g-C3N4/TiO2 for gas-phase formaldehyde photodegradation under visible light in the humidity control coatings

Zheng, Meng-Wei; Wen, Wan-Yu; Liu, Shou-Heng

doi:10.1016/j.jtice.2023.105129

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…As shown in Figure S11, SEM images before and after the degradation of formaldehyde by the coating were observed and compared, and the overall structure of the coating did not change significantly, indicating that light irradiation did not have a significant effect on the coating (Table S1). Summarizes a number of reports of coatings eliminating formaldehyde, further demonstrating the superior performance of the coating in eliminating formaldehyde. − The formaldehyde degradation experiment was carried out with 0.1 g of pure photocatalyst, and it could be seen from Figure S12 that it has about 85% of the elimination effect, which indicated that the formaldehyde elimination efficiency was improved after preparation into the coating. To summarize, the coatings were effective for the elimination of formaldehyde…”

Section: Resultsmentioning

confidence: 97%

MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

Zhou,

Wang,

et al. 2024

ACS Appl. Nano Mater.

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The development of a green and environmentally friendly photocatalytic multifunctional coating in the field of architectural coatings is crucial. To this end, a simple hydrothermal method was constructed for the growth of MoS 2 in situ on modified MoO 3 , and a photocatalytic coating with full-spectrum elimination of bacterial and formaldehyde, using a waste bioresource of eggshells as a substrate and MoO 3 @MoS 2 as the photocatalyst. The prepared photocatalytic coating has an excellent antibacterial effect on Grampositive bacteria represented by S. aureus and Gram-negative bacteria represented by E. coli and also has significant effectiveness in the elimination of formaldehyde. MoO 3 @MoS 2 generates electron−hole pairs, and the formation of S-heterojunctions demonstrated by in situ XPS under full-spectrum xenon lamp (0.28 W/cm 2 ) irradiation increases the photogenerated electron−hole pair separation and improves the photocatalytic performance of the coating. Combining the photothermal effect and the increased specific surface area of discarded eggshells to enhance adsorption properties, the coating showed almost 99.9% antimicrobial resistance against S. aureus and E. coli within 10 min. At the same time, the elimination rate for high concentrations of formaldehyde is also about 92.5% with 30 min. This photocatalytic coating offers a promising strategy for the secondary use of waste bioresources and green coatings.

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Section: Resultsmentioning

confidence: 97%

MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

Zhou,

Wang,

et al. 2024

ACS Appl. Nano Mater.

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“…While g-C 3 N 4 /TiO 2 photocatalytic powders have been extensively investigated, g-C 3 N 4 /TiO 2 in the form of a coating is still poorly explored. Some reports on solar fuel photocatalytic production [31], water purification [32], and air treatment [33] can be mentioned here. Generally, the increase in the photocatalyst's amount improves the photocatalytic performance of coatings, however, their transmittance and homogeneity decrease [34]; thus, the great challenge remains on how to resolve this problem without compromising the optical and photocatalytic properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Visible Light Photocatalytic Activity of TiO2-Based Coatings by the Addition of Exfoliated g-C3N4

Papailias,

Todorova,

Giannakopoulou

et al. 2024

Catalysts

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In the last few years, increasing interest from researchers and companies has been shown in the development of photocatalytic coatings for air purification and self-cleaning applications. In order to maintain the photocatalyst’s concentration as low as possible, highly active materials and/or combinations of them are required. In this work, novel photocatalytic formulations containing g-C3N4/TiO2 composites were prepared and deposited in the form of coatings on a-block substrates. The obtained photocatalytic surfaces were tested for NOx and acetaldehyde removal from model air. It was found that the addition of only 0.5 wt% g-C3N4 towards TiO2 content results in over 50% increase in the photocatalytic activity under visible light irradiation in comparison to pure TiO2 coating, while the activity under UV light was not affected. The result was related to the creation of a g-C3N4/TiO2 heterojunction that improves the light absorption and the separation of photogenerated electron-hole pairs, as well as to the inhibition of TiO2 particles’ agglomeration due to the presence of g-C3N4 sheets.

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Competent visible light driven photocatalytic removal of gaseous styrene over TiO2/g-C3N4: Characterization, parameters, kinetics, mechanism

Narindri Rara Winayu,

Liu,

Chu

2024

Journal of the Taiwan Institute of Chemical Engineers

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g-C3N4/TiO2 for gas-phase formaldehyde photodegradation under visible light in the humidity control coatings

Cited by 6 publications

References 37 publications

MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

Enhancing the Visible Light Photocatalytic Activity of TiO2-Based Coatings by the Addition of Exfoliated g-C3N4

Competent visible light driven photocatalytic removal of gaseous styrene over TiO2/g-C3N4: Characterization, parameters, kinetics, mechanism

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g-C3N4/TiO2 for gas-phase formaldehyde photodegradation under visible light in the humidity control coatings

Cited by 6 publications

References 37 publications

MoO3 Nanorods Coated with MoS2 Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

MoO3 Nanorods Coated with MoS2 Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

Enhancing the Visible Light Photocatalytic Activity of TiO2-Based Coatings by the Addition of Exfoliated g-C3N4

Competent visible light driven photocatalytic removal of gaseous styrene over TiO2/g-C3N4: Characterization, parameters, kinetics, mechanism

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Product

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MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde

MoO₃ Nanorods Coated with MoS₂ Nanosheets for Photocatalytic Elimination of Bacteria and Formaldehyde