PEMBUATAN LAPISAN TIPIS DAN SERBUK  TIMBAL TITANAT DENGAN METODA SOL GEL

ABSTRACT Thin layer and powder of lead titanate had been prepared using lead acetate and tetraethylorthotitanate as precursor by sol gel process. The thin layer of composite was obtain through layering the composite on glass substrate. Both thin layer and powder were calcined between 100-700°C and were characterized by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), UV and Fourier Transform Infra Red (FTIR). The diffraction pattern show that the structure of composite on glass substrate is amorf at 500°C and could not identified at 700°C while the powder is crystalline at 500 and 700°C. FTIR spectra shown the Ti-O peak at 1407 cm-1, the Pb-O and Pb-O-Ti peaks at 718 and 600 cm-1, respectively.

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PENGGUNAAN TiO2 PARTIKEL NANO HASIL SINTESIS BERBASIS AIR MENGGUNAKAN METODA SOL-GEL PADA BAHAN KAPAS SEBAGAI APLIKASI UNTUK TEKSTIL ANTI UV

Arena Tekstil ◽

10.31266/at.v28i1.1434 ◽

2013 ◽

Vol 28 (1) ◽

Author(s):

Maya Komalasari ◽

Bambang Sunendar

Keyword(s):

Fourier Transform ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Sol Gel ◽

Crosslinking Agent ◽

X Ray Diffraction ◽

Nano Tio2 ◽

X Ray ◽

Infra Red ◽

Scanning Electron

Partikel nano TiO2 berbasis air dengan pH basa telah berhasil disintesis dengan menggunakan metode sol-gel dan diimobilisasi pada kain kapas dengan menggunakan kitosan sebagai zat pengikat silang. Sintesis dilakukan dengan prekursor TiCl4 pada konsentrasi 0,3 M, 0,5 M dan 1 M, dan menggunakan templat kanji dengan proses kalsinasi pada suhu 500˚C selama 2 jam. Partikel nano TiO2 diaplikasikan ke kain kapas dengan metoda pad-dry-cure dan menggunakan kitosan sebagai crosslinking agent. Berdasarkan hasil Scanning Electron Microscope (SEM),diketahui bahwa morfologi partikel TiO2 berbentuk spherical dengan ukuran nano (kurang dari 100 nm). Karakterisasi X-Ray Diffraction (XRD) menunjukkan adanya tiga tipe struktur kristal utama, yaitu (100), (101) dan (102) dengan fasa kristal yang terbentuk adalah anatase dan rutile. Pada karakterisasi menggunakan SEM terhadap serbuk dari TiO2 yang telah diaplikasikan ke permukaan kain kapas, terlihat adanya imobilisasi partikel nano TiO2 melalui ikatan hidrogen silang dengan kitosan pada kain kapas. Hasil analisa tersebut kemudian dikonfirmasi dengan FTIR (Fourier Transform Infra Red) yang hasilnya memperlihatkan puncak serapan pada bilangan gelombang 3495 cm-1, 2546 cm-1, dan 511 cm-1, yang masing-masing diasumsikan sebagai adanya vibrasi gugus fungsi O-H, N-H dan Ti-O-Ti. Hasil SEM menunjukkan pula bahwa kristal nano yang terbentuk diantaranya adalah fasa rutile , yang berdasarkan literatur terbukti dapatberfungsi sebagai anti UV.

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Study on the Synthesis of Nano-Crystalline Mg2SiO4 Powders by Aqueous Sol-Gel Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.538.142 ◽

2013 ◽

Vol 538 ◽

pp. 142-145 ◽

Cited By ~ 1

Author(s):

X.F. Chen ◽

J. Li ◽

T.T. Feng ◽

Y.S. Jiang ◽

X.H. Zhang ◽

...

Keyword(s):

Thermal Analysis ◽

Sol Gel ◽

Magnesium Nitrate ◽

Metal Alkoxides ◽

X Ray Diffraction ◽

Calcination Process ◽

X Ray ◽

Nano Crystalline ◽

Sol Gel Process ◽

Scanning Electron

The forsterite-structure Mg2SiO4 was successfully synthesized by the aqueous sol-gel method using Si sols dioxide and magnesium nitrate as starting materials instead of expensive organic solvent and metal alkoxides. The as-prepared nanopowders were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscope (SEM), respectively. The results showed that the calcination process of gel consisted of a series of oxidation and combustion reactions, accompanied by significantly exothermal effects. Highly reactive nanosized Mg2SiO4 powders were successfully obtained at 850 °C with particle size of 60~80 nm.

