Next Nanotechnology最新文献_第9页

A DFT study to unravel the fluorescence mechanisms of APTES-modified carbon dots 揭示 APTES 改性碳点荧光机制的 DFT 研究

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2023.100037

Varsha Lisa John , Fasila P.M. , Vinod T.P.

{"title":"A DFT study to unravel the fluorescence mechanisms of APTES-modified carbon dots","authors":"Varsha Lisa John , Fasila P.M. , Vinod T.P.","doi":"10.1016/j.nxnano.2023.100037","DOIUrl":"https://doi.org/10.1016/j.nxnano.2023.100037","url":null,"abstract":"<div><p>Surface passivation is a well-established method for modifying carbon dots (CDs), intended to improve their properties. We present a theoretical study employing density functional theory (DFT) and time-dependent-DFT (TD-DFT) to explain the photoluminescence (PL) mechanism of amine-modified carbon dots (CD-NH<sub>2</sub>) [CDs modified with (3-Aminopropyl) triethoxy silane (APTES)] considering their local geometry at the terminal ends; the zig-zag (CD<sub>ZZ</sub>-NH<sub>2</sub>) and armchair (CD<sub>AC</sub>-NH<sub>2</sub>) structural orientations. The experimental evidence from our previous report suggests that the amine groups were tethered on the surface of CDs through a Si-O bond realized by the silane coupling reaction between the ethoxy group of APTES and the hydroxyl group of the CDs. The effect of pH in tweaking the PL of these systems is scrutinized in the present study. The influence of pH and structure on the bandgap of CD-NH<sub>2</sub> is demonstrated by analyzing the difference in HOMO-LUMO energies, the density of states (DoS) spectra, and electrostatic potentials (ESP).</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100037"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829523000372/pdfft?md5=2ac449b95739f6b9e75fcb3a4ecc9e63&pid=1-s2.0-S2949829523000372-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139549178","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

Silica nanobiocatalyst: Advancements toward sustainable and innovative applications 二氧化硅纳米生物催化剂：向可持续和创新应用迈进

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100068

Priyanshu Jain , Amritpreet Kaur Minhas , Pawan Kaur , Palash Kumar Manna , Munish Puri , Colin J. Barrow , Shovon Mandal

{"title":"Silica nanobiocatalyst: Advancements toward sustainable and innovative applications","authors":"Priyanshu Jain , Amritpreet Kaur Minhas , Pawan Kaur , Palash Kumar Manna , Munish Puri , Colin J. Barrow , Shovon Mandal","doi":"10.1016/j.nxnano.2024.100068","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100068","url":null,"abstract":"<div><p>Nanobiocatalyst is a useful technological development that brings together modern nanotechnology and biotechnology and offers benefits for enhancing the activity, stability, and performance of enzymes in bioprocessing applications. Nanosupports used in nanocatalysts have a number of advantages over conventional materials, including a robust framework, tunable morphology, increased surface area, excellent pore geometry, inherent properties, and distinctive optical properties for the supporting matrix. Nanobiocatalysts based on silica have been used in drug delivery, optical imaging, pollution control and other catalytic processes. In this review we trace the development of silica-based nano-bio catalysts as a supporting matrix, discussing their structure-property relationships and discuss molecular-level interactions between enzymes and surfaces. The influence of parameters such as pore size, morphology, and surface modifications on immobilisation efficiency and resulting activity is also examined. Additionally, a summary and significant advancements of silica -based nano biocatalysts with potential future applications in the production of biofuel and bioremediation is provided. Overall, the review identifies nano-silica biocatalysts as a promising support and suggests future directions and challenges.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100068"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000299/pdfft?md5=83b9b24593642bdfcc92666cda04f4bb&pid=1-s2.0-S2949829524000299-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140539976","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 and characterization of electrospun reduced graphene oxide/nickel oxide/poly(caprolactone) nanofibers for enhanced corrosion resistance and energy storage performance 用于增强耐腐蚀性和储能性能的电纺还原氧化石墨烯/氧化镍/聚（己内酰胺）纳米纤维的合成与表征

