ChemistrySelect最新文献_第9页

Recyclable Porous Manganese Substituted Zinc Ferrite Nanoparticles for Efficient Photocatalytic Degradation of Organic Dyes

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202405564

K. V. Kadam, D. B. Malavekar, S. B. Jadhav, V. V. Magdum, Y. M. Chitare, J. L. Gunjakar, Jin Hyeok Kim, V. M. Khot

{"title":"Recyclable Porous Manganese Substituted Zinc Ferrite Nanoparticles for Efficient Photocatalytic Degradation of Organic Dyes","authors":"K. V. Kadam, D. B. Malavekar, S. B. Jadhav, V. V. Magdum, Y. M. Chitare, J. L. Gunjakar, Jin Hyeok Kim, V. M. Khot","doi":"10.1002/slct.202405564","DOIUrl":"https://doi.org/10.1002/slct.202405564","url":null,"abstract":"The degradation of dyes in wastewater via photocatalysis offers a sustainable and effective treatment method, requiring materials with high porosity and suitable band gaps. This study explores manganese (Mn) substitution in zinc ferrite [MnxZn1-xFe2O4] (x = 0–1) to tune porosity and band gap. X-ray diffraction confirmed the crystal structure and Mn incorporation, while TEM showed an average particle size of 54.32 nm. UV–vis diffuse reflectance spectroscopy revealed a red shift in the absorption edge with increasing Mn content, enhancing visible-light responsiveness. Mn substitution increased porosity and reduced the band gap due to lattice strain and new electronic states, improving optical properties. The Mn0.8Zn0.2Fe2O4 (MZ4) catalyst demonstrated outstanding performance, achieving 90%, 90%, and 88% degradation of RhB, MB, and ChT dyes, respectively, under visible-light irradiation within 240 min. These findings highlight the potential of Mn-substituted zinc ferrite nanoparticles for efficient photocatalytic dye degradation.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446999","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

High-Efficiency Photocatalytic Hydrogen Peroxide Production on BiOCl/BiOBr Heterojunction

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202405123

Qing Zhang, Yan Xie, Hanping Fu, Shufen Ren, Jiayun Cheng, Qingshuang Liang, Xiufeng Xiao

{"title":"High-Efficiency Photocatalytic Hydrogen Peroxide Production on BiOCl/BiOBr Heterojunction","authors":"Qing Zhang, Yan Xie, Hanping Fu, Shufen Ren, Jiayun Cheng, Qingshuang Liang, Xiufeng Xiao","doi":"10.1002/slct.202405123","DOIUrl":"https://doi.org/10.1002/slct.202405123","url":null,"abstract":"Photocatalytic hydrogen peroxide production is considered an important technology for alleviating environmental problems and energy scarcity at present. In this work, a series of BiOCl/BiOBr Z-type heterojunctions were successfully synthesized by a facile one-step method. The successful formation of the heterostructure was confirmed through techniques such as XRD, SEM, HRTEM, FTIR, and XPS. Notably, the heterojunction exhibited significantly enhanced photocatalytic performance in hydrogen peroxide production. The best performing sample (BiOCl/BiOBr 2:8) showed the highest hydrogen peroxide concentration of 10.8 mmol/L. PL and EIS results demonstrated the crucial role of the heterojunction in promoting charge transfer and separation during the photocatalytic process, and retaining the strong redox ability of electrons/holes on different active sites. The free radical trapping experiments results and electron spin resonance spectra demonstrated that photocatalytic pathway of the as-prepared heterojunctions was in the dual-channel route, from both oxygen reduction and water oxidation. This work might provide a reliable strategy for photocatalytic hydrogen peroxide production via photocatalysis.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447000","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

