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Nanomaterials
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Design and Fabrication of Organic/Inorganic Nanocomposites
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Design and Fabrication of Organic/Inorganic Nanocomposites

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 23113

Special Issue Editor

Dr. Jong-Min Lim

E-Mail Website
Guest Editor
Micro/Nano Systems Laboratory, Department of Chemical Engineering, Soonchunhyang University, Asan, Republic of Korea
Interests: microfluidics; flow chemistry; optofluidics; nanoparticles; nanomedicines; photonic crystals; functional composites; superhydrophobic surfaces; surface modification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanocomposites are multiphase solid materials where at least one of the components has a nanoscale dimension. Even though the origins were not understood at that time, the inclusion of nanomaterials in a host matrix has been utilized for millennia to produce materials with unique properties. The historical examples are the Roman Lycurgus cup, medieval stained glass, Damascus steel, and carbon black reinforced rubber for automobile tires. Today, nanocomposites are widely employed in the scientific and industrial community to enhance the properties of materials significantly (e.g., mechanical, optical, electrical, thermal, magnetic, biological, electrochemical, and catalytic properties). This Special Issue of Nanomaterials aims to consider the current states of the arts in the fields of organic/inorganic nanocomposites. Since research on nanocomposites is a multidisciplinary area, this Special Issue welcomes all submissions focusing on the various technical advances, including but not limited to theoretical simulation, design, fabrication, or characterization of nanocomposites with various compositions, shapes, sizes, surface functional groups, etc.

Prof. Dr. Jong-Min Lim
Guest Editor

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Keywords

  • Nanocomposites
  • Polymer materials
  • Colloids
  • Nanoparticles
  • Nanowires
  • Carbon nanotube
  • Photonic crystal
  • Dispersion
  • Surface chemistry
  • Energy
  • Drug delivery
  • Catalysis
  • Electronic materials
  • Thermal interface materials

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Related Special Issue

Published Papers (6 papers)