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A Study on the Preparation of Nano-Crystalline Barium Titanate Powder by a Sol-Gel Method

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.121-123.53 ◽

2007 ◽

Vol 121-123 ◽

pp. 53-56 ◽

Cited By ~ 1

Author(s):

J. Azadmanjiri ◽

Hojjatollah K. Salehani ◽

A. Dehghan Hamedan ◽

M. Sadeghi

Keyword(s):

Crystallite Size ◽

Sol Gel ◽

X Ray Diffraction ◽

Uniform Size ◽

Impedance Analyzer ◽

X Ray ◽

Nano Crystalline ◽

Sol Gel Process ◽

Different Temperatures ◽

Scanning Electron

In this work, high purity BaTiO3 (BT) nano-powders by a sol-gel process was prepared with Ba(NO3)2 and Ti(C4H9O)4 materials in order to acquire uniform size grains. The effects of the crystallinity, microstructure of BT nano-powders calcined at different temperatures and dielectric properties of the ceramics were investigated by XRD, SEM and impedance analyzer, respectively. Scanning electron microscopy and X-ray diffraction investigation revealed cubic plates and crystallite size. The results revealed that crystallite size and calcination temperature of BT and influence on the dielectric constant.

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Preparation of Alumina Powders through Pyrocatechol, Resorcinol Mediated Sol-Gel Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.850.742 ◽

2016 ◽

Vol 850 ◽

pp. 742-747

Author(s):

Xiang Zhang ◽

Ping Yun Li ◽

Xiao De Guo ◽

Ting Yan

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

X Ray Diffraction ◽

X Ray ◽

Grain Sizes ◽

Xrd Study ◽

Transmission Electron ◽

Sol Gel Process ◽

Scanning Electron ◽

Organic Monomer

Ultrafine alumina powders were synthesized through pyrocatechol and resorcinol mediated sol-gel process. Aluminum nitrate was applied as the Al source and PVP was the dispersant. X-ray diffraction (XRD) study displayed that γ-Al2O3 powders formed in the range of 800-900 °C, and then γ-Al2O3 transformed to α-Al2O3 at higher temperatures, pure α-Al2O3 powders could be obtained at 1000 °C by using resorcinol as organic monomer. The results of transmission electron microscopy (TEM) revealed that Al2O3 nanoparticles with γ crystalline phase had grain sizes in the range of 5-40 nm. Scanning electron microscopy (SEM) observation displayed that the morphology of the prepared α-Al2O3 powders had aggregated bodies formed by Al2O3 grains in the range of 0.2-0.5μm. These results provide a new way of preparation of alumina powders.

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SYNTHESIS OF FexZn1-xCr2O4 BROWN CERAMIC PIGMENT BY STARCH ASSISTED SOL-GEL PROCESS

HUE UNIVERSITY JOURNAL OF SCIENCE NATURAL SCIENCE ◽

10.26459/hueuni-jns.v128i1b.5245 ◽

2019 ◽

Vol 128 (1B) ◽

pp. 13

Author(s):

Trần Ngọc Tuyền ◽

Nguyễn Đức Vũ Quyên ◽

Trần Bảo Lâm

Keyword(s):

Sol Gel ◽

Ceramic Pigment ◽

Physicochemical Characteristics ◽

Color Measurement ◽

Ceramic Pigments ◽

X Ray Diffraction ◽

Color Intensity ◽

X Ray ◽

Sol Gel Process ◽

Scanning Electron

In the present paper, the ceramic pigments of FexZn1-xCr2O4 (x = 0 ¸ 1) were synthesized by the starch assisted sol-gel method. The resulting pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), CIE L*a*b* color measurement. The results showed that the preparation pigments of FexZn1-xCr2O4, calcinated at 1100oC for 60 minutes, obtained phases of spinel ACr2O4 (A: Zn, Fe) and perovskite FeCrO3 with excellent crystallinity. The brown color intensity was gradually increased as a function of the amount of substituted Fe2+ ion. The achieved pigments met industrial requirements in terms of physicochemical characteristics.

