Materials Chemistry and Physics最新文献_第7页

Sensitive determination of hydroquinone and catechol using an electrochemical sensor based on nitrogen-doped malic acid carbon quantum dots 利用基于掺氮苹果酸碳量子点的电化学传感器灵敏测定对苯二酚和邻苯二酚

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-22 DOI: 10.1016/j.matchemphys.2024.130077

Cheng Rong , Yanmei Huang , Xinyu Zheng

{"title":"Sensitive determination of hydroquinone and catechol using an electrochemical sensor based on nitrogen-doped malic acid carbon quantum dots","authors":"Cheng Rong , Yanmei Huang , Xinyu Zheng","doi":"10.1016/j.matchemphys.2024.130077","DOIUrl":"10.1016/j.matchemphys.2024.130077","url":null,"abstract":"<div><div>This study introduces an advanced electrochemical sensor fabricated by immobilizing nitrogen-doped malic acid carbon quantum dots (N-MCQDs) onto a glassy carbon electrode (GCE) via microwave-assisted synthesis and electrodeposition. The N-MCQDs were comprehensively characterized using high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM), confirming their successful synthesis and uniform distribution on the GCE surface. The N-MCQDs-modified GCE electrode (N-MCQDs/GCE) sensor displayed a remarkable linear detection range of 1–500 μM for hydroquinone (HQ) and 1–200 μM for catechol (CC), with ultra-low detection limits of 0.18 μM for HQ and 0.13 μM for CC. It also exhibits commendable stability, interference resistance, and the capability to accurately measure in complex real sample. These superior characteristics were attributed to the enhanced electrical conductivity and increased active sites due to nitrogen doping. This study not only broadens the application spectrum of carbon quantum dots but also offers a novel perspective for the design of high-performance electrochemical sensors for environmental analysis.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130077"},"PeriodicalIF":4.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Enriched photocatalytic degradation of methylene orange dye using carbon quantum dots surface-decorated TiO2 nanocomposites 利用碳量子点表面装饰的 TiO2 纳米复合材料富集亚甲基橙染料的光催化降解能力

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-21 DOI: 10.1016/j.matchemphys.2024.130049

Asrianti B.T. Sunardi , Fadhillah Choirunnisa , Atika S.P. Dewi , Hendri Widiyandari , Yayuk Astuti , Osi Arutanti , Ali A. Salim , Nandang Mufti

{"title":"Enriched photocatalytic degradation of methylene orange dye using carbon quantum dots surface-decorated TiO2 nanocomposites","authors":"Asrianti B.T. Sunardi , Fadhillah Choirunnisa , Atika S.P. Dewi , Hendri Widiyandari , Yayuk Astuti , Osi Arutanti , Ali A. Salim , Nandang Mufti","doi":"10.1016/j.matchemphys.2024.130049","DOIUrl":"10.1016/j.matchemphys.2024.130049","url":null,"abstract":"<div><div>Complex molecules in methylene orange (MO) dye-contaminated water are carcinogenic and mutagenic risks to human health. Carbon quantum dot surface-decorated titanium dioxide nanocomposites (CQD-TiO<sub>2</sub> NCs) were synthesized via a sustainable hydrothermal method at concentrations of 1.5–3 mL. These NCs exhibits superior electron transfer, light harvesting capabilities, high stability, easy modification, optical characteristics, and photocatalytic properties. The surface morphology, porosity, physiochemical, and optical features of these CQD-TiO<sub>2</sub> NCs were characterized using TEM, UV–Vis, PL, BET, BJH micromeritics, pHzpc, and photoelectrochemical measurements. The prepared NCs were evaluated against the photocatalytic degradation of MO dye molecules using a solar simulator system. The TEM revealed ultra-sensitive and tiny CQD materials with graphite phases ranging from 5 to 10 nm and attached to the octahedron surface of TiO<sub>2</sub> NCs. The PL analysis observed three distinct emission peaks in the visible region, attributed to the near band edge, interstitial (<em>Ti</em><sub><em>i</em></sub>), and oxygen vacancy (<em>V</em><sub><em>0</em></sub>). The BET and BJH analyses were conducted to determine the N<sub>2</sub> adsorption-desorption surface area and mesoporous structure with pore sizes ranging from 2 to 50 nm. These NCs showed excellent photocatalytic performance, effectively degrading MO up to 99.00 % in a 3 mL variation, indicating that they could be a great candidate for photocatalytic purification of wastewater containing MO dyes.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130049"},"PeriodicalIF":4.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The differential influence of biochar and graphite precursors on the structural, optical, and electrochemical properties of graphene oxide 生物炭和石墨前驱体对氧化石墨烯结构、光学和电化学特性的不同影响

