Mimicking the Formation of Biomineral Composites through Deposition of Calcium Carbonate Thin-Films on Modified Fiber Net Templates

X Ray Diffraction ◽

X Ray ◽

Controlled Deposition ◽

AbstractThin films of calcium carbonate were deposited on the surfaces of synthetic substrates using a simple biomimetic pathway. The Nylon 66 fiber knit pre-adsorbed with acidic polymers was used as a template for the controlled deposition of CaCO3 thin film. The presence of the soluble macromolecules on the fiber knit surface was characterized using ATR-FTIR spectroscopy. The characterization of the mineral films was carried out using scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive Xray scattering (EDX) studies.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.620.12 ◽

2012 ◽

Vol 620 ◽

pp. 12-16 ◽

Cited By ~ 2

Author(s):

Abdul Rashid Jamaludin ◽

Shah Rizal Kasim ◽

Zainal Arifin Ahmad

Keyword(s):

Electron Microscope ◽

Calcium Carbonate ◽

Physical Properties ◽

Crystallization Temperature ◽

Xrd Analysis ◽

Sem Analysis ◽

X Ray Diffraction ◽

X Ray ◽

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.

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

Characterization of Fe Doped AC/TiO2

10.35940/ijitee.k1315.10812s19 ◽

2019 ◽

Vol 8 (12S) ◽

pp. 1146-1147

Keyword(s):

Activated Carbon ◽

Electron Microscope ◽

Anatase Phase ◽

Sol Gel ◽

Sem Analysis ◽

X Ray Diffraction ◽

X Ray ◽

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.

Karakterisasi Membran ZSM-5 yang Disintensis dengan Variasi Jenis dan Ukuran Kasa Penyangga

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.16.1.25406.1-9 ◽

2020 ◽

Vol 16 (1) ◽

pp. 1

Author(s):

Ana Hidayati Mukaromah ◽

Tulus Ariyadi ◽

Inas Hasna Azizah ◽

Mifbakhuddin Mifbakhuddin

Keyword(s):

Fourier Transform ◽

Electron Microscope ◽

Energy Dispersive Spectroscopy ◽

Energy Dispersive ◽

X Ray Diffraction ◽

X Ray ◽

Aisi 316 ◽

Telah dilakukan sintesis dan karakterisasi membran ZSM-5 dengan penyangga kasa jenis 304 ukuran 200 dan 400 mesh dan jenis kasa AISI 316 ukuran 180 mesh. Tujuan penelitian ini adalah mensintesis membran ZSM-5 dengan penyangga kasa jenis 304 ukuran 200 dan 400 mesh dan jenis kasa AISI 316 ukuran 180 mesh dan mengkarakterisasi membran ZSM-5 hasil sintesis. Sintesis membran dilakukan dengan cara melapiskan prekursor ZSM-5 (coating) pada penyangga kasa yang telah diberi perlakuan dan dipanaskan pada suhu 90 °C selama 4 hari. Selanjutnya, membran yang dihasilkan dikarakterisasi engan metoda X-ray diffraction (XRD), scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) dan Fourier-transform infrared (FTIR). Hasil citra SEM-EDS menunjukkan bahwa ukuran membran ZSM-5 yang semakin besar, menghasilkan jumlah lubang atau pori semakin banyak dengan luasan pori yang semakin kecil. Pola difraksi XRD menunjukkan bahwa membran yang dihasilkan mempunyai intensitas tertinggi pada 2 8º dan 23º yang merupakan karakteristik dari ZSM-5. Hasil spektra FTIR menunjukkan adanya serapan pada bilangan gelombang 450 cm-1yang merupakan ciri khas membran ZSM-5.Characterization of ZSM-5 Membranes Synthesized by Variation of Support Types and Sizes. Synthesis and characterization of ZSM-5 membrane were carried out with 304 type 200 and 400 mesh gauze supports and 180 mesh AISI 316 gauze types. The purpose of this study was to synthesize ZSM-5 membrane with 304 type 200 and 400 mesh gauze support and AISI 316 type 180 mesh size 180 mesh and characterize the synthesized ZSM-5 membrane. Membrane synthesis was carried out by coating the pre-treated gauze support with the ZSM-5 precursor and was heated at 90 °C for 4 days. Furthermore, the resulting membrane was characterized by X-ray diffraction (XRD), scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) dan Fourier-transform infrared (FTIR). The SEM-EDX analysis shows that the increasing of ZSM-5 membrane size allowed pores number to increase with smaller pore surface area. The X-ray Diffraction pattern (XRD) shows that the resulting membrane has the highest intensity at 2 of 8º and 23º as the characteristics of ZSM-5. The FTIR spectra results show absorption at wavenumbers 450 cm-1 which is a characteristic of ZSM-5 membranes.

