Surface Modification of Nano-TiO2 Microspheres

2021 ◽  
pp. 593-598
Author(s):  
Mengfei Wang ◽  
Chunxiu Zhang ◽  
Xinyue Zhao ◽  
Chenhui Wei ◽  
Zhengran Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Nano Tio2 ◽  
Tio2 Microspheres

SURFACE MODIFICATION OF NANO TITANIUM DIOXIDE (TiO2) BY CATIONIC SURFACTANTS AND INVESTIGATION OF ITS EFFECT ON THE PROPERTIES OF NATURAL RUBBER (NR) NANOCOMPOSITES

2019 ◽  
Vol 93 (2) ◽  
pp. 346-359
Author(s):  
Kumarjyoti Roy ◽  
Debdas Sikdar ◽  
Swapan Kumar Mandal ◽  
Subhas Chandra Debnath
Keyword(s):  
Titanium Dioxide ◽  
Surface Modification ◽  
Natural Rubber ◽  
Cationic Surfactants ◽  
Mechanical And Thermal Properties ◽  
Tetraethylammonium Bromide ◽  
Nano Tio2 ◽  
Uniform Dispersion ◽  
Surface Modified ◽  
Nano Titanium Dioxide

ABSTRACT We investigate the reinforcing effects of both unmodified and surface modified nano titanium dioxide (TiO2) on the cure, mechanical, and thermal properties of natural rubber (NR) nanocomposites. The surface of nano TiO2 is modified by cationic surfactants cetyltrimethylammonium bromide (CTAB) and tetraethylammonium bromide (TEAB). The surface modification of nano TiO2 is characterized by Fourier transform infrared (FTIR) spectra and Field emission scanning electron microscopy (FESEM). The result reveals that surface modified nano TiO2 is much more efficient in improving the resulting properties of NR nanocomposites in comparison with unmodified nano TiO2. The excellent improvement in the properties of surface modified nano TiO2/NR composites is due to the better hydrophobicity and uniform dispersion of modified nano TiO2 within the NR matrix, as confirmed from morphological analysis. CTAB is much more effective than TEAB with respect to the properties of nano TiO2 based NR composites.

scholarly journals Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 599 ◽  
Author(s):  
Chiara D’Amato ◽  
Rita Giovannetti ◽  
Marco Zannotti ◽  
Elena Rommozzi ◽  
Marco Minicucci ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Surface Modification ◽  
Visible Light ◽  
Band Gap ◽  
Tio2 Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Nano Tio2 ◽  
Alizarin Red ◽  
X Ray ◽  
Visible Light Active

The effect of surface modification using ascorbic acid as a surface modifier of nano-TiO2 heterogeneous photocatalyst was studied. The preparation of supported photocatalyst was made by a specific paste containing ascorbic acid modified TiO2 nanoparticles used to cover Polypropylene as a support material. The obtained heterogeneous photocatalyst was thoroughly characterized (scanning electron microscope (SEM), RAMAN, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), and Diffuse Reflectance Spectra (DRS) and successfully applied in the visible light photodegradation of Alizarin Red S in water solutions. In particular, this new supported TiO2 photocatalyst showed a change in the adsorption mechanism of dye with respect to that of only TiO2 due to the surface properties. In addition, an improvement of photocatalytic performances in the visible light photodegration was obtained, showing a strict correlation between efficiency and energy band gap values, evidencing the favorable surface modification of TiO2 nanoparticles.

Surface modification of light hollow polymer microspheres and its application in external wall thermal insulation coatings

2016 ◽  
Vol 45 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Chao Ye ◽  
Xiufang Wen ◽  
Jia-ling Lan ◽  
Zhi-qi Cai ◽  
Pi-hui Pi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Surface Modification ◽  
Thermal Insulation ◽  
Temperature Difference ◽  
Composite Particles ◽  
Polymer Microspheres ◽  
Coating Film ◽  
Nano Tio2 ◽  
Content Type ◽  
External Wall

