ChemNanoMat最新文献_第4页

Hydrothermally Synthesized Cobalt-Doped NiO Nanoflakes: Enhanced Electrochemical Performance for High-Performance Supercapacitors

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-09 DOI: 10.1002/cnma.202400580

Suresh Jayakumar, P. Chinnappan Santhosh, K. V. Rishikesh, A. V. Radhamani

{"title":"Hydrothermally Synthesized Cobalt-Doped NiO Nanoflakes: Enhanced Electrochemical Performance for High-Performance Supercapacitors","authors":"Suresh Jayakumar, P. Chinnappan Santhosh, K. V. Rishikesh, A. V. Radhamani","doi":"10.1002/cnma.202400580","DOIUrl":"https://doi.org/10.1002/cnma.202400580","url":null,"abstract":"This study examines cobalt-doped nickel oxide (Co-NiO) nanomaterials synthesized through a hydrothermal method, focusing on their potential as high-performance electrodes for supercapacitors. By varying cobalt dopant concentrations (X=0, 0.01, 0.05, 0.1), we aimed to enhance the electrochemical properties through strategic Co-doping. The CoxNi1-xO nanomaterials were characterized using several techniques, including X-ray diffraction (XRD), UV-visible spectroscopy, field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS). The analysis showed that Co-doping preserved the NiO phase structure while significantly altering the morphology and electrochemical characteristics. The sample with (X=0.1) achieved a specific capacitance of 880 F/g at a current density of 1 A/g, significantly outperforming the undoped NiO, which had a capacitance of 335 F/g. Additionally, the Co-NiO demonstrated 83.3 % capacitance retention after 1000 cycles at a current density of 10 A/g. These findings highlight the potential of Co-NiO as an effective electrode material for supercapacitors.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404518","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

Perfectly Hexagonal Sponge-Like NiO-NiCo2O4 with Rich Electromicrostructural Physiognomies for High-Efficiency Electrocatalytic Urea Oxidation

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-09 DOI: 10.1002/cnma.202400476

Siddhant Srivastav, Mahesh Kumar Paliwal, Sumanta Kumar Meher

{"title":"Perfectly Hexagonal Sponge-Like NiO-NiCo2O4 with Rich Electromicrostructural Physiognomies for High-Efficiency Electrocatalytic Urea Oxidation","authors":"Siddhant Srivastav, Mahesh Kumar Paliwal, Sumanta Kumar Meher","doi":"10.1002/cnma.202400476","DOIUrl":"https://doi.org/10.1002/cnma.202400476","url":null,"abstract":"In order to design high-efficiency electrocatalysts for the development of urea oxidation reaction (UOR)-based energy conversion and storage systems, herein, a very facile and kinetically controlled material growth strategy has been strategized to prepare extremely uniform and perfectly hexagonal sponge-like NiO-NiCo2O4 with high BET surface area (126 m2 g−1), monomodal distribution of mesopores (~3.9 nm), hierarchical surface as well as matrix porosity, mixed-phase lattice structure, thorough atomic non-stoichiometry and multiple valency of Ni and Co (i. e. Ni2+, Ni3+, Co2+ and Co3+). The potential of NiO-NiCo2O4 is thoroughly explored for electrocatalytic UOR in alkaline electrolyte medium. The in-depth electrochemical analyses demonstrate rich redox reversibility, high UOR current density, very-low charge transfer and series resistance, and typical Warburg response indicative of facilitated diffusion of electrolyte ions during electrocatalytic UOR. Furthermore, the NiO-NiCo2O4 requires lower overpotential for effective UOR and exhibits minimal current loss during electrocatalytic UOR for prolonged duration. Proposedly, the multiple oxidation states of Ni and Co in NiO-NiCo2O4, combined with its rich physicoelectrochemical physiognomies, offer lowly-impeded electrolyte ion intercalation-deintercalation, good electronic conductivity, higher number of accessible redox active sites, facile adsorption of urea on the electrocatalytic sites and inhibition in the blockage of active sites by side products to augment the overall UOR kinetics. The optimized approach presented in this study is poised to advance the catalyst systems for UOR, which will lead to the development of high-efficiency urea-based energy conversion and storage systems for prospective integration in contemporary electronic architectures.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404561","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

Front Cover: Trichosanthes Cucumerina Derived Activated Carbon: The Potential Electrode material for High Energy Symmetric Supercapacitor (ChemNanoMat 12/2024) 封面：葫芦瓜衍生活性炭：高能对称超级电容器的电位电极材料（ChemNanoMat 12/2024）

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-07 DOI: 10.1002/cnma.202481201

Anit Joseph, Arshitha Mathew, Tiju Thomas

引用次数: 0

Improved Piezocatalytic Performance of Cs/KNN Decorated with CuS Nanoparticles for Dye Degradation

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-02 DOI: 10.1002/cnma.202400543

YuLong Fan, YingJie Chen, Ruihang Zhang, JianMei Ren, Guan Wang

引用次数: 0

Hierarchical Porous Rod-Like In2S3/In2O3 Structures for Trimethylamine Detection

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-01 DOI: 10.1002/cnma.202400507