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100049

Sagolsem Nonganbi Chanu, Bibhu Prasad Swain

{"title":"Synthesis and characterization of electrospun reduced graphene oxide/nickel oxide/poly(caprolactone) nanofibers for enhanced corrosion resistance and energy storage performance","authors":"Sagolsem Nonganbi Chanu, Bibhu Prasad Swain","doi":"10.1016/j.nxnano.2024.100049","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100049","url":null,"abstract":"<div><p>In this work, electrospun reduced graphene oxide (rGO)/nickel oxide (NiO)/poly(caprolactone) (PCL) nanofibers were prepared with different concentrations of rGO was synthesized using a chemical reduction route. X-ray diffraction peaks at 21.3° and 24.5° reveal (110) and (200) planes of PCL polymer with orthorhombic unit cell parameters. Broad peaks at 26.9° and 37.3° are the plane (002) and (111) respectively for rGO and NiO, respectively in the rGO/NiO/PCL nanofiber. The defect parameter in carbon, ID/IG, for pure rGO and rGO/NiO/PCL varied from 0.87 to 0.33, indicating an increase in the sp<sup>2</sup> domain as the rGO content increased from 5 % and 15 % of rGO/NiO/PCL nanofiber. The corrosion resistance of rGO/NiO/PCL nanofiber Ecorr and Icorr increases with increasing rGO content. In corrosion, analysis reveals the minimum values of Ecorr and Icorr are 0.04 V and 2.6 μA, respectively. The specific capacitance estimated from cyclic voltammetry, CV and Galvanic charging and discharging, GCD analysis is 381.9 Fg<sup>−1</sup> at a scan rate of 5mVs<sup>−1</sup> and 524 Fg<sup>−1</sup> respectively. The maximum energy density, E and power density, P are 72.7 W h kg<sup>−1</sup> of 499.9 k W kg<sup>−1</sup> for 15 wt% rGO/NiO/PCL nanofiber. Moreover, rGO/NiO/PCL nanocomposite exhibited good cycle stability of 65.5 % after 1000 charge–discharge cycles. NiO/rGO/PCL nanocomposite are one of the best candidates for supercapacitor application</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100049"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982952400010X/pdfft?md5=a35adbc117f43eea40e4773d907550ea&pid=1-s2.0-S294982952400010X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342133","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

Inherent and induced defects in mixed-phase CuO nanoparticles 混相氧化铜纳米粒子中的固有缺陷和诱导缺陷

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2023.100030

Nannuri Usharani , Ramagiri Praveen Kumar , Arnab Sankar Bhattacharyya , Amireddy Raju

{"title":"Inherent and induced defects in mixed-phase CuO nanoparticles","authors":"Nannuri Usharani , Ramagiri Praveen Kumar , Arnab Sankar Bhattacharyya , Amireddy Raju","doi":"10.1016/j.nxnano.2023.100030","DOIUrl":"https://doi.org/10.1016/j.nxnano.2023.100030","url":null,"abstract":"<div><p>Copper (Cupric) oxide is a readily synthesized, non-toxic metal oxide with a wide range of uses, including the treatment of water, the manufacture of electronic devices, solar cells, cathodes for lithium-ion primary batteries, gas sensors, electrochromic devices, supercapacitors, and field effect transistors. The effects of Zn doping in CuO in three different concentrations (weights %) were investigated. The band gap and carrier concentration were altered due to the formation of defect energy states, lattice stresses, and the formation of ZnO, and Cu2O in addition to CuO. Temperature increases from room temperature resulted in the production of metal oxides with preferred crystal growth in specific orientations. An increase in temperature, from 300 °C to 500 °C, generated residual strain release and atomic diffusions, resulting in grain growth and a reduction in the band gap. The changes in UV and PL spectra predicted the growth kinetics involved</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100030"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982952300030X/pdfft?md5=f14ccbe32cc18c8a5880b4a78f141c8d&pid=1-s2.0-S294982952300030X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100808","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

In-plane ferroelectric-reconfigured interface towards dual-modal intelligent vision 面向双模式智能视觉的平面内铁电重构界面

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100052

Yichen Cai , Yizhou Jiang , Xiaofei Yue , Chenxu Sheng , Yajie Qin , Shisheng Xiong , Yiqiang Zhan , Zhi-Jun Qiu , Ran Liu , Wei Chen , Zheng Liu , Laigui Hu , Chunxiao Cong

