scholarly journals Application of TiO2 Nanoparticles in Clay Roofing Tiles as a Photocatalytic Active Material

2022 ◽  
Vol 5 (1) ◽  
pp. 90
Author(s):  
Maria Kouroutzi ◽  
Antonios Stratidakis ◽  
Marianthi Kermenidou ◽  
Spyros Karakitsios ◽  
Dimosthenis Sarigiannis
Keyword(s):  
Tio2 Nanoparticles ◽  
Active Material ◽  
Dip Coating ◽  
Morphological Characterization ◽  
Distribution Analysis ◽  
Tio2 Anatase ◽  
Surface Areas ◽  
Coating Procedure ◽  
Sem Imaging

A novel roofing tile was developed containing various types of nanoparticles of titanium dioxide (TiO2). Experiments were conducted using three types of TiO2 nanoparticles with and without polyethylene glycol (PEG). All types of newly developed nanomaterials were characterized using X-ray diffractometry. Particle size distribution analysis was performed and specific surface area was determined using the Brunauer–Emmet–Teller method. SEM imaging was used for the morphological characterization of nanoparticles. Commercial ceramic roofing tiles underwent a dip-coating procedure to obtain the desired photocatalytic surface. The TiO2 anatase samples exhibited greater surface areas of nanoparticles, thus providing potentially the highest photocatalytic efficiency.

Morphological Characterization of Shape-Controlled TiO2 Anatase through XRPD Analysis

2016 ◽  
Vol 230 (9) ◽  
Author(s):  
Mauro Coduri ◽  
Michela Maisano ◽  
Maria Vittoria Dozzi ◽  
Elena Selli
Keyword(s):  
Morphological Characterization ◽  
Morphological Investigation ◽  
X Ray Diffraction ◽  
Preferential Growth ◽  
Rietveld Refinements ◽  
X Ray ◽  
Tio2 Anatase ◽  
Shape Controlled ◽  
Scherrer Equation

AbstractPreferential growth of anatase crystallites along different directions is known to deeply affect their photocatalytic properties, especially with respect to the exposure of the reactive {001} facets. Its extent can be easily quantified through simple geometric calculations, on the basis of crystal sizes extracted for specific directions by means of X-Ray Diffraction data analysis. Nevertheless, the actual results depend on the method employed for such a quantification. Here we report on a comparative morphological investigation, performed by employing the Scherrer equation and the line profile from Rietveld refinements, on shape-controlled anatase photocatalysts produced by employing HF as capping agent. Compared to the Rietveld-based method, the use of the Scherrer equation produces a systematic underestimation of crystallite dimensions, especially concerning the [100] direction, which in turn causes the percentage of exposed {001} crystal facets to be underestimated. Neglecting instrumental-related effects may further reduce the estimate.

Structural and morphological characterization of anatase TiO2 coating on χ-Alumina scale fiber fabricated by sol–gel dip-coating method

2004 ◽  
Vol 271 (1-2) ◽  
pp. 245-251 ◽  
Author(s):  
Hue Thi Nguyen ◽  
Lei Miao ◽  
Sakae Tanemura ◽  
Masaki Tanemura ◽  
Shoichi Toh ◽  
...  
Keyword(s):  
Sol Gel ◽  
Alumina Scale ◽  
Dip Coating ◽  
Morphological Characterization ◽  
Anatase Tio2 ◽  
Tio2 Coating ◽  
Coating Method ◽  
Dip Coating Method

scholarly journals Surfactant Templated Mesoporous Hybrid Thin Films

2000 ◽  
Vol 628 ◽  
Author(s):  
Hongyou Fan ◽  
Yunfeng Lu ◽  
Roger A. Assink ◽  
Gabriel P. Lopez ◽  
C. Jeffrey Brinker
Keyword(s):  
Thin Film ◽  
Self Assembly ◽  
High Surface ◽  
Homogeneous Solution ◽  
Dip Coating ◽  
Inorganic Hybrid ◽  
Surface Areas ◽  
Hybrid Silica ◽  
Hybrid Thin Films ◽  
Coating Procedure

ABSTRACTOrganic/inorganic hybrid mesoporous films exhibiting ordered mesophases were prepared by a simple dip-coating procedure. Beginning with a homogeneous solution of tetraethoxysilane, organoalkoxysilane ((R'Si(OR)3, R' is a non-hydrolyzable functional ligand) surfactant, we relied on solvent evaporation to induce micellization and continuous self-assembly into hybrid silica-surfactant thin film mesophases. Surface acoustic wave (SAW)-based nitrogen sorption measurements indicate that the films have high surface areas and unimodal pore diameters after removal of surfactants.

Hydrolytic Degradation and Morphological Characterization of Electrospun Poly(glycolic acid) [PGA] Thin Films of Different Molecular Weights Containing TiO2 Nanoparticles

2016 ◽  
Vol 23 (6) ◽  
Author(s):  
Laura Ivone Silva de la Cruz ◽  
Francisco Javier Medellín Rodríguez ◽  
Carlos Velasco-Santos ◽  
Ana Martínez-Hernández ◽  
Mariana Gutiérrez-Sánchez
Keyword(s):  
Thin Films ◽  
Tio2 Nanoparticles ◽  
Glycolic Acid ◽  
Hydrolytic Degradation ◽  
Morphological Characterization ◽  
Molecular Weights

Morphological characterization of A12O3 membrane fabricated by sol-gel dip-coating method

2006 ◽  
Vol 10 (6) ◽  
pp. 553-557
Author(s):  
Zhan-feng Xu ◽  
Liang-miao Zhang ◽  
Nian-yi Chen ◽  
Wen-cong Lu ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Dip Coating ◽  
Morphological Characterization ◽  
Coating Method ◽  
Dip Coating Method

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

Morphological Characterization of Rhinacanthus Species of Sri Lanka

Planta Medica ◽  
2010 ◽  
Vol 76 (05) ◽  
Author(s):  
APPR Amarasinghe ◽  
RP Karunagoda ◽  
DSA Wijesundara
Keyword(s):  
Sri Lanka ◽  
Morphological Characterization

Density and morphological characterization of bacteria in integrated and exclusive production systems

2020 ◽  
Vol 13 (11) ◽  
pp. 1
Author(s):  
A. R. B. Zanco ◽  
A. Ferreira ◽  
G. C. M. Berber ◽  
E. N. Gonzaga ◽  
D. C. C. Sabino
Keyword(s):  
Bacterial Community ◽  
Rainy Season ◽  
Production Systems ◽  
Cropping System ◽  
Morphological Characterization ◽  
Native Forest ◽  
Exclusive Production ◽  
Colony Forming Units

The different integrated production systems can directly interfere with its bacterial community. The present study aimed to assess density, bacterial diversity and the influence of dry and rainy season in different integrated and an exclusive production system. The fallow and a native forest area was assessed to. Samples were collected in 2012 March and September. The isolation were carried out into Petri dishes containing DYGS medium. The number of colony forming units (CFU) was counted after 48 hours and. The bacterial density ranged between 106 and 107 CFU g-1 soil. The crop system affected the dynamics of the bacterial community only in the rainy season. The rainy season showed greater density of total bacteria when compared to the dry period regardless of the cropping system. The dendrograms with 80 % similarity showed thirteen and fourteen groups in the rainy and dry seasons. Isolates with the capacity to solubilize phosphate in vitro were obtained from all areas in the two seasons, but this feature has been prevalent in bacteria isolated during the rainy season

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