Dan Meng, Yubo Pan, Lei Zhang, Yue Zhang, Chun He, Kai Tao, Size Li, Xiaoguang San

{"title":"Hierarchical Porous Rod-Like In2S3/In2O3 Structures for Trimethylamine Detection","authors":"Dan Meng, Yubo Pan, Lei Zhang, Yue Zhang, Chun He, Kai Tao, Size Li, Xiaoguang San","doi":"10.1002/cnma.202400507","DOIUrl":"https://doi.org/10.1002/cnma.202400507","url":null,"abstract":"Trimethylamine (TMA), a volatile gas possessing a strong, pungent odor, is widely recognized as an indicator for evaluating fish freshness. Despite the importance of TMA detection, the development of sensors that simultaneously possess high sensitivity, fast response kinetics, selectivity, and low-temperature operation remains a challenge. To address this issue, this work presents a novel gas-sensing material composed of porous, rod-like In2S3/ In2O3 structures, synthesized via an in-situ sulfurization process. By precisely modulating the sulfurization state of In2O3 through the adjustment of thioacetamide concentrations, the material's structural and compositional properties were optimized for enhanced sensing performance. Experimental results demonstrate that sulfur incorporation significantly improves sensor capabilities, owing to the synergistic effects of the In2S3/ In2O3 heterojunction, the enhanced adsorption capacity for oxygen molecules, and the distinctive one-dimensional and porous architecture. Notably, the sensor with an S/In molar ratio of 1/3 exhibited exceptional TMA detection at 150 °C, with the highest response values (2.17 for 0.1 ppm and 8.17 for 10 ppm), rapid response/recovery times, excellent selectivity, and a low detection limit of 0.05 ppm. Moreover, the sensor demonstrated outstanding reproducibility and long-term stability, highlighting its potential for practical applications in seafood freshness monitoring.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110187","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

Facile Fabrication of Poly(Acrylic Acid)-Functionalised Nickel-Metal-Organic Frameworks Nanoplates for Electrochemical Immunosensor for the Detection of Prostate-Specific Antigen

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-11-29 DOI: 10.1002/cnma.202400569

John Alake, Zondi Nate, Darko Kwabena Adu, Blessing Wisdom Ike, Ruchika Chauhan, Atal Gill, Rajshekhar Karpoormath

{"title":"Facile Fabrication of Poly(Acrylic Acid)-Functionalised Nickel-Metal-Organic Frameworks Nanoplates for Electrochemical Immunosensor for the Detection of Prostate-Specific Antigen","authors":"John Alake, Zondi Nate, Darko Kwabena Adu, Blessing Wisdom Ike, Ruchika Chauhan, Atal Gill, Rajshekhar Karpoormath","doi":"10.1002/cnma.202400569","DOIUrl":"https://doi.org/10.1002/cnma.202400569","url":null,"abstract":"The Current study proposes the first application of nanoplate poly(acrylic acid)-modified Nickel-2-Amino-1,4-benzene dicarboxylic (PAA−Ni−NH2BDC) for quantifying PSA in serum. The MOF surface was functional with poly(acrylic acid) (PAA) to supply carboxylic groups. Anti-PSA antibodies were immobilised onto the modified electrode using EDC-NHS chemistry facilitated by the carboxylic groups supplied by PAA. Differential pulse voltammetry was used to study the sensor's performance towards prostate-specific antigen using 2.5 mM Fe (CN)6]3−/[Fe(CN)6]4− in 0.01 M PBS as a redox probe. The immunosensor exhibited a detection limit of 1.0×10−13 μg/L with a wide linear range of 10−13 to 10−3 μg/L. The MOF′s high surface area and large pore sizes allowed the material to adsorb large quantities of the anti-PSA antibodies for enhanced performance. Furthermore, the results from the proposed technique were highly reproducible. The PAA-NI-MOF may be useful for early prostate cancer detection in clinical diagnosis and monitoring.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120547","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

Hierarchical Architectures by Hybridizing Ru Nanoparticles with Nitrogen/Oxygen Dual-Doped Carbon Nanotubes for Advanced Hydrogen Evolution Reaction Performance

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-11-29 DOI: 10.1002/cnma.202400571

