Synthesis and photocatalytic performance of Bi2O3 thin films obtained in a homemade spin coater

Falsetti, Paulo H. E.; Soares, Fernando C.; Rodrigues, Gabriel N.; Duque, Douglas M. S. Del; Oliveira, Wlademir R. de; Gianelli, Bruno Fernando; Mendonça, Vagner R. de

doi:10.1016/j.mtcomm.2021.102214

Cited by 8 publications

(7 citation statements)

References 28 publications

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“…For instance, the thin film prepared at 300°C (Sample #13) exhibited low crystallinity with some peaks irrelevant to the mentioned phase (i.e., Bi 2 O 3 ). These peaks might be due to the incomplete decomposition of the used precursors for the preparation of the thin films at low temperature or the formation of Bi 2 SiO 5 (ICDD #00–036‐0287) due to the chemisorption of Bi atoms on the Si‐based glass 1 . Therefore, Sample #13 showed very poor photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

“…These peaks might be due to the incomplete decomposition of the used precursors for the preparation of the thin films at low temperature or the formation of Bi 2 SiO 5 (ICDD #00-036-0287) due to the chemisorption of Bi atoms on the Si-based glass. 1 Therefore, Sample #13 showed very poor photocatalytic activity.…”

Section: Reaction Kineticsmentioning

confidence: 99%

“…Each polymorph of Bi 2 O 3 has specific crystalline structure and physical properties. 1,2 Preparation method of Bi 2 O 3 can be used to tune the Bi 2 O 3 crystalline structure, phase compositions and its properties.…”

Section: Introductionmentioning

confidence: 99%

“…Only two polymorphs are stable; the α ‐polymorph at low temperature and the δ ‐polymorph at high temperature, while the other polymorphs are metastable. Each polymorph of Bi 2 O 3 has specific crystalline structure and physical properties 1,2 . Preparation method of Bi 2 O 3 can be used to tune the Bi 2 O 3 crystalline structure, phase compositions and its properties.…”

Section: Introductionmentioning

confidence: 99%

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Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films

El‐Kalliny

Obaida

Moussa

et al. 2023

Env Prog and Sustain Energy

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To cumbersome separation of the very fine photocatalyst particles from the treated water, uniform, homogenic, and well‐adhered immobilized cobalt‐modified bismuth oxide thin films were deposited on glass substrates using the pulsed spray pyrolysis technique. The parameters of films deposition were optimized using the response surface method (RSM). Three preparation variables, namely, the time of deposition, the temperature, and the Co‐ratio have been studied to investigate their effects on the degradation rate constant of ofloxacin as a response. Furthermore, structural, morphological, and optical properties of the deposited films were measured by X‐ray diffraction, field emission scanning electron microscope, and UV–Visible spectrophotometer, whereas the photocatalytic activities were investigated by degradation of ofloxacin as a model pharmaceutical water pollutant. The experimental results showed a maximum rate constant of ofloxacin degradation of 0.092 , which is in a good agreement with the predictable results obtained from RSM. Therefore, RSM optimized successfully the spraying parameters to have the best film for use in the treatment of water pollutants.

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Section: Resultsmentioning

confidence: 99%

Section: Reaction Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films

El‐Kalliny

Obaida

Moussa

et al. 2023

Env Prog and Sustain Energy

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“…The conventional spin-coating (S-C) technique in which the thin film is grown by spinning the substrate with a solution containing the targeted molecules could be another facile route for the curcumin films. This technique has been extensively used for a wide variety of materials including metal oxides, polymers and even multilayered structures [ 16 , 17 , 18 ]. For bare curcumin films, little efforts have been made to exploit the S-C technique [ 15 ], but Cur-based metal complex films have been deposited using this technique [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Photoactive Thin-Film Structures of Curcumin, TiO2 and ZnO

2021

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Curcumin is known as a biologically active compound and a possible antimicrobial agent. Here, we combine it with TiO2 and ZnO semiconductors, known for their photocatalytic properties, with an eye towards synergistic photo-harvesting and/or antimicrobial effects. We deposit different nanoscale multi-layer structures of curcumin, TiO2 and ZnO, by combining the solution-based spin-coating (S-C) technique and the gas-phase atomic layer deposition (ALD) and molecular layer deposition (MLD) thin-film techniques. As one of the highlights, we demonstrate for these multi-layer structures a red-shift in the absorbance maximum and an expansion of the absorbance edge as far as the longest visible wavelength region, which activates them for the visible light harvesting. The novel fabrication approaches introduced here should be compatible with, e.g., textile substrates, opening up new horizons for novel applications such as new types of protective masks with thin conformal antimicrobial coatings.

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Introduction

Agarwal

Sankapal

2023

Simple Chemical Methods for Thin Film Deposition

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Synthesis and photocatalytic performance of Bi2O3 thin films obtained in a homemade spin coater

Cited by 8 publications

References 28 publications

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films

Photoactive Thin-Film Structures of Curcumin, TiO2 and ZnO

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Synthesis and photocatalytic performance of Bi2O3 thin films obtained in a homemade spin coater

Cited by 8 publications

References 28 publications

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi2O3 photocatalytic thin films

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi2O3 photocatalytic thin films

Photoactive Thin-Film Structures of Curcumin, TiO2 and ZnO

Introduction

Contact Info

Product

Resources

About

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films

Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films