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PENGARUH PERBANDINGAN MOLAR Ca/P DALAM PEMBUATAN LAPISAN TIPIS KALSIUM FOSFAT DARI PREKURSOR Ca(NO3)2.4H2O MELALUI METODE SOL-GEL

Jurnal Katalisator ◽

10.22216/jk.v1i2.1741 ◽

2016 ◽

Vol 1 (2) ◽

Author(s):

Veni Dayu Putri

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fourier Transform ◽

Calcium Phosphate ◽

Sol Gel ◽

Dip Coating ◽

X Ray Diffraction ◽

X Ray ◽

Infra Red ◽

Scanning Electron

ABSTRAK Pembuatan lapisan tipis kalsium fosfat dari kalsium nitrat tetrahidrad (Ca(NO3)2.4H2O) sebagai prekursor kalsium dan asam fosfat (H3PO4) sebagai prekursor fosfat dengan variasi perbandingan mol Ca/P 1.50 , 1.60 , 1.67 , 1.70 dan 1.80 melalui metode sol-gel telah dilakukan. Sol yang didapat dibakar pada suhu 1000oC sehingga terbentuk powder kalsium fosfat berwarna putih. Powder yang didapat dianalisis menggunakan Fourier Transform Infra Red Spectroscopy (FTIR), X-Ray Diffraction (XRD) dan Scanning Electron Microscopy (SEM). Analisis FTIR menunjukkan adanya serapan gugus PO43-, O-H, H2O, CO2, dan P2O74-. Difraksi sinar-X dari powder yang terbentuk memberikan puncak pada sudut 2θ yang berbeda yaitu Calsium Pyrophospate (Ca2P2O7) dan Hydroxyapatite HAP (Ca10(PO4)6(OH)2 pada perbandingan molar Ca/P 1.80 . Analisis SEM menghasilkan Hydroxyapatite dan Calsium Pyrophospate dengan distribusi partikel yang tidak merata dan berbentuk spheric. Proses pelapisan dilakukan pada plat kaca yaitu pada perbandingan mol Ca/P 1.80 menggunakan metode dip-coating dan kemudian dipanaskan pada suhu 400oC. Hasil analisa XRD pada lapisan kalsium fosfat memperlihatkan bahwa senyawa yang terbentuk berbentuk amorf. Sedangkan analisis menggunakan SEM memperlihatkan bahwa lapisan tipis kalsium fosfat memiliki morfologi permukaan yang halus, rapat, homogen dan berbentuk speric. Kata kunci : kalsium fosfat, hydroxyapatite, dip-coating, metode sol-gel ABSTRACT Preparation a thin layer of calcium phosphate using tetrahidrad calcium nitrate (Ca(NO3)2.4H2O) as a precursor of calcium and phosphoric acid (H3PO4) as a precursor of phosphate with a variation of the mole ratio Ca/P 1.50; 1.60, 1.67, 1.70 and 1.80 through the sol-gel method have been done. Sol obtained burned at a temperature of 1000oC to form white powder of calcium phosphate. Powder obtained were analyzed using Fourier Transform Infra Red Spectroscopy (FTIR), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). FTIR analysis showed absorption PO43- group, O-H, H2O, CO2, and P2O74-. X-ray diffraction from powder formed providing a peak at an angle 2θ different namely Calcium Pyrophospate (Ca2P2O7) and Hydroxyapatite HAP (Ca10(PO4)6(OH)2) at a molar ratio of Ca/P 1.80. Analysis of SEM produces Hydroxyapatite and Calcium Pyrophospate with particle distribution is uneven and shaped spheric. The coating process performed on glass plates with mole ratio of Ca/P 1.80 using a dip-coating and then heated at a temperature of 400oC. XRD analysis on a layer of calcium phosphate showed that the compound formed shaped amorphous. While using SEM analysis showed the morphology of thin layer of calcium phosphate are smooth, dense, homogeneous and shaped speric. Keywords : calcium phosphate, hydroxyapatite, dip-coating, sol-gel method

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Preparation, Dielectric and Magnetic Properties of Barium-Ferrite-Containing Microcrystalline Glass Ceramic by Citrate Sol-Gel Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.280-283.457 ◽

2007 ◽

Vol 280-283 ◽

pp. 457-460 ◽

Cited By ~ 2

Author(s):

Hai Jun Zhang ◽

Xiao Lin Jia ◽

Xi Yao ◽

Liang Ying Zhang

Keyword(s):

