Synthesis and characterization of recyclable PVA/SrTiO3/Ag2O composite with photocatalytic degradation performance of methylene blue

Chen, Xiaofei; Qi, Haojie; Zhang, Chenyang; Ma, Lei; Li, Zaixing; Chen, Ping; Xing, Qinghe; Sun, Qizhen; Ye, Zhibin

doi:10.1007/s00339-022-05510-3

Cited by 9 publications

(2 citation statements)

References 30 publications

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“…The applicability of the composite photocatalyst was evaluated by assessing recyclability and chemical stability of the MnON/RGO(1:3) composite Figure a indicates very negligible drop in the gas evolution rates even after seven treatment cycles.…”

Section: Resultsmentioning

confidence: 99%

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Mohan

Vadivel

Sathya³

et al. 2022

ACS Appl. Energy Mater.

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Photocatalytic water splitting has gained considerable attention owing to the sustainable nature of hydrogen as a clean energy source alternative to fossil fuels. In this study, nanocomposites consisting of manganese oxynitride and reduced graphene oxide were synthesized by the combined involvement of a solvothermal process and Hummer’s method and examined for their photocatalytic applications for water splitting hydrogen production and degradation of norfloxacin as a model pollutant. Spectroscopic and structural analyses showed successful formation of the stable composite in which manganese oxynitride nanoparticles are decorated on graphene sheets. With increasing content of graphene oxide in the composite, it showed the enhanced photocatalytic efficiency in water splitting hydrogen evolution. This is well explained by the large surface area, more light absorption, and interfacial charge transfer in the composite photocatalyst. The hydrogen evolution rates of MnON nanoparticles and MnON/RGO composites of mass ratios 1:1, 1:2, and 1:3 were measured as 250.1, 456.2, 543.6, and 708.5 μmol g–1 min–1, respectively, and the oxygen evolution rates were measured as 129.0, 229.4, 273.4, and 354.6 μmol g–1 min–1, respectively, suggesting the important roles of reduced graphene oxide. The photocatalysts also demonstrated enhanced stability and recyclability after multiple uses.

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Section: Resultsmentioning

confidence: 99%

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Mohan

Vadivel

Sathya³

et al. 2022

ACS Appl. Energy Mater.

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“…A lower PL intensity implies a lower recombination rate of the photogenerated electron-hole pairs. 25,46 The PL intensity of SrTiO 3 and Mn 3 O 4 is lower than that of Mn 3 O 4 /SrTiO 3 , because the heterojunction formed between Mn 3 O 4 /SrTiO 3 can effectively reduce the photogenerated electron-hole pair recombination rate and improve the photogenerated carrier separation efficiency. The lower the PL intensity of MC/Mn 3 O 4 /SrTiO 3 , the lower the recombination rate, indicating that MC further improves the separation efficiency of photogenerated carrier.…”

Section: Photoluminescence Spectral Analysismentioning

confidence: 99%

Carbon/Mn₃O₄/SrTiO₃ microsphere photocatalyst for the efficient removal of high‐concentration methylene blue from water

Zhang

Qi²,

Zhang

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND With the development of the textile and dye industry, a large amount of dye wastewater has been discharged. Semiconductor photocatalysis has been widely used in the treatment of environmental pollution, so it is very important to study efficient, nontoxic and stable photocatalysts. RESULTS In this study, a microspherical activated carbon/Mn3O4/SrTiO3 composite photocatalyst with high catalytic activity was synthesized using sol–gel and chemical precipitation methods. The photocatalyst was characterized through X‐ray diffraction, scanning and transmission electron microscopy, energy dispersive spectroscopy, X‐ray photoelectron spectroscopy, photoluminescence, Electrochemical impedance spectroscopy, electron paramagnetic resonance spectroscopy and photocurrent measurements, and the effects of the initial methylene blue (MB) concentration and pH on the catalytic performance of the photocatalyst were investigated. The results revealed that the MC/Mn3O4/SrTiO3 composite has large light absorbance, and it can effectively inhibit photoinduced electron–hole pair recombination. The catalyst exhibited high photocatalytic degradation activity, and the degradation efficiency of MB at 300 ppm and pH 7 reached 99% after 80 min of UV light irradiation. The photodegradation process conformed to the pseudo‐first‐order kinetic model. Recyclability experiments showed that MC/Mn3O4/SrTiO3 composite has high stability, and the degradation rate of MB is > 70% after three repeat uses. CONCLUSIONS This work provides a new method for finding low‐cost, high‐performance materials that can be modified and put into industrial use. © 2023 Society of Chemical Industry (SCI).

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Effects of organic acids on microwave-assisted leaching for mesopore generation in FAU zeolite

Phuong,

Thuan,

Linh

et al. 2024

Appl. Phys. A

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Synthesis and characterization of recyclable PVA/SrTiO3/Ag2O composite with photocatalytic degradation performance of methylene blue

Cited by 9 publications

References 30 publications

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Carbon/Mn₃O₄/SrTiO₃ microsphere photocatalyst for the efficient removal of high‐concentration methylene blue from water

Effects of organic acids on microwave-assisted leaching for mesopore generation in FAU zeolite

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Synthesis and characterization of recyclable PVA/SrTiO3/Ag2O composite with photocatalytic degradation performance of methylene blue

Cited by 9 publications

References 30 publications

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Carbon/Mn3O4/SrTiO3 microsphere photocatalyst for the efficient removal of high‐concentration methylene blue from water

Effects of organic acids on microwave-assisted leaching for mesopore generation in FAU zeolite

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Carbon/Mn₃O₄/SrTiO₃ microsphere photocatalyst for the efficient removal of high‐concentration methylene blue from water