Synthesis of ZnO and ZrO2 Powders by Mechanochemical Processing

The ZnO and ZrO2 powders were prepared by mechanochemical processing and subsequent heat treatment of the starting powder of precursors mixture of ZnCl2 and Ca(OH)2, and ZrOCl2·8H2O and NaOH, respectively. Inert salt matrix, ether CaCl2 or NaCl, which prevents particle agglomeration was formed during mechanochemical solid state reaction. After mechanochemical treatment, samples were calcined at various temperatures. Selective removal of the matrix phase by washing the resulting powder with appropriate solvent yields almost pure ZnO and ZrO2 powders. Characterization of the powders was performed by X-ray diffraction (XRD), differential thermal and thermo gravimetric analysis (DTA−TG) and scanning electron microscopy (SEM).

Download Full-text

Rapid four-component synthesis of dihydropyrano[2,3-c]pyrazoles using nano-eggshell/Ti(IV) as a highly compatible natural based catalyst

BMC Chemistry ◽

10.1186/s13065-021-00734-5 ◽

2021 ◽

Vol 15 (1) ◽

Author(s):

Arefeh Dehghani Tafti ◽

Bi Bi Fatemeh Mirjalili ◽

Abdolhamid Bamoniri ◽

Naeimeh Salehi

Keyword(s):

Thermo Gravimetric Analysis ◽

Reaction Times ◽

Diffraction Field ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

X Ray ◽

Solvent Free Conditions ◽

High Yields ◽

Work Up

AbstractNano-eggshell/Ti(IV) as a novel naturally based catalyst was prepared, characterized and applied for the synthesis of dihydropyrano[2,3-c]pyrazole derivatives. The characterization of nano-eggshell/Ti(IV) was performed using Fourier Transform Infrared spectroscopy, X-ray Diffraction, Field Emission Scanning Electron Microscopy, Energy-Dispersive X-ray Spectroscopy, and Thermo Gravimetric Analysis. Dihydropyrano[2,3-c]pyrazoles were synthesized in the presence of nano-eggshell/Ti(IV) via a four component reaction of aldehydes, ethyl acetoacetate, malononitrile and hydrazine hydrate at room temperature under solvent free conditions. The principal affairs of this procedure are mild condition, short reaction times, easy work-up, high yields, reusability of the catalyst and the absence of toxic organic solvents.

Download Full-text

Synthesis of a novel magnetic polyacrylamide coagulant and its application in wastewater purification

Water Science & Technology ◽

10.2166/wst.2016.500 ◽

2016 ◽

Vol 75 (3) ◽

pp. 581-586 ◽

Cited By ~ 2

Author(s):

Zheng Zhou ◽

Aiqin Shan ◽

Yuxia Zhao

Keyword(s):

Suspended Solids ◽

Removal Rate ◽

Thermo Gravimetric Analysis ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Wastewater Purification ◽

Thermo Gravimetric ◽

Turbidity Removal ◽

X Ray ◽

Magnetite Fe3o4

In this study, a novel magnetic polyacrylamide (PAM) coagulant based on the core of magnetite (Fe3O4), with oleic acid serving as modifier and acrylamide as monomer, was synthesized to remove suspended solids in kaolin-suspended water. The composites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermo gravimetric analysis and scanning electron microscopy. The results demonstrated that 82.8% of turbidity removal rate was obtained in 5 min of static settling in simulated kaolin-suspended water. This proved to be superior to that of PAM and poly aluminum chloride. Also confirmed in this study was the fact that zeta potential was significantly correlated with turbidity removal.

Download Full-text

Physical and Chemical Properties of Mineral in Soils of Cassava Cropping Area: A Case Study in Chonburi Province

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.979.440 ◽

2014 ◽

Vol 979 ◽

pp. 440-443

Author(s):

W. Siriprom ◽

K. Teanchai ◽

S. Kongsriprapan ◽

J. Kaewkhao ◽

N. Sangwaranatee

Keyword(s):

Thermo Gravimetric Analysis ◽

Chemical Properties ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Xrd Pattern ◽

X Ray ◽

Physical And Chemical ◽

And Chemical Properties

The chemical and physical properties of topsoil and subsoil which collected from the cassava cropping area in Chonburi Province have been investigated. The characterization of both soil sample were used X-Ray Diffraction (XRD), Energy Dispersive X-Ray Fluorescence (EDXRF) while FTIR used to confirmed the formation of intermolecular bonding and Thermo-Gravimetric Analysis (TGA) used for investigated the crystalline. It was found that, the XRD pattern indicated quartz phase. The chemical composition by XRF reported that the soils samples consist of Si, Al, Ca, Fe, K, Mn, Ti, Cr, Zn, Ag and Cu. and TGA results, noticed that the removal of moisture and organics material.

