Synthesis of La2(Zr0.7Ce0.3)2O7 nanopowder using a simple chemical precipitation method and heat treatment at high temperature

2019 ◽  
Vol 110 (8) ◽  
pp. 757-764 ◽  
Author(s):  
Pejman Rezaei Taleghani ◽  
Zia Valefi ◽  
Naser Ehsani
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Simple Chemical

Synthesis of FeC2O4-Graphene Composites and their Application in Removal Dyes

2012 ◽  
Vol 463-464 ◽  
pp. 533-537 ◽  
Author(s):  
Shui Sheng Wu ◽  
Ya Ming Wang ◽  
Qing Ming Jia ◽  
Li Li Gu ◽  
Yan Lin Sun
Keyword(s):  
Energy Storage ◽  
Graphene Nanosheets ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Energy Storage Materials ◽  
Graphene Sheets ◽  
Storage Materials ◽  
Simple Chemical

A well-organized composite of graphene nanosheets decorated with FeC2O4 particles was synthesized through a simple chemical precipitation method. The FeC2O4 nanoparticles obtained were 100-150 nm in size and homogeneously anchored on graphene sheets as spacers to keep the neighboring sheets separated. The FeC2O4-graphene exhbited excellent performances in absorption propties and supercapacitor make potential uses as environment and energy storage materials in future.

Influence of Zinc Substitution on Hydroxyapatite Structure Prepared by Chemical Precipitation Method

2018 ◽  
Vol 879 ◽  
pp. 3-7 ◽  
Author(s):  
Nisakorn Nuamsrinuan ◽  
Patcharin Naemchanthara ◽  
Pichet Limsuwan ◽  
Kittisakchai Naemchanthara
Keyword(s):  
Heat Treatment ◽  
Fourier Transforms ◽  
Chemical Precipitation ◽  
Zinc Nitrate ◽  
Treatment Temperature ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Phosphate Phase ◽  
Chicken Eggshell ◽  
Hydroxyapatite Phase

The zinc (Zn) substituted hydroxyapatite were synthesized using a chemical precipitation method. The chemical precursors were prepared from di-ammonium hydrogen orthophosphate, calcium oxide (CaO) derived from chicken eggshell and zinc nitrate (Zn(NO3)2). The Zn(NO3)2contents in the prepared samples were varied from 1 to 25 %wt of CaO. The Zn substituted hydroxyapatite were heated at the various temperatures from 200 to 1300 °C in the furnace with an incremental temperature of 100 °C. The crystal structure, function group and morphology of sample were analyzed by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM), respectively. The results show that the hydroxyapatite doped Zn was a hydroxyapatite phase as well as pure hydroxyapatite. The crystalline size of sample decreased with increasing the Zn content. And, the crystallinity of hydroxyapatite phase was increased following by increasing heat treatment temperature. However, the amount of Zn has the effect on phase transformation of hydroxyapatite phase after heat treatment. Zn concentration accelerates hydroxyapatite transforms to β-tricalcium phosphate phase.

Preparation of NiO/MWNTs Nanocomposites by a Simple Chemical Precipitation Method

2009 ◽  
Vol 56 (3) ◽  
pp. 475-479 ◽  
Author(s):  
Xiao-Ning Liao ◽  
Chang-Yuan Hu ◽  
Qiao-Ling Wang ◽  
Feng-Yi Li
Keyword(s):  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Simple Chemical

Modification of Structural and Vibrational Properties of ZnO Nanoparticles Prepared by Simple Chemical Precipitation Method

2016 ◽  
Vol 675-676 ◽  
pp. 138-141 ◽  
Author(s):  
Natpasit Chaithanatkun ◽  
Korakot Onlaor ◽  
Thutiyaporn Thiwawong ◽  
Benchapol Tunhoo
Keyword(s):  
Electron Microscope ◽  
Vitamin C ◽  
Structural Properties ◽  
Zno Nanoparticles ◽  
Hexagonal Phase ◽  
Chemical Precipitation ◽  
Zinc Nitrate ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Simple Chemical

In this work, zinc oxide (ZnO) nanoparticles were synthesized by simple chemical precipitation method in the present of zinc nitrate as zinc precursor and sodium hydroxide as hydroxide precursor. The vitamin C was used as modifier media to modify the structural properties of ZnO nanoparticles. The microstructures of ZnO nanoparticles were characterized by field emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM). Selected area electron diffraction (SAED) patterns showed that polycrystalline hexagonal phase of ZnO. The defects and impurity contents in nanoparticles were investigated by Fourier transform infrared (FT-IR) spectroscopy. The results show few carboxylate and hydroxyl impurities for larger particles when addition modifier increases. Surface areas of nanoparticles were measured by Brunauer Emmett Teller (BET) method. In addition, the results exhibited the dramatically change in structural properties of ZnO nanoparticles due to the effect of vitamin C.

