Materials Research Innovations最新文献_第5页

Graphene quantum dots in high performance nanocomposites—design to phantastic progressions 高性能纳米复合材料中的石墨烯量子点——设计成神奇的进展

Materials Research Innovations Pub Date : 2023-10-17 DOI: 10.1080/14328917.2023.2267362

Ayesha Kausar, Ishaq Ahmad

{"title":"Graphene quantum dots in high performance nanocomposites—design to phantastic progressions","authors":"Ayesha Kausar, Ishaq Ahmad","doi":"10.1080/14328917.2023.2267362","DOIUrl":"https://doi.org/10.1080/14328917.2023.2267362","url":null,"abstract":"ABSTRACTThis comprehensive and novel article covers an important category of nanocomposites, i.e. polymer and graphene quantum dots derived nanocomposites. Graphene quantum dots have been found as remarkable zero-dimensional derivative of graphene having size of up to 20 nm. Similar to graphene, graphene quantum dots have been applied as beneficial nano-reinforcement for the polymers. In this context, various conductive polymers (polypyrrole, polyaniline, polythiophene, etc.) and thermoplastic polymers (poly(vinyl alcohol), poly(vinyl fluoride), etc.) have been used as matrices. Inclusion of graphene quantum dots in matrices have revealed superior structure, morphological, electronic, optical, photoluminescence, and several other advantageous physical characteristics. Important application areas of polymer/graphene quantum dots nanomaterials have been observed for solar cells, sensors, supercapacitors, batteries, memory devices, and bioimaging. However, further research efforts have been desirable regarding the graphene quantum dots modification and exploration of new graphene quantum dots derived nanocomposite designs and applied sectors as well as overcoming the related challenges for future progressions in this important category of nanocomposites.KEYWORDS: Graphene quantum dotsconductive polymernanocompositessensorsolar cell Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135994263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrothermal synthesis of antibacterial silver@cuprous oxide core-shell/hydroxyapatite (Ag@Cu ₂ O/HAp) hetero-nanohybrids 水热合成抗菌silver@cuprous氧化核壳/羟基磷灰石(Ag@Cu 2o /HAp)杂纳米杂化物

Materials Research Innovations Pub Date : 2023-10-04 DOI: 10.1080/14328917.2023.2264597

A. Jeshurun, Md. Irfan, B.M. Reddy

{"title":"Hydrothermal synthesis of antibacterial silver@cuprous oxide core-shell/hydroxyapatite (Ag@Cu 2 O/HAp) hetero-nanohybrids","authors":"A. Jeshurun, Md. Irfan, B.M. Reddy","doi":"10.1080/14328917.2023.2264597","DOIUrl":"https://doi.org/10.1080/14328917.2023.2264597","url":null,"abstract":"ABSTRACTIn the present work, we examined the antibacterial activity of novel silver@cuprous oxide core-shell/hydroxyapatite (Ag@Cu2O/HAp) hetero-nanohybrids against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria. The hydrothermal technique was used to easily synthesise Ag@Cu2O/HAp core-shell nanohybrid structures. Immobilisation of Ag@Cu2O core shells on HAp nanoparticles was done by controlling the relative concentrations of Ag, Cu2O, and HAp. The Ag@Cu2O/HAp nanohybrids were characterised using XRD, FTIR, Raman, UV-vis, SEM, EDX, TEM, and SAED methods. By observing the growth of S. aureus and E. coli populations in the presence and absence of Ag, Ag@Cu2O, HAp, and Ag@Cu2O/HAp nanoparticles, their antibacterial impact was compared. MIC Alamar Blue assay was performed to study the cytotoxicity of Ag@Cu2O/HAp nanomaterials. In addition, reactive oxygen species (ROS) studies were conducted to understand the type of active species produced under light and dark conditions. The possible photochemical and antibacterial mechanisms of the Ag@Cu2O/HAp nanohybrids against S. aureus and E. coli bacteria were proposed. In addition, the promising antibacterial nature of Ag@Cu2O/HAp materials suggests that they are good candidates for industrial and biomedical applications.KEYWORDS: Ag@Cu2O core shellshydroxyapatitenanohybridshydrothermalantibacterial AcknowledgmentsThe authors thank Department of Materials Science, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu 610005, India for providing the necessary facilities to complete the current work.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135592114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced structural properties of electrochemically synthesised NiFeS using 500 keV carbon C ⁺⁺ ions irradiation 500 keV碳++离子辐照增强电化学合成NiFeS的结构性能

Materials Research Innovations Pub Date : 2023-09-26 DOI: 10.1080/14328917.2023.2262315

Ijabor Okeoghene Blessing, Haneef Shah, Shahbaz Afzal, Imosobomeh L. Ikhioya

{"title":"Enhanced structural properties of electrochemically synthesised NiFeS using 500 keV carbon C ++ ions irradiation","authors":"Ijabor Okeoghene Blessing, Haneef Shah, Shahbaz Afzal, Imosobomeh L. Ikhioya","doi":"10.1080/14328917.2023.2262315","DOIUrl":"https://doi.org/10.1080/14328917.2023.2262315","url":null,"abstract":"ABSTRACTAn electrochemical approach was used to synthesise nickel iron sulphide (NiFeS) materials in this work. The prepared NiFeS underwent a thorough investigation, which included analyses of its optical, electrical, structural, morphological, elemental, and functional group properties. Cubic crystal formations with prominent peaks were visible from the structural pattern. Nanoflakes and pebbles were visible, and their elements were determined through elemental dispersive X-ray diffractometer (EDX) spectrum. The film’s crystallinity increased after incorporating carbon ions and its optical properties improved, with energy band gap values ranging from 1.50 eV to 1.15 eV as the peaks became more distinct. The materials produced could be utilised in the production of solar cells and optoelectronic devices. The electrical conductivity diminishes with increasing thickness. Carbon ion radiation increases carrier concentration, which increases electrical conductivity.Research highlightsNiFeS was irradiated using 500 keV carbon C++ ions beam irradiationNiFeS without irradiation has a bandgap of 1.50 eV, while the irradiated material had bandgaps between 1.35-1.15 eV.The film’s crystallinity was enhanced by incorporating carbon ionsNanogels and nanoflakes were seen in the micrographs of the unirradiated materials.KEYWORDS: NickelNiFeSions beamcarbonenergy bandgapirradiation Disclosure statementThe authors affirm no financial or interpersonal conflicts affected the research in this study.Data availability statementData can be given upon request.Authors’ credit statementIjabor Okeoghene Blessing, Haneef Shah, Imosobomeh L. Ikhioya: Conceptualisation, Methodology, Original Draft Writing, Imosobomeh L. Ikhioya and Shahbaz Afzal: software, and editing. Imosobomeh L. Ikhioya: Investigation and visualisation.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134958094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bi ₂ O ₃ nanoparticles: phytogenic synthesis, effect of calcination on physico-chemical characteristics and photocatalytic activity 二氧化钛纳米颗粒:植物合成、煅烧对其物理化学特性和光催化活性的影响

Materials Research Innovations Pub Date : 2023-09-18 DOI: 10.1080/14328917.2023.2258469

Parmeshwar Lal Meena, Ajay Kumar Surela, Lata Kumari Chhachhia

{"title":"Bi 2 O 3 nanoparticles: phytogenic synthesis, effect of calcination on physico-chemical characteristics and photocatalytic activity","authors":"Parmeshwar Lal Meena, Ajay Kumar Surela, Lata Kumari Chhachhia","doi":"10.1080/14328917.2023.2258469","DOIUrl":"https://doi.org/10.1080/14328917.2023.2258469","url":null,"abstract":"ABSTRACTThe present work reported the bioinspired synthesis of Bi2O3 nanoparticles (NPs) using Ziziphus mauritiana leaves aqueous extract at four annealing temperatures (300, 400, 500, and 600C°) and examined annealing temperatures effect of on various physicochemical characteristics and photocatalytic activities of NPs. The XRD and Raman results reveal the existence of α and β polymorphs of Bi2O3 in all samples but with increase of calcination temperature the extent of α-phase, particle size, and crystallinity were increased while band gap value decreased. The BET results confirmed the mesoporous structure of all samples. Further, decolorization experiments conducted with crystal violet (CV) dye showed an observable effect of annealing temperature on the adsorption and photocatalytic efficacy of the prepared samples, and the utmost (99.88 %) removal of CV dye was computed with the Bi2O3 nanoparticles calcined at 300oC (B-300). The main active species involved in the photo-mineralization of dye was h+ followed by •OH..KEYWORDS: Bi2O3ziziphus mauritianacalcination temperaturephotocatalytic efficiencycrystal violet dye AcknowledgmentsThe authors are grateful to the University of Rajasthan, Jaipur, for providing infrastructural support. The technical assistance for this study was provided by MNIT, Jaipur Campus, and CAF, Manipal University, Jaipur.Disclosure statementThe authors declare that they do not have any conflict of interests among them.Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/14328917.2023.2258469","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135149185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of polyethylene glycol and Gongronema latifolium on the structural, optical and magnetic properties of magnesium ferrite nanoparticles for hyperthermia applications 聚乙二醇和红叶对铁氧体镁纳米颗粒结构、光学和磁性能的影响

Materials Research Innovations Pub Date : 2023-09-11 DOI: 10.1080/14328917.2023.2257474

Obianke M. Orumgbe, Samson O. Aisida, Ijeh Rufus, Henrietta O. Uzoeto, Azubike Ekwealor, Ishaq Ahmad, Fabian I. Ezema