Download Full-text

An Investigation and Characterization of Monkeypod Tree Flower Particulates Filled PLA Composites

10.21203/rs.3.rs-1161329/v1 ◽

2021 ◽

Author(s):

Balaji Ayyanar Chninnappan ◽

K. Marimuthu ◽

C. Bharathiraj ◽

B. Gayathri ◽

S. K. Pradep Mohan

Keyword(s):

Tensile Strength ◽

Flexural Strength ◽

Thermo Gravimetric Analysis ◽

Injection Molding Process ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Molding Process ◽

X Ray ◽

Samanea Saman

Abstract Samanea saman (SS) flower particulates were filled in Polylactic acid (PLA) composites were fabricated with different 0, 10, and 20 wt. % through the injection molding process. The elemental composition and morphology of SS PLA composites were studied through FESEM and Energy Dispersive X-ray analysis. Thermal stability of the SS PLA composites specimens was carried out through Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimeter (DSC). Crystal orientations studied through X-Ray Diffraction (XRD) showed the presence of the orthorhombic SS particulates. The properties of the composites were investigated such as tensile strength, compressive strength, flexural strength, and Shore D Hardness. It was found that 20 wt. % of SS filled PLA composites has a superior tensile strength of 43.76 MPa, the compression strength of 37.94 MPa, the flexural strength of 72.47 MPa, and Shore D Hardness of 80.1 SHN than pure PLA. SS particulates-filled PLA composites would be used for low-strength applications.

Download Full-text

Research on the Basic Properties of the Bamboo Charcoal Bonded Grinding Wheel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.416.416 ◽

2009 ◽

Vol 416 ◽

pp. 416-420 ◽

Cited By ~ 2

Author(s):

Wei Li ◽

Zhi Yang Song ◽

Tian Ming Yu ◽

Bao Gong Geng

Keyword(s):

Phenolic Resin ◽

Resin Composite ◽

Thermo Gravimetric Analysis ◽

Grinding Wheel ◽

Gravimetric Analysis ◽

Bamboo Charcoal ◽

X Ray Diffraction ◽

Thermo Gravimetric ◽

New Material

A new BCB (Bamboo Charcoal Bonded) grinding wheel was developed by bamboo charcoal-phenolic resin composite under vacuum for ELID grinding technology. The pyrolysis behavior of the new bamboo charcoal-phenolic resin material was studied by thermo gravimetric analysis (TGA), and structural characterization of the new material was performed by scanning electron microscopy (SEM), X-ray diffraction (XRD), the friction characteristics was also investigated in this paper.

Download Full-text

Thermal and Structural of Methyl Cellulose

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.979.307 ◽

2014 ◽

Vol 979 ◽

pp. 307-310 ◽

Cited By ~ 2

Author(s):

W. Siriprom ◽

S. Kongsriprapan ◽

K. Teanchai

Keyword(s):

Fourier Transform ◽

Infrared Spectroscopy ◽

Thermo Gravimetric Analysis ◽

Methyl Cellulose ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Biodegradable Film ◽

Thermo Gravimetric ◽

X Ray ◽

The Fourier Transform

The present study aims to investigate the physicochemical properties of the methyl cellulose. The information of this investigate has been used to reference in preparing biodegradable film. It was observed that the Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy show the hydrogen bond’s formation and the Energy Dispersive X-Ray Fluorescence (EDXRF) show the chemical and level of the composition element, which Copper (Cu) has the highest accumulate. Another that, the XRD spectra which investigated by X-Ray Diffraction (XRD) show the methyl cellulose had lowered crystalline. Another that, the Thermo-Gravimetric Analysis (TGA) was used to investigate the effect of heating and influence of thermal.

Download Full-text

Thermo Gravimetric Analysis Study of PMMA/TiO2 Nanocomposites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.832.816 ◽

2013 ◽

Vol 832 ◽

pp. 816-820

Author(s):

N.N. Hafizah ◽

Mohamad Hafiz Mamat ◽

Mohd Hanafiah Abidin ◽

Che Mohd Som Said ◽

Mohamad Rusop

Keyword(s):

Thermal Decomposition ◽

Particle Size ◽

Thermo Gravimetric Analysis ◽

Polymer Chains ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Thermo Gravimetric ◽

Analysis Study ◽

X Ray ◽

Filler Size

The polymer matrix of poly (metyl methacrylate) (PMMA) has been introduced with the titanium dioxide (TiO2) nanopowder to study the effects of the TiO2size on the properties of the nanocomposites. The particle size is playing an important role in determining the properties of the nanocomposite. The decrease the filler size has increase the thermal decomposition of the nanocomposites due to the higher amount of the filler between the polymer chains. The results of X-ray diffraction (XRD) and Energy Dispersive X-Ray Spectrometry (EDS) also were discussed in this paper.

