Nanocomposites最新文献_第8页

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection 功能化多壁碳纳米管/纳米银(f-MWCNT/AgNP)纳米复合材料作为多巴胺检测的非酶电化学生物传感器

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1948242

I. Anshori, Lavita Nuraviana Rizalputri, Raih Rona Althof, Steven Sean Surjadi, S. Harimurti, G. Gumilar, B. Yuliarto, M. Handayani

{"title":"Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection","authors":"I. Anshori, Lavita Nuraviana Rizalputri, Raih Rona Althof, Steven Sean Surjadi, S. Harimurti, G. Gumilar, B. Yuliarto, M. Handayani","doi":"10.1080/20550324.2021.1948242","DOIUrl":"https://doi.org/10.1080/20550324.2021.1948242","url":null,"abstract":"Abstract Dopamine (DA) is an important neurotransmitter in the kidney, cardiovascular system, and central nervous system, which abnormality is associated with many diseases. In this work, we synthesized a functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as the biosensing material to detect DA. The SEM, EDS, and TEM characterizations indicated the success of the functionalization process with MWCNT as the base material. The values of the linear range, the limit of detection (LOD), and the selectivity of the nanocomposite were all obtained from the Differential Pulse Voltammetry (DPV) measurements. The obtained LOD value was 0.2778 µM in the linear range of 0–8 µM, which is lower than the required concentration value for detecting DA in human urine (0.3–3 µM). The biosensor’s high selectivity on DA with the presence of other human-related biofluids was also reported. These results show that f-MWCNT/AgNP nanocomposites are a promising biosensor material for the detection of DA. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"9 1","pages":"97 - 108"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87262007","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: 28

One-pot scalable synthesis of rGO/AuNPs nanocomposite and its application in enzymatic glucose biosensor 还原氧化石墨烯/AuNPs纳米复合材料的一锅可扩展合成及其在酶促葡萄糖生物传感器中的应用

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1917837

Omer Sadak

{"title":"One-pot scalable synthesis of rGO/AuNPs nanocomposite and its application in enzymatic glucose biosensor","authors":"Omer Sadak","doi":"10.1080/20550324.2021.1917837","DOIUrl":"https://doi.org/10.1080/20550324.2021.1917837","url":null,"abstract":"Abstract A nanocomposite, rGO/AuNPs, was synthesized simultaneously using one-pot approach with gold nanoparticles (AuNPs) and reduced graphene oxide (rGO) within gelatin which used as a reducing and stabilizing agent. Then, the fabricated nanocomposites were characterized by UV-Vis, transmission electron microscope (TEM) and field emission scanning electron microscope (FE-SEM). The optimal nanocomposite was determined using electrochemical approaches. After facile and eco-friendly synthesis of rGO/AuNPs nanocomposites, it was used to fabricate the bioanode of enzymatic glucose biosensors. After drop-casting the nanocomposites on a screen-printed electrode (SPE), the glucose oxidase (GOx) was immobilized on the pre-treated SPE through a protein cross-linking approach using glutaraldehyde (GA) as a crosslinking reagent and 2,5-dihydroxybenzaldehyde (DHB) as a mediator to improve the electrochemical performance. Then, electrochemical performance of enzyme immobilized nanocomposites was studied using the potentiostat. The results demonstrate that the enzymatic biosensor made of rGO/AuNPs nanocomposites showed enhanced the sensitivity of selectivity for detection of glucose. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"303 1","pages":"44 - 52"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77212596","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: 14

A high-sensitivity hydrogen gas sensor based on carbon nanotubes fabricated on SiO2 substrate 基于碳纳米管的高灵敏度氢气传感器

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1977063

Ahmad M. Al-Diabat, Natheer A. Algadri, N. M. Ahmed, A. Abuelsamen, S. A. Bidier

引用次数: 10

Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide) 硅烷增容改善纤维素纳米晶在聚环氧乙烷中的分散性、热性能和力学性能

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1942641

S. Chanda, D. Bajwa, G. Holt, N. Stark, S. Bajwa, M. Quadir

{"title":"Silane compatibilzation to improve the dispersion, thermal and mechancial properties of cellulose nanocrystals in poly (ethylene oxide)","authors":"S. Chanda, D. Bajwa, G. Holt, N. Stark, S. Bajwa, M. Quadir","doi":"10.1080/20550324.2021.1942641","DOIUrl":"https://doi.org/10.1080/20550324.2021.1942641","url":null,"abstract":"Abstract Cellulose nanocrystal (CNC) has potential to be used as a reinforcement in polymeric nanocomposites because of their inherent biodegradability, universal accessibility, and superior mechanical properties. The most crucial challenge faced in the nanocomposite production is dispersing the nanoparticles effectively in the polymer matrix, so that the exceptional mechanical properties of the nanoparticles can be transferred to the macroscale properties to the bulk nanocomposites. In this research, a safe, effective and ecofriendly modification was used to functionalize the surface hydroxyl groups of CNC via silane treatment. These modified CNCs were used as reinforcements to prepare poly (ethylene oxide) (PEO)/CNC nanocomposites. The composites were prepared using solvent casting method. The composite properties were evaluated using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Thermo-Gravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and Dynamic Mechanical Analysis (DMA). The SEM micrographs demonstrated that the composites incorporated with silane treated CNCs showed improvement in the dispersion behavior of the nanoparticles in the matrix. Oxidative combustion of the composites containing silane treated CNCs promoted char formation and enhanced thermal stability. The composites containing (1:1) silane treated CNCs exhibited the better crystallization ability, highest storage modulus, and lowest tan δ value compared to the other silane treated systems indicating improved dispersion of CNC. The polysiloxane network provided an efficient surface covering of the CNC molecules, imparting reduced polar surface characteristics and enhancing the overall mechanical properties of the composites. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"105 1","pages":"87 - 96"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78088555","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: 8

