Next Nanotechnology最新文献_第8页

Digital fabrication of colors with colloidal crystals and colloidal glasses 用胶体晶体和胶体玻璃数字制作色彩

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100062

Rahul Karyappa , Deepshikha Arora , Tzee Luai Meng , Qiang Zhu , Joel Yang , Hongfei Liu

{"title":"Digital fabrication of colors with colloidal crystals and colloidal glasses","authors":"Rahul Karyappa , Deepshikha Arora , Tzee Luai Meng , Qiang Zhu , Joel Yang , Hongfei Liu","doi":"10.1016/j.nxnano.2024.100062","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100062","url":null,"abstract":"<div>The structural color properties of colloidal arrays can be controlled by colloidal assembly via tuning the size, composition, and ordering of colloidal particles and their formation at the macroscale. Controlled assembly and patterning offer many advantages for the technological development of photovoltaics, optics, and lab-on-a-chip, where the ordering of particles can influence the properties and functions of a system. Many techniques have been well established for patterning ordered colloidal arrays (colloidal crystals), and disordered colloidal arrays (colloidal glasses). However, they are time-consuming and require additional steps such as masking, etching, or stamping. The advent of digital manufacturing, in which additive manufacturing is combined with computer-aided design (CAD), can overcome some of the challenges in fabricating structures from colloidal particles. This article presents a review of recent strategies for digitally fabricating 1D (e.g., single line), 2D (e.g., arrays of dots and patterns with lines), and 3D (e.g., dots and balls) colloidal crystals and glasses, including inkjet printing, direct ink writing, electrohydrodynamic jet printing, two-photon lithography, and digital light processing. The requirements of colloidal ink formulations for different 3D printing methods are discussed. The effects of the wettability of the printed ink on the ordering of colloidal particles in the fabricated structures and the resulting structural colors are discussed. Finally, a summary and perspective on future development are presented.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000238/pdfft?md5=d640fa066e5e14baa7313f868f6055c5&pid=1-s2.0-S2949829524000238-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140646179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization effect induced by strain in hexagonal boron nitride nanoribbons 六方氮化硼纳米带应变诱导的极化效应

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100047

Ningqiang Shi , Ling Li , Junsong Wang , Xiangqian Jiang , Jiandong Hao , Jinchang Meng , Tingwei Yan , Chuncheng Ban

{"title":"Polarization effect induced by strain in hexagonal boron nitride nanoribbons","authors":"Ningqiang Shi , Ling Li , Junsong Wang , Xiangqian Jiang , Jiandong Hao , Jinchang Meng , Tingwei Yan , Chuncheng Ban","doi":"10.1016/j.nxnano.2024.100047","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100047","url":null,"abstract":"<div>As a member of the hexagonal boron nitride (h-BN) system, boron nitride nanoribbons (BNNRs) have a BN polar covalent bonding infrastructure, and there are small-scale effects with strong correlation with piezoelectric effects as well as edge-strengthening quantum effects. However, realizing the polarization effect on BNNRs through experiments remains challenging. Here, we verify the strain-induced polarization effect on BNNRs through computational simulations and experiments. Using the ten-point iterative method, a computational model that can be used for the discrete difference of the polarization charge density and energy density of BNNRs is developed, and the correctness of the model for the polarization effect of Gaussian strain-induced BNNRs is verified by the computational programming in Python language. The polarization effects of strain-induced zigzag-edge BNNRs (ZBNNRs) for sawtooth strain, parabolic strain and oblique sawtooth strain are also investigated separately. In addition, the results of the computational simulations are experimentally verified to be consistent with the theoretical calculations. And the piezoelectric constant of − 276.88 pm∙V−1 for strained ZBNNRs is found to be four times higher than that of unstrained ZBNNRs. This study provides a relevant reference for the study of realizing the high integration of nano-scale h-BN based piezoelectricity for piezoelectricity.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100047"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000081/pdfft?md5=51217f0dcccb0be1b335a6310d846139&pid=1-s2.0-S2949829524000081-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139549179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of high-surface-area mesoporous SnO2 nanomaterials using carbon template 利用碳模板合成高表面积介孔二氧化锡纳米材料