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Research

21 pages, 4139 KiB  
Article
Methylene Blue Dye Adsorption from Wastewater Using Hydroxyapatite/Gold Nanocomposite: Kinetic and Thermodynamics Studies
by Kashma Sharma, Shreya Sharma, Vipasha Sharma, Pawan Kumar Mishra, Adam Ekielski, Vishal Sharma and Vijay Kumar
Nanomaterials 2021, 11(6), 1403; https://doi.org/10.3390/nano11061403 - 26 May 2021
Cited by 43 | Viewed by 4859
Abstract
The present work demonstrates the development of hydroxyapatite (HA)/gold (Au) nanocomposites to increase the adsorption of methylene blue (MB) dye from the wastewater. HA nanopowder was prepared via a wet chemical precipitation method by means of Ca(OH)2 and H3PO4 [...] Read more.
The present work demonstrates the development of hydroxyapatite (HA)/gold (Au) nanocomposites to increase the adsorption of methylene blue (MB) dye from the wastewater. HA nanopowder was prepared via a wet chemical precipitation method by means of Ca(OH)2 and H3PO4 as starting materials. The biosynthesis of gold nanoparticles (AuNPs) has been reported for the first time by using the plant extract of Acrocarpus fraxinifolius. Finally, the as-prepared HA nanopowder was mixed with an optimized AuNPs solution to produce HA/Au nanocomposite. The prepared HA/Au nanocomposite was studied by using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDX) analysis. Adsorption studies were executed by batch experiments on the synthesized composite. The effect of the amount of adsorbent, pH, dye concentration and temperature was studied. Pseudo-first-order and pseudo-second-order models were used to fit the kinetic data and the kinetic modeling results reflected that the experimental data is perfectly matched with the pseudo-first-order kinetic model. The dye adsorbed waste materials have also been investigated against Pseudomonas aeruginosa, Micrococcus luteus, and Staphylococcus aureus bacteria by the agar well diffusion method. The inhibition zones of dye adsorbed samples are more or less the same as compared to as-prepared samples. The results so obtained indicates the suitability of the synthesized sample to be exploited as an adsorbent for effective treatment of MB dye from wastewater and dye adsorbed waste as an effective antibacterial agent from an economic point of view. Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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9 pages, 2308 KiB  
Article
Strategy for Encapsulation of CdS Quantum Dots into Zeolitic Imidazole Frameworks for Photocatalytic Activity
by Ye Rim Son, Minseok Kwak, Songyi Lee and Hyun Sung Kim
Nanomaterials 2020, 10(12), 2498; https://doi.org/10.3390/nano10122498 - 12 Dec 2020
Cited by 15 | Viewed by 3685
Abstract
Encapsulating CdS quantum dots (QDs) into zeolitic imidazole framework-8 (ZIF-8) can offer several advantages for photocatalysis. Various types of capping agents have been used to encapsulate QDs into ZIF-8 nanopores. An effective method for encapsulating CdS QDs into ZIF-8 is to use 2-mercaptoimidazole [...] Read more.
Encapsulating CdS quantum dots (QDs) into zeolitic imidazole framework-8 (ZIF-8) can offer several advantages for photocatalysis. Various types of capping agents have been used to encapsulate QDs into ZIF-8 nanopores. An effective method for encapsulating CdS QDs into ZIF-8 is to use 2-mercaptoimidazole as the capping agent. This is because 2-mercaptoimidazole is similar to the imidazolate ligands of ZIFs and can used for capping active species with simultaneous encapsulation during the crystal growth of ZIF-8. Compared to other widely used capping agents such as polyvinylpyrrolidone (PVP), using 2-mercaptoimidazole for encapsulating CdS QDs into ZIF-8 revealed photocatalytic effects along with the molecular sieving effect when using differently sized molecular redox mediators such as methyl viologen (MV2+) and diquat (DQ2+). Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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13 pages, 4702 KiB  
Article
Flexible Transparent Heat Mirror for Thermal Applications
by Shimin Li, Qianqian Xu, Ziji Zhou, Wenchao Zhao, Xiaowen Li, Zhengji Wen, Yao Yao, Hao Xu, Huiyong Deng, Ning Dai and Jiaming Hao
Nanomaterials 2020, 10(12), 2479; https://doi.org/10.3390/nano10122479 - 10 Dec 2020
Cited by 6 | Viewed by 2782
Abstract
Transparent heat mirrors have been attracting a great deal of interest in the last few decades due to their broad applications, which range from solar thermal convection to energy-saving. Here, we present a flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film that [...] Read more.
Transparent heat mirrors have been attracting a great deal of interest in the last few decades due to their broad applications, which range from solar thermal convection to energy-saving. Here, we present a flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film that exhibits high transmittance in visible range and low emissivity in the thermal infrared region. Experimental results show that the temperature of the sample can be as high as 108 °C, which is ~23 °C higher than that of a blackbody control sample under the same solar radiation. Without solar radiation, the temperature of the PAIP thin film is ~6 °C higher than that of ordinary fabric. The versatility of the large-area, low-radiation-loss, highly-transparent and flexible hydrophobic PAIP thin film suggest great potential for practical applications in thermal energy harvesting and manipulation. Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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21 pages, 49096 KiB  
Article
Novel Pt-Ag3PO4/CdS/Chitosan Nanocomposite with Enhanced Photocatalytic and Biological Activities
by Mahsa Kiani, Mojtaba Bagherzadeh, Reyhaneh Kaveh, Navid Rabiee, Yousef Fatahi, Rassoul Dinarvand, Ho Won Jang, Mohammadreza Shokouhimehr and Rajender S. Varma
Nanomaterials 2020, 10(11), 2320; https://doi.org/10.3390/nano10112320 - 23 Nov 2020
Cited by 22 | Viewed by 4098
Abstract
Decorating photocatalysts with noble metal nanoparticles (e.g., Pt) often increases the catalysts’ photocatalytic activity and biomedical properties. Here, a simple and inexpensive method has been developed to prepare a Pt-Ag3PO4/CdS/chitosan composite, which was characterized and used for the visible [...] Read more.