Purpose – The purpose of this paper is to modify light hollow polymer microsphere (LHPM) with titanium dioxide nanoparticles (nano-TiO2) to improve its compatibility with latex and apply the obtained nano-TiO2/LHPM composite particles in external wall thermal insulation coatings. Design/methodology/approach – The nano-TiO2/LHPM composite particles were prepared via vigorous stirring. The morphology and chemical composition of the produced nano-TiO2/LHPM composite particles were characterized using scanning electron microscopy, energy dispersion spectrum, thermo-gravimetric analyzer and Fourier transform infrared. The performance of this new composite coating was evaluated by checking its stability, density, radiation reflectivity, thermal conductivity and the resulting insulation temperature difference when forming coating film. Findings – It was found that a 9:1 mass ratio of nano-TiO2/LHPM with total 10 weight per cent composite particles in the thermal insulation paint showed low density, good stability, low thermal conductivity (0.1687 W/m·K) and high insulation temperature difference (5.8°C). Research limitations/implications – The LHPM can be modified by other nanoparticles to improve its insulation performance in thermal insulation coatings. Practical implications – This work provides a simple, robust, but effective approach to produce new thermal insulation coatings with nano-TiO2/LHPM composite particles. Originality/value – This method for surface modification of LHPMs is novel and the modified hollow polymer microspheres could be applied to external wall insulation coatings.

Superhydrophilic surface modification of fabric via coating with nano-TiO2 by UV and alkaline treatment

2014 ◽  
Vol 297 ◽  
pp. 147-152 ◽  
Author(s):  
Mingyu Li ◽  
Tingting Deng ◽  
Shuxian Liu ◽  
Fengxiu Zhang ◽  
Guangxian Zhang
Keyword(s):  
Surface Modification ◽  
Alkaline Treatment ◽  
Nano Tio2 ◽  
Superhydrophilic Surface

scholarly journals Surface modification of nano-TiO2 with lanthanide-acetylacetonate complexes

2022 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Pengfei Li ◽  
Fugen Yuan
Keyword(s):  
Surface Modification ◽  
Lanthanide Complexes ◽  
Pure Tio2 ◽  
Adsorption Method ◽  
Nano Tio2 ◽  
Adsorption Time ◽  
Surface Modifier ◽  
Adsorption Temperature ◽  
Element Type ◽  
Suitable Modification

The surface modification of nano-TiO2 was carried out with lanthanide-acetylacetonate complexes by adsorption method. The effects of lanthanide complexes content, lanthanide  element type, adsorption temperature, solvent dosage, adsorption time and other conditions on the photodegradation activity of methyl orange by the modified catalyst were studied, and suitable modification conditions were obtained. The results show that the photocatalytic activity of the modified nano-TiO2 is much higher than that of the unmodified pure TiO2, and the lanthanide-acetylacetonate complexes is an excellent surface modifier.

Surface Modification of Nano-TiO2 by Polyvinyl Pyrrolidone In Situ

2016 ◽  
Vol 46 (8) ◽  
pp. 1250-1253 ◽  
Author(s):  
Jin Zhang ◽  
Chunfeng Chen ◽  
Fang Yin ◽  
Guangwen Duan ◽  
Yunzhi Fu
Keyword(s):  
Surface Modification ◽  
Polyvinyl Pyrrolidone ◽  
Nano Tio2

Surface modification of titanium by nano-TiO2/HA bioceramic coating

2008 ◽  
Vol 255 (2) ◽  
pp. 442-445 ◽  
Author(s):  
G. He ◽  
J. Hu ◽  
S.C. Wei ◽  
J.H. Li ◽  
X.H. Liang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Nano Tio2 ◽  
Modification Of Titanium

Surface modification and characterization of 8-hydroxyquinoline aluminum/nano-TiO2

2016 ◽  
Vol 171 ◽  
pp. 131-137 ◽  
Author(s):  
Xi Li ◽  
Jie Li ◽  
Yingchun Li ◽  
Kai Xia
Keyword(s):  
Surface Modification ◽  
Nano Tio2

scholarly journals Making Marble Powder Waste Profitable by Using Nano-TiO2 Surface Modification for Air Quality Improvement Applications

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Yaxiong Ji ◽  
Xing Rong ◽  
Hong Zhong ◽  
Yuanhao Wang ◽  
Shifeng Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Quality Improvement ◽  
Air Quality ◽  
Low Cost ◽  
Anatase Phase ◽  
Nano Tio2 ◽  
Coating Materials ◽  
Air Quality Improvement ◽  
Marble Powder ◽  
High Degradation Rate

We report a brand new recycling route of waste marble powder, by means of surface modification with homemade nano-TiO2 particles to produce low cost coating materials for the application in air quality improvement. The as-prepared nano-TiO2 in anatase phase exhibits excellent photocatalytic characteristic, reflected by the high degradation rate of over 95% of methylene blue within 6 hours of UV irradiation. The prepared coating consisting of nano-TiO2 clad marble powder was tested by monitoring the decomposition rate of formaldehyde gas. A high degradation efficiency of about 95% within 9 hours of illumination is achieved, demonstrating a promising potential for removing the harmful and toxic organic pollutants in air while applying this coating in buildings both interiorly and exteriorly.

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