealing with this complexity. Here, we employed in situ attenuated total reflectance infrared (ATR-IR) spectroscopy in the hydrogenation of levulinic acid (LA) into γ-valerolactone (GVL) and operando ATR-IR spectroscopy in the ring-opening of γ-stearolactone (GSL), at high temperatures and pressures. Using PLS, we constructed a model to predict the GVL concentrations from spectra recorded during LA hydrogenation and determined the onset temperature of GVL formation. During the hydrogenation of branched unsaturated fatty acids, we determined the concentrations of the dilute byproduct GSL. The onset temperature of GSL ring-opening could not be determined, due to excessive variance caused by temperature differences during reactor heating, compared to limited variance caused by GSL conversion. We believe that in the oleochemical industry, this methodology can be used as a quality control tool to ensure that the produced branched saturated fatty acid fall within the GSL concentration specification limits.","PeriodicalId":72562,"journal":{"name":"Chemistry methods : new approaches to solving problems in chemistry","volume":"5 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cmtd.202500054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0