Study on the Preparation of Nano-Cu2O and its Morphology Control

2011 ◽  
Vol 328-330 ◽  
pp. 1355-1358 ◽  
Author(s):  
Bin Zhao ◽  
Di Ma
Keyword(s):  
Room Temperature ◽  
Catalytic Properties ◽  
Chemical Properties ◽  
Morphological Structure ◽  
Morphology Control ◽  
Nano Particles ◽  
Preparation Methods ◽  
Physical Chemical ◽  
Application Fields ◽  
Application Prospects

Nano-Cu2O has wide application prospects in the fields of chemical industry and engineering due to its special optical, electrical and catalytic properties. The nano-particles with different morphological structure and particle size have different physical-chemical properties and different application fields. Therefore, this article reviewed the preparation methods of Nano-Cu2O at high/room temperature and the key point of its morphology control.

scholarly journals Zero→Two-Dimensional Metal Nanostructures: An Overview on Methods of Preparation, Characterization, Properties, and Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1895
Author(s):  
Ming Yang ◽  
Xiaohua Chen ◽  
Zidong Wang ◽  
Yuzhi Zhu ◽  
Shiwei Pan ◽  
...  
Keyword(s):  
Low Cost ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Characteristic Size ◽  
Metal Nanostructures ◽  
Physical Parameters ◽  
Preparation Methods ◽  
Composition And Structure ◽  
Application Fields ◽  
Physical And Chemical

Metal nanostructured materials, with many excellent and unique physical and mechanical properties compared to macroscopic bulk materials, have been widely used in the fields of electronics, bioimaging, sensing, photonics, biomimetic biology, information, and energy storage. It is worthy of noting that most of these applications require the use of nanostructured metals with specific controlled properties, which are significantly dependent on a series of physical parameters of its characteristic size, geometry, composition, and structure. Therefore, research on low-cost preparation of metal nanostructures and controlling of their characteristic sizes and geometric shapes are the keys to their development in different application fields. The preparation methods, physical and chemical properties, and application progress of metallic nanostructures are reviewed, and the methods for characterizing metal nanostructures are summarized. Finally, the future development of metallic nanostructure materials is explored.

The soluble copolymers of polyalkylthiophenes with different molar ratios of co-mers

2015 ◽  
Vol 35 (3) ◽  
pp. 241-246 ◽  
Author(s):  
Wojciech Czerwiński ◽  
Rafał Malinowski
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Room Temperature ◽  
Chemical Properties ◽  
Ultraviolet Spectroscopy ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Molar Ratios ◽  
Physical Chemical ◽  
Commercial Applications

Abstract Three novel soluble copolymers of poly(3-penthylthiophene) [P(3PT)] and poly(3-phosphate diethyl 3-thienylmethyl) [P(3FT)] of different molar ratios of co-mers (3:1, 1:1 and 1:3) have been chemically synthesised. The final copolymers were obtained by functionalisation of poly(3-penthylthiophene-co-3-bromomethylthiophene) [P(3PT-co-3BT)] copolymers, because P(3FT) monomer does not couple in position 2-5′ of the copolymers. The structure and physical-chemical properties of resulting polymer was investigated by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), visible and ultraviolet spectroscopy (UV-Vis), photoluminescence and direct current (DC) measurements. By changing the molar ratios of monomers during synthesis we can “tailor” the photoemission of resulting copolymers. The room temperature conductivity distinctly increases after doping by electrons’ acceptor. The polymers studied are good candidates for potential commercial applications.

scholarly journals Genetic-geographical features of peat soil of Small Polissya

2013 ◽  
pp. 64-77
Author(s):  
Volodymyr Gaskevych ◽  
Maria Netzyk
Keyword(s):  
Key Words ◽  
Peat Soil ◽  
Chemical Properties ◽  
Morphological Structure ◽  
Morphological Features ◽  
Soil Protection ◽  
Laboratory Studies ◽  
Peat Soils ◽  
Rational Use ◽  
Physical Chemical

The characteristic of the genetic and geographic features of peat soils of Small Polissya was done. The geography of peat soils was outlined on the results of field and laboratory studies. Morphological structure, physical and physical-chemical properties of peat soils were analyzed. The current agroecological status of peat soil and the measures of the rational use and protection were considered. Key words: peat soils, peat, geography of peat soils, morphological features, drainage, degradation, soil protection.

scholarly journals PLGA-based drug delivery system for combined therapy of cancer: research progress

2021 ◽  
Author(s):  
Zhang Ruirui ◽  
He Jian ◽  
Ximei Xu ◽  
Li Shengxian ◽  
Peng Hongmei ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Combined Therapy ◽  
Drug Carrier ◽  
Chemical Properties ◽  
Nano Particles ◽  
Research Progress ◽  
Bioactive Substances ◽  
Preparation Methods ◽  
Drug Carrier System ◽  
Physical And Chemical