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130070

Hamidatu Alhassan , Voo Nyuk Yoong , Ying Woan Soon , Anwar Usman , Muhammad Saifullah Abu Bakar , Ashfaq Ahmed , Montri Luengchavanon

{"title":"The differential influence of biochar and graphite precursors on the structural, optical, and electrochemical properties of graphene oxide","authors":"Hamidatu Alhassan , Voo Nyuk Yoong , Ying Woan Soon , Anwar Usman , Muhammad Saifullah Abu Bakar , Ashfaq Ahmed , Montri Luengchavanon","doi":"10.1016/j.matchemphys.2024.130070","DOIUrl":"10.1016/j.matchemphys.2024.130070","url":null,"abstract":"<div><div>This study investigates the synthesis and characterization of graphene oxide (GO) derived from two distinct precursors: graphite and pyrolyzed acacia wood sawdust via a modified Hummers method. As hypothesized, the commercial graphite-derived GO (GO<sub>G</sub>) exhibited a more ordered structure characterized by a well-defined diffraction peak with interlayer separation of 0.86 nm and crystalline order of 8.18 nm, consistent with extensive oxidation. Conversely, the biochar-derived GO (GO<sub>B</sub>) displayed a heterogenous structure with a less defined (001) plane and an emerging (002) plane corresponding to mixed hybridization states (sp<sup>2</sup>/sp<sup>3</sup>) and mixed crystallinity at different regions in the materials. Additionally, it retained excess aromatic carbons (C–H bond) on its basal plane increasing its disorderliness and defect density. As a result, despite the G bands showing greater incorporation of functional groups in GO<sub>G</sub>, GO<sub>B</sub> recorded a higher I<sub>D</sub>/I<sub>G</sub> ratio (0.95 vs. 0.93). By retaining a relatively higher proportion of sp<sup>2</sup> domains, GO<sub>B</sub> demonstrated enhanced light absorption through additional electronic transmission evident by its lower bandgap energy (2.93) compared to GO<sub>G</sub> (4.20), extending absorption into the visible range. Its improved properties were further characterized by enhanced conductivity, surface area, porosity, and decreased charge transfer and ion diffusion resistance. The study emphasizes that the nature of defects and their distribution, influenced by the precursor material can influence GO properties than those predicted by oxidation levels alone. It opens a new pathway to exploring bio-precursors and their potential in tailoring the properties of GO for specific applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130070"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 and EMI shielding study of Ni (II) semicarbazone driven nickel nanoparticles 镍 (II) 半咔唑酮驱动的镍纳米粒子的合成和电磁干扰屏蔽研究

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130064

Mruganchali A. Joshi, Pawan K. Khanna, Naeem Mohammad, Prasad Ganesh Joshi

{"title":"Synthesis and EMI shielding study of Ni (II) semicarbazone driven nickel nanoparticles","authors":"Mruganchali A. Joshi, Pawan K. Khanna, Naeem Mohammad, Prasad Ganesh Joshi","doi":"10.1016/j.matchemphys.2024.130064","DOIUrl":"10.1016/j.matchemphys.2024.130064","url":null,"abstract":"<div><div>Herein, we report the synthesis of nickel nanoparticles (Ni-NPs) from Ni (II) complexes of cyclic semicarbazone derivatives and their electromagnetic interference (EMI) shielding behaviour. Ni (II) complexes of cyclic semicarbazones were synthesized and characterized by various spectroscopic tools. It was observed that such complexes are excellent precursors for the synthesis of Ni-NPs when reduced by hydrazine hydrate. It is expected that the reaction kinetics will be ably normalized by the presence of semicarbazone ligand and that upon dissociation and partial consumption during nano-particle formation, will provide an added advantage of mild functionality around the particles. Overall various nickel complexes obtained from cyclic semicarbazones were tested as an effective precursor for the synthesis of Ni-NPs which were characterized by XRD, TEM, SEM, and AFM, and their magnetic behaviour was studied by VSM. EMI shielding efficiency of flexible Ni/PVA composite films showed shielding efficiency of about minus (−) 30 dB in X-band (8–12 GHz) for about 25 % loading in the PVA matrix.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130064"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 and characterization of ZnO and CuO coatings for antibacterial and antiviral applications 用于抗菌和抗病毒的氧化锌和氧化铜涂层的合成与表征