{"title":"Influence of polyethylene glycol and Gongronema latifolium on the structural, optical and magnetic properties of magnesium ferrite nanoparticles for hyperthermia applications","authors":"Obianke M. Orumgbe, Samson O. Aisida, Ijeh Rufus, Henrietta O. Uzoeto, Azubike Ekwealor, Ishaq Ahmad, Fabian I. Ezema","doi":"10.1080/14328917.2023.2257474","DOIUrl":"https://doi.org/10.1080/14328917.2023.2257474","url":null,"abstract":"Ferrite materials have found applications in various fields, particularly in biomedical fields. This work involves the preparation of Magnesium ferrite nanoparticles (MgFNPs) by biosynthesis protocol using polyethylene glycol (PEG-4000) and gongronema latifolium (GL) extracts as capping and reducing agents, to heighten the properties of MgFNPs for effective hyperthermia applications. Various characterization techniques were used to determine the properties of the formulated samples. Spherical morphology with low agglomeration was observed by the SEM analysis. The XRD showed a crystallite size between 10 and 49 nm. The VSM confirmed the superparamagnetic nature of the samples. The heating ability was observed to decrease to the therapeutic rage with GL and PEG. However, further investigations for the hyperthermia application were performed on the formulated samples by estimating their Specific loss power (SLP). The samples showed high SLP between 130.6 and 290.8 W/g. The materials capped with PEG has better properties for hyperthermia applications.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135981516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of particle size of the Ni/SiO2 hollow spheres on the activity for reduction of 4-nitrophenol Ni/SiO2空心球粒径对4-硝基苯酚还原活性的影响

Materials Research Innovations Pub Date : 2023-08-31 DOI: 10.1080/14328917.2023.2252674

N. Toyama, Haruto Sato, Norifumi Terui, S. Furukawa

引用次数: 0

Green synthesis of copper oxide nanoparticles using neem leaf extract (Azadirachta indica) for energy storage applications 利用印楝叶提取物(印楝叶)绿色合成用于储能应用的氧化铜纳米颗粒

Materials Research Innovations Pub Date : 2023-08-29 DOI: 10.1080/14328917.2023.2252677

I. L. Ikhioya, A. Nkele, F. U. Ochai-Ejeh

引用次数: 2

Temporal-dependent photoconductivity of Cd@ZnS microspheres Cd@ZnS微球的时间依赖光电导率

Materials Research Innovations Pub Date : 2023-08-28 DOI: 10.1080/14328917.2023.2250625

A. K. Shahi, Rathy Shankar, B. Pandey, Raj Ram Gopal

引用次数: 0

Carbon dioxide sensing using a PEI-Cr2O3-rGO nanocomposite sensor with patterned copper clad as a substrate 以图案覆铜为衬底的PEI-Cr2O3-rGO纳米复合传感器的二氧化碳传感

Materials Research Innovations Pub Date : 2023-08-28 DOI: 10.1080/14328917.2023.2250634

N. J R, S. D, B. Praveen, L. K S, P. P.

引用次数: 1

Synthesis and characterization of activated carbon monolith from African locust bean pods and polystyrene resin 以刺槐豆荚和聚苯乙烯树脂为原料的活性炭单体的合成与表征

Materials Research Innovations Pub Date : 2023-08-16 DOI: 10.1080/14328917.2023.2247725

Kingsley O. Iwuozor, Kayode P. Odimayomi, Ebuka Chizitere Emenike, Mustapha Ndagi, Adewale George Adeniyi

{"title":"Synthesis and characterization of activated carbon monolith from African locust bean pods and polystyrene resin","authors":"Kingsley O. Iwuozor, Kayode P. Odimayomi, Ebuka Chizitere Emenike, Mustapha Ndagi, Adewale George Adeniyi","doi":"10.1080/14328917.2023.2247725","DOIUrl":"https://doi.org/10.1080/14328917.2023.2247725","url":null,"abstract":"ABSTRACTActivated carbon monoliths (ACMs) are single-piece, three-dimensional (3D) hierarchical porous structures with good permeability, high stability, and swift mass transfer features. Production of activated carbon monoliths from biomass has been identified as promising and sustainable for process development. In this study, ACM was synthesised from African locust bean pods and polystyrene resin. The pods were chemically activated using potassium hydroxide and then carbonised in a locally fabricated auto-thermal biomass-powered reactor for 100 minutes. The activated carbon was then hand-mixed with an organic binder, expanded polystyrene resin, and the product was thermally cured to form the ACM. The ACM was then characterised to determine its properties. Elemental determination revealed the ACM was mostly composed of carbon (63%), potassium (18%), oxygen (4%), and a host of other metals. SEM micrographs showed that the ACM’s surface is composed of irregular or heterogeneous-sized carbon materials firmly held by the resin with well-developed visible micropores. Some of the functional groups inherent in the ACM include hydroxyl, alkene, carbonyl, and alkyne. The ACM has a BET surface area of 237 m2/g, a pore diameter of 2.86 nm, and a Young modulus of 1.064 MPa. The synthesised ACM can be utilised as an adsorbent for pollution control, as a catalyst, and for electrochemical applications.KEYWORDS: Carbonizationchemical activationmaterial recyclingParkia biglobosawaste management Disclosure statementNo potential conflict of interest was reported by the author(s).Compliance with ethical standardsThis article does not contain any studies involving human or animal subjects.Additional informationFundingThere was no external funding for the study.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136391551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0