Synthesis of Perovskite Brown Pigments

2011 ◽  
Vol 695 ◽  
pp. 303-306
Author(s):  
In Don Joo ◽  
Kyong Sop Han ◽  
Byung Ha Lee
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Sem Analysis ◽  
Heating Condition ◽  
X Ray Diffraction ◽  
Soaking Time ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Cie Lab ◽  
Scanning Electron

This study aims to synthesize Cr doped Perovskite brown pigments. The pigment were synthesized by doping Cr2O3(0.01 ~ 0.05mole) for TiO2(0.993 ~ 0.963 mole) at 1150 ~ 1350°C. The samples were characterized by X-ray diffraction (XRD), Raman Spectrometer, Scanning Electron Microscope(SEM) and the UV/Vis spectroscopy. The optimum composition was CaCr0.03Ti0.978O3and heating condition was 1300°C for 3h of soaking time. The doped Cr ion for Perovskite was observed to be Cr(Ⅲ) and Cr(Ⅳ). The brown color was mixed with violet doped by Cr4+(3A2 → 3T2) and Blueish-Green doped by Cr3+(4A2g → 4F1g). The results of SEM analysis showed the Perovskite structure and the particle size was approximately 2µm. The color in Frit 6060 glaze adding 10wt% pigment was Redish Brown, and CIE Lab parameters were L*= 41.53, a*=13.27 and b*=9.94 .

The Effect of CaCO3 Addition on Physical Properties of ZnO-Based Crystal Glaze

2012 ◽  
Vol 620 ◽  
pp. 12-16 ◽  
Author(s):  
Abdul Rashid Jamaludin ◽  
Shah Rizal Kasim ◽  
Zainal Arifin Ahmad
Keyword(s):  
Electron Microscope ◽  
Calcium Carbonate ◽  
Scanning Electron Microscope ◽  
Physical Properties ◽  
Crystallization Temperature ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

The effects of calcium carbonate (CaCO3) addition on the physical properties of ZnO-based crystal glaze batches were investigated. Samples were fired at different gloss firing temperatures ranging from 1180-1220°C with 3 hours soaking at 1060°C crystallization temperature. X-ray diffraction (XRD) analysis identifiedthe crystal phase occurred as willemite (Zn2SiO4) and the scanning electron microscope (SEM) analysis indicated that willemite crystals are in the acicular needle like shape that formed spherulite. The intensities of willemite peaks decreased with CaCO3 addition and completely vanished at 5.0 wt% CaCO3. Varied formation of spherulites developed of the surface of crystal glaze as the flows of the glaze stretched further as the amount of CaCO3 increased.

scholarly journals Characterization of Fe Doped AC/TiO2

2019 ◽  
Vol 8 (12S) ◽  
pp. 1146-1147
Keyword(s):  
Activated Carbon ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Anatase Phase ◽  
Sol Gel ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Abstract: The photocatalytic composite Fe doped AC/TiO2 has been prepared by sol-gel method. The prepared Fe doped AC/TiO2 composite were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD).The SEM analysis showed that Fe and TiO2 were attached to the Activated Carbon surfaces. The X-Ray Diffraction data showed that Fe doped AC/TiO2 composite mostly contained anatase phase.

Preparation and Characterisation of Amorphous Silica from Alkali Wastewater Produced in Manufacturing Process of ZrOCl2

2011 ◽  
Vol 194-196 ◽  
pp. 2164-2168 ◽  
Author(s):  
Bai Kun Wang ◽  
Hao Ding ◽  
Yun Xing Zheng ◽  
Ning Liang
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Amorphous Silica ◽  
Manufacturing Process ◽  
Zirconium Oxychloride ◽  
Silica Content ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

The amorphous silica was prepared from the alkali wastewater rich in Na2O•nSiO2 produced in manufacturing process of zirconium oxychloride (ZrOCl2). The composition and microstructure of amorphous silica were studied by X-ray diffraction, X-ray fluorescence and scanning electron microscope, respectively. The results showed that the amorphous silica was mainly composed of uncrystallized substance, and the silica content was 96.4%. Its whiteness was 97.5% and the particle size was between 100nm and 200nm without agglomeration. The specific surface area of the amorphous silica was 531.9 m2/g, and its pore volume and diameter were 0.945 cm3/g and 4.94 nm, respectively.

The Fabrication and Characterization for Ag/C Catalysts

2012 ◽  
Vol 616-618 ◽  
pp. 1845-1848
Author(s):  
Jia Jun Han ◽  
Jin Ning Cheng ◽  
Feng Wen Pan ◽  
Xin Kui Liu ◽  
Fang Zhang
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Silver Nitrate ◽  
Polymeric Complex ◽  
Mass Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fabrication And Characterization ◽  
Different Content ◽  
Scanning Electron

In this research, Ag/C catalysts was respectively prepared by application of the polymeric complex protection for Ag(I) in different content of Ag. According to the characterizations by X-ray diffraction and scanning electron microscope, it was proved that the particle size of Ag , which was obtained by application of the polymeric complex protection for Ag(I), was related to the mass ratio of PVP and silver nitrate, the concentration of silver nitrate and sodium borohydride. Simultaneously the electrocatalytic activity of Ag/C catalysts is discussed through the polarization curves.

