ChemNanoMat最新文献_第2页

Cobalt Doped Iron Based Perovskite Catalysts for Efficient Reduction of Nitrate to Ammonia

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-05 DOI: 10.1002/cnma.202400632

Wahid Meles Syoum, Liyan Niu, Kai Zhang, Haoran Guo, Jun Song Chen, Tingshuai Li

引用次数: 0

High-Performance Ammonia Sensing with Citrus Hystrix-Mediated ZnO Nanoparticles in TFT-Based Devices

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-27 DOI: 10.1002/cnma.202400491

Ashwath Narayana, Mahendra Prashanth K V, Veerabhadraswamy B N, Bharathkumar Mareddi, Santosh Y Khatavi, B L V Prasad, C V Yelamaggad

{"title":"High-Performance Ammonia Sensing with Citrus Hystrix-Mediated ZnO Nanoparticles in TFT-Based Devices","authors":"Ashwath Narayana, Mahendra Prashanth K V, Veerabhadraswamy B N, Bharathkumar Mareddi, Santosh Y Khatavi, B L V Prasad, C V Yelamaggad","doi":"10.1002/cnma.202400491","DOIUrl":"https://doi.org/10.1002/cnma.202400491","url":null,"abstract":"We present a sustainable green synthesis approach for zinc oxide nanoparticles (ZnO NPs) utilizing Citrus hystrix leaf extract and their application as an active medium in a thin film transistor (TFT)-based ammonia gas sensor. For the first time, ZnO NPs derived from Citrus hystrix serve as a receptor layer in a thin film transistor (TFT) device, enabling selective ammonia detection at a significantly reduced initiation temperature. The synthesized ZnO NPs, with a wurtzite structure and an average crystallite size of approximately 14 nm, are deposited onto the TFT sensor without the need for an external conducting layer. The sensor demonstrates excellent sensitivity and selectivity, achieving a maximum response of ~85 % at 20 ppm, with a rapid response time of about 10 seconds at room temperature. Notably, the TFT device exhibits an electron mobility of ~10.2 cm2/V ⋅ s and a high on/off ratio (>10⁴) at room temperature. The sensing mechanism is attributed to the oxidation-reduction interactions between surface-adsorbed oxygen and NH₃ molecules on the ZnO NPs, which modulate the device's electrical conductivity. This work underscores the importance of eco-friendly fabrication of high-performance, durable devices, addressing contemporary environmental and economic concerns.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-27 DOI: 10.1002/cnma.202400649

Parul Sood, Harshita Bagdwal, Krishankant, Arti Joshi, Monika Singh

{"title":"Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability","authors":"Parul Sood, Harshita Bagdwal,  Krishankant, Arti Joshi, Monika Singh","doi":"10.1002/cnma.202400649","DOIUrl":"https://doi.org/10.1002/cnma.202400649","url":null,"abstract":"Oxygen Evolution Reaction (OER) is typically carried out utilizing noble metals and metal oxides based nanostructures. Yet, due to their numerous drawbacks, including high cost, poor stability and negative environmental effects; researchers are driven to create new electro-active materials. To that end, we report an ultrathin 2D Co-MOF [Co2(bpe)2.5(NO3)4(CH3O)] (Co-MOF) that crystallized under hydrothermal conditions, showing a terrific OER activity with an overpotential of 267 mV at the current density of 10 mA cm−2 and the low Tafel slope value of 104 mV dec−1. Two-dimensional MOFs offer numerous advantages over 3D MOFs such as better exposure and accessibility of active sites. The layered structure of 2D MOFs can provide greater structural flexibility, which can be beneficial for accommodating the changes during the OER process and maintaining structural integrity under operating conditions. The performance of Co-MOF surpasses commercially available OER catalyst RuO2, demonstrating an unprecedented prolonged stability of 112 hours, which, to the best of our knowledge, represents the longest stability, observed for any pristine MOF to date. From the post-OER characterization, it was discovered that in situ formed species, Co(OH)2 and CoOOH served as the active sites responsible for oxygen evolution.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Composites of DNA and Boron Cluster-Metal Complexes and their Assembly into Functional Nanoparticles with Gene Silencing Activity

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-24 DOI: 10.1002/cnma.202400606

Krzysztof Śmiałkowski, Katarzyna Bednarska-Szczepaniak, Katarzyna Kulik, Justyna Suwara, Bohumir Grűner, Aleksander Foryś, Barbara Nawrot, Zbigniew J. Leśnikowski

引用次数: 0

Innovative Synthesis and Characterization of Nano Hydroxyapatite: A Potential Adsorbent for Methyl Violet 6B Removal from Aqueous Solutions

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-23 DOI: 10.1002/cnma.202400582

