Ag/Bi2MoO6-x with enhanced visible-light-responsive photocatalytic activities via the synergistic effect of surface oxygen vacancies and surface plasmon

Wang, Danjun; Shen, Huidong; Guo, Li; Wang, Chan; Fu, Feng; Liang, Yucang

doi:10.1016/j.apsusc.2017.12.002

Cited by 92 publications

(50 citation statements)

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“…The band at 734 cm −1 was attributed to the asymmetric stretching mode of MoO 6 involving vibrations of the equatorial oxygen atoms, and the band at 570 cm −1 corresponded to the bending vibration of MoO 6 . Also, the absorption peak at 668 cm −1 was ascribed to the Bi−O stretching mode …”

Section: Resultsmentioning

confidence: 99%

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

Hong

Xue

et al. 2019

ChemistrySelect

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Bi2MoO6 is a bismuth‐based multi‐element photocatalyst with good visible light response due to its narrow band gap. However, its high photogenerated electron‐hole recombination rate limits its application as a photocatalyst. In this work, visible‐light‐driven MoS2/Bi2MoO6 composite photocatalyst was successfully synthesized by a hydrothermal method. The composite containing 1% MoS2 exhibited the best photodegradability and good cycling stability. The apparent reaction rate constant for the 1% MoS2 decorated Bi2MoO6 (0.03625) was about 2 times higher than that of pure Bi2MoO6 (0.01913). As a non‐precious metal promoter, MoS2 promoted the carrier‐separation efficiency and improved the absorption of visible light, which resulted in the enhancement of photocatalytic activity of the composite catalyst.

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Section: Resultsmentioning

confidence: 99%

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

Hong

Xue

et al. 2019

ChemistrySelect

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“…[40] In brief, Bi(NO 3 ) 3 ·5 H 2 O( 1.3 mmol) and Na 2 MoO 4 ·2 H 2 O (0.65 mmol) were dissolved in ethylene glycol (EG) (13.0 mL) with vigorous stirring. Distilled water was used in all experiments.…”

Section: Methodsmentioning

confidence: 99%

“…[40] Briefly,t he pure BMO (BMO-SOVs) (1.0 mmol) and ac ertain amount of AgNO 3 solution (3.5 mL, 10 À3 gmL À1 )w ere added to deionized water (20 mL) with stirring. [40] Briefly,t he pure BMO (BMO-SOVs) (1.0 mmol) and ac ertain amount of AgNO 3 solution (3.5 mL, 10 À3 gmL À1 )w ere added to deionized water (20 mL) with stirring.…”

Section: Methodsmentioning

confidence: 99%

“…[39] However,f or the patterns of 2%A/BMO-SOVs-375(PD) and 2%A/BMO(PD) (PD = photoreduction;f or explanation of nomenclature, see the Experimental Section), the intensity of the diffraction peaks was severely weakened, whichm ight be attributed to the XRD signals being partially covered by signals of the Ag nanoparticles. [40] Figure S1 as hows the XRD patterns of 2%A/BMO-SOVs prepared at various calcination temperatures. [40] Figure S1 as hows the XRD patterns of 2%A/BMO-SOVs prepared at various calcination temperatures.…”

Section: Structure and Morphology Characterizationmentioning

confidence: 99%

“…[66] Furthermore, when metallic Ag nanoparticles are deposited on the BMO-SOVs-375 surface, as ar esult of the Fermi level equilibrium between the BMO and Ag nanoparticles, Schottky barriers are formed at am etal-semiconductor junction. [40] Therefore, the resulting 2%A/BMO-SOVs-375p hotocatalyst shows av ery high photocatalytica ctivity by as ynergetic effect of SOVs and metallic Ag nanoparticles. [40] Therefore, the resulting 2%A/BMO-SOVs-375p hotocatalyst shows av ery high photocatalytica ctivity by as ynergetic effect of SOVs and metallic Ag nanoparticles.…”

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confidence: 96%

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Efficient Degradation of Phenol and 4‐Nitrophenol by Surface Oxygen Vacancies and Plasmonic Silver Co‐Modified Bi₂MoO₆ Photocatalysts

