Nano-Structures and Nano-Objects 

About: Nano-Structures and Nano-Objects is an academic journal published by Elsevier BV. The journal publishes majorly in the area(s): Nanoparticle & Catalysis. It has an ISSN identifier of 2352-507X. Over the lifetime, 619 publications have been published receiving 11391 citations. The journal is also known as: Nano-structures and nano-objects.

Recent developments in functionalized polymer nanoparticles for efficient drug delivery system

Abstract: To overcome the shortcomings of conventional dosage forms, targeted and modified drug delivery system came into existence. This was the time when a novel drug delivery system was in high demand. Nanoparticles are such type of targeted drug delivery system. Nanoparticles are colloidal particles which provide site-specific delivery of drugs. There are different kinds of nanoparticles, polymeric nanoparticles are one of a kind. Polymeric nanoparticles, nowadays, is one of the most researched topics. Their major advantages include good control over size, longer clearance time, improved therapeutic efficacy and reduced toxicity. Polymer-based nanoparticles come in various forms like dendrimers, ligand-based nanoparticles, polymeric micelles, PEGylated nanoparticles, etc. This chapter includes the various advancements in polymeric nanoparticles as well as advancements in the polymers that are used in their preparation. It reveals details about functionalized nanoparticles and its types. It finally discusses the use of various polymers in the drug delivery system in order to target varied diseases, taking cancer and vaginal diseases as an example. The chapter at the end also reveals the future aspect of functionalized polymeric nanoparticles.

Transition metal oxide nanoparticles as efficient catalysts in oxidation reactions

Abstract: Studies on nano-sized particles have been the range for the past 10–15 years. With rapid growth of metal oxide nanotechnologies during the last decades, the application of this material in the field of catalysis has become a substantial research area. In the past decades, the utilization of transition metal oxide nanoparticle catalysts for industrial application in the synthesis of important chemical intermediates has been investigated by industrial and academic communities. Compared to other catalysts, one of the outstanding properties of metal oxide nanoparticles in catalysis is represented by the high selectivity which allows discrimination within chemical groups and geometrical positions, favoring high yields of the desired product. This review is devoted to dealing with the application of transition metal oxide nanoparticles as catalyst for oxidations of sulfides, alcohols, olefins, and alkanes toward the synthesis of a variety of organic compounds, such as sulfoxides, aldehydes and ketones, carboxylic acids, epoxides and alcohols.

Synthesis of organic phase change materials (PCM) for energy storage applications: A review

Abstract: The present energy generation from renewable resources does not meet the current global demand for energy supply, and there is a need to come up with more innovative technologies that could bridge the gap between the energy supply and demand. Phase change materials (PCM) are one of the most effective and on-going fields of research in terms of energy storage. Especially, organic phase change materials (OPCM) has grabbed a lot of attention due to its excellent properties that can be combined with thermal energy storage systems to preserve renewable energy. However, the practical application of OPCM is restricted to thermal energy storage due to their low thermal conductivity and leakage during the phase change. Entrapping OPCM in a shell using different encapsulation techniques is the best solution to eradicate the leakage and boost the storage capacity of the material. This review mainly highlights the thermal energy storage and thermal properties associated with it. Moreover, we emphasise the selection of materials based on different properties and different encapsulation processes from macro to nanoscale level. Finally, the use of PCMs in various applications challenges faced, and future directions are also discussed.

Polymer grafted carbon nanotubes—Synthesis, properties, and applications: A review

Abstract: Carbon-based nanomaterials such as carbon nanotubes (CNTs) have become the most promising materials in biomedical, electronic and aerospace applications. When added to polymers, they can enhance the properties and the utility of the polymers to a large extent. This is because of their superior thermo-mechanical and electrical properties which can be effectively transferred to the resulting composites with their proper dispersion in the polymer matrix. But the uniform dispersion of CNTs in various polymer matrices is the major challenge faced by scientists. This paper critically reviews the different chemical strategies adopted for grafting polymers onto the CNTs which ultimately leads to better polymer-filler interaction and optimum filler dispersion for the development of high-performance polymer nanocomposites. This review also discusses the synthesis, properties, and applications of polymer grafted CNTs and their composites.

Synthesis of barium ferrite nanoparticles using rhizome extract of Acorus Calamus: Characterization and its efficacy against different plant phytopathogenic fungi

Abstract: A green technology for producing barium ferrite (BaFe12O19) nanoparticles (BFNP’s) using Acorus Calamus rhizome extract was realized. To confirm the phase of magnetoplumbite structure without any impurities, the method of powder X-ray diffraction was performed using the Rietveld analysis and the FullProf program with the P63/mmc (No. 194) space group. Unit cell parameters were a = 5.8902(2) A and c = 23.2103(7) A. According to Scherrer’s calculations, the average crystallite size was from ∼ 32 to ∼ 35 nm. The results of scanning electron microscopy confirmed that synthesized BFNP’s are tightly packed and have an average grain size of ∼ 70 nm. Raman and IR active modes predicted by group theory are observed at ∼ 175 cm−1 and ∼ 677 cm−1, which corresponds to the presence of a spinel structure and trigonal pyramidal position in barium hexaferrite. It was established that the spontaneous magnetization is ∼ 52 emu/g and coercive force is ∼ 440 mT at room temperature. In vitro studies were performed to evaluate the antifungal activity of BFNP’s against various plant pathogenic fungi, namely: Fusarium oxysporum, Alternaria alternata, Colletotrichum gloeosporioides and Marssonina rosae. The antifungal effect of BFNPs was determined for different phytopathogenic fungi at a multiple dose of 200 mg/L, 300 mg/L, 400 mg/L, 500 mg/L and 600 mg/L. The maximum inhibition of mycelial growth (76.67%) was detected at 600 mg/L against the growth of Fusarium oxysoporum mycelium. The data obtained show that BFNP’s synthesized using Acorus Calamus rhizome extract can be applied as a potential antifungal agent.