Download Full-text

Preparation and Characterization of Conductive Polyaniline/Zirconia Nanoparticles Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.221.302 ◽

2011 ◽

Vol 221 ◽

pp. 302-307 ◽

Cited By ~ 4

Author(s):

Hui Huang ◽

Zhong Cheng Guo ◽

Wei Zhu ◽

Fa Chuang Li

Keyword(s):

In Situ Polymerization ◽

Thermo Gravimetric Analysis ◽

Zro2 Nanoparticles ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Thermo Gravimetric ◽

Maximum Conductivity ◽

Conductive Polyaniline

Conductive polyaniline/zirconia (PANI/ZrO2) composites have been synthesized by in-situ polymerization of aniline in the presence of ZrO2 nanoparticles. The structure and morph- ology of composites were characterized by Fourier-transform infrared spectra (FTIR), thermo- gravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscope (SEM). The conductivity was also investigated. The results showed that PANI and ZrO2 nanoparticles were not simply blended, and a strong interaction existed at the interface of ZrO2 and PANI. It was probably a composite at molecular level. The composites were more thermal stability than that of the pure PANI. XRD analyses confirmed PANI deposited on the surface of ZrO2 nanoparticles had no effect on crystallization performance of ZrO2 nanoparticles. Electrical conductivity measurements indicated that the conductivity of PANI/ZrO2 composites was much higher than that of PANI and the maximum conductivity obtained was 11.27S/cm at 15 wt% of ZrO2 nanoparticles.

Download Full-text

Two Steps Synthesis of Quaternary Metal Titanate of Ba2NiTi5O13 and Characterization

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.364.353 ◽

2011 ◽

Vol 364 ◽

pp. 353-358

Author(s):

Yin Chew Ker ◽

Abu Bakar Mohamad

Keyword(s):

Monoclinic Phase ◽

Sol Gel ◽

Thermo Gravimetric Analysis ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Thermo Gravimetric ◽

Pure Phase ◽

Average Size ◽

Sol Gel Synthesis

Quaternary metal oxide of Ba2NiTi5O13was synthesized by using two-step sol-gel method. Excess of titanium dioxide obtained from the first step of sol-gel synthesis, were subsequently reacted in second step of sol-gel synthesis in order to produce Ba2NiTi5O13monoclinic phase. Calcination temperature of 900 °C for as long as 8 hours was needed for obtaining pure phase of Ba2NiTi5O13. Homogenous micron sized particles of Ba2NiTi5O13with average size of 0.10 μm and narrow distribution were observed using Scanning Electron Microscopy (SEM). Besides, porous structures can also be seen distributed across the surface of the particles of Ba2NiTi5O13particles. Characterization of monoclinic phase of Ba2NiTi5O13was described based on the investigations of X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR) and Thermo Gravimetric Analysis (TGA).

Download Full-text

Preparation of α-Al2O3 Powders via Non-Hydrolytic Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1104.3 ◽

2015 ◽

Vol 1104 ◽

pp. 3-8 ◽

Cited By ~ 1

Author(s):

Tong Qing Zhou ◽

Ting Chen ◽

Wei Hui Jiang ◽

Jian Min Liu ◽

Xiao Jun Zhang ◽

...

Keyword(s):

Sol Gel ◽

Thermo Gravimetric Analysis ◽

Raw Material ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

Thermo Gravimetric ◽

X Ray ◽

Corundum Structure ◽

Transmission Electron ◽

Peg 600

Corundum structurealumina (α-Al2O3) powders were prepared via a non-hydrolytic sol-gel (NHSG) method using aluminum as raw material, ethanol as solvent, and iodine as catalyst. X-ray diffraction (XRD), differential thermal analysis (DTA), thermo gravimetric analysis (TG) were used to characterize the crystal phase of the products, while scanning electron microscopy (SEM) and transmission electron microscope (TEM) were employed to analyze the morphology. The results indicated that γ-Al2O3 was completely changed to α-Al2O3 at 1100 o C with a bit of aggregation. When 3 wt.% polyethylene glycol 600 (PEG 600) was introduced on the NHSG process, the dispersion was improved and the particle size decreased to100 nm.

Download Full-text