Effect of Concentration TTIP on Size Nano-Powder Titanium Dioxide (TiO2)

2013 ◽  
Vol 832 ◽  
pp. 649-653 ◽  
Author(s):  
A.Z. Zainurul ◽  
M.F. Achoi ◽  
Mohamad Rusop ◽  
Saifollah Abdullah
Keyword(s):  
Particle Size ◽  
Raman Spectroscopy ◽  
Titanium Dioxide ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Sol Gel ◽  
Nano Powder ◽  
Particle Size Analyzer ◽  
Powder Titanium ◽  
Scanning Electron

In this work, titanium Dioxide (TiO2) powder was prepared by sol gel method using Titanium (IV) Isopropoxide (TTIP) as precursor and Ethanol (C2H5OH) as solvent. The sol-gel was heated at temperature 150°C in 1 hour. Titanium Dioxide (TiO2) powder was milled with constant ball to powder ratio (BPR) of 10:1 with speed 600 rpm. Then the sample was characterized using Particle Size Analyzer, Raman Spectroscopy and Scanning Electron Microscope (SEM). Titanium Dioxide (TiO2) powder was prepared with three different concentration of TTIP to the size of Titanium Dioxide (TTIP) powder. Titanium Dioxide (TTIP) powder was milled with ball milling to produce nanopowder of Titanium Dioxide (TiO2).

Effect of Different Abrasives on Chemical Mechanical Polishing for Magnesia Alumina Spinel

2020 ◽  
Vol 866 ◽  
pp. 115-124
Author(s):  
Zhan Kui Wang ◽  
Ming Hua Pang ◽  
Jian Xiu Su ◽  
Jian Guo Yao
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Chemical Mechanical Polishing ◽  
Removal Rate ◽  
Mechanical Polishing ◽  
Key Factors ◽  
Particle Size Analyzer ◽  
Scanning Electron ◽  
Shape And Size

In this paper, a series of chemical mechanical polishing (CMP) experiments for magnesia alumina (Mg-Al) spinel were carried out with different abrasives, and the materials removal rate (MRR) and surface quality was evaluated to explore their different effects. The scanning electron microscope (SEM) and laser particle size analyzer were also employed to test the micro-shape and size distribution of abrasives. Then, the mechanism of different effects with different abrasives was analyzed in CMP for Mg-Al spinel. Those experimental results suggest that different subjecting pressure ratios of abrasives to polishing pad with different abrasive are the key factors leading to difference polishing performances in CMP.

Study on the Phase Composition and Particle Size of Boron Mud

2014 ◽  
Vol 881-883 ◽  
pp. 1568-1571
Author(s):  
Zhi Qiang Ning ◽  
Ling Ling Zhang
Keyword(s):  
Particle Size ◽  
Phase Composition ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
X Ray ◽  
Laser Particle Size Analyzer ◽  
Particle Size Analyzer ◽  
Boron Mud ◽  
Scanning Electron

The phase composition and particle size of the boron mud is investigated by X-ray diffractometry (XRD), scanning electron microscope (SEM) and laser particle size analyzer. The mainly phase composition of the boron mud are magnesite (MgCO3) and forsterite (Mg2SiO4). The mainly phase composition of the calcined boron mud are forsterite (Mg2SiO4) and a small amount magnesia (MgO). the sizes of the boron mud are about 2~6μm and a few of them are bigger and less than 10μm and the particle size of less than 10μm is about 60%.

Mechanism of Macroporous Zirconia Particles Formation Prepared by Hydrothermal Synthesis

2015 ◽  
Vol 1112 ◽  
pp. 538-541 ◽  
Author(s):  
Siti Machmudah ◽  
Okky Putri Prastuti ◽  
Widiyastuti ◽  
Sugeng Winardi ◽  
Wahyudiono ◽  
...  
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Hydrothermal Synthesis ◽  
Scanning Electron Microscope ◽  
Precursor Solution ◽  
Xrd Analysis ◽  
Continuous Reactor ◽  
Particle Size Analyzer ◽  
Analytical Result ◽  
Scanning Electron

