ChemInform Abstract: DENSITIES AND VISCOSITIES OF NONIDEAL GLASS-FORMING ZINC NITRATE HEXAHYDRATE-COPPER NITRATE TRIHYDRATE MELTS

1979 ◽  
Vol 10 (6) ◽  
Author(s):  
N. ISLAM ◽  
S. KUMAR ◽  
K. P. SINGH
Keyword(s):  
Copper Nitrate ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nitrate Hexahydrate ◽  
Glass Forming ◽  
Nitrate Trihydrate

Synthesis and Characterization of Nanocrystalline ZnO Powders by a Direct Thermal Decomposition Route Using Zinc Nitrate Hexahydrate

2013 ◽  
Vol 770 ◽  
pp. 68-71 ◽  
Author(s):  
Supphadate Sujinnapram ◽  
Uraiphorn Termsuk ◽  
Atcharawan Charoentam ◽  
Sutthipoj Sutthana
Keyword(s):  
Thermal Decomposition ◽  
Crystallization Temperature ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Absorption Peak ◽  
Synthesis And Characterization ◽  
Nitrate Hexahydrate ◽  
Different Temperatures ◽  
Zno Powders

The nanocrystalline ZnO powders were synthesized by a direct thermal decomposition using zinc nitrate hexahydrate as starting materials. The precursor was characterized by TG-DTA to determine the thermal decomposition and crystallization temperature which was found to be at 325 oC. The precursors were calcined at different temperatures of 400, 500, and 600°C for 4 h. The structure of the prepared samples was studied by XRD, confirming the formation of wurtzite structure. The synthesized powders exhibited the UV absorption below 400 nm (3.10 eV) with a well defined absorption peak at around 285 nm (4.35 eV). The estimated direct bandgaps were obtained to be 3.19, 3.16, and 3.14 eV for the ZnO samples thermally decomposed at 400, 500, and 600°C, respectively.

Synthesis of Supergrowth VACNTs and Nanostructured ZnO by Immerse Method

2011 ◽  
Vol 312-315 ◽  
pp. 1044-1048
Author(s):  
Salina Muhamad ◽  
Abu Bakar Suriani ◽  
Mohamad Zainizan Sahdan ◽  
Anuar Ahmad ◽  
Yosri M. Siran ◽  
...  
Keyword(s):  
Crystal Orientation ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
Vertically Aligned Carbon Nanotubes ◽  
X Ray ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned ◽  
Physical Changes

In this paper, the study of supergrowth VACNTs after being immersed in zinc oxide solution were presented. Vertically aligned carbon nanotubes (VACNTs) were first deposited on silicon with the orientation of [1 0 0] before being immersed in an aqueous solution of zinc nitrate hexahydrate and hexamethylenetetramine. Physical changes have been observed by scanning electron microscopy, SEM in the VACNTs, where the significant expansion of length of up to almost 0.8 mm was achieved after the immersion of 4.5 hr. The supergrowth of VACNTs was observed and analyzed by energy dispersive x-ray spectroscopy, EDX to substantiate the incorporation of CNTs and ZnO of the sample. Raman spectroscopy and x-ray diffraction, XRD were used to inspect the crystal orientation to support our findings.

Fabrication of Superhydrophobic Films on Aluminum Foils with Controllable Morphologies

2013 ◽  
Vol 641-642 ◽  
pp. 414-417 ◽  
Author(s):  
Yu Zhen Lv ◽  
Le Feng Wang ◽  
Kai Bo Ma ◽  
You Zhou ◽  
Cheng Rong Li
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Solution Method ◽  
Total Concentration ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Simple Solution ◽  
Molar Ratio ◽  
Nitrate Hexahydrate ◽  
Water Contact

In this study, porous architectures with controllable morphologies on Aluminum foils were fabricated by a simple solution method using zinc nitrate hexahydrate and hexamethylenetetramine as reactants. Unlike works reported previously, we show that the porous architectures on the surface of Aluminum foils can be adjusted by controlling the molar ratio and total concentration of reactants, which is proved to be of importance in tailoring the wettability of the surface. It is found that by adjusting the space of pores and the thickness of nanoslices, the water contact angle of the obtained surface can change from hydrophobic to superhydrophobic.