{"title":"In-plane ferroelectric-reconfigured interface towards dual-modal intelligent vision","authors":"Yichen Cai , Yizhou Jiang , Xiaofei Yue , Chenxu Sheng , Yajie Qin , Shisheng Xiong , Yiqiang Zhan , Zhi-Jun Qiu , Ran Liu , Wei Chen , Zheng Liu , Laigui Hu , Chunxiao Cong","doi":"10.1016/j.nxnano.2024.100052","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100052","url":null,"abstract":"<div><p>With the rapid progress of intelligent vision of the Internet of Things, the gap between the resultant high-level demands and conventional silicon-based hardware architectures is continuously widening. Biomimetic artificial neural networks (ANNs) have recently been proposed to solve this problem. However, they still face the predicaments in uniformity, heterogeneous integration, and hardware implementation, etc. Here we demonstrate an intelligent vision ANN with two-dimensional material (2DM)/molecular ferroelectric (MF) bilayer electronic/optoelectronic memristors. In contrast to conventional ferroelectric transistors, in-plane ferroelectric polarization was also found to enable a simpler two-terminal structure with a lateral p/n-type doping in the adjacent 2DM layer. After a demonstration of fabricated array and board-level driving circuits, an image recognition and classification task is proposed, reaching an accuracy of 85.2%, which implies great potential towards multi-modal artificial intelligent vision systems.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100052"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000135/pdfft?md5=310c388c456c0aacd378d9f9a89030ee&pid=1-s2.0-S2949829524000135-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139733073","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

Study of the synthesis techniques and photoluminescence properties of Eu3+- Tb3+ co-doped phosphors: A review Eu3+- Tb3+ 共掺荧光粉的合成技术和光致发光特性研究：综述

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2023.100033

Deepika Dhaterwal, Mahesh Matoria, Sonika Singh

{"title":"Study of the synthesis techniques and photoluminescence properties of Eu3+- Tb3+ co-doped phosphors: A review","authors":"Deepika Dhaterwal, Mahesh Matoria, Sonika Singh","doi":"10.1016/j.nxnano.2023.100033","DOIUrl":"https://doi.org/10.1016/j.nxnano.2023.100033","url":null,"abstract":"<div><p>Europium (Eu<sup>3+</sup>) and Terbium (Tb<sup>3+</sup>) co-doped phosphors have garnered significant attention in recent years due to their photoluminescence properties and potential applications in various fields. Lanthanide co-doped phosphors are outstanding luminous substances that are implemented to solve the limitations of traditional lighting sources based on sulphide. Over the last decade, increased research emphasis on these phosphors has resulted in a dramatic improvement in their photoluminescence performances, as well as a wide range of luminescence hues that may be used in a number of applications. This review article discusses the evolution of lanthanide (Eu<sup>3+</sup>-Tb<sup>3+</sup>) co-doped phosphors, with an emphasis on the different production techniques, sustained illumination processes, and prospective implications for solid-state lighting innovation. To produce highly crystalline phosphors at low temperatures, the solution combustion approach has proven to be more effective than other techniques including solid state, sol-gel, and hydrothermal procedures, etc. The role of lanthanide ions in photoluminescence tunability has received special attention. In addition, a detailed explanation of the photoluminescent (PL) features of these co-doped luminescent compounds has been described. Along with their uses, their excitation wavelength, emission wavelength, and Commission Internationale de l′éclairage (CIE) coordinates are also mentioned for comparison studies. These co-doped luminescent materials have broad use in several displays and solid-state lighting device applications because of the numerous energy transitions of rare earth ions inside the host lattice. The perusal of this review will be relevant for researchers exploring phosphors.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100033"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829523000335/pdfft?md5=b8be27fc7ff31223b9567e4ed09537d6&pid=1-s2.0-S2949829523000335-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140345166","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

Dopamine capped silver/copper bimetallic elongated nanoparticles and their potential application in wound healing 多巴胺封端银/铜双金属细长纳米粒子及其在伤口愈合中的潜在应用

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100077

Ndivhuwo P. Shumbula , Zakhele B. Ndala , Siyabonga S. Nkabinde , Pumza Mente , Siyasanga Mpelane , Morgan P. Shumbula , Phumlane S. Mdluli , Zikhona Njengele-Tetyana , Phumlani Tetyana , Nosipho Moloto , Mbuso Mlambo