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130071

Zied Mannai , Wiem Bouslama , Ines Karkouch , Lamjed Bouslama , Kaouther Khlifi , Khalil Aouadi , Fatma Nouira

{"title":"Synthesis and characterization of ZnO and CuO coatings for antibacterial and antiviral applications","authors":"Zied Mannai , Wiem Bouslama , Ines Karkouch , Lamjed Bouslama , Kaouther Khlifi , Khalil Aouadi , Fatma Nouira","doi":"10.1016/j.matchemphys.2024.130071","DOIUrl":"10.1016/j.matchemphys.2024.130071","url":null,"abstract":"<div><div>Copper oxide (CuO) and Zinc oxide (ZnO), coating have attracted attention for their potential antiviral properties, including their ability to combat virus. This study focuses on the development and characterization of self-disinfecting surface passivation films composed of CuO and ZnO, obtained using the spin-coating technique. The research aims to develop surfaces that can actively eliminate harmful microorganisms, reducing the risk of infections, while also offering strong mechanical resistance and adhesion to withstand external factors, which is crucial for ensuring long-term effectiveness. Additionally, the microstructural properties of the elaborated films were analyzed using SEM/EDS, which stands for Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy and X-Ray diffraction analysis (XRD). The mechanical behavior was assessed through Vickers hardness and scratch resistance tests. It was found a dense and homogeneous thin films. The hardness of CuO and ZnO films were 11.14 ± 0.04 GPa, and 8.89 ± 0.04 GPa respectively. Therefore, scratching tests revealed high adhesion properties with a critical load L<sub><strong>C1</strong></sub> of 1.89 ± 0.02 N and 1.04 ± 0.02 N for CuO and ZnO films respectively. Then, this study revealed that CuO and ZnO films exhibit excellent antimicrobial activity against Staphylococcus aureus ATCC 29213, as well as outstanding antiviral activity against the HSV-2 virus.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130071"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Antibacterial and wound healing activity of non-thermal plasma treated and MXene (Ti3C2TX)/ WO3 coated cotton fabrics 非热等离子体处理和 MXene (Ti3C2TX)/WO3 涂层棉织物的抗菌和伤口愈合活性

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130072

Udaya Vaka, M.C. Ramkumar

{"title":"Antibacterial and wound healing activity of non-thermal plasma treated and MXene (Ti3C2TX)/ WO3 coated cotton fabrics","authors":"Udaya Vaka, M.C. Ramkumar","doi":"10.1016/j.matchemphys.2024.130072","DOIUrl":"10.1016/j.matchemphys.2024.130072","url":null,"abstract":"<div><div>In this study, MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>)/WO<sub>3</sub> nanocomposite was directly deposited on the surface of non-thermal plasma treated cotton fabrics. Initially, argon was used as a plasma forming gas to treat the surface of cotton fabrics. Subsequently, the MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>)/WO<sub>3</sub> nanocomposite was deposited on the surface of non-thermal plasma treated cotton fabrics by co-precipitation method. As prepared cotton fabrics were characterized by various characterization techniques that includes, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) analysis, and Contact Angle (CA) measurement. SEM and FTIR analysis confirmed the presence of MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>)/WO<sub>3</sub> nanocomposite on the surface of cotton fabrics. In addition, contact angle analysis unveiled the super hydrophilic nature of cotton fabrics after surface modification. The antibacterial activity and the wound healing assay of the untreated and surface modified cotton fabrics were examined by <em>in vitro</em> analysis. Results unveiled that the surface modified cotton fabrics showed excellent antibacterial activity against gram-negative bacteria (<em>Escherichia coli</em>) and gram-positive bacteria (<em>Staphylococcus aureus</em>) and substantial wound healing activity. From this investigation it is inferred that plasma treated and nanocomposite functionalised cotton fabrics have the potential to be employed as wound dressing material.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130072"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nanostructural evolution by applying various fuels in combustion design of CuZnAl mixed-oxides over HZSM-5 used in one-step production of CH3–O–CH3 在一步法生产 CH3-O-CH3 的 HZSM-5 上使用 CuZnAl 混合氧化物的燃烧设计中应用各种燃料实现纳米结构演变