Dielectric Constant ◽

Barium Ferrite ◽

Sol Gel ◽

Glass Ceramics ◽

Complex Dielectric Constant ◽

Complex Permeability ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

Scanning Electron

Four kinds of barium-ferrite-containing microcrystalline glass ceramics, such as BaFe12O19/SiO2, BaFe12O19/SiO2-B2O3, BaFe12O19/SiO2-B2O3-K2O and BaFe12O19/SiO2-Al2O3-K2O were prepared by citrate sol-gel process, in which inceptive formation temperatures varied from 850°C to 1100°C. The complex dielectric constant and complex permeability of those glass ceramics were measured at 0.1-5.0GHz, and the frequency dependence of complex dielectric constant and permeability was studied. The microcrystalline glass ceramics were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM).

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SYNTHESIS AND CHARACTERIZATION OF Y2SiO5:Ce3+ PHOSPHOR MATERIALS BY SOL–GEL PROCESS

Surface Review and Letters ◽

10.1142/s0218625x10013771 ◽

2010 ◽

Vol 17 (01) ◽

pp. 59-62 ◽

Cited By ~ 4

Author(s):

YOUNG-JAE KO ◽

JONG KYU LEE ◽

MIN-CHEOL CHU ◽

DONG-SIK BAE

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

Synthesis And Characterization ◽

Luminescence Spectra ◽

Photoluminescence Spectra ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

Scanning Electron

Y 2 SiO 5: Ce 3+ particles was synthesized by sol–gel process. In all samples treated at 1100°C, monoclinic X 1 phase for all cerium concentration. Luminescence spectra shows broad Ce 3+ luminescence in Y 2 SiO 5 host, which picks around 450 nm. The synthesized and calcined powders were characterized by thermogravimetry-differential scanning calorimeter (TG-DSC), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and photoluminescence spectra (PL).

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Research on Properties of Ca3-x La xCo4O9 Thermoelectric Material with Adding La

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.613 ◽

2011 ◽

Vol 287-290 ◽

pp. 613-617 ◽

Cited By ~ 1

Author(s):

Li Peng Zhang ◽

Xian Jin Yu ◽

Zhi Wei Ge ◽

Yun Hui Dong ◽

Dang Gang Li

Keyword(s):

Electron Microscopy ◽

Thermoelectric Properties ◽

Thermoelectric Material ◽

Sol Gel ◽

High Electrical Conductivity ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

High Seebeck Coefficient ◽

Scanning Electron

Ca3Co4O9 and Ca3-xLaxCo4O9 powders were prepared by sol-gel process. The Ca-Co-O thermoelectric material ceramics were prepared. The ceramics materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microstructure and thermoelectric properties of ceramics were researched. The results indicate that the crystal of Ca3-xLaxCo4O9 with La adding growth ideally, the material had high density and low pore rate. The Ca3-xLaxCo4O9 ceramics contain directional array plate-shaped grains with layered structure. The thermoelectric properties of Ca3-xLaxCo4O ceramics were excellent. There were high Seebeck coefficient and high electrical conductivity for Ca3-xLaxCo4O9 ceramics. The power factor increased with temperature increasing.

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Research on Properties of Ca-Co-O Thermoelectric Material with Adding Sm

Materials Science Forum ◽

10.4028/www.scientific.net/msf.688.260 ◽

2011 ◽

Vol 688 ◽

pp. 260-265 ◽

Cited By ~ 1

Author(s):

Jie Chen Mu ◽

Xiu Ting Wei ◽

Li Peng Zhang

Keyword(s):

Electron Microscopy ◽

Thermoelectric Properties ◽

Thermoelectric Material ◽

Sol Gel ◽

High Electrical Conductivity ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

High Seebeck Coefficient ◽

Scanning Electron

Ca3Co4O9 and Ca3-xSmxCo4O9 powders were prepared by sol-gel process. The Ca-Co-O thermoelectric material ceramics were prepared. The ceramics materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microstructure and thermoelectric properties of ceramics were researched. The results indicate that the crystal of Ca3-xSmxCo4O9 with Sm adding growth ideally, the material had high density and low pore rate. The Ca3-xSmxCo4O9 ceramics contain directional array plate-shaped grains with layered structure. The thermoelectric properties of Ca3-xSmxCo4O ceramics were excellent. There were high Seebeck coefficient and high electrical conductivity for Ca3-xSmxCo4O9 ceramics. The power factor increased with temperature increasing.

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