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100057

Monsur Islam , Kunal Mondal , Vinay Kishnani , Ankur Gupta , Ashutosh Sharma

{"title":"Synthesis of high-surface-area mesoporous SnO2 nanomaterials using carbon template","authors":"Monsur Islam , Kunal Mondal , Vinay Kishnani , Ankur Gupta , Ashutosh Sharma","doi":"10.1016/j.nxnano.2024.100057","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100057","url":null,"abstract":"<div>Metal oxide porous nanomaterials are of great interest across scientific fields due to their intriguing properties, allowing their usage from lab-scale research to industrial applications. However, the production of high surface area metal oxide nanomaterials still poses significant challenges. This study introduces a novel method for synthesizing highly porous tin oxide (SnO2) nanostructures using carbon as the template material. The synthesis process includes the formation of a precursor composite containing resorcinol-formaldehyde gel and a tin oxide precursor, which is first carbonized to convert the resorcinol-formaldehyde into a porous three-dimensional carbon framework. This framework acts as a scaffold for the nucleation of SnO2 nanoparticles. Subsequent oxidation selectively removes the carbon template, yielding highly porous SnO2 nanomaterials. Electron microscopy analysis shows that the nanomaterials feature a particle size with average diameter of ∼30 nm, whereas Gas adsorption-desorption characterization indicates pronounced mesoporosity, with a pore size of 3 nm and a specific surface area of 476 m2/g. The enhanced surface area surpasses the previously reported studies on porous SnO2. This is significant considering the easy production process of the nanomaterials, which signifies its potential for large-scale production. Furthermore, this approach offers versatility, as different materials can replace the carbon component, allowing for tailored nanostructure design and enhanced properties. The resulting materials can offer exciting possibilities in the field of materials science and nanotechnology.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100057"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000184/pdfft?md5=8542614656058c2780e3431b468f7ef1&pid=1-s2.0-S2949829524000184-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139992560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanomaterial integration in micro LED technology: Enhancing efficiency and applications 微型 LED 技术中的纳米材料集成：提高效率和应用

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100056

Raghvendra Kumar Mishra , Kartikey Verma , Iva Chianella , Saurav Goel , Hamed Yazdani Nezhad

{"title":"Nanomaterial integration in micro LED technology: Enhancing efficiency and applications","authors":"Raghvendra Kumar Mishra , Kartikey Verma , Iva Chianella , Saurav Goel , Hamed Yazdani Nezhad","doi":"10.1016/j.nxnano.2024.100056","DOIUrl":"10.1016/j.nxnano.2024.100056","url":null,"abstract":"<div>The micro-light emitting diode (µLED) technology is poised to revolutionise display applications through the introduction of nanomaterials and Group III-nitride nanostructures. This review charts state-of-the-art in this important area of micro-LEDs by highlighting their key roles, progress and concerns. The review encompasses details from various types of nanomaterials to the complexity of gallium nitride (GaN) and III nitride nanostructures. The necessity to integrate nanomaterials with III-nitride structures to create effective displays that could disrupt industries was emphasised in this review. Commercialisation challenges and the economic enhancement of micro-LED integration into display applications using monolithic integrated devices have also been discussed. Furthermore, different approaches in micro-LED development are discussed from top-down and bottom-up approaches. The last part of the review focuses on nanomaterials employed in the production of micro-LED displays. It also highlights the combination of III-V LEDs with silicon LCDs and perovskite-based micro-LED displays. There is evidence that efficiency and performance have improved significantly since the inception of the use of nanomaterials in manufacturing these.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100056"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000172/pdfft?md5=4e16f1923b9ee9d7a88855fd898a702f&pid=1-s2.0-S2949829524000172-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140275373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of annealing temperature on microstructure and phase transformations of oxide system Bi2O3/TiO2 formed in aqueous solutions 退火温度对水溶液中形成的氧化物体系 Bi2O3/TiO2 的微观结构和相变的影响

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2023.100038

Gennady Gorokh , Uladzimir Fiadosenka , Xiaozhi Wang , Igor Taratyn

{"title":"Influence of annealing temperature on microstructure and phase transformations of oxide system Bi2O3/TiO2 formed in aqueous solutions","authors":"Gennady Gorokh , Uladzimir Fiadosenka , Xiaozhi Wang , Igor Taratyn","doi":"10.1016/j.nxnano.2023.100038","DOIUrl":"https://doi.org/10.1016/j.nxnano.2023.100038","url":null,"abstract":"<div>Bismuth titanate is widely used in various fields of science and technology due to its unique physical and chemical properties. Nanostructured metal oxide compounds of the Bi–Ti–O system, consisting of columnar TiO2 nanostructures obtained by electrochemical anodization of a two-layer Ti/Al composition, and platelet Bi2O3 nanostructures formed by sequential ion-layer deposition were synthesized. Morphological changes and phase transformations in the microstructure of the Bi2O3/TiO2 oxide system, which occur during its thermal annealing at temperatures of 150, 300, 500, and 700 °C, have been studied. Annealing of the oxide system in the range of 150–300 °C degrees leads to inconsequential morphological and structural changes: the mixture of oxides is densified, in addition to anatase, a rutile phase appears in TiO2. The crystal system of the Bi2O3 phase is hexagonal. After annealing at 500 °C, not only morphological changes occurred in the studied composite, but also significant transformations in the microstructure. In the film volume, oxide phases Ti2O3 and Bi2O3 began to transform into three-component compound Bi4Ti3O12, and this process is completed at 700 degrees with the formation of single-phase Bi4Ti3O12 nanocomposite with an orthorhombic lattice with the crystal space group Fmmm.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100038"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829523000384/pdfft?md5=f45f50cbdf9aeaf05afae3adb5b1f518&pid=1-s2.0-S2949829523000384-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A SANS investigation of silk-stabilized aqueous poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester nanoparticle dispersions 丝稳定水性聚（3-己基噻吩）：苯基-C61-丁酸甲酯纳米粒子分散体的 SANS 研究

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100066

Rajkamal Balu , Tuan Sang Tran , Jitendra P. Mata , Liliana de Campo , Naba K. Dutta , Namita Roy Choudhury

{"title":"A SANS investigation of silk-stabilized aqueous poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester nanoparticle dispersions","authors":"Rajkamal Balu , Tuan Sang Tran , Jitendra P. Mata , Liliana de Campo , Naba K. Dutta , Namita Roy Choudhury","doi":"10.1016/j.nxnano.2024.100066","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100066","url":null,"abstract":"<div>Regenerated silk fibroin (RSF) protein comprising both hydrophilic and hydrophobic chain segments offer great potential for interfacial interaction and stabilization of organic nanoparticles (NPs) in aqueous medium. In this work, aqueous dispersion of poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) NPs of 1:1 weight ratio were prepared using RSF as surfactant for the first time via the mini-emulsion method. The size, morphology, internal structure, interface and hierarchical organization of RSF-stabilized P3HT:PCBM NPs was investigated using UV–visible spectroscopy, contrast-variation small-angle neutron scattering (CV-SANS) and ultra-small-angle neutron scattering (CV-USANS). The P3HT:PCBM NPs were established to be stabilized in the matrix of RSF colloidal microparticles in water. Unlike the commonly used surfactant sodium dodecyl sulfate which produces core–shell (PCBM–P3HT) NPs, the RSF molecules generated P3HT:PCBM NPs with internal structure that resemble phase-separated solvent-cast films. The as-prepared dispersion has good film-forming ability and has been demonstrated for fabrication of composite films comprising graphene oxide.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100066"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000275/pdfft?md5=dc6f51dbdafb3a22c9a5f8b6eaa978f0&pid=1-s2.0-S2949829524000275-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140328618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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, manufacturing and functionality testing of a green electrospun nanocomposite membrane for mechanical and antibacterial characteristics 绿色电纺纳米复合膜的机械和抗菌特性设计、制造和功能测试

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100086

Kelton C. Ireland , Avik Khan , Shawn R. MacLellan , Gobinda C. Saha , Muhammad T. Afzal