Mustafa Burak Telli, Tugkan Kutlu, Seda Karayünlü Bozbaş, Aybuke Şirin, Tuba Ünügül

{"title":"Innovative Synthesis and Characterization of Nano Hydroxyapatite: A Potential Adsorbent for Methyl Violet 6B Removal from Aqueous Solutions","authors":"Mustafa Burak Telli, Tugkan Kutlu, Seda Karayünlü Bozbaş, Aybuke Şirin, Tuba Ünügül","doi":"10.1002/cnma.202400582","DOIUrl":"https://doi.org/10.1002/cnma.202400582","url":null,"abstract":"In this study, the use of nano Hydroxyapatite (HAp) adsorbent as an adsorbent for the removal of methyl violet 6B (MV 6B) dye from aqueous solution was investigated. Nano adsorbent characterization was carried out by X-Ray Diffractometer (XRD), scanning electron microscopy (SEM), spot energy dispersive spectroscopy (EDS) analyses. The dye removal study was carried out using the classical batch adsorption process. In addition, isotherm, kinetic and thermodynamic adsorption studies were carried out for methyl violet 6B. In adsorption studies, the effects of initial dye concentration (10–40 mg/L), solution pH (2-8), adsorbent dosage (0.5–2.5 mg) and contact time (15–90 min.) on dye removal were investigated. At dye concentration was 10 mg/L, adsorbent dosage was 1 mg, solution pH was 6, contact time was 30 min and ambient temperature 25 °C, the highest MV 6B removal was 95.86 % and 1200 mg/g adsorption capacity was obtained. As a result of adsorption isotherm and kinetic studies, it was observed that the adsorption values obtained from the models were compatible with Langmuir isotherm model and pseudo-second order kinetic model. According to the thermodynamic data obtained, it was determined that the adsorption process was spontaneous and exothermic.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Rise of Zinc||Chalcogen Batteries with Conversion Mechanism

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400631

Zecong Zeng, Bingjie Ran, Mangwei Cui, Fusheng Liu, Yan Huang

引用次数: 0

Synthesis and Characterization of NiWS2/MWCNT Nanohybrids

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400356

J. Olivo-Toledo, E. M. Rivera-Muñoz, M. P. Alonso, G. Alonso-Nuñez, R. Huirache-Acuña

{"title":"Synthesis and Characterization of NiWS2/MWCNT Nanohybrids","authors":"J. Olivo-Toledo, E. M. Rivera-Muñoz, M. P. Alonso, G. Alonso-Nuñez, R. Huirache-Acuña","doi":"10.1002/cnma.202400356","DOIUrl":"https://doi.org/10.1002/cnma.202400356","url":null,"abstract":"The present research work mainly focuses on the synthesis and characterization of NiWS2/MWCNT-f nanohybrids. Multi-walled carbon nanotubes MWCNT-r were previously purified with HCl to obtain MWCNT-p, then were treated with an acid mixture of HNO3 : H2SO4 (6 M) at 1 : 3 v/v to generate functionalization on the surface with oxygen as hydroxylic and carbonyl groups to obtain MWCNT-f. The synthesis of the nanohybrids was carried out by the sequential incipient impregnation method using ammonium thiotungstate (ATT) and nickel chloride as metal precursors. The effect of nickel was evaluated by modifying its atomic ratio with respect to tungsten with values of R= (Ni/Ni+W) equal to 0.3 and 0.5. Subsequently, the nanohybrids were obtained by thermal decomposition in argon atmosphere and an activation method using H2/H2S. Once the nanohybrids were obtained, their structural properties were characterized by Raman spectroscopy, BET, HRTEM, XRD, and TGA analyses. The formation of the nanohybrids was achieved obtaining the active phase WS2 and NiWS supported on MWCNT-f, which was corroborated by HRTEM and XPS spectroscopy techniques. These materials are important candidates as catalysts in the hydrodesulfurization reactions.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Stability of Pt-Co Catalysts Supported on Zeolite Nanosponges for Propane Dehydrogenation