Study on Preparation of LiNi0.5Co0.2Mn0.3O2 Precursor-Spherical Ni0.5Co0.2Mn0.3O2(OH)2

2015 ◽  
Vol 816 ◽  
pp. 676-681 ◽  
Author(s):  
Xiao Long Qu ◽  
Zheng Fu Zhang ◽  
Jin Cheng ◽  
Xiao Yan Wang
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tap Density ◽  
Homogeneous Particle ◽  
Co Precipitation ◽  
Scanning Electron

The spherical Ni0.5Co0.2Mn0.3(OH)2 powders were prepared by ammonia-hydroxide co-precipitation method. The influence of different synthesizing factors on the precursors characteristic were investigated. The product prepared with optimized condition has tap density of D≥1.7g·cm-3, and middle particle size D50≈3.6μm. The X-ray diffraction (XRD) results showed that the precursor can be indexed by a hexagonal β-Ni (OH)2 structure. The scanning electron microscope (SEM) results showed that the powders had quasi-spherical pattern and homogeneous particle size distribution.

CuO Microspheres Synthesized via the Easy Hydrothermal Method

2012 ◽  
Vol 159 ◽  
pp. 84-87
Author(s):  
Xiao Ming Fu
Keyword(s):  
Electron Microscope ◽  
Reaction Time ◽  
Scanning Electron Microscope ◽  
Hydrothermal Method ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cuo Microspheres ◽  
Scanning Electron

CuO microspheres are successfully synthesized with CuCl2 as copper source and Na2CO3 as auxiliary salt at 240 °C for 24 h via the easy hydrothermal method. The phase and the morphologies of the samples have been characterized and analyzed by XRD (X-ray diffraction) and SEM (Scanning electron microscope), respectively. XRD analysis shows that the phase of as obtained samples is CuO. SEM analysis confirms that the increase of the reaction time, the reaction temperature and the auxiliary salt is propitious to synthesize CuO microspheres.

scholarly journals Fabrication of Nanoparticle-Stacked 1,1-Diamino-2,2-Dinitroethylene (FOX-7) Microspheres with Increased Thermal Stability

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yuanping Zhang ◽  
Conghua Hou ◽  
Xinlei Jia ◽  
Jinyu Wang ◽  
Yingxin Tan
Keyword(s):  
Thermal Stability ◽  
Particle Size ◽  
Performance Test ◽  
Crystal Form ◽  
Sem Analysis ◽  
Test Results ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Scanning Electron

Nanoparticle-stacked 1,1-diamino-2,2-dinitroethylene (FOX-7) microspheres were successfully prepared by spray-drying, and rod-shaped FOX-7 was obtained by the solvent/nonsolvent method for comparison. The microstructure features of samples were characterized using scanning electron microscopy (SEM) and powder X-ray diffraction (XRD), and the thermal properties were also investigated by differential scanning calorimetry (DSC). From the SEM analysis, the particle size of the rod-shaped FOX-7 is about 10 μm, whereas FOX-7 microspheres having a particle size ranging from 1 to 5 μm are formed by stacking nanoparticles with size of 100-250 nm. The crystal form of the samples prepared by the two methods did not change. The thermal performance test results showed that the rd-shaped FOX-7 had no significant change compared with the raw FOX-7, while the nanoparticle-stacked FOX-7 microspheres had higher thermal stability.

Synthesis of CuO Flower-Nanostructure via the Hydrothermal Method

2013 ◽  
Vol 873 ◽  
pp. 131-134
Author(s):  
Xiao Ming Fu ◽  
Jie Ren
Keyword(s):  
Electron Microscope ◽  
Reaction Time ◽  
Scanning Electron Microscope ◽  
Hydrothermal Method ◽  
Reaction Temperature ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

CuO flower-nanostructures are successfully synthesized with CuCl2 as copper source and Na2CO3 as auxiliary salt at 180 °C for 24 h via the simple hydrothermal method. The phase and the morphologies of the samples have been characterized and analyzed by XRD (X-ray diffraction) and SEM (Scanning electron microscope), respectively. XRD analysis shows that the phase of as obtained samples is CuO. SEM analysis confirms that the increase of the reaction temperature is propitious to synthesize CuO flower-nanostructures while the increase of the reaction time is not in favor of their synthesis. The influence of the increase of the auxiliary salt on the morphology of CuO flower-nanostructures is not remarkable. The mechanism of the formation of CuO flower-nanostructure is discussed.

The Influence of the Hydrothermal Temperature on the Morphologies of β-Ni(OH)2 Nanospheres and Nanoflakes

2012 ◽  
Vol 159 ◽  
pp. 376-379 ◽  
Author(s):  
Xiao Ming Fu
Keyword(s):  
Electron Microscope ◽  
High Temperature ◽  
Scanning Electron Microscope ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
Hydrothermal Temperature ◽  
X Ray ◽  
Low Reaction Temperature ◽  
Scanning Electron

β-Ni(OH)2 nanospheres and nanoflakes have been successfully synthesized with nickel nitrate as nickel source and stronger ammonia water as precipitant via the hydrothermal method. The phase and the morphologies of the samples have been characterized and analyzed by XRD (X-ray diffraction) and SEM (Scanning electron microscope), respectively. XRD analysis shows that the phase of the samples is β-Ni(OH)2. SEM analysis confirms that the low reaction temperature is propitious to the synthesis of β-Ni(OH)2 nanospheres. However, The high temperature is in favor of the synthesis of β-Ni(OH)2 nanosflakes.

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

Arena Tekstil ◽  
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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