{"title":"Dopamine capped silver/copper bimetallic elongated nanoparticles and their potential application in wound healing","authors":"Ndivhuwo P. Shumbula , Zakhele B. Ndala , Siyabonga S. Nkabinde , Pumza Mente , Siyasanga Mpelane , Morgan P. Shumbula , Phumlane S. Mdluli , Zikhona Njengele-Tetyana , Phumlani Tetyana , Nosipho Moloto , Mbuso Mlambo","doi":"10.1016/j.nxnano.2024.100077","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100077","url":null,"abstract":"<div><p>This research introduces a simple method for synthesizing elongated bimetallic nanoparticles comprised of copper (Cu) and silver (Ag) using a co-reduction process involving Cu and Ag ions with hydrazine, alongside dopamine acting as a capping agent. Various characterization techniques were employed to analyze the prepared nanoparticles. The presence of copper and silver was confirmed through UV–vis analysis, while transmission electron microscopy confirmed their elongated morphology. Powder X-ray diffraction analysis indicated alloy formation rather than a mere mixture of the two metals, with both Cu and Ag exhibiting pure metallic properties and face-centered cubic crystal structures. The antimicrobial activity of the synthesized nanostructures against both gram-positive and gram-negative bacteria was evaluated, demonstrating significant antibacterial properties. Furthermore, the cytotoxicity of the nanoparticles was assessed using baby hamster fibroblasts (BHK-21) cells, revealing promising biocompatibility and low cytotoxicity.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100077"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294982952400038X/pdfft?md5=823a63db65647ff02875c7f6841b4d70&pid=1-s2.0-S294982952400038X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250995","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

InGaN-based blue resonant cavity micro-LEDs with staggered multiple quantum wells enabling full-color and low-crosstalk micro-LED displays 具有交错多量子阱的 InGaN 基蓝色谐振腔微型 LED 可实现全彩和低串扰微型 LED 显示屏

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100048

Wei-Ta Huang , Tzu-Yi Lee , Yi-Hong Bai , Hsiang-Chen Wang , Yu-Ying Hung , Kuo-Bin Hong , Fang-Chung Chen , Chia-Feng Lin , Shu-Wei Chang , Jung Han , Jr-Hau He , Yu-Heng Hong , Hao-Chung Kuo

{"title":"InGaN-based blue resonant cavity micro-LEDs with staggered multiple quantum wells enabling full-color and low-crosstalk micro-LED displays","authors":"Wei-Ta Huang , Tzu-Yi Lee , Yi-Hong Bai , Hsiang-Chen Wang , Yu-Ying Hung , Kuo-Bin Hong , Fang-Chung Chen , Chia-Feng Lin , Shu-Wei Chang , Jung Han , Jr-Hau He , Yu-Heng Hong , Hao-Chung Kuo","doi":"10.1016/j.nxnano.2024.100048","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100048","url":null,"abstract":"<div><p>Herein, we proposed a unique structural design for indium gallium nitride (InGaN) based blue resonant cavity micro-light-emitting diodes (RC-μ-LEDs), focusing on the design, fabrication, and the relevant performance analyses. The proposed RC-μ-LEDs possess a three-layer staggered InGaN/GaN multiple quantum wells (MQWs) within the nanoporous Distributed Bragg Reflectors (NP-DBRs) and the conventional DBRs, introducing light confinement within such a resonant cavity. A passivation layer using atomic layer deposition (ALD) is adopted to reduce the leakage current from sidewall defects as well. Consequently, for the resulting RC-μ-LEDs, the divergence angle (DA) can be achieved down to 39.04°. While the input current increases from 1.77 A/cm² to 54 A/cm², the peak wavelength will shift from 456.16 nm to 449.18 nm, a blue shift of only 6.98 nm. Finally, we also discuss the temperature-dependent characteristics and the corresponding behaviors of our RC-μ-LEDs. Our demonstrated RC-μ-LEDs exhibit great wavelength stability with a diminished divergence angle, thus enabling full-color and low-crosstalk micro-LED displays for on-demand high-resolution applications.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"5 ","pages":"Article 100048"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000093/pdfft?md5=d28a4a59f08cc7b2a4eb430937224746&pid=1-s2.0-S2949829524000093-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139709389","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

Unveiling the synergistic effect of zinc oxide and carbon black nanoparticles on the dielectric properties of vulcanized natural rubber 揭示氧化锌和炭黑纳米粒子对硫化天然橡胶介电性能的协同效应

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100092

A. Anand , Bote Vaishali Raosaheb , M.V. Hemantha Reddy , M.P. Sham Aan , K. Ekwipoo , R.S.Praveen Kumar , A.V. Vijayasankar , C.J. Binish , Jobish Johns