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130063

Reza Khoshbin , Mohammad Haghighi , Shima Oruji

{"title":"Nanostructural evolution by applying various fuels in combustion design of CuZnAl mixed-oxides over HZSM-5 used in one-step production of CH3–O–CH3","authors":"Reza Khoshbin , Mohammad Haghighi , Shima Oruji","doi":"10.1016/j.matchemphys.2024.130063","DOIUrl":"10.1016/j.matchemphys.2024.130063","url":null,"abstract":"<div><div>The influence of different fuels (urea, ethylene glycol and citric acid) in combustion-based design of nano-structured CuO–ZnO–Al<sub>2</sub>O<sub>3</sub>/HZSM-5 catalyst was investigated. The catalytic performance were evaluated in a single step production of dimethyl ether form syngas. The X-ray diffraction, Field emission scanning electron microscopy, Transmission electron microscopy, Energy-dispersive x-ray, Temperature Programmed Reduction-H<sub>2</sub>, N2 Adsorption and Desorption isotherms and Fourier-transform infrared spectroscopy techniques were used to characterize physico-chemical properties of prepared nanocatalysts. The X-ray diffraction results clarified that application of citric acid increased relative crystallinity of Cu and Zn oxides existed in catalyst structure. The Fourier-transform infrared spectroscopy results demonstrated that the zeolite structure was not destroyed after CuO–ZnO–Al<sub>2</sub>O<sub>3</sub>/HZSM-5 introduction. The Field emission scanning electron microscopy and Transmission electron microscopy images illustrated that the nanocatalyst synthesized with citric acid has the highest porosity and less population of particle agglomerations. The highest amount of surface area was obtained when citric acid was used as fuel. According to Temperature Programmed Reduction-H<sub>2</sub> profiles, the reducibility of nanocatalyst synthesized with citric acid is higher than other samples. The activity of the fabricated nanocatalysts for syngas to Dimethyl ether process were tested at temperature and pressure range of 225–300 °C and 10–40 bar, respectively. Using citric acid as fuel led to achieve greater amount carbon monoxide conversion and Dimethyl ether yield. Furthermore, stability test represented that the activity of this nanocatalyst remained quite stable during 1060 min.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130063"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 preparation of three-dimensional copper foam incorporated with Au/CuO nanorods as a durable, reusable and efficient SERS substrate 简便制备加入金/铜氧化物纳米棒的三维泡沫铜，作为耐用、可重复使用和高效的 SERS 基底

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130067

Huy Hoang Do , Cong Doanh Sai , Quang Hoa Nguyen , Bach Pham , Le Thanh Son , Tung Duy Vu

{"title":"Facile preparation of three-dimensional copper foam incorporated with Au/CuO nanorods as a durable, reusable and efficient SERS substrate","authors":"Huy Hoang Do , Cong Doanh Sai , Quang Hoa Nguyen , Bach Pham , Le Thanh Son , Tung Duy Vu","doi":"10.1016/j.matchemphys.2024.130067","DOIUrl":"10.1016/j.matchemphys.2024.130067","url":null,"abstract":"<div><div>An exceptionally durable and recyclable three-dimensional copper foam (CF) modified CuO nanorods with Au nanostructures on its surface is noticeable for the application in surface-enhanced Raman scattering (SERS). The utilization of CF as a 3D frame substrate allowed for the advancement of its beneficial characteristics, such as an increased surface-active area resulting from its high porosity and superior chemical/physical stability. By thermally oxidizing CF at a temperature of 500 °C, CuO nanorods were fabricated directly onto CF to exploit its advantageous properties, such as its high surface-active area and photodegradation effect. Following that, Au nanostructures were deposited onto the surfaces of CuO nanorods via photoreduction. The purpose of incorporating Au nanostructures was to optimize the SERS phenomenon, since Au exhibits high SERS efficiency and excellent surface stability. The Au/CuO@CF SERS substrate demonstrated the capability to measure MB at a concentration of 0.1 nM. Meanwhile, the recyclability of the Au/CuO@CF was evaluated by subjecting it to UV irradiation three times while utilizing MB samples. Subsequently, the Au/CuO@CF substrate's physical durability was evaluated via sandpaper abrasion test. In addition to confirming the long-term usability, the Au/CuO@CF demonstrated its resilience by maintaining good measurement performance even after being subjected to ambient air for up to 25 days.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130067"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Microstructural analysis of inversion degree in sol-gel synthesized spinel MnCo2O4 particles 溶胶凝胶合成尖晶石 MnCo2O4 粒子反转度的微观结构分析