Oxidative Dehydrogenation of Coordinated Amines Assisted by Metal Ions

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202405621

Dr. Sachinath Bera

{"title":"Oxidative Dehydrogenation of Coordinated Amines Assisted by Metal Ions","authors":"Dr. Sachinath Bera","doi":"10.1002/slct.202405621","DOIUrl":"https://doi.org/10.1002/slct.202405621","url":null,"abstract":"Oxidative dehydrogenation (OD) of amines involves the elimination of two protons and two electrons ─(2H+ + 2e) that results in the transformation of ─CH─NH─ to ─C═N─ moiety. A variety of amines coordinated to the transition metal ion, including iron, cobalt, nickel, copper, ruthenium, rhodium, and iridium, also rare earth metals undergo OD reaction. The reaction occurs mainly under a basic medium in the presence of air/O2, which is a green oxidant. The metal ions play a significant role in the OD reaction. They can participate in redox reactions as an internal oxidant and can also influence the deprotonation of the ─NH function to form an amido intermediate, crucial for the OD reaction of amines. Not only that, the photosensitized metal ion or metal-stabilized ligand-centered radical activates O2 to promote OD reaction. This review presents the OD reaction of amines that occurred in air/O2 to explore the role of metal ions and fates of O2. The study reveals that along with the oxidation state of the metal ion, other factors like the redox potential of Mn+/M(n−1)+, the geometry of the complex, the coordination mode of the ligand, substituents on the ligand, co-ligands, and steric crowding also influence OD. The different spectroscopies, including single-crystal X-ray diffraction, which is employed to study the OD reactions, are also interpreted.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447003","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

PVP Aided Synthesis and Characterization of Highly Porous CoMn2O4 for Catalytic Soot Oxidation

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202403545

A. L. Vikram, R. Nithya, S. Nethaji, Harshini Dasari

引用次数: 0

Cover Picture: (ChemistrySelect 08/2025)

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202580801

引用次数: 0

Recent Advances on Porous Biochar: From Production to Remediation of Organic Pollutants from Water and Future Perspectives

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202404918

Dongchenyi Wang, Haixia Li, Junyuan Zuo, Xintong Li, Xiao Liu, Jinjun Cai

{"title":"Recent Advances on Porous Biochar: From Production to Remediation of Organic Pollutants from Water and Future Perspectives","authors":"Dongchenyi Wang, Haixia Li, Junyuan Zuo, Xintong Li, Xiao Liu, Jinjun Cai","doi":"10.1002/slct.202404918","DOIUrl":"https://doi.org/10.1002/slct.202404918","url":null,"abstract":"Organic pollutants in aqueous pose a serious threat toward ecosystems and human health, marking them as a pressing global environmental issue. In response to this urgent challenge, scientists have been pursuing efficient methods to minimize their presence, and biochar has been regarded as a promising material. Although some studies have been reported by using biochar to address a specific pollutant, they still lack systematic analysis for biochar synthesis and removal mechanisms for a broad spectrum of pollutants. This paper aims to present a review on recent advances in biochar synthesis and removal of dyes, antibiotics, and pesticides via adsorption and oxidative degradation. The focus is to rationalize factors that control pore size, functional groups, and removal ability as function of feedstocks and synthetic conditions, and temperature is identified as the most critical factor. Modifications, such as doping heteroatoms and metals, are important to enhance the removal ability of biochar. The challenges and opportunities for future biochar exploration are discussed, hoping to inspire more researchers to participate in this fascinating area.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447001","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

The First Case of an Aryl Imination Reaction by Direct Nucleophilic Substitution of Hydrogen: Synthesis of 2-arylimino Derivatives for 1,2-dihydro-1-methyl-5(6,7,8)-nitroquinolines

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-20 DOI: 10.1002/slct.202500278

Diana Y. Pobedinskaya, Oleg P. Demidov, Artem P. Ermolenko, Elena K. Avakyan, Anastasia A. Borovleva, Alexander N. Larin, Ivan V. Borovlev

