Mo-doped, Cr-Doped, and Mo–Cr codoped TiO2 thin-film photocatalysts by comparative sol-gel spin coating and ion implantation

Background: Improper storage and raw materials make peanut oil susceptible to Aflatoxin B1 (AFB1). The semiconductor TiO2 photocatalysis technology is an effective technology which is widely used in sewage treatment, environmental protection and so on. Moreover, the photocatalytic efficiency can be improved by doping I. Method: The experiment is divided into two parts. In the first part, supported TiO2 thin film (STF) was prepared on the quartz glass tube (QGT) by the sol-gel and calcination method and the supported iodine doped supported TiO2 thin film (I-STF) was synthesized using potassium iodate solution. In the second part, the photocatalytic degradation of AFB1 was performed in a self-made photocatalytic reactor. The AFB1 was detected by ELISA kit. Results: The photocatalytic degradation of AFB1 has been proven to follow pseudo first-order reaction kinetics well (R2 > 0.95). The maximum degradation rate of 81.96%, which was reached at the optimum iodine concentration of 0.1mol/L, was 11.38% higher than that with undoped STF. The doping of iodine reduces the band-gap of TiO2, thereby increasing the photocatalytic response range. The proportion of Ti4+ in I-STF has decreased, which means that Ti4+ are replaced by I. The I-STF prepared at iodine concentration of 0.1mol/L has good photocatalytic properties.

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Fabrication of thin film sensors by spin coating using sol-gel LaCrO3 Perovskite material modified with transition metals for sensing environmental pollutants, greenhouse gases and relative humidity

Environmental Challenges ◽

10.1016/j.envc.2021.100043 ◽

2021 ◽

Vol 3 ◽

pp. 100043

Author(s):

Prashant Bhimrao Koli ◽

Kailas Haribhau Kapadnis ◽

Uday Gangadhar Deshpande ◽

Umesh Jagannath Tupe ◽

Sachin Girdhar Shinde ◽

...

Keyword(s):

Thin Film ◽

Relative Humidity ◽

Transition Metals ◽

Greenhouse Gases ◽

Spin Coating ◽

Sol Gel ◽

Environmental Pollutants ◽

Thin Film Sensors ◽

Perovskite Material

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An investigation of sol–gel spin coating growth of wurtzite GaN thin film on 6H–SiC substrate

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2014.12.011 ◽

2015 ◽

Vol 413 ◽

pp. 1-4 ◽

Cited By ~ 12

Author(s):

C.Y. Fong ◽

S.S. Ng ◽

F.K. Yam ◽

H. Abu Hassan ◽

Z. Hassan

Keyword(s):

Thin Film ◽

Spin Coating ◽

Sol Gel ◽

Coating Growth

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Preparation of Glass Plate-Supported Nanostructure ZnO Thin Film Deposited by Sol-Gel Spin-Coating Technique and Its Photocatalytic Degradation to Monoazo Textile Dye

Journal of Nanomaterials ◽

10.1155/2008/356765 ◽

2008 ◽

Vol 2008 ◽

pp. 1-5 ◽

Cited By ~ 18

Author(s):

Mohammad Hossein Habibi ◽

Mohammad Khaledi Sardashti

Keyword(s):

Thin Film ◽

Thin Films ◽

Photocatalytic Degradation ◽

Spin Coating ◽

Sol Gel ◽

Glass Plate ◽

Zno Thin Films ◽

Visible Range ◽

Textile Dye ◽

Axis Orientation

Glass plate-supported nanostructure ZnO thin films were deposited by sol-gel spin coating. Films were preheated at275∘Cfor 10 minutes and annealed at 350, 450, and550∘Cfor 80 minutes. The ZnO thin films were transparent ca 80–90% in visible range and revealed that absorption edges at about 370 nm. Thec-axis orientation improves and the grain size increases which was indicated by an increase in intensity of the (002) peak at34.4∘in XRD corresponding to the hexagonal ZnO crystal. The photocatalytic degradation of X6G an anionic monoazo dye, in aqueous solutions, was investigated and the effects of some operational parameters such as the number of layer and reusability of ZnO nanostructure thin film were examined. The results showed that the five-layer coated glass surfaces have a very high photocatalytic performance.