Abstract In recent years, PLGA micro/nano particle drug delivery systems has been widely used in cancer treatment. According to the unique properties of PLGA, carriers of various structures are designed to keep the function of drugs or bioactive substances, ensure the effective load of molecules and improve the bioavailability of drugs in diseased parts. PLGA is one of the earliest and most commonly used biodegradable materials. It is often used for functional modification with other polymers (such as polyethylene glycol and chitosan) or other molecules (such as aptamers and ligands) to deliver various small molecule drugs (such as DOX and DTX) and bioactive macromolecules (such as proteins and nucleic acids) to improve targeting, controlled release and therapeutic properties. In this paper, the preparation methods, physical and chemical properties and medical applications of PLGA micro/nano particles are discussed. We focused on the recent research progress of the PLGA-based drug carrier system in tumor combination therapy.

Green synthesis of mixed metallic nanoparticles using room temperature self-assembly

2017 ◽  
Vol 13 (2) ◽  
pp. 4671-4677 ◽  
Author(s):  
A. M. Abdelghany ◽  
A.H. Oraby ◽  
Awatif A Hindi ◽  
Doaa M El-Nagar ◽  
Fathia S Alhakami
Keyword(s):  
Self Assembly ◽  
Metallic Nanoparticles ◽  
Room Temperature ◽  
Bimetallic Nanoparticles ◽  
Reduction Process ◽  
Nano Particles ◽  
Nano Structure ◽  
Small Shift ◽  
Molar Ratios ◽  
Vis Spectroscopy

Bimetallic nanoparticles of silver (Ag) and gold (Au) were synthesized at room temperature using Curcumin. Reduction process of silver and gold ions with different molar ratios leads to production of different nanostructures including alloys and core-shells. Produced nanoparticles were characterized simultaneously with FTIR, UV/vis. spectroscopy, transmission electron microscopy (TEM), and Energy-dispersive X-ray (EDAX). UV/vis. optical absorption spectra of as synthesized nanoparticles reveals presence of surface palsmon resonance (SPR) of both silver at (425 nm) and gold at (540 nm) with small shift and broadness of gold band after mixing with resucing and capping agent in natural extract which suggest presence of bimetallic nano structure (Au/Ag). FTIR and EDAX data approve the presence of bimetallic nano structure combined with curcumin extract. TEM micrographs shows that silver and gold can be synthesized separately in the form of nano particles using curcumin extract. Synthesis of gold nano particles in presence of silver effectively enhance and control formation of bi-metallic structure.

Chlorinated Organics in Nearshore Waters and Tributaries of the St. Clair River

1986 ◽  
Vol 21 (3) ◽  
pp. 344-350 ◽  
Author(s):  
Barry G. Oliver ◽  
Klaus L.E. Kaiser
Keyword(s):  
United States ◽  
Suspended Sediment ◽  
Waste Disposal ◽  
Large Volume ◽  
Water Samples ◽  
Chemical Properties ◽  
Low Level ◽  
Chemical Company ◽  
Physical Chemical ◽  
The Individual

Abstract The concent rat ions of hexachloroethane (HCE), hexachlorobutadiene (HCBD), pentachlorobenzene (QCB), hexachlorobenzene (HCB) and octachlorostyrene (OCS) in large volume water samples show that the major sources of these chemicals to the St. Clair River are Dow Chemical Company effluents and, to a lesser degree, Sarnia’s Township ditch which drains one of Dow’s waste disposal sites. Tributaries entering the river on both sides of the Canada/United States border contain measurable concentrations of these chemicals indicating low level contamination throughout the area. The degree of water/suspended sediment partitioning of the chemicals (Kp) was studied. Kp values for the individual chemicals changed in a manner consistent with changes in their physical-chemical properties.

Nanocrystals: The Preparation, Precise Control and Application Toward the Pharmaceutics and Food Industry

2018 ◽  
Vol 24 (21) ◽  
pp. 2425-2431 ◽  
Author(s):  
Cao Wu ◽  
Zhou Chen ◽  
Ya Hu ◽  
Zhiyuan Rao ◽  
Wangping Wu ◽  
...  
Keyword(s):  
Food Industry ◽  
Chemical Properties ◽  
Preparation Methods ◽  
Precise Control ◽  
Significant Process ◽  
Technology Applications ◽  
And Performance ◽  
Physical And Chemical ◽  
Analytical Technology ◽  
And Chemical Properties

Crystallization is a significant process employed to produce a wide variety of materials in pharmaceutical and food area. The control of crystal dimension, crystallinity, and shape is very important because they will affect the subsequent filtration, drying and grinding performance as well as the physical and chemical properties of the material. This review summarizes the special features of crystallization technology and the preparation methods of nanocrystals, and discusses analytical technology which is used to control crystal quality and performance. The crystallization technology applications in pharmaceutics and foods are also outlined. These illustrated examples further help us to gain a better understanding of the crystallization technology for pharmaceutics and foods.

Sign in / Sign up

Export Citation Format

Share Document