{"title":"Design, manufacturing and functionality testing of a green electrospun nanocomposite membrane for mechanical and antibacterial characteristics","authors":"Kelton C. Ireland , Avik Khan , Shawn R. MacLellan , Gobinda C. Saha , Muhammad T. Afzal","doi":"10.1016/j.nxnano.2024.100086","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100086","url":null,"abstract":"<div>Graphene oxide (GO) and cellulose nanocrystal (CNC) integrated nanocomposite fibrous membrane of thermoplastic polyurethane (TPU) was designed and synthesized following a solution-specific electrospinning method. GO was investigated for its potential for mechanical and antibacterial properties’ enhancement in the TPU-focused membrane design and development. Concurrently, CNC was integrated with the combination to investigate its hydrophilicity effect in the three-constituent membrane. The membranes were deposited with average fiber diameters ranging from 142.50 nm to 164.60 nm. Testing and characterization of the membranes were found to indicate the following: 1) neither the presence of GO nor CNC nor combination of CNC and GO significantly affected the tensile properties; 2) dynamic mechanical analysis (DMA) revealed that GO and CNC were able to increase the glass transition temperature of the TPU with the strongest response resulting from the use of both nanomaterials; 3) water contact angle measurements following a Sessile drop methodology indicated that the presence of GO had little effect on the initial contact angle, CNC showed a slightly more hydrophobic initial behavior, and CNC with GO displayed a more hydrophilic initial behavior; 4) antibacterial testing showed that neither presence of GO nor CNC improved the antibacterial behavior of the TPU membranes.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100086"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000470/pdfft?md5=5bdb9f308ffac65408a171c140c6f089&pid=1-s2.0-S2949829524000470-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141582610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biosynthesis and characterization of silver nanoparticles using polysaccharides from Caulerpa racemosa and evaluation of their antioxidant, antibacterial, and anticancer activities 利用松柏多糖生物合成银纳米粒子并确定其特性，评估其抗氧化、抗菌和抗癌活性

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100088

Cholaraj Ragunath , Karthik Madeshwaran , Darthiqueen Paulraj , Selvakumar Murugesan , Ramasubramanian Venkatachalam

{"title":"Biosynthesis and characterization of silver nanoparticles using polysaccharides from Caulerpa racemosa and evaluation of their antioxidant, antibacterial, and anticancer activities","authors":"Cholaraj Ragunath , Karthik Madeshwaran , Darthiqueen Paulraj , Selvakumar Murugesan , Ramasubramanian Venkatachalam","doi":"10.1016/j.nxnano.2024.100088","DOIUrl":"10.1016/j.nxnano.2024.100088","url":null,"abstract":"<div>In recent years, using biological materials to synthesize metallic nanoparticles has emerged as an efficient and cost-effective approach. This work synthesized silver nanoparticles (AgNPs) from Caulerpa racemosa (Cr) - Polysaccharide (Ps). UV–vis spectroscopy examined the synthesised Cr-Ps-AgNPs, revealing a colour shift and a surface plasmon resonance peak at 450 nm. The Fourier transform infrared spectroscopy is used to detect functional groups within the polysaccharide and to investigate nanoparticle interactions. Scanning Electron Microscopy revealed that the biosynthesized Cr-AgNPs varied in size from 32 to 77 nm. X-ray diffraction confirmed that the Cr-Ps-AgNPs were crystalline. Also, dynamic light scattering showed that the Cr-Ps-AgNPs particles, which were biosynthesized nanoparticles, had a size distribution that was polydisperse, with an average diameter of 42.8 nm. In a dose-dependent manner, the biosynthesized Cr-Ps-AgNPs demonstrate high antioxidant activity in the DPPH, reducing power, and total antioxidant scavenging tests. The antibacterial activity of Cr-Ps-AgNPs against Pseudomonas aeruginosa, Klebsiella pneumonia, Staphylococcus aureus, and Streptococcus pyogenes was assessed using an agar well diffusion test, which revealed dose-dependent activity. The cytotoxicity investigation showed a dose-dependent activity against breast cancer cells (MCF-7), with an inhibitory concentration (IC50) of 38 μg/mL. The results of this study show that synthesised Cr-Ps-AgNPs exhibit antioxidant, antibacterial, and anticancer properties.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100088"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000494/pdfft?md5=2e113b00062e09915032330b8e6c12b8&pid=1-s2.0-S2949829524000494-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural evolution, electronic and optical properties of praseodymium doped silicon cluster PrSin0/- (n = 10–20): A theoretical investigation 掺镨硅团簇 PrSin0/-（n = 10-20）的结构演化、电子和光学特性：理论研究

