Incorporation of a Z-scheme AgI/Ag6Si2O7 heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Wang, Lili; Chen, Lei; Tang, Mengyao; Jiang, Shoujie; Gao, Dawei

doi:10.1039/d2nj04168e

Cited by 3 publications

(2 citation statements)

References 50 publications

(60 reference statements)

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“…EIS was performed to monitor the ability of photocatalysts to convert incident photons into charge carriers and transfer rate. The composite with the smaller arc radius in the EIS plots and smaller EIS reflection had lower movement resistance and thus are considered beneficial for redox processes [37]. Figure Meanwhile, the cycle photocatalytic degradation performance of Ag 6 Si 2 O 7 /Ag 2 WO 4 was studied.…”

Section: Electrochemical and Band Position Analysismentioning

confidence: 99%

“…EIS was performed to monitor the ability of photocatalysts to convert incident photons into charge carriers and transfer rate. The composite with the smaller arc radius in the EIS plots and smaller EIS reflection had lower movement resistance and thus are considered beneficial for redox processes [37]. Figure 6a clearly shows that AgSW-4 possessed much lower impedance than the pure Ag 2 WO 4 or Ag 6 Si 2 O 7 samples, with an improved ability to convert incident photons into electron-hole pairs.…”

Section: Electrochemical and Band Position Analysismentioning

confidence: 99%

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Enhanced Photocatalytic Activities of Ag2WO4 Modified Ag6Si2O7 through a Comprehensive p-n Heterojunction S-Scheme Process

Shah

Ping

et al. 2023

Crystals

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The S-scheme photocatalyst system has become increasingly popular in recent years for its ability to efficiently degrade various pollutants, including organic dyes, pesticides, and other harmful substances. This system uses two semiconductor photocatalysts with different bandgap energies, working together in a redox reaction to produce a highly reactive species capable of pollutant breakdown. Here, an S-scheme Ag2WO4/Ag6Si2O7 p-n heterojunction nanocomposite was successfully developed by a coprecipitation method. By decomposing Rhodamine B (RhB) under visible-light irradiation, the photocatalytic activities of Ag6Si2O7/Ag2WO4 showed enhanced photocatalytic degradation performance of organic dyes, especially at a 4% molar ratio of the Ag2WO4-modified Ag6Si2O7 sample, whose degradation rate was 23.7 and 4.65 times those of Ag2WO4 and Ag6Si2O7, respectively. The physical and chemical properties of the samples were determined by identifying the physical structure, chemical element composition, and optical responsiveness. The optimum composite amongst the prepared materials was AgSW-4, achieving the maximum RhB degradation efficiency of 97.5%, which was higher by 60% and 20% than its counterparts Ag6Si2O7 and Ag2WO4, respectively. These results showed that in the nanocomposite structure, Ag6Si2O7 was a p-type semiconductor and Ag2WO4 was an n-type semiconductor. Based on the analysis data, a comprehensive p-n heterojunction S-scheme process was proposed to demonstrate the enhanced photocatalytic performance of the Ag6Si2O7/Ag2WO4 nanocomposite.

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Section: Electrochemical and Band Position Analysismentioning

confidence: 99%

“…EIS was performed to monitor the ability of photocatalysts to convert incident photons into charge carriers and transfer rate. The composite with the smaller arc radius in the EIS plots and smaller EIS reflection had lower movement resistance and thus are considered beneficial for redox processes [37]. Figure 6a clearly shows that AgSW-4 possessed much lower impedance than the pure Ag 2 WO 4 or Ag 6 Si 2 O 7 samples, with an improved ability to convert incident photons into electron-hole pairs.…”

Section: Electrochemical and Band Position Analysismentioning

confidence: 99%

Enhanced Photocatalytic Activities of Ag2WO4 Modified Ag6Si2O7 through a Comprehensive p-n Heterojunction S-Scheme Process

Shah

Ping

et al. 2023

Crystals

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Z-scheme Bi2SiO5/Ni-doped Ag6Si2O7 heterojunction with remarkable photocatalytic performance for MO degradation with enhanced light absorption ability: Adjustment of electron transfer path and energy band structure

Chen,

Xie,

et al. 2024

Applied Surface Science

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Fabrication of unconventional S-scheme NiAl LDH/Ag6Si2O7 heterojunction photocatalysts: outstanding photocatalytic performance and photocatalytic mechanism for tetracycline degradation

Zhu

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Incorporation of a Z-scheme AgI/Ag₆Si₂O₇ heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation

Abstract: A novel AgI/Ag6Si2O7/PET Z-scheme heterojunction photocatalyst with strong redox capability was fabricated via a facile successive ionic layer adsorption and reaction (SILAR) method to degrade methyl orange (MO). Compared with...

Cited by 3 publications

References 50 publications

Enhanced Photocatalytic Activities of Ag2WO4 Modified Ag6Si2O7 through a Comprehensive p-n Heterojunction S-Scheme Process

Enhanced Photocatalytic Activities of Ag2WO4 Modified Ag6Si2O7 through a Comprehensive p-n Heterojunction S-Scheme Process

Z-scheme Bi2SiO5/Ni-doped Ag6Si2O7 heterojunction with remarkable photocatalytic performance for MO degradation with enhanced light absorption ability: Adjustment of electron transfer path and energy band structure

Fabrication of unconventional S-scheme NiAl LDH/Ag6Si2O7 heterojunction photocatalysts: outstanding photocatalytic performance and photocatalytic mechanism for tetracycline degradation

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