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Microstructure Evolution of Ag/TiO2 Thin Film

Magnetochemistry ◽

10.3390/magnetochemistry7010014 ◽

2021 ◽

Vol 7 (1) ◽

pp. 14

Author(s):

Dewi Suriyani Che Halin ◽

Kamrosni Abdul Razak ◽

Mohd Arif Anuar Mohd Salleh ◽

Mohd Izrul Izwan Ramli ◽

Mohd Mustafa Al Bakri Abdullah ◽

...

Keyword(s):

Thin Film ◽

Thin Films ◽

Growth Rate ◽

Synchrotron Radiation ◽

Tio2 Thin Film ◽

Sol Gel ◽

Tio2 Thin Films ◽

Contact Mode ◽

X Ray ◽

Radiation Imaging

Ag/TiO2 thin films were prepared using the sol-gel spin coating method. The microstructural growth behaviors of the prepared Ag/TiO2 thin films were elucidated using real-time synchrotron radiation imaging, its structure was determined using grazing incidence X-ray diffraction (GIXRD), its morphology was imaged using the field emission scanning electron microscopy (FESEM), and its surface topography was examined using the atomic force microscope (AFM) in contact mode. The cubical shape was detected and identified as Ag, while the anatase, TiO2 thin film resembled a porous ring-like structure. It was found that each ring that coalesced and formed channels occurred at a low annealing temperature of 280 °C. The energy dispersive X-ray (EDX) result revealed a small amount of Ag presence in the Ag/TiO2 thin films. From the in-situ synchrotron radiation imaging, it was observed that as the annealing time increased, the growth of Ag/TiO2 also increased in terms of area and the number of junctions. The growth rate of Ag/TiO2 at 600 s was 47.26 µm2/s, and after 1200 s it decreased to 11.50 µm2/s and 11.55 µm2/s at 1800 s. Prolonged annealing will further decrease the growth rate to 5.94 µm2/s, 4.12 µm2/s and 4.86 µm2/s at 2400 s, 3000 s and 3600 s, respectively.

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Effect of Spin-Coating Cycle on the Properties of TiO2 Thin Film and Performance of DSSC

International Journal of Electrochemical Science ◽

10.20964/2017.06.57 ◽

2017 ◽

pp. 5529-5538 ◽

Cited By ~ 2

Author(s):

S N. Sadikin ◽

Keyword(s):

Thin Film ◽

Spin Coating ◽

Tio2 Thin Film ◽

And Performance

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Synthesis and Characterizations of Strontium Substituted Hydroxyapatite Thin Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.93-94.231 ◽

2010 ◽

Vol 93-94 ◽

pp. 231-234

Author(s):

B. Hongthong ◽

Satreerat K. Hodak ◽

Sukkaneste Tungasmita

Keyword(s):

Thin Film ◽

Thin Films ◽

Chemical Composition ◽

Spin Coating ◽

Phase Structure ◽

Sol Gel ◽

Cross Linking ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process

Strontium substituted hydroxyapatite(SrHAp) were fabricated both in the form of powder as reference and thin film by using inorganic precursor reaction. The sol-gel process has been used for the deposition of SrHAp layer on stainless steal 316L substrate by spin coating technique, after that the films were annealed in air at various temperatures. The chemical composition of SrHAp is represented (SrxCa1-x)5(PO4)3OH, where x is equal to 0, 0.5 and 1.0. Investigations of the phase structure of SrHAp were carried out by using X-ray diffraction technique (XRD). The results showed that strontium is incorporated into hydroxyapatite where its substitution for calcium increases in the lattice parameters, and Sr3(PO4)2 can be detected at 900°C. The SEM micrographs showed that SrHAp films exhibited porous structure before develop to a cross-linking structure.

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