A facilely-synthesized polyanionic cathode with impressive long-term cycling stability for sodium-ion batteries

2021 ◽  
Author(s):  
Jie Li ◽  
Yuruo Qi ◽  
Fangyuan Xiao ◽  
Shu-Juan Bao ◽  
Mao-Wen Xu
Keyword(s):  
Room Temperature ◽  
Chemical Precipitation ◽  
Sodium Ion ◽  
Interlayer Distance ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Sodium Ion Batteries ◽  
Simple Chemical ◽  
First Time

In this work, the nanoflower-like Na0.5VOPO4·2H2O with a large interlayer distance of 6.5295 Å is synthesized via a simple chemical precipitation method at room temperature. It is the first time...

Influence of Zn doping on the electrochemical capacitor behavior of MnO2 nanocrystals

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 45407-45415 ◽  
Author(s):  
R. Poonguzhali ◽  
N. Shanmugam ◽  
R. Gobi ◽  
A. Senthilkumar ◽  
R. Shanmugam ◽  
...  
Keyword(s):  
Electrochemical Capacitor ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Zn Doping ◽  
Simple Chemical ◽  
Different Levels ◽  
Electrodes For Supercapacitors

Herein, we suggest a simple chemical precipitation method for the preparation of bare and different levels of Zn doped MnO2 nanoparticles as electrodes for supercapacitors.

Structural and morphological characterization of CdS nanoparticles

2020 ◽  
Vol 10 ◽  
Author(s):  
Manish Dwivedi ◽  
Vijay Tripathi ◽  
Dhruv Kumar ◽  
Dwijendra K. Gupta
Keyword(s):  
Blue Shift ◽  
Chemical Precipitation ◽  
Morphological Characterization ◽  
Precipitation Method ◽  
Cds Nanoparticles ◽  
Cubic Phase ◽  
Simple Chemical ◽  
Xrd Patterns ◽  
Average Size ◽  
Physical Tools

Aims: CdS nanoparticles are an attractive material having application in various field like as pigment in paints, biotag for bioimaging and many more optoelectronic as well as biological applications. Present study aims to synthesize and characterize the CdS nanoparticles to make it applicable in different areas Objectives: Preparation CdS nanoparticles by using simple and facile chemical methods and further physical and structural characterization using various physical tools Methods: In present work CdS nanoparticles has been synthesized by using rationally simple chemical precipitation method with some modi-fication on temperature and incubation time in existed methods. Characterizations were done by employing XRD, SEM, TEM, AFM tech-niques Results: Simple chemical method produces the CdS nanoparticles with the size about 100-200 nm in length and 5-10 nm in diameter. The SEM studies show that the CdS nanoparticles can agglomerate and form a continuous network like structure. The X-ray diffraction (XRD) measurements show the single-phase formation of CdS nanoparticles with the structure of cubic phase, and the broadening of XRD patterns indicates that the prepared samples are nanostructured. Our analysis on CdS nanoparticles by using transmission electron microscope and atomic force microscope (AFM) revealed that the nanoparticles form both spherical and nearly rod shaped with the average size applicable for biotagging. UV-Vis spectroscopic analysis reveals blue shift in the absorption peak probably caused by quantum confinement Conclusion: The observed CdS nanoparticles were appeared yellow in color. The XRD pattern of the CdS nanoparticles showed that the materials were of nanometric sized regime with a predominantly cubic phase along with the rod and round morphology. The study and char-acterization of CdS nanoparticles will bring us a new approach to understand biological problem by tagging nanoparticles with biomolecules and further suggests that the CdS nanoparticles formulate it more suitable biocompatible nanomaterial for biotagging and bioimaging

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