{"title":"The First Case of an Aryl Imination Reaction by Direct Nucleophilic Substitution of Hydrogen: Synthesis of 2-arylimino Derivatives for 1,2-dihydro-1-methyl-5(6,7,8)-nitroquinolines","authors":"Diana Y. Pobedinskaya, Oleg P. Demidov, Artem P. Ermolenko, Elena K. Avakyan, Anastasia A. Borovleva, Alexander N. Larin, Ivan V. Borovlev","doi":"10.1002/slct.202500278","DOIUrl":"https://doi.org/10.1002/slct.202500278","url":null,"abstract":"The oxidative SNH aryl imination of 1-methyl nitro quinolinium salts is described. The first 2-arylimino derivatives of 1,2-dihydro-1-methyl-5(6,7,8)-nitroquinolines have been synthesized in a one-step reaction (ONSH process) under mild conditions and without preliminary introduction of a leaving group. The resulting products are stable and cannot be obtained via direct interaction of anilines with the corresponding quinolones. The approach found is interesting due to its simplicity of implementation, since the reaction involves the nucleophilic addition of anilines induced by the base, followed by the oxidation of the σH adducts occurring in one pot. This article discusses the synthesis conditions and optimization procedures. We also noted the influence of the position of the nitro group on the reaction yield. A possible reaction mechanism is proposed, supported by the detection of an intermediate product using an NMR experiment. The method's simplicity and retaining the nitro group in the final product offer considerable potential for further structural diversification.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447002","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

Enhanced Adsorption of Malachite Green Dye Using Fe3O4-MgO Nanoparticles Loaded with Phragmites Stems Powder: Characterization, Kinetic, and Isotherm Studies

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-19 DOI: 10.1002/slct.202404163

Samira Chebba, Dr. Asma Boudaoud, Prof. Mebrouk Djedid, Prof. Mokhtar Benalia, Amel Soltani, Dr. Imane Nouacer

{"title":"Enhanced Adsorption of Malachite Green Dye Using Fe3O4-MgO Nanoparticles Loaded with Phragmites Stems Powder: Characterization, Kinetic, and Isotherm Studies","authors":"Samira Chebba, Dr. Asma Boudaoud, Prof. Mebrouk Djedid, Prof. Mokhtar Benalia, Amel Soltani, Dr. Imane Nouacer","doi":"10.1002/slct.202404163","DOIUrl":"https://doi.org/10.1002/slct.202404163","url":null,"abstract":"A novel adsorbent was produced from Phragmites australis stems (Ph-St) into a magnetic nanocomposite (Ph-St/Fe3O4-MgO) through chemical treatment for effective removal of malachite green (MG) from aqueous medium. Characterization via SEM, EDX, FTIR, BET, and XRD confirmed the efficient deposition of Fe3O4-MgO magnetic nanoparticles on Ph-St, forming a cubic spinel structure. The BET surface areas were 4.4985 m2/g for Ph-St and 8.8789 m2/g for Ph-St/Fe3O4-MgO. The nitrogen (N2) adsorption isotherm was classified as type IV. The effect of several factors on adsorption was examined, including temperature, dose, pH, and contact time. Adsorption experiments showed optimal MG removal at pH 7, with an equilibrium time of 20 min. Kinetic analysis revealed that the pseudo-second-order (PSO) model best described the adsorption process compared to the pseudo-first-order (PFO) and intraparticle diffusion (IPD) models. Experimental data for the Ph-St adsorbent correspond well to the Langmuir model and the Freundlich model for Ph-St/Fe3O4-MgO at the optimum temperature of 328 K, with maximum adsorption capacities of 33.823 and 104.711 mg/g, respectively. Positive ΔH° and ΔS° values indicated an endothermic and disordered process. The ΔG° values indicate spontaneous adsorption for both adsorbents. These results suggest that magnetic nanocomposites provide an effective solution for reducing water pollution.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447189","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

Binding Mechanism Between Iron-Related Proteins (Catalase and Transferrin) and Favipiravir