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130069

Erik Padilla-Zarate , Priscila Sepúlveda , Ana C. Murrieta , Miguel Hesiquio-Garduño , Danyel Cavazos-Cavazos , M.B. Hernández , J.A. Aguilar-Martínez , Flavio F. Contreras-Torres

{"title":"Microstructural analysis of inversion degree in sol-gel synthesized spinel MnCo2O4 particles","authors":"Erik Padilla-Zarate , Priscila Sepúlveda , Ana C. Murrieta , Miguel Hesiquio-Garduño , Danyel Cavazos-Cavazos , M.B. Hernández , J.A. Aguilar-Martínez , Flavio F. Contreras-Torres","doi":"10.1016/j.matchemphys.2024.130069","DOIUrl":"10.1016/j.matchemphys.2024.130069","url":null,"abstract":"<div><div>Spinel-type compounds exhibit versatile structural and functional properties, which stems from the unique cation distribution that spans a spectrum from partial to total cell inversion degrees.</div><div>In this study, we investigated the preparation of MnCo₂O₄ particles synthesized via a modified sol-gel method. The synthesized particles were thoroughly characterized using X-ray diffraction, scanning electron microscopy, Raman spectroscopy, and Rietveld refinements to assess their microstructural properties. The impact of different annealing temperatures (1000, 1100, and 1200 °C) and durations (1 and 8 h) on the crystal evolution of the synthesized particles was systematically investigated to assess the structural adaptability of the MnCo₂O₄ spinel under these synthesis conditions. The degree of inversion and oxygen positional parameters within the crystalline systems were quantified using the Bertaut method to obtain the specific arrangement of manganese and cobalt ions for inversion degrees from approximately 0.85 (random) to 1.00 (inversion) with the presence of a secondary phase of Co<sub>3</sub>O<sub>4</sub> (20 wt%). The lattice parameter was determined from Rietveld analysis to be 8.2720 and 8.2927 Å for the normal and inverted spinel, respectively. Finally, the I(220)/I(400) and I(400)/I(422) intensity ratios were identified as reliable indicators of inversion degree, with these intensities ratios significantly influenced by the oxygen positional parameter.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130069"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

One-step synthesis of Zn-doped nickel sulfide/graphene derived from Ni-MOF for supercapacitor application 一步合成由 Ni-MOF 衍生的掺杂锌的硫化镍/石墨烯，用于超级电容器

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-10-19 DOI: 10.1016/j.matchemphys.2024.130068

Morteza Moradi , Shokoufeh Zolfaghari , Mehdi Pooriraj , Mohsen Babamoradi , Shaaker Hajati

{"title":"One-step synthesis of Zn-doped nickel sulfide/graphene derived from Ni-MOF for supercapacitor application","authors":"Morteza Moradi , Shokoufeh Zolfaghari , Mehdi Pooriraj , Mohsen Babamoradi , Shaaker Hajati","doi":"10.1016/j.matchemphys.2024.130068","DOIUrl":"10.1016/j.matchemphys.2024.130068","url":null,"abstract":"<div><div>A metal sulfide derived from a metal-organic framework (MOF) was synthesized to be used as the active material for the supercapacitor's electrode. In this article, nickel-MOF was hydrothermally synthesized through a facile method; then, the synthesized MOF was doped with Zinc and composited with graphene oxide (GO) in different concentrations. Then, the composites that were achieved were sulfurized to study the improvement of the synthesized active materials. The synthesized materials were characterized with XRD, FESEM, EDS, and N<sub>2</sub> adsorption-desorption hysteresis techniques. The fabricated electrodic active materials were studied employing cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. Comparing the electrochemical performance of the synthesized sulfides revealed that the electrode with a higher amount of GO has the best electrochemical performance among other compositions with the specific capacitance of 442.66 F/g, which was obtained at a current density of 1 A/g. In addition, the asymmetric supercapacitor cell consisting of the mentioned electrode as the positive electrode and activated carbon as the negative electrode provided a power density of 774.99 W/kg at the maximum energy density of 2.142 Wh/kg and a higher cycling stability of 96 % retention at about 10,000 cycles.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"329 ","pages":"Article 130068"},"PeriodicalIF":4.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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