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400527

Dr. Muhammad Numan, Nam Sun Kim, Prof. Changbum Jo

{"title":"Enhanced Stability of Pt-Co Catalysts Supported on Zeolite Nanosponges for Propane Dehydrogenation","authors":"Dr. Muhammad Numan, Nam Sun Kim, Prof. Changbum Jo","doi":"10.1002/cnma.202400527","DOIUrl":"https://doi.org/10.1002/cnma.202400527","url":null,"abstract":"Pt and Co supported on Al2O3, Na+-free SiO2, mesoporous zeolite (MZ-Na+), and Na+-free MZ (MZ-OH) were prepared and investigated for propane dehydrogenation efficacy. These catalysts were characterized using XRD, STEM, CO-FTIR, H2-TPR, and XPS. Of these catalysts, Pt−Co supported on MZ-Na+ and Al2O3 showed low activity and poor stability for propane dehydrogenation (PDH). On the other hand, Pt−Co supported on Na+-free SiO2 or MZ-OH exhibited much greater activity and stability. This high catalytic performance was attributed to the formation of a high degree of alloying between Pt and Co, possibly facilitated by silanol groups. After optimizing cobalt content and catalyst reduction temperature, it was found that 1 wt% Pt-0.8 wt% Co supported on MZ-OH exhibited the best activity with a propane conversion of 64.4 % and propylene selectivity of 76.5 % that remained stable over 24 h on-stream. The correlation between catalyst characterization and PDH results showed that the existence of metallic cobalt on the catalyst surface facilitated coke deposition in the form of CoCx and poor catalyst stability.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of Uniform Electrospun 2-Cyanopyridinium Salicylate – Polyvinyl Alcohol Nanofibersusing Cylindrical Bar Collector for Nonlinear Optical Applications

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400590

Kintali Manohor Prasad, S. Divagar, P. Srinivasan

{"title":"Production of Uniform Electrospun 2-Cyanopyridinium Salicylate – Polyvinyl Alcohol Nanofibersusing Cylindrical Bar Collector for Nonlinear Optical Applications","authors":"Kintali Manohor Prasad, S. Divagar, P. Srinivasan","doi":"10.1002/cnma.202400590","DOIUrl":"https://doi.org/10.1002/cnma.202400590","url":null,"abstract":"The electrospinning technique was used to synthesize nanofibers of organic 2-cynopyridinium salicylate (2-CPSC) molecules embedded in polyvinyl alcohol (PVA) polymer using both a drum collector and an indigenously made parallel bar cylindrical collector unit. The microscopical analysis was performed for the preliminary morphological study of the collected nanofibers using both a drum collector and a parallel bar collector. Scanning electron microscopic (SEM) analysis confirmed the formation of smooth, clear, cylindrical shape, and highly homogenous 2-CPSC – PVA nanofibers collected from the parallel bar collector unit compared to the drum collector, and these homogenous nanofibers were selected for further characterization. X-ray diffraction (XRD) study demonstrates the preferred crystallographic orientation of organic 2-CPSC molecules inside the host PVA polymer. The synthesized nanofibers were characterized using Fourier Transform Infrared (FTIR) Spectroscopy to confirm the presence of different molecular vibrations. Using ultraviolet-visible (UV-Vis) spectroscopic analysis, the complete transparency of the 2-CPSC – PVA nanofiber throughout the visible region is observed, and from Tauc's plot, the obtained optical band gap energy (Eg) is 5.24 eV. The Z-scan technique was employed to investigate the nonlinear absorption coefficient (β), nonlinear refractive index (n2), and third-order nonlinear susceptibility (<math></math>\u0000).","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glycyrrhetinic Acid Prohibiting Fusion Peptides from Fusing with Cell Membrane

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-14 DOI: 10.1002/cnma.202400614

Zili Jia, Rongrong Wu, Yun Hao, Xiaolu Song, Shuai Hou, Changwei Shi, Yihao Cui, Lei Liu, Taofeng Zhu

{"title":"Glycyrrhetinic Acid Prohibiting Fusion Peptides from Fusing with Cell Membrane","authors":"Zili Jia, Rongrong Wu, Yun Hao, Xiaolu Song, Shuai Hou, Changwei Shi, Yihao Cui, Lei Liu, Taofeng Zhu","doi":"10.1002/cnma.202400614","DOIUrl":"https://doi.org/10.1002/cnma.202400614","url":null,"abstract":"The inhibition of the fusion peptide (FP) of the spike protein of coronaviruses, which mediates interactions with the host cell membrane, plays a critical role in the membrane fusion process. In this study, we investigated the interactions between the FP and cell membranes and evaluated the effect of three drug molecules — neferine (Nef), glycyrrhetinic acid (GA), quercetin (Qct) on the membrane fusion process by combining molecular dynamics (MD) simulations and experimental methods. Our findings revealed that glycyrrhetinic acid exhibited strong binding ability towards the FP (residues 815–828), with particularly interactions observed with key residues L821, L822, F823, and L828. Furthermore, we performed FITC fluorescence staining experiments on cells and assessed the inhibitory effects of glycyrrhetinic acid on FP. The results showed a significant reduction in fluorescence intensity in the FP-FITC experiment group treated with glycyrrhetinic acid, indicating that glycyrrhetinic acid interferes with the binding ability of FP and disrupts its localization on the cell membrane. Overall, this research will contribute to a deeper understanding of the inhibition mechanism of FP's membrane fusion process, which widely exists in the intrusion process between viruses and cells.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0