The purpose of this work was to investigate the mechanism of macroporous zirconia particles formation by hydrothermal synthesis. Hydrothermal synthesis of zirconia was prepared from precursor solution of Zr(NO3)2 with a concentration of 0.3 M at temperatures of 300 and 200°C carried out in a batch and a continuous reactor, respectively. Hydrothermally synthesized colloid subsequently was mixed with polystyrene template to form macroporous zirconia particles, and then was synthesized hydrothermally for 1 hour at temperature of 150°C and 200°C. Once the synthesis was complete, the particles were then dried at temperature of 60°C for 6 hours. In order to eliminate polystyrene template from the particles, the dried particles were calcined at temperature of 600°C and 900°C for 6 hours. The morphology of particles formed were characterized by scanning electron microscope (SEM) and Particle Size Analyzer (PSA). The analytical result showed that macroporous particles were formed at all experimental condition, and the mechanism of macroporous particles formation could be observed clearly. Based on the XRD analysis, the crystal zirconia consisted of monoclinic and tetragonal phase.

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.

Effect of Kaolin Particle Size Towards Preparation of Kaolin Ceramic Membrane

2021 ◽  
Vol 02 (01) ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
◽  
Norsiah Hami ◽  
Nurul Azita Salleh ◽  
Mohd Riduan Jamalludin ◽  
...  
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Preliminary Data ◽  
Membrane Structure ◽  
Ceramic Membrane ◽  
Low Cost ◽  
Dense Structure ◽  
Scanning Electron

The purpose of this work is to study the effect of kaolin particle size for the preparation of low cost ceramic membrane suspension and ceramic membrane structure. Kaolin particle size is categorized into two categories; i) ≤ 1µm and ii) ≥ 1 µm. The suspension is prepared via stirring technique under 1000 rpm at 60°C. The particle size of kaolin is characterized using field emission scanning electron microscope (FESEM) and the prepared suspension is characterized in term of its viscosity. Results indicate that the particle size gave significant effect to the viscosity of ceramic membrane suspension. Preliminary data showed that kaolin with particle size ≤ 1µm resulted ceramic membrane with dense structure.

Effect of Dip-Coating Cycle on Some Physical Properties of Cu2NiSnS4 Thin Films for Photovoltaic Applications

2021 ◽  
Author(s):  
Ahmed ZITI ◽  
Bouchaib HARTITI ◽  
Amine BELAFHAILI ◽  
Hicham LABRIM ◽  
Salah FADILI ◽  
...  
Keyword(s):  
Thin Films ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Sol Gel ◽  
Dip Coating ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Uv Visible ◽  
The Impact ◽  
Scanning Electron

Abstract Quaternary semiconductor Cu2NiSnS4 thin film was made by the sol-gel method associated to dip-coating technique on ordinary glass substrates. In this paper, we have studied the impact of dip-coating cycle at different cycles: 4, 5 and 6 on the structural, compositional, morphological, optical and electrical characteristics. CNTS thin films have been analyzed by various characterization techniques including: X-ray diffractometer (XRD), Raman measurements, scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDS), UV-visible spectroscopy and four-point probe method. XRD spectra demonstrated the formation of cubic Cu2NiSnS4 with privileged orientation at (111) plane. Crystallite size of cubic CNTS thin films increase with from 6.30 to 9.52 with dip-coating cycle augmented. Raman scattering confirmed the existence of CNTS thin films by Raman vibrational mode positioned at 332 cm− 1. EDS investigations showed near-stoichiometry of CNTS sample deposited at 5 cycles. Scanning electron microscope showed uniform surface morphologies without any crack. UV-visible spectroscopy indicated that the optical absorption values are larger than 104 cm− 1, Estimated band gap energy of CNTS absorber layers decrease from 1.64 to 1.5 eV with dip-coating cycle increased. The electrical conductivity of CNTS thin films increase from 0.19 to 4.16 (Ω cm)-1. These characteristics are suitable for solar cells applications.