Exploring Hydrothermally Grown Potassium Titanate Fibers by STEM-in-SEM/EDX and XRD

Microscopy and Microanalysis ◽

10.1017/s1431927606060429 ◽

2006 ◽

Vol 12 (4) ◽

pp. 322-326 ◽

Cited By ~ 5

Author(s):

Wilhelm Habicht ◽

Nikolaos Boukis ◽

Günter Franz ◽

Olaf Walter ◽

Eckhard Dinjus

Keyword(s):

Thin Film ◽

Electron Microscope ◽

Tubular Reactor ◽

X Ray Diffraction ◽

X Ray ◽

Potassium Titanate ◽

Aqueous Solvent ◽

Scanning Transmission ◽

During lab-scale experiments on the reforming of methanol by means of water at supercritical conditions (T> 374°C,p> 22.1 MPa), a tubular reactor with a titanium liner was exposed to an aqueous solvent containing methanol (5 wt%) and KHCO3(0.3 wt%). At the end of the run, a fibrous precipitate was found at two positions in the reactor. The material was studied in a field emission scanning electron microscope equipped with an energy dispersive X-ray analysis unit (FESEM/EDX). A thin-film support technique using carbon-filmed TEM grids was applied to perform scanning transmission-type imaging (STEM-in-SEM operation) and transmission current measurements. The analysis of the hydrothermally grown fibers resulted in a potassium titanate species composed of approximately K2TiO3, which has been confirmed by X-ray diffraction (XRD).

Microstructure Characterization of Laser Clad TiVCrAlSi High Entropy Alloy Coating on Ti-6Al-4V Substrate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.154-155.621 ◽

2010 ◽

Vol 154-155 ◽

pp. 621-625 ◽

Cited By ~ 6

Author(s):

Can Huang ◽

Yong Zhong Zhang ◽

Rui Vilar

Keyword(s):

Electron Microscope ◽

Alloy Coating ◽

High Entropy Alloy ◽

X Ray Diffraction ◽

X Ray ◽

High Entropy ◽

Bcc Phase ◽

Due to the promising properties of high entropy alloy, TiVCrAlSi high entropy alloy coating was prepared on Ti-6Al-4V alloy surface by laser cladding. The microstructure and phase analysis of as-cast TiVCrAlSi alloy and laser clad coating were characterized by scanning electron microscope and X-ray diffraction. The results indicate that as-cast TiVCrAlSi alloy is mainly composed of (Ti,V)5Si3 and bcc phase. The laser clad coating is metallurgically bonded to the substrate with few pores and cracks. Laser clad TiVCrAlSi coating is also composed of (Ti,V)5Si3 and bcc phases.

STRUCTURAL AND OPTICAL CHARACTERIZATION OF NANOCRYSTALLINE CuAlS2 CHALCOPYRITE SYNTHESIZED BY POLYOL METHOD IN AUTOCLAVE

International Journal of Modern Physics B ◽

10.1142/s0217979212501792 ◽

2012 ◽

Vol 26 (31) ◽

pp. 1250179 ◽

Cited By ~ 3

Author(s):

Y. VAHIDSHAD ◽

A. IRAJIZAD ◽

R. GHASEMZADEH ◽

S. M. MIRKAZEMI ◽

A. MASOUD

Keyword(s):

Electron Microscope ◽

Polyethylene Glycol ◽

Optical Characterization ◽

Polyol Method ◽

Capping Agent ◽

X Ray Diffraction ◽

X Ray ◽

Chalcopyrite CuAlS 2 nanoparticles were synthesized with polyol method. The solvothermal with autoclave nanoparticles synthesized are investigated. The amount and temperature of reducer, the solvent of salts could be important parameters that were studied. The nanoparticles were synthesized with CuCl , AlCl 3 and thiourea ( SC ( NH 2)2) as precursors, diethylene glycol (( CH 2 CH 2 OH )2 O ) and polyethylene glycol 600 ( HO ( C 2 H 4 O )n H ) as solvent and capping agent respectively, and ammonia ( NH 4 OH ) as reducing agent. The parameters of synthesis were studied by X-Ray diffraction (XRD) for analysis of structure, scanning electron microscope (SEM) for morphology and by ultraviolet–visible (UV–VIS) spectrophotometer for analysis of light structure. The possible formation mechanism is also discussed.