Decorating photocatalysts with noble metal nanoparticles (e.g., Pt) often increases the catalysts’ photocatalytic activity and biomedical properties. Here, a simple and inexpensive method has been developed to prepare a Pt-Ag3PO4/CdS/chitosan composite, which was characterized and used for the visible light-induced photocatalytic and antibacterial studies. This synthesized composite showed superior photocatalytic activity for methylene blue degradation as a hazardous pollutant (the maximum dye degradation was observed in 90 min of treatment) and killing of Gram positive bacterial (Staphylococcus aureus and Bacillus cereus) as well as Gram negative bacteria (Klebsiella pneumoniae, Salmonella typhimurium, Escherichia coli, and Pseudomonas aeruginosa) under visible light irradiation. The antibacterial activity of CdS, CdS/Ag3PO4, and Pt-Ag3PO4/CdS/chitosan against E. coli, Pseudomonas aeruginosa, Salmonella typhimurium, Klebsiella pneumoniae, Staphylococcus aureus, and Bacillus cereus showed the zone of inhibition (mm) under visible light and under dark conditions at a concentration of 20 µg mL−1. Furthermore, the cell viability of the CdS/chitosan, Ag3PO4, Ag3PO4/CdS/chitosan, and Pt-Ag3PO4/CdS/chitosan were investigated on the human embryonic kidney 293 cells (HEK-293), Henrietta Lacks (HeLa), human liver cancer cell line (HepG2), and pheochromocytoma (PC12) cell lines. In addition, the results indicated that the photodegradation rate for Pt-Ag3PO4/CdS/chitosan is 3.53 times higher than that of CdS and 1.73 times higher than that of the CdS/Ag3PO4 composite. Moreover, Pt-Ag3PO4/CdS/chitosan with an optimal amount of CdS killed large areas of different bacteria and different cells separately in a shorter time period under visible-light irradiation, which shows significantly higher efficiency than pure CdS and other CdS/Ag3PO4 composites. The superb performances of this composite are attributed to its privileged properties, such as retarded recombination of photoinduced electron/hole pairs and a large specific surface area, making Pt-Ag3PO4/CdS/chitosan a valuable composite that can be deployed for a range of important applications, such as visible light-induced photocatalysis and antibacterial activity. Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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7 pages, 3302 KiB  
Article
Toward Multi-Functional Road Surface Design with the Nanocomposite Coating of Carbon Nanotube Modified Polyurethane: Lab-Scale Experiments
by Sang-Guk Yum, Huiming Yin and Sung-Hwan Jang
Nanomaterials 2020, 10(10), 1905; https://doi.org/10.3390/nano10101905 - 24 Sep 2020
Cited by 8 | Viewed by 2904
Abstract
A novel multi-functional road surface system is designed to improve safety, the efficiency of traffic flow, and environmental sustainability for future transportation systems. The surface coating, preforming temperature detection with heating element and hydrophobic features, were fabricated with a nanocomposite consisting of carbon [...] Read more.
A novel multi-functional road surface system is designed to improve safety, the efficiency of traffic flow, and environmental sustainability for future transportation systems. The surface coating, preforming temperature detection with heating element and hydrophobic features, were fabricated with a nanocomposite consisting of carbon nanotube (CNT) modified polyurethane (PU). The CNT/PU coating showed higher electrical conductivity as well as enhanced hydrophobic properties as the CNT concentration increased. The multifunctional properties of CNT/PU coatings were investigated for use in freezing temperature sensing and heating. The CNT/PU coatings showed high temperature sensitivity in the freezing temperature range with a negative temperature coefficient of resistance. In addition, the CNT/PU coatings had excellent heating performance due to the Joule heating effect. Therefore, the proposed CNT/PU coatings are promising for use as multifunctional road coating materials for detection of freezing temperature and deicing by self-heating. Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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12 pages, 3590 KiB  
Communication
Preparation of Boron Nitride Nanoplatelets via Amino Acid Assisted Ball Milling: Towards Thermal Conductivity Application
by Nan Yang, Haifeng Ji, Xiaoxia Jiang, Xiongwei Qu, Xiaojie Zhang, Yue Zhang and Binyuan Liu
Nanomaterials 2020, 10(9), 1652; https://doi.org/10.3390/nano10091652 - 22 Aug 2020
Cited by 22 | Viewed by 3876
Abstract
Hexagonal boron nitride nanoplatelets (BNNPs) have attracted widespread attention due to their unique physical properties and their peeling from the base material. Mechanical exfoliation is a simple, scalable approach to produce single-layer or few-layer BNNPs. In this work, two amino acid grafted boron [...] Read more.
Hexagonal boron nitride nanoplatelets (BNNPs) have attracted widespread attention due to their unique physical properties and their peeling from the base material. Mechanical exfoliation is a simple, scalable approach to produce single-layer or few-layer BNNPs. In this work, two amino acid grafted boron nitride nanoplatelets, Lys@BNNP and Glu@BNNP, were successfully prepared via ball milling of h-BN with L-Lysine and L-Glutamic acid, respectively. It was found that the dispersion state of Lys@BNNP and Glu@BNNP in water had been effectively stabilized due to the introduction of amino acid moieties which contained a hydrophilic carboxyl group. PVA hydrogel composites with Lys@BNNP and Glu@BNNP as functional fillers were constructed and extensively studied. With 11.3 wt% Lys@BNNP incorporated, the thermal conductivity of Lys@BNNP/PVA hydrogel composite was up to 0.91 W m−1K−1, increased by 78%, comparing to the neat PVA hydrogel. Meanwhile, the mechanical and self-healing properties of the composites were simultaneously largely enhanced. Full article
(This article belongs to the Special Issue Design and Fabrication of Organic/Inorganic Nanocomposites)
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