Exploring the Parameter Space of Point Spread Function Determination for the Scanning Electron Microscope—Part II: Effect on Image Restoration Quality

2019 ◽  
Vol 25 (05) ◽  
pp. 1183-1194
Author(s):  
Mandy C. Nevins ◽  
Richard K. Hailstone ◽  
Eric Lifshin
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Image Quality ◽  
Scanning Electron Microscope ◽  
Image Restoration ◽  
Point Spread Function ◽  
Background Correction ◽  
Point Spread ◽  
Spread Function ◽  
Scanning Electron

AbstractPoint spread function (PSF) deconvolution is an attractive software-based technique for resolution improvement in the scanning electron microscope (SEM) because it can restore information which has been blurred by challenging operating conditions. In Part 1, we studied a modern PSF determination method for SEM and explored how various parameters affected the method's ability to accurately estimate the PSF. In Part 2, we extend this exploration to PSF deconvolution for image restoration. The parameters include reference particle size, PSF smoothing (K), background correction, and restoration denoising (λ). Image quality was assessed by visual inspection and Fourier analysis. Overall, PSF deconvolution improved image quality. Low λ enhanced image sharpness at the cost of noise, while high λ created smoother restorations with less detail. λ should be chosen to balance feature preservation and denoising based on the application. Reference particle size within ±0.9 nm and K within a reasonable range had little effect on restoration quality. Restorations using background-corrected PSFs had superior quality compared with using no background correction, but if the correction was too high, the PSF was cut off causing blurrier restorations. Future efforts to automatically determine parameters would remove user guesswork, improve this method's consistency, and maximize interpretability of outputs.

scholarly journals Preparation of ultrafine iron phosphate micro-powder from phosphate slag

2018 ◽  
Vol 238 ◽  
pp. 02002
Author(s):  
Fangjing Sun ◽  
Yi Zhang ◽  
Jiawei Zhang ◽  
Xixi Yan ◽  
Xiaoyu Liu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Electron Microscope ◽  
Average Particle Size ◽  
Iron Phosphate ◽  
Average Particle ◽  
X Ray ◽  
Particle Size Analyzer ◽  
Phosphate Slag ◽  
Scanning Electron

In this experiment, ultrafine iron phosphate micro-powder was prepared by hydrothermal method which used phosphate slag as an iron source. The effects of reaction temperature, surfactants type and amount on its particle size were explored. The samples were characterized by using Malvern Laser Particle Size Analyzer (MS2000), X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX).The results showed that at 160 °C, 1 wt%CTAB, monoclinic iron phosphate micro-powder was obtained with an average particle size about 0.4 μm which also has a good dispersion in aqueous solution.

Automation of size fractionation to extract clays and silts

Clay Minerals ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 515-523 ◽  
Author(s):  
Youjun Deng ◽  
M. G. Tenorio Arvide
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Laser Diffraction ◽  
Size Fractionation ◽  
Microscope Examination ◽  
Household Appliance ◽  
Lawn Irrigation ◽  
Sedimentation Time ◽  
Scanning Electron

AbstractThe objective of this study was to build an automated size fractionator to process up to 16 samples at one time. Most parts used in the apparatus are inexpensive items, available from lawn irrigation, household appliance and aquatic pet supply stores. The device can be used to extract different silt and clay fractions by changing sedimentation time. A bentonite, a kaolin and an ironoxide-rich Oxisol were fractionated by this instrument to sequentially extract particles that have sizes equivalent to <2 µm, <5 µm, <10 µm and <20 µm quartz spheres. A laser diffraction particle size analyser revealed size differences in the different fractions and also showed that the silt fractions contained particles having slightly larger sizes than the assumed diameters of spherical quartz. Scanning electron microscope examination suggested that the greater particle size was mainly due to the non-spherical shapes of the particles and a reduced bulk density of the porous aggregates.

Research on the Ultra-Fine Titanium Dioxide Suspension Stability and Fractal

2011 ◽  
Vol 361-363 ◽  
pp. 288-295
Author(s):  
De Wei Chen ◽  
Xiao Ling Ge ◽  
Quen Tin Shi ◽  
Jiu Wang Tian
Keyword(s):  
Titanium Dioxide ◽  
Fractal Dimension ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Sediments ◽  
Suspension Stability ◽  
Matlab Program ◽  
Different Types ◽  
Scanning Electron ◽  
Dioxide Suspension

Using scanning electron microscope, the microscopic pictures of the surface on sediment have been obtained from the sub-micron titanium dioxide suspensions without dispersant or adding different types of dispersants. Deposits of titanium dioxide suspension have been observed and the mechanism of the dispersant has been analyzed. Meanwhile, deposits of titanium dioxide gray distribution figure have been gained by self-compiled Matlab program, which proved that the surface sediments is fractal, and the fractal dimension has been calculated under different conditions. The rules between suspension stability and fractal dimension have been achieved.

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