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-19 DOI: 10.1002/slct.202404870

Somaye Shahraki, Fereshteh Shiri, Razieh Nejat, Ameneh Heidari, Zohreh Razmara, Kobra Shahraki

{"title":"Binding Mechanism Between Iron-Related Proteins (Catalase and Transferrin) and Favipiravir","authors":"Somaye Shahraki, Fereshteh Shiri, Razieh Nejat, Ameneh Heidari, Zohreh Razmara, Kobra Shahraki","doi":"10.1002/slct.202404870","DOIUrl":"https://doi.org/10.1002/slct.202404870","url":null,"abstract":"The study of protein-drug interactions has become important in describing drug properties. Favipiravir (Fav) is an RNA polymerase inhibitor used to treat a wide range of influenza viruses. This drug, which is taken orally, can be quickly and widely absorbed in the body. Here, the interaction of Fav with two Fe-related proteins, Catalase (CAT) and Transferrin (TF), was investigated by spectroscopic and molecular docking methods. The results showed that Fav can strongly interact with two Fe-proteins and quench their intrinsic fluorescence through a static mechanism. The affinity of Fav to CAT and TF was almost close to each other and with the order of 106 M−1 (Kb = 9.54 × 106 M−1 for Fav-TF and 10.71 × 106 M−1 for Fav-CAT at 310 K). The binding of the Fav to the proteins changed their conformation to some extent and the stability of the proteins decreased. Molecular docking results showed the best binding site of Fav on both TF and CAT along with the types of interactions involved. Hydrogen bonds and van der Waals interactions were the predominant forces observed between Fav and the two proteins. Accessible surface area strongly supports the successful binding of Fav to both TF and CAT.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447186","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

Applications of Magnetic Nanocomposites and Their Role in Advancing Lateral Flow Assays

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-02-19 DOI: 10.1002/slct.202405827

Ehsan Sanattalab, Ezgi Ayni, Kubra Kaya, Nimet Yildirim-Tirgil

{"title":"Applications of Magnetic Nanocomposites and Their Role in Advancing Lateral Flow Assays","authors":"Ehsan Sanattalab, Ezgi Ayni, Kubra Kaya, Nimet Yildirim-Tirgil","doi":"10.1002/slct.202405827","DOIUrl":"https://doi.org/10.1002/slct.202405827","url":null,"abstract":"This article explores the wide-ranging applications of magnetic nanocomposites and their critical role in advancing lateral flow assays (LFAs) as diagnostic tools. We begin by reviewing a diverse array of magnetic nanomaterials, including magnetic plasmonic, polymer, carbon, and silica-based nanocomposites, as well as notable examples such as CoFe₂O₄, magnetic quantum dots, lipid-based nanoparticles, hydrogels, metal–organic frameworks (MOFs), superparamagnetic iron oxide nanoparticles (SPIONs), and gold nanorods. Each type of nanocomposite is examined for its unique properties and significant potential in enhancing sensitivity, stability, and multifunctionality. These nanocomposites are used across various sectors, such as medical diagnostics, environmental monitoring, and imaging technology, where they contribute to improved signal strength, binding affinity, and biocompatibility. The article focuses specifically on the application of magnetic nanocomposites in LFAs. These assays rely on magnetic nanoparticles’ interactions with target molecules to achieve detection, providing a promising platform for point-of-care diagnostics. The integration of magnetic nanoparticles enhances detection limits, improves precision, and reduces response times, making them an invaluable component in rapid diagnostic tests. By embedding magnetic nanocomposites into LFAs, researchers and clinicians can achieve more reliable and accurate results, facilitating early diagnosis and ultimately improving patient outcomes. Their integration into LFAs demonstrates significant potential for various diagnostic applications, from early disease detection to real-time environmental monitoring, suggesting a transformative impact on point-of-care diagnostics and beyond.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 7","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438793","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