Shen

Xue

et al. 2018

Chemistry A European J

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In this work, the surface plasmon resonance effect of metallic Ag, surface oxygen vacancies (SOVs), and Bi 2 MoO 6 (BMO) material werer ationally combined to construct new oxygen-vacancy-rich Ag/Bi 2 MoO 6 (A/BMO-SOVs) photocatalysts. Their synergistic effect on the photocatalytic degradation of phenol and4 -nitrophenol under visible-light irradiation (l ! 420 nm) was also investigated. TEM, EPR, and Raman spectra demonstrate the co-existence of metallicA g nanoparticles, surface oxygen vacancies, and Bi 2 MoO 6 due to ac ontrolled calcination process. The experimental results disclose that the 2%A/BMO-SOVs-375 sample exhibited the highest photocatalytic activity for the degradation of both phenol and 4-nitrophenol under visible-light irradiation, achieving nearly 100 and 80 %r emoval efficiency,r espectively, and demonstrated the apparent reactionr ate constants (k app )1 83 and 26.5 times, respectively,h ighert han that of pure Bi 2 MoO 6 .T he remarkable photodegradation performance of A/BMO-SOVs for organic substances is attributed to the synergistic effect between the surface oxygen vacancies, metallic Ag nanoparticles, and Bi 2 MoO 6 ,w hich not only improves the visible-light response ability,but also facilitates charge separation. Thus, this work provides an effective strategy forthe design and fabrication of highly efficient photocatalysts through integrating surface oxygen vacancies and the surfacep lasmon resonance effect of nanoparticles, which has the potential for both water treatment and air purification.

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Unusual aliovalent Cd doped γ‐Bi₂MoO₆ nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation

Zhang,

Fang,

Ning

et al. 2023

Carbon Neutralization

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Due to γ‐Bi2MoO6 (BMO) has attracted considerable attention because of its unique layered perovskite structure and excellent electrical conductivity. However, the easy recombination of electron–hole pairs limits its practical application. To address this issue, we successfully prepared aliovalent Cd2+ doped BMO (Cd‐BMO) by using a simple hydrothermal method for the degradation of the sulfamethoxazole (SMZ) and Rhodamine B (RhB). The result found that the degradation efficiency of Cd‐BMO is significantly higher than that of BMO, despite an increase in the bandgap after the introduction of Cd2+. The superior degradation efficiency of 8% Cd‐BMO, with a smaller particle size and larger specific surface area, can be attributed to its fast charge separation efficiency, low charge transfer resistance, and low rate of electron–hole pair recombination. Repeated and ion spillover experiments prove that 8% Cd‐BMO shows good stability and environmental protection. Theoretical simulation demonstrates that Cd offers electrons to the BMO system due to the decreased binding energy of BMO. The 8% Cd‐BMO sample can provide a suitable electric band edge for generating dominant active radicals during degradation. This work not only provides a potential candidate of 8% Cd‐BMO for practical degradation but also sheds light on the design of superior photocatalysts.

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Ag/Bi2MoO6-x with enhanced visible-light-responsive photocatalytic activities via the synergistic effect of surface oxygen vacancies and surface plasmon

Cited by 92 publications

References 94 publications

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

Efficient Degradation of Phenol and 4‐Nitrophenol by Surface Oxygen Vacancies and Plasmonic Silver Co‐Modified Bi₂MoO₆ Photocatalysts

Unusual aliovalent Cd doped γ‐Bi₂MoO₆ nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation

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Ag/Bi2MoO6-x with enhanced visible-light-responsive photocatalytic activities via the synergistic effect of surface oxygen vacancies and surface plasmon

Cited by 92 publications

References 94 publications

MoS2 as Cocatalyst for Improving Photocatalytic Performance of Bi2MoO6

MoS2 as Cocatalyst for Improving Photocatalytic Performance of Bi2MoO6

Efficient Degradation of Phenol and 4‐Nitrophenol by Surface Oxygen Vacancies and Plasmonic Silver Co‐Modified Bi2MoO6 Photocatalysts

Unusual aliovalent Cd doped γ‐Bi2MoO6 nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation

Contact Info

Product

Resources

About

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

Efficient Degradation of Phenol and 4‐Nitrophenol by Surface Oxygen Vacancies and Plasmonic Silver Co‐Modified Bi₂MoO₆ Photocatalysts

Unusual aliovalent Cd doped γ‐Bi₂MoO₆ nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation