scholarly journals Tuning Deposition of Magnetic Metallic Nanoparticles from Periodic Pattern to Thin Film Entrainment by Dip Coating Method

Langmuir ◽  
2014 ◽  
Vol 30 (30) ◽  
pp. 9028-9035 ◽  
Author(s):  
J. Dugay ◽  
R. P. Tan ◽  
A. Loubat ◽  
L.-M. Lacroix ◽  
J. Carrey ◽  
...  
Keyword(s):  
Thin Film ◽  
Metallic Nanoparticles ◽  
Dip Coating ◽  
Periodic Pattern ◽  
Coating Method ◽  
Dip Coating Method

Synthesis of WO3 Electrochromic Sensor by Sol-Gel Method and Characterization of Its Electrochemical and Optical Properties

2006 ◽  
Vol 317-318 ◽  
pp. 807-810 ◽  
Author(s):  
Chang Yeoul Kim ◽  
Jin Wook Choi ◽  
Tae Yeoung Lim ◽  
Duck Kyun Choi
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Dip Coating ◽  
Xrd Pattern ◽  
Starting Solution ◽  
Oxide Crystal ◽  
Heat Treated ◽  
Coating Method ◽  
Dip Coating Method

Electrochromic WO3 thin film was prepared by using tungsten metal solution in hydrogen peroxide as a starting solution and by sol-gel dip coating method. XRD pattern showed that tungsten oxide crystal phase formed at 400. In the view of electrochemical property, WO3 thin film which was heat-treated at 300 and was amorphous had better than that of the crystalline phase.

Effect of ZnO on a Superhydrophilic Self-Cleaning Properties of TiO2/SiO2 Thin Film on Glass Slide Substrate

2015 ◽  
Vol 1131 ◽  
pp. 237-241 ◽  
Author(s):  
Akkarat Wongkaew ◽  
Chanida Soontornkallapaki ◽  
Naritsara Amhae ◽  
Wichet Lamai
Keyword(s):  
Thin Film ◽  
Contact Angle ◽  
Visible Light ◽  
Band Gap ◽  
Sol Gel ◽  
Dip Coating ◽  
Band Gap Energy ◽  
Gap Energy ◽  
Coating Method ◽  
Dip Coating Method

This work aims to study the effect of ZnO containing in TiO2/SiO2 film on the superhydrophilic property after exposed to different types of light. The metal solutions were prepared by sol-gel technique and the film was deposited on glass slides by dip coating method. The parameter studied was the amount of ZnO in the TiO2/SiO2 film. The contents of ZnO were 5-20% weight (increased by 5%). The amount of TiO2 was constant at 30% weight. The obtained films were analyzed for their roughness. The results indicated that film roughness changed according to the ZnO contents. With 5%ZnO in the thin film, the roughness was 0.726 nm while 20%ZnO obtained the roughness of 2.128 nm. UV-Vis spectrophotometer was used for measuring of transmittance of films. At wavelength of 550 nm, the transmittances of each film were greater than 90%. Band gap energy of each film was calculated from the transmittance data. It was found that the average band gap energy of the films was 2.47 eV. Then, the films contained various amount of ZnO were grouped into 2 sets. The first set was exposed to visible light while the other set was exposed to UV. The duration of exposure was 5 hr. Both sets of films after exposed to any light were kept in a black box controlled relative humidity of 85%. Each film was measured contact angle every day. It was found that the 30%TiO2/5%Zn/SiO2 film exposed to visible light showed the best superhydrophilic property. The contact angle was about 0-5° within 3 days. This may due to the reduction of band gap energy in the presence of ZnO in TiO2/SiO2 films to 2.41 eV and the roughness of the film.

Preparation and Characterization of ZnO Thin Film Doped with Eu via Sol-Gel Method

2007 ◽  
Vol 336-338 ◽  
pp. 585-588 ◽  
Author(s):  
Dao Qi Xue ◽  
Jun Ying Zhang ◽  
Hai Bing Feng ◽  
Tian Min Wang
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Dip Coating ◽  
Luminescence Spectra ◽  
Zno Thin Film ◽  
Excitation Spectra ◽  
Coating Method ◽  
Dip Coating Method

ZnO:Eu3+ films were obtained by dip-coating method and influence of heat treatment on luminescent properties was investigated. Emission and excitation spectra revealed that the organic and nitrate molecules, which adhered on the surface of films when the samples were treated at lower temperatures (300oC-400oC), played an important role on the luminescent properties. At higher temperatures (500oC-800oC), the luminescence spectra of ZnO and Eu3+ were quite different with those treated at lower temperatures. Energy transferred from ZnO host to Eu3+ was obviously observed in the emission and excitation spectra. The luminescence mechanism was discussed briefly.

Electrochemical and Optical Properties of WO3 Prepared by Sol-Gel Coating

2007 ◽  
Vol 544-545 ◽  
pp. 1081-1084 ◽  
Author(s):  
Chang Yeoul Kim ◽  
Seong Geun Cho ◽  
Seok Park ◽  
Tae Yeoung Lim ◽  
Duck Kyun Choi
Keyword(s):  
Thin Film ◽  
Tungsten Oxide ◽  
Active Sites ◽  
Sol Gel ◽  
Dip Coating ◽  
Treatment Temperature ◽  
Starting Solution ◽  
Coating Method ◽  
Dip Coating Method ◽  
Xrd Patterns

Electrochromic WO3 thin film was prepared by using tungsten metal solution in hydrogen peroxide as a starting solution and by a sol-gel dip coating method. The thermal analysis was conducted by DSC/TG method. A DSC/TG analysis and the XRD patterns showed that a tungsten oxide crystal phase was formed at 400oC. WO3 thin film when heat-treated at 300oC was amorphous and had a better electrochemical property than that of the crystalline phase. Crystallization of tungsten oxide decreased active sites of ion intercalation so that the current density decreased with heat-treatment temperature.

scholarly journals Cr–ZnO nanostructured thin film coating on borosilicate glass by cost effective sol–gel dip coating method

2018 ◽  
Vol 9 (4) ◽  
pp. 777-782 ◽  
Author(s):  
Rupeshkumar V. Ramani ◽  
Bharat M. Ramani ◽  
Anjana D. Saparia ◽  
Chirag Savaliya ◽  
K.N. Rathod ◽  
...  
Keyword(s):  
Thin Film ◽  
Borosilicate Glass ◽  
Sol Gel ◽  
Cost Effective ◽  
Film Coating ◽  
Dip Coating ◽  
Thin Film Coating ◽  
Nanostructured Thin Film ◽  
Coating Method ◽  
Dip Coating Method

Multifunctional gold-loaded TiO2 thin film: photocatalyst and recyclable SERS substrate

2013 ◽  
Vol 91 (11) ◽  
pp. 1112-1116 ◽  
Author(s):  
Xiaoqi Fu ◽  
Guolin Zhang ◽  
Tingshuang Wu ◽  
Shuang Wang
Keyword(s):  
Thin Film ◽  
Dip Coating ◽  
High Photocatalytic Activity ◽  
Sers Substrate ◽  
Simple Strategy ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Coating Method ◽  
Dip Coating Method ◽  
Inorganic Molecules

A simple strategy for synthesizing gold-loaded TiO2 thin film (Au/TiO2) for use as multifunctional photocatalyst and recyclable surface-enhanced Raman scattering (SERS) substrate is introduced. Macroporous TiO2 thin film is prepared through the dip-coating method and made the SERS activity by deposition of gold nanoparticles on its surface. Owing to the high photocatalytic activity of TiO2, the substrate can degrade adsorbates into small inorganic molecules under UV irradiation. In this manner, the substrate is able to self-clean and be reused for a new SERS detection cycle. The photodegradation and SERS experimental results show that Au/TiO2 is a good candidate for both photocatalyst and SERS substrate and exhibits high recyclability in the detection of organic pollutants.

Degradasi Gas Benzena Melalui Proses Pemangkinanfoto Saput Tipis TiO2

2012 ◽  
Author(s):  
Wan Azelee Wan Abu Bakar ◽  
Mohd Yusof Othman ◽  
Noor Khaida Wati Mohd Saiyudi ◽  
Keiichi Tanaka
Keyword(s):  
Thin Film ◽  
Light Source ◽  
Tio2 Thin Film ◽  
Uv Light ◽  
Wave Length ◽  
Sol Gel ◽  
Dip Coating ◽  
Optimum Ratio ◽  
Coating Method ◽  
Dip Coating Method