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100094

Xueyan Dong , Caixia Dong , Yaoqiang Huo , Lin Cheng , Zhaofeng Yang , Jucai Yang

{"title":"Structural evolution, electronic and optical properties of praseodymium doped silicon cluster PrSin0/- (n = 10–20): A theoretical investigation","authors":"Xueyan Dong , Caixia Dong , Yaoqiang Huo , Lin Cheng , Zhaofeng Yang , Jucai Yang","doi":"10.1016/j.nxnano.2024.100094","DOIUrl":"10.1016/j.nxnano.2024.100094","url":null,"abstract":"<div>The rare earth dope d nano-cluster can be a building block for the next-generation photo-electrical industry, so the imminent discovery of novel, suitable nano-functional material is urgent. Praseodymium element as a wonderful dopant, bestow a novel photoelectrochemical properties for nanomaterials especially for semiconductor, derived from its unfulfilled 4f electrons configuration and active electronic transitions between 4f to 4f and 4f to 5d. In view of this, the neutral and anionic clusters of PrSin0/- with a medium size of n = 10–20 are comprehensively investigated by the quantum chemistry method of mPW2PLYP associated with the global searching potential energy surface techniques. The geometry evolution in medium size for PrSin can be attributed to three stages of replaced (n = 10–12), linked (n = 13–19), and cage (n = 20) structure. For PrSin-, two evolution phases are obviously observed by linked (n = 10–19) and cage (n = 20) structure. The PES spectra of the anionic most stable cluster and several degeneracy structures are simulated to identify the ground state structure. Each cluster of AEA, charge transfer, and VDE values are all calculated. Combined with binding energy, HOMO-LUMO gap, molecular orbital analysis, and a series of optical properties estimated, including simulated UV–vis, IR, and Raman spectra, excitation behavior shows PrSi20- has not only prominent stability but also has a proper range of lighting absorption, higher electron-hole recombination, possible as a functional material for optoelectronic devices.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100094"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982952400055X/pdfft?md5=832ff51fc591002776ccf3e3fe693c85&pid=1-s2.0-S294982952400055X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green synthesized Fe3O4@CD nanocomposites using Acacia caesia leaves: In vitro biological properties and cytotoxicity assessment 利用金合欢叶绿色合成Fe3O4@CD纳米复合材料：体外生物特性和细胞毒性评估

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100093

M. Padmaja , P. Shyamala , V. Durga Praveena , G. Tejaswini

{"title":"Green synthesized Fe3O4@CD nanocomposites using Acacia caesia leaves: In vitro biological properties and cytotoxicity assessment","authors":"M. Padmaja , P. Shyamala , V. Durga Praveena , G. Tejaswini","doi":"10.1016/j.nxnano.2024.100093","DOIUrl":"10.1016/j.nxnano.2024.100093","url":null,"abstract":"<div>The aim of the present study is to prepare carbon dots (CDs) from Acacia caesia leaves and use them to synthesize Magnetite@CD (Fe3O4@CD) nanocomposites (NCs). The absorbance spectrum, photoluminescence, and surface functional groups were revealed in the optical and morphological properties analysis, which confirmed the successful formation of Fe3O4@CD NCs. Electron microscopy showed that the NCs had an almost spherical shape, with an average particle diameter of 11.02 nm. A vibrating sample magnetometer (VSM) also confirmed the superparamagnetic behavior of Fe3O4@CD NCs behaved in a superparamagnetic way. This study also observed effective in vitro antioxidant, anti-inflammatory, and cytotoxicity properties, all with low inhibitory concentration 50 (IC50) values. However, neither Candida albicans nor Aspergillus niger showed any potential antifungal activity by both CDs and Fe3O4@CD NCs. The synthesized Fe3O4@CD NCs demonstrate significant potential for biomedical applications due to their superparamagnetic properties and low IC50 values, offering new insights into the design of multifunctional nanocomposites. Tuning the physiochemical properties of nanomaterials can have broad-field scientific applications.</div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100093"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000548/pdfft?md5=17d1ca34b923d97e5a341e1f98b16beb&pid=1-s2.0-S2949829524000548-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0