Scanning electron microscope and X-ray diffraction studies of Al-2wt% Li thin films oxidized at different temperatures

Journal of Materials Science Letters ◽

10.1007/bf00722855 ◽

1990 ◽

Vol 9 (1) ◽

pp. 17-18 ◽

Cited By ~ 1

Author(s):

V. Geetha ◽

V. K. Vaidyan

Keyword(s):

Thin Films ◽

Electron Microscope ◽

X Ray Diffraction ◽

X Ray ◽

Different Temperatures ◽

CHARACTERIZATION OF TALC/TiO2 COMPOSITE PARTICLE MATERIAL PREPARED BY MECHANO-CHEMICAL METHOD

Surface Review and Letters ◽

10.1142/s0218625x2050047x ◽

2020 ◽

pp. 2050047

Author(s):

YU LIANG ◽

WEIHUA AO ◽

HAO DING ◽

KAI SHEN

Keyword(s):

Electron Microscope ◽

Photoelectron Spectroscopy ◽

Chemical Method ◽

Composite Particle ◽

Composite Particles ◽

X Ray Diffraction ◽

X Ray ◽

Talc/TiO2 composite particle was prepared with TiO2 coating on the surfaces of the talc particles by mechano-chemical method. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to investigate the microstructures and morphologies of the composite particles. The mechanism of the mechano-chemical reaction was researched by infrared spectra (IR) and X-ray photoelectron spectroscopy (XPS). The prepared talc/TiO2 composite particle has similar pigment properties compared with TiO2, with its hiding power 10.45[Formula: see text]g/cm3 and whiteness 97.49%. The results show that TiO2 coated evenly on the surfaces of the talc particles by Si–O–Ti and Mg–O–Ti bonds through surface dehydroxylation reaction.

Effect of Substrate Temperature on the Structural and Electrochromic Properties of Mo Doped WO3 Thin Films

Materials Science Forum ◽

10.4028/www.scientific.net/msf.781.95 ◽

2014 ◽

Vol 781 ◽

pp. 95-106 ◽

Cited By ~ 3

Author(s):

V. Madhavi ◽

P. Kondaiah ◽

S. Uthanna

Keyword(s):

Thin Films ◽

Electron Microscope ◽

Substrate Temperature ◽

Electrochromic Property ◽

X Ray Diffraction ◽

X Ray ◽

Electrochromic Properties ◽

Substrate Temperatures ◽

Thin films of Mo (1.3 at.%) doped WO3 films were deposited on glass and ITO coated glass substrates held at substrate temperatures in the range 473 673 K by RF magnetron sputtering technique. The effect of substrate temperature on the structural and morphological, and electrochromic properties of the deposited films were investigated by X-ray diffraction, scanning electron microscope, Raman spectroscope and with electrochemical cell. X-ray diffraction profiles showed that the films formed at substrate temperature of 473 K consisted of weak (020) reflection related to the orthorhombic phase of WO3 in the amorphous matrix. The films formed at substrate temperatures 473 K were of polycrystalline in nature. The crystallite size of the films increased from 12 to 43 nm with increase of substrate temperature from 473 to 673 K. The scanning electron microscope images of the films formed at 473 K showed the leaf like structure with grain size of 1.2 μm. When substrate temperature increased to 573 K the size of the grains enhanced to 2.4 μm. Raman spectra of the films confirmed the presence of characteristic vibration modes of W = O, W - O - W and O - W - O. The optical band gap of the films increased with increase of substrate temperature. The electrochromic property, that is the color efficiency increased from 42.5 to 50.5 cm2/C with the increase of substrate temperature from 473 to 673 K respectively. The structural and electrochromic properties of the Mo doped WO3 films will be correlated with the substrate temperature maintained during growth of the films.