{"title":"Unveiling the synergistic effect of zinc oxide and carbon black nanoparticles on the dielectric properties of vulcanized natural rubber","authors":"A. Anand , Bote Vaishali Raosaheb , M.V. Hemantha Reddy , M.P. Sham Aan , K. Ekwipoo , R.S.Praveen Kumar , A.V. Vijayasankar , C.J. Binish , Jobish Johns","doi":"10.1016/j.nxnano.2024.100092","DOIUrl":"10.1016/j.nxnano.2024.100092","url":null,"abstract":"<div><p>Flexible nanocomposite materials were prepared by introducing Zinc Oxide (ZnO) and Carbon Black (CB) as nano-fillers separately into vulcanized natural rubber (NR). The impact of curing agents and filler integration on the structure and electrical characteristics of NR was thoroughly examined. Electrical properties such as dielectric constant, dielectric loss, and ac conductivity were assessed. Pure NR exhibited higher dielectric properties and ac conductivity compared to NR cured with pentane-1,5-deylidenediamine (PDD), which gradually decreased up to a certain threshold due to the immobilization of non-rubber constituents. Dielectric Constant of pure NR decreases from 148.81 to 6.87 upon the addition of 2 ml crosslinking agent into NR. Furthermore, NR composites filled with CB demonstrated lower dielectric properties compared to those filled with ZnO, likely attributed to the polar nature of ZnO. Dielectric Constant of cured NR was increased and exhibited 20.7 for the NR composite with 0.06 % ZnO. The surface roughness of the resulting nanocomposites was analyzed using optical profilometry, and its correlation with dielectric and ac conductivity was investigated.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100092"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000536/pdfft?md5=75d17dd69a574f246ec262feb73a3a68&pid=1-s2.0-S2949829524000536-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951223","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

Graphitic carbon nitride as an efficient carrier for anti-cancer drug systems: A review 氮化石墨作为抗癌药物系统的高效载体：综述

Next Nanotechnology Pub Date : 2024-01-01 DOI: 10.1016/j.nxnano.2024.100074

Aamir Nawaz , Muhammad Babar Taj , Sónia Alexandra Correia Carabineiro

{"title":"Graphitic carbon nitride as an efficient carrier for anti-cancer drug systems: A review","authors":"Aamir Nawaz , Muhammad Babar Taj , Sónia Alexandra Correia Carabineiro","doi":"10.1016/j.nxnano.2024.100074","DOIUrl":"https://doi.org/10.1016/j.nxnano.2024.100074","url":null,"abstract":"<div><p>This review explores the integration of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) with model drugs and diverse formulations to obtain nanocomposites with potential for cancer therapy. Beyond the synthesis, the study also deals with cancer-affected organs, elucidates mechanisms of drug action and categorizes g-C<sub>3</sub>N<sub>4</sub>-based anti-cancer compositions. The responsive elements contributing to cancer inhibition under the chemotherapeutic influence include reactive oxygen species (ROS), mitochondrial potential, oxidative stress, magnetic responsiveness, profound thermal and photo energy penetration, metal retention toxicity, adenosine triphosphate (ATP) blockade in cancer cells, insulating microenvironments within tumours and immune-modulating antibodies. Notably, breast, prostate, lung, ovary and stomach cancers owe their genesis exclusively to abnormal cell proliferation. Our review reveals that the integration of model drugs (MD) with metal ions (MI) on g-C<sub>3</sub>N<sub>4</sub> (g-C<sub>3</sub>N<sub>4</sub>/MDMI) shows enhanced biological activity, compared to metal ions and model drugs alone. The paper refers to several characterization techniques to decipher intricate data patterns and facilitate explanations of <em>in vitro</em> analyses focused on cancer cell viability and proliferation. Upon analysis of all data, g-C<sub>3</sub>N<sub>4</sub> emerges as a compelling drug carrier, particularly within the anticancer drug delivery systems. This review not only emphasizes the immense potential of g-C<sub>3</sub>N<sub>4</sub> nanocomposites but also paves the way for future advancements in effective cancer treatments.</p></div>","PeriodicalId":100959,"journal":{"name":"Next Nanotechnology","volume":"6 ","pages":"Article 100074"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949829524000354/pdfft?md5=7b6fa939e7d220b79587ec455dc74e1a&pid=1-s2.0-S2949829524000354-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141090972","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