Yan Han, Yanhui Lu, Xu Yu

{"title":"Hierarchical Architectures by Hybridizing Ru Nanoparticles with Nitrogen/Oxygen Dual-Doped Carbon Nanotubes for Advanced Hydrogen Evolution Reaction Performance","authors":"Yan Han, Yanhui Lu, Xu Yu","doi":"10.1002/cnma.202400571","DOIUrl":"https://doi.org/10.1002/cnma.202400571","url":null,"abstract":"Developing highly efficient and stable electrocatalysts is critical for advancing hydrogen evolution reactions (HER) for hydrogen production. Herein, we report a facile approach to fabricating a hierarchical catalyst featuring ruthenium (Ru) nanoparticles uniformly integrated with nitrogen/oxygen co-doped carbon nanotube aerogels (Ru-NOCAs). Heteroatoms N and O-modified CNTs can result in a negatively charged surface to effectively trap Ru3+ ions. Ru-NOCAs exhibit a well-defined hierarchical morphology facilitated by the self-assembly of functional groups on the surface of CNTs, which enhances the interaction between Ru nanoparticles and CNTs. Due to the synergistic effect of hierarchical structure and strong interaction formation, Ru-NOCAs show excellent catalytic activity and stability. Ru-NOCAs catalyst demonstrates a remarkable overpotential of 41 mV at 10 mA cm−2 with a Tafel slope of 57 mV dec−1 in 1 M KOH and an overpotential of 68 mV with a Tafel slope of 65.8 mV dec−1 in 0.5 M H2SO4. These results indicate superior catalytic efficiency and enhanced charge transfer kinetics compared to the control samples. This study highlights the effectiveness of incorporating hierarchical structures and tailored surface chemistries in electrocatalyst design, offering new avenues for optimizing HER performance and advancing hydrogen fuel technology.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120550","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

Reductive Depolymerization of Lignin to Aromatic Compounds over Promoted Nickel Catalysts in Sub- and Supercritical Methanol

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-11-28 DOI: 10.1002/cnma.202400222

Julia Parker, Eduardo Santillan-Jimenez, Anne E. Harman-Ware, Great C. Umenweke, Olivier Heintz, Gilles Caboche, Mark Crocker

{"title":"Reductive Depolymerization of Lignin to Aromatic Compounds over Promoted Nickel Catalysts in Sub- and Supercritical Methanol","authors":"Julia Parker, Eduardo Santillan-Jimenez, Anne E. Harman-Ware, Great C. Umenweke, Olivier Heintz, Gilles Caboche, Mark Crocker","doi":"10.1002/cnma.202400222","DOIUrl":"https://doi.org/10.1002/cnma.202400222","url":null,"abstract":"The use of γ-Al2O3-supported Ni catalysts promoted with either Cu or Fe was investigated for the reductive catalytic fractionation (RCF) of hybrid poplar in methanol at 200 and 250 °C. The effectiveness of lignin depolymerization was quantified in terms of the lignin oil production, the quantity and distribution of identifiable monomers present in the lignin oil, and the yield of residual solids. All of the Ni-based catalysts tested provided improved yields of lignin oil and monomers, along with reduced char formation, relative to blank (sans catalyst) runs. The highest monomer yield of 51 % was obtained at 250 °C over a 20 wt.% Ni-5 wt.% Cu/Al2O3 catalyst, the improved performance obtained through Cu promotion being attributed to the ability of Cu to facilitate NiO reduction, resulting in an increased amount of Ni0 on the catalyst surface and, consequently, improved hydrogenation activity. The main monomers formed were propanol-, propyl- and propenyl-substituted guaiacol and syringol, the S/G ratio of the products corresponding closely to that in the native lignin.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120414","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

An Interesting Nanoparticle-Ligand Interaction Between Porphyrins and Gold Nanorods Leads to Luminescent Mesostructures

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-11-26 DOI: 10.1002/cnma.202400502

Angela Candreva, Caterina Damiano, Massimo La Deda, Emma Gallo, Oreste De Luca, Tommaso Caruso, Antonello Nucera, Irene Barba Castagnaro, Marco Castriota

{"title":"An Interesting Nanoparticle-Ligand Interaction Between Porphyrins and Gold Nanorods Leads to Luminescent Mesostructures","authors":"Angela Candreva, Caterina Damiano, Massimo La Deda, Emma Gallo, Oreste De Luca, Tommaso Caruso, Antonello Nucera, Irene Barba Castagnaro, Marco Castriota","doi":"10.1002/cnma.202400502","DOIUrl":"https://doi.org/10.1002/cnma.202400502","url":null,"abstract":"In this study, we aim to investigate the family of porphyrins from a novel perspective. In particular, we focus on their role in controlling the assembly of gold nanorods (AuNRs) through a synthetic approach. Using a seed-mediated growth method, AuNRs were first synthesized. Then, the surfaces of the AuNRs were functionalized with four different types of porphyrins to explore their unique influence on the assembly process. Two pairs of porphyrins were synthesized: the metal-free porphyrins 1 and 2 and the two corresponding zinc complexes Zn(1) and Zn(2). Compounds 1 and Zn(1) bind to the nanoparticle surface via an amine group, 2 and Zn(2) via a carbon-carbon triple bond. A careful photophysical and morphological characterization has been carried out on the different samples, and interestingly, we observed that metal-free porphyrins 1 and 2 promote nanoparticle assembly, forming luminescent mesostructures. Porphyrin 2 preferentially organizes nanorods by end-to-end assembly, whereas porphyrin 1 does not confer a preferential organization.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400502","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119576","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

Design and Construction of an Artificial Light-Harvesting System Based on Polyacrylic Acid and a Cyanostilbene Derivative

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-11-22 DOI: 10.1002/cnma.202400501

Prof. Dr. Qunpeng Duan, Dengli Chen, Qiaona Zhang, Shihao Lin, Rong Zeng, Prof. Dr. Tangxin Xiao

引用次数: 0