Growth of Highly Orientated and Well-Aligned ZnO Nanowhiskers Using Aqueous Solutions

2009 ◽  
Vol 620-622 ◽  
pp. 477-480
Author(s):  
Xiu Lan Hu ◽  
Yoshitake Masuda ◽  
Tatsuki Ohji ◽  
Kazumi Kato
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nitrate Hexahydrate ◽  
Single Crystalline ◽  
Conductive Glass ◽  
Branched Polyethylenimine

Length-tailored, monodisperse, highly orientated, single-crystalline hexagonal and aligned ZnO nanowhiskers were grown onto F-doped SnO2 conductive glass (FTO) substrate at 88 °C using an aqueous solution. The aqueous solution for growth of ZnO nanowhiskers included zinc nitrate hexahydrate, hexamethylenetetramine and polyethylenimine. The addition of branched polyethylenimine, which may be adsorbed on the nonpolar surface of ZnO crystals, improved the growth of ZnO nanowhiskers along the c-axis.

Effect of fuel content on luminescence and antibacterial properties of zinc oxide nanocrystalline powders synthesized by the combustion method

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97770-97782 ◽  
Author(s):  
Trilok K. Pathak ◽  
Ashwini Kumar ◽  
C. W. Swart ◽  
H. C. Swart ◽  
R. E. Kroon
Keyword(s):  
Zinc Oxide ◽  
Citric Acid ◽  
Antibacterial Properties ◽  
Combustion Method ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nanocrystalline Powders ◽  
Nitrate Hexahydrate ◽  
Citric Acid Monohydrate ◽  
Zno Powders

Nanoscale ZnO powders were synthesized via the combustion method using zinc nitrate hexahydrate as the source (oxidant) material and urea, and glycine or citric acid monohydrate as fuels.

Densities of nitrate hydrates used as phase change materials

2017 ◽  
Vol 10 (2) ◽  
pp. 79-83
Author(s):  
Vladimír Danielik ◽  
Dominika Szendreiová
Keyword(s):  
Phase Change Materials ◽  
Liquid Mixtures ◽  
Liquid System ◽  
Zinc Nitrate ◽  
Magnesium Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nitrate Hexahydrate ◽  
Temperature Dependency ◽  
Magnesium Nitrate Hexahydrate ◽  
Different Temperatures

AbstractTemperature dependency of densities of the liquid system magnesium nitrate hexahydrate - zinc nitrate hexahydrate was measured. Densities of liquid mixtures were experimentally measured at different temperatures by a method using submersible corpuscle. Based on the obtained data, temperature dependence on the density was obtained. A model describing the density in the whole concentration range very well was created.

ZnO Nanorod Arrays and Nanowires by Hydrothermal Growth

2010 ◽  
Vol 123-125 ◽  
pp. 811-814 ◽  
Author(s):  
Yi Su ◽  
Xiao Ping Zou ◽  
Xiang Min Meng ◽  
Gong Qing Teng ◽  
Gang Qiang Yang ◽  
...  
Keyword(s):  
Zno Nanorods ◽  
Ammonia Solution ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Hydrothermal Growth ◽  
Nitrate Hexahydrate ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Facile Fabrication

We are reporting here on an inexpensive and facile fabrication method for ZnO nanorod arrays by hydrothermal growth at low temperature (90°C). In our experiment, ZnO nanostructures were grown on glass substrate using an equimolar (0.1M) aqueous solution of Zn(NO3)2•6H2O (zinc nitrate hexahydrate) and C6H12N4 (HMTA) as precursors solution, and using ammonia solution to controlling the pH levels. It enable easily obtained arrayed ZnO nanorods on substrate, and nanowires which grown on nanorod arrays were identified after about 1 month in the air. The growth process of nanorods and the formation mechanism of nanowires were investigated.

Preparation and Characterization of ZnO Nanostructures with Different Precursors via Solochemical Technique

2011 ◽  
Vol 121-126 ◽  
pp. 1813-1817
Author(s):  
Marivone Gusatti ◽  
Carlos Eduardo Maduro de Campos ◽  
Gilvan Sérgio Barroso ◽  
Daniel Aragão Ribeiro de Souza ◽  
Humberto Gracher Riella ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Zinc Chloride ◽  
Hexagonal Wurtzite Structure ◽  
Rietveld Analysis ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Zno Nanocrystals

In this work, the precursors zinc nitrate hexahydrate and zinc chloride were used to synthesize zinc oxide (ZnO) nanocrystals, applying a simple solochemical technique. ZnO rod-like nanostructures were successfully obtained by chemical reaction between NaOH and zinc nitrate hexahydrate at 90 °C. The sample formed by chemical reaction between NaOH and zinc chloride at 90 °C showed the ZnO phase mixed with the Zn5(OH)8Cl2•H2O phase. Only after thermal treatment at 500 °C for 3 hours, the conversion of Zn5(OH)8Cl2•H2O in ZnO was achieved. The samples prepared with different precursors were characterized by X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Rietveld analysis to the X-ray diffraction data indicated that ZnO nanocrystals obtained have hexagonal wurtzite structure and nanometric-sized crystallites.

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