Pengoksidaanfoto benzena fasa gas menggunakan saput tipis TiO2 yang disinari lampu ultralembayung telah dikaji. Saput tipis ini disediakan melalui kaedah celup angkat menggunakan sol–gel TiO2. Tindak balas yang sama juga telah dijalankan menggunakan saput tipis TiO2 yang didop dengan Cu2+ dan Fe3+ dengan nisbah mol TiO2 terhadap ion logam 1:0.005, 1:0.001, 1:0.0005 dan 1:0.0003. Hasil kajian menunjukkan mangkin TiO2 dengan pancaran cahaya UV (354 nm) mendegradasikan gas benzena sebanyak 90% dalam masa 55 minit. Walau bagaimanapun penambahan ion Fe3+ dengan nisbah 1:0.0005 meningkatkan peratusan degradasi benzena kepada 98% dalam masa 55 minit, sebaliknya penambahan Cu2+memberikan kesan negatif kepada aktiviti foto TiO2. Kajian juga memperoleh satu nilai optimum dengan aktiviti pemangkinan adalah tertinggi bagi kedua-dua ion Fe3+ dan Cu2+. Pengaruh panjang gelombang cahaya ke atas aktiviti foto TiO2 juga telah dikaji dengan menggunakan mangkin TiO2 dop Fe3+ dengan nisbah optimum. Hasil kajian menunjukkan bahawa degradasi gas benzena meningkat dengan pengurangan tenaga cahaya yang dipancarkan. Kata kunci: Pemangkinanfoto; pengoksidaanfoto; saput tipis; TiO2 The gas phase photooxidation of benzene was investigated using TiO2 thin film irradiated with UV light source. The thin film was prepared via TiO2 sol gel dip coating method. The same reaction was also carried out using TiO2 doped with Cu2+ and Fe3+ with 1:0.005, 1:0.001, 1:0.0005 and 1:0.0003 mole ratios. The results showed that 90% of benzene was degraded after 55 minutes UV (354 nm) irradiation of the TiO2 thin film. However the addition of Fe3+ ions with 1:0.0005 mole ratio degraded 98% of benzene within 55 minutes. In contrast, Cu2+ ions however give a detrimental effect to the photoactivity of TiO2. An optimum ratio of dopant, where TiO2 showed the highest activity, was determined for both Fe3+ and Cu2+. The effect of different wave-length light source was also carried out using TiO2 doped Fe3+ with optimum ratio. The degradation of benzene was found to increase with decreasing light energy. Key words: Photocatalysis; photooxidation; TiO2 thin film

scholarly journals Wearable piezoresistive strain sensor based on graphene-coated three-dimensional micro-porous PDMS sponge

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Young Jung ◽  
Kyungkuk Jung ◽  
Byunggeon Park ◽  
Jaehyuk Choi ◽  
Donghwan Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Three Dimensional ◽  
Strain Sensor ◽  
Cost Effective ◽  
Dip Coating ◽  
Strain Sensors ◽  
Effective Manner ◽  
Coating Method ◽  
Dip Coating Method ◽  
Sensing Performance

Abstract We present a highly elastic and wearable piezoresistive strain sensor based on three-dimensional, micro-porous graphene-coated polydimethylsiloxane (PDMS) sponge suitable for being attached on human skin. The proposed strain sensors are simply fabricated by a sugar templating process and dip coating method based graphene ink in a facile and cost effective manner. The fabricated graphene-coated PDMS sponge shows highly stable mechanical properties in various tensile stress–strain test. A graphene thin film coated onto the backbone of PDMS sponges is used as the sensing materials of piezoresisitve strain sensors. The changes in resistance of the devices are highly stable, repeatable, and reversible when various strain is applied. Furthermore, the strain sensors show excellent sensing performance under different strain rate and mechanically robustness enough to be worked stably under repeated loads without any degradation.

scholarly journals Electrode Properties of Dye Sensitized Solar Cell Using Ruthenium Complex/Titania Nano Crystal

2006 ◽  
Vol 320 ◽  
pp. 231-234
Author(s):  
Hajime Horikawa ◽  
Takashi Ogihara ◽  
Nobuo Ogata ◽  
Masahiro Asahara ◽  
Xing Zheng Wu
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Ruthenium Complex ◽  
Dip Coating ◽  
Ethanol Solution ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Alumina Thin Film ◽  
Coating Method ◽  
Dip Coating Method

Titania nanocrystals were prepared by hydrolysis of titanium alkoxide in ethanol solution. The preparation of titania / alumina thin film was performed on ITO coated glass substrate by dip coating method using ethanol of titania nanocrystal and boemite sol. The crystal structures, microstructure and thickness of titania / alumina thin film were examined by XRD and SEM. The adsorption of dye was influenced by the surface structure of thin film. The adsorption of dye on the films was improved by the immersion into acid as HNO3. Ruthenium polypyridyl complex and triarylmethylium salt were used as dye. Electrode using titania / alumina thin film for dye-sensitized solar cell was constructed.

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