Surface functionalization of nylon 66 membrane using para-phenylenediamine and carboxylic functionalized multi-walled carbon nanotubes for removal of calcium ions from aqueous solution 利用对苯二胺和羧基功能化多壁碳纳米管对尼龙66膜进行表面功能化以去除水溶液中的钙离子

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1972690

Duc-Binh Nguyen, N. T. Van, T. Nguyen, V. Vuong, D. Lai, M. T. Phong, T. Le

{"title":"Surface functionalization of nylon 66 membrane using para-phenylenediamine and carboxylic functionalized multi-walled carbon nanotubes for removal of calcium ions from aqueous solution","authors":"Duc-Binh Nguyen, N. T. Van, T. Nguyen, V. Vuong, D. Lai, M. T. Phong, T. Le","doi":"10.1080/20550324.2021.1972690","DOIUrl":"https://doi.org/10.1080/20550324.2021.1972690","url":null,"abstract":"Abstract Nylon 66, which is an important membrane class used in manufacturing of chitin and chitosan, have a number of features that can be improved by surface functionalizations into a novel composite structure with support of ultrasound and silica gel (SiG) catalyst in a doubled amidation reaction. Firstly, nylon 66/para-phenylenediamine thin film composite (NP-TFC) is prepared from commercial nylon 66 membrane in an ultrasound assisted hydrolysis-amidation reaction. Secondly, carboxylic functionalized multi-walled carbon nanotubes (MWCNT-COOH) are grafted on the NP fiber in an ultrasound assisted/SiG-catalyzed amidation reaction, where para-phenylenediamine (pPD) role is cross-linking. As an excellent result confirmed by either Fourier transform infrared (FTIR), Raman spectrometry or scanning electron microscopic (SEM), bundled MWCNTs bridges are easily built in SiG-catalyzed ethanol media to connect nylon 66 fibers at distances of 0.3–1 μm. The vacuum filtration test confirmed that as-prepared nylon 66/pPD/MWCNTs structure has superior Ca2+ rejection efficiency to that of original nylon 66. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"69 1","pages":"160 - 171"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74772477","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: 4

Flexural and shear properties of CFRP laminates reinforced with functionalized multiwalled CNTs 功能化多壁碳纳米管增强CFRP复合材料的弯曲和剪切性能

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2021-01-02 DOI: 10.1080/20550324.2021.1961507

G. Tefera, G. Bright, S. Adali

引用次数: 8

Nanoengineered electrospun fibers and their biomedical applications: a review 纳米工程电纺丝纤维及其生物医学应用综述

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-12-29 DOI: 10.1080/20550324.2020.1857121

Xi Zhang, Xuetao Shi, J. Gautrot, T. Peijs

引用次数: 29

Preparation of ZnTe thin films using chemical bath deposition technique 化学浴沉积法制备ZnTe薄膜

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-12-22 DOI: 10.1080/20550324.2020.1865712

Iman Ahmed Younus, A. Ezzat, M. Uonis

引用次数: 11

Effect of heat treatment on the microstructural properties of silica embedded cobalt ferrite nanocomposites 热处理对二氧化硅包埋钴铁氧体纳米复合材料微观组织性能的影响

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-12-18 DOI: 10.1080/20550324.2020.1865711

M. Bansal, D. Ahlawat, Amrik Singh, Vijay Kumar, S. P. Rathee

{"title":"Effect of heat treatment on the microstructural properties of silica embedded cobalt ferrite nanocomposites","authors":"M. Bansal, D. Ahlawat, Amrik Singh, Vijay Kumar, S. P. Rathee","doi":"10.1080/20550324.2020.1865711","DOIUrl":"https://doi.org/10.1080/20550324.2020.1865711","url":null,"abstract":"Abstract Silica coated cobalt ferrite (CoFe2O4:SiO2) nanocomposites were synthesized by co-precipitation technique using metal nitrates as precursors. The as-prepared samples were heat treated at different temperatures of 250, 500 and 750 °C for 24 h. Structural, thermal, and morphological behavior of nanocomposites are investigated by XRD, FTIR, TGA-DTG, and SEM characterization results, useful in biomedical applications. With increasing calcinations temperature from 250 to 500 °C and 750 °C an increase in crystallite size of CoFe2O4:SiO2 nanocomposites has been determined from 20.26 to 28.95 nm and 38.76 nm by Williamson–Hall method, respectively. Furthermore, by increasing the temperature from 250 to 750 °C the lattice parameter and strain values have been found to increase from 8.0321 to 8.0691 Å and 1.01 × 10−2 to 3.75 × 10−3, respectively. Analysis of TGA results found no weight loss when the sample was heated beyond 700 °C and thus complete decomposition of precursors has led to the formation of stable nanocomposite structures at high temperatures. SEM analysis of synthesized samples at 750 °C revealed well developed nanoparticles of CoFe2O4: SiO2 with inter-granular porosity. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"62 1","pages":"158 - 164"},"PeriodicalIF":4.6,"publicationDate":"2020-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77908047","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: 4

Synthesis of imidazoles promoted by H3PW12O40-amino-functionalized CdFe12O19@SiO2 nanocomposite h3pw12o40 -氨基功能化CdFe12O19@SiO2纳米复合材料促进咪唑的合成

IF 4.6 3区材料科学

Nanocomposites Pub Date : 2020-12-07 DOI: 10.1080/20550324.2020.1858246

J. Safaei‐Ghomi, Ali Kareem Abbas, Marzieh Shahpiri

引用次数: 4