Uji Efektivitas dan Karakterisasi Komposit Tanah Andisol/Arang Tempurung Kelapa Untuk Adsorpsi Logam Berat Besi (Fe)

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.16.1.33286.50-66 ◽

2020 ◽

Vol 16 (1) ◽

pp. 50

Author(s):

Pranoto Pranoto ◽

Tri Martini ◽

Winda Maharditya

Keyword(s):

Fourier Transform ◽

Electron Microscope ◽

Atomic Absorption Spectroscopy ◽

Contact Time ◽

Coconut Shell ◽

X Ray Diffraction ◽

X Ray ◽

Penelitian ini untuk mengetahui kapasitas adsorpsi komposit tanah andisol/arang tempurung kelapa sebagai adsorben logam berat besi (Fe) berdasarkan pada kondisi komposisi, pH dan waktu kontak yang optimum. Tanah andisol diaktivasi dengan larutan NaOH 3 M dan arang tempurung kelapa diaktivasi menggunakan larutan HCl 4 M. Komposit tanah andisol/arang tempurung kelapa dibuat dengan mencampurkan tanah andisol dan arang tempurung kelapa pada variasi komposisi 100:0, 75:25, 50:50, 25:75 dan 0:100 (b/b) Uji adsorpsi terhadap logam besi (Fe) dilakukan pada variasi pH larutan 1, 2, 3, 4, 5 dan 6 serta waktu kontak 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, dan 60 menit dengan sistem batch. Pengukuran konsentrasi akhir pada saat kesetimbangan dilakukan dengan menggunakan Atomic Absorption Spectroscopy (AAS). Hasil karakterisasi adanya proses aktivasi dan pengompositan ditunjukkan pada spektra Fourier Transform Infra Red (FTIR) yang mengalami pergeseran bilangan gelombang. Karakterisasi pola difraksi X-Ray Diffraction (XRD) yang menunjukkan adanya puncak baru. Hasil analisis Scanning Electron Microscope (SEM) komposit menunjukkan bahwa permukaan adsorben telah ditutupi logam besi (Fe). Pembentukan komposit juga menunjukkan adanya peningkatan luas permukaan dan nilai keasaman komposit. Berdasarkan penelitian ini diperoleh bahwa proses adsorpsi terjadi pada kondisi optimum komposisi komposit tanah andisol/arang tempurung kelapa 75:25 (b/b), pH larutan besi (Fe) 5 dan waktu kontak selama 30 menit dengan kapasitas adsorpsi sebesar 0,54 mg/g dan presentase adsorpsi 91,57%. Isoterm adsorpsi mengikuti isoterm Freundlich dengan nilai R2 sebesar 0,9456.Effectiveness Test and Characterization of Andisol Soil/Coconut Shell Charcoal for Adsorption of Iron (Fe). This research aims to determine the adsorption capacity composite of andisol soil and coconut shell charcoal as the adsorbent of iron (Fe) metal based on the composition condition, pH, and optimum contact time. Andisol soil was activated with NaOH 3 M solution, and coconut shell charcoal was activated with HCl 4 M solution. The composites were made under various composition of andisol soil/coconut shell charcoal of 100:0, 75:25, 50:50, 25:75 and 0:100 (w/w). The adsorption test was done on the pH variation of 1, 2, 3, 4, 5, 6 and used the contact time variation of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 and 60 minutes in a batch method. The concentration analysis of iron (Fe) metal was done by atomic absorption spectroscopy (AAS). The characterization result of the activation process can be shown on the Fourier transform infrared (FTIR) spectra with the shifting peak. Characterization of X-ray diffraction (XRD) diffractogram showed the emergence of a new peak in andisol soil and coconut shell charcoal. The result of scanning electron microscope (SEM) characterization analysis showed that the surface of the adsorbent was covered in iron. The composite formation also showed an increase in surface area and composite acidity value. Based on the result of the research, it can be concluded that the adsorption process happens in the optimum condition in andisol soil/coconut shell charcoal composition of 75:25 (w/w), pH solution iron (Fe) metal of 5 and contact time of 30 minutes. The adsorption capacity was 0.54 mg/g and 91.57% for adsorption percentage. The isotherm adsorption followed Freundlich isotherm with R2 values 0.9456.