In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation

Li, Juan; Yin, Yunchao; Liu, Enzhou; Ma, Yongning; Wan, Jun; Hu, Xiaoyun

doi:10.1016/j.jhazmat.2016.09.008

Cited by 329 publications

(67 citation statements)

References 50 publications

(52 reference statements)

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“…According to these absorption edges, the bandgap energies of bulk g-C 3 N 4 and g-C 3 N 4 nanoparticles are calculated to be ~ 2.72 and ~ 2.88 eV, respectively. Compared with bulk g-C 3 N 4 , the enlarged bandgap of g-C 3 N 4 nanoparticles is mainly attributed to the quantum confinement effect 32 . As seen from the Fig.4 (b), the absorption edge of BiFeO 3 is located at ~ 563 nm, and the corresponding bandgap energy is estimated to be ~ 2.2 eV.…”

Section: Optical Absorption Propertiesmentioning

confidence: 99%

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Yang

Tang

et al. 2018

Mat. Res.

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In this work, the g-C 3 N 4 nanoparticles decorated BiFeO 3 microspheres composites (g-C 3 N 4 / BiFeO 3 ) were successfully synthesized by hydrothermal treatment of g-C 3 N 4 nanoparticles together with BiFeO 3 microspheres. The SEM and HRTEM observation indicate that the C 3 N 4 nanoparticles with size of 30-50 nm are well decorated on the surface of BiFeO 3 microspheres. The photocatalytic activities of the samples are investigated by the degradation of methylene blue (MB) under the irradiation of simulated sunlight. The as-prepared g-C 3 N 4 /BiFeO 3 composites exhibit remarkable enhanced photocatalytic activity compared with bare BiFeO 3 . More importantly, the photocataltic performance of the composites is further confirmed by the degradation of colorless phenol. Furthermore, the favorable catalytic stability of composites is demonstrated through the recycling photocatalytic experiment. The enhanced photocatalytic activity of g-C 3 N 4 /BiFeO 3 composites is mainly attributed to the separation of the photogenerated electron-hole pairs, resulting from the migration of the photoinduced charge between g-C 3 N 4 nanoparticles and BiFeO 3 . A possible photocatalytic mechanism for dye degradation over g-C 3 N 4 /BiFeO 3 composite is proposed based on the active species trapping experiment, revealing that the photogenerated hole (h + ) and hydrogen peroxide (H 2 O 2 ) are regarded as the major active species for the decomposition of dye, while hydroxyl radicals (•OH) plays a minor role in the photocatalytic reaction.

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Section: Optical Absorption Propertiesmentioning

confidence: 99%

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Yang

Tang

et al. 2018

Mat. Res.

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“…Figure a shows the XPS survey spectrum, which indicates the presence of Bi, Mo, Ag, I, Si and O in the composite. As shown in Figure b, the Bi 4 f spectrum has two obvious peaks at 159.02 and 164.32 eV, corresponding to Bi 4f 7/2 and Bi 4f 5/2 of Bi 3+ , while the Mo 3d spectrum in Figure c has two linked peaks at 231.94 and 235.17 eV corresponding to Mo 3d 5/2 and Mo 3d 3/2 of Mo 6+ . Both Bi 3+ and Mo 6+ exist in Bi 2 MoO 6 .…”

Section: Resultsmentioning

confidence: 87%

“…Figure shows the FT‐IR spectra of Bi 2 MoO 6 , vermiculite, B‐V4 and 5 wt%‐A/B‐V4 composites in the wavenumber range of 4000–400 cm −1 . As shown in Figure , pure Bi 2 MoO 6 has characteristic peaks at 818 and 619 cm −1 which can be contributed to Mo−O and Bi−O stretching vibration . A dispersive vibrational absorption peak of Si−O tetrahedral layered Si‐O−Si is formed at 1011 cm −1 for vermiculite .…”

Section: Resultsmentioning

confidence: 88%

Efficient Adsorption and Photocatalytic Degradation of Dyes by AgI‐Bi₂MoO₆/Vermiculite Composite under Visible Light

et al. 2019

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A novel efficient AgI‐Bi2MoO6/vermiculite adsorption‐photocatalyst is successfully synthesized by sol‐gel method and precipitation method. The structure and properties of AgI‐Bi2MoO6/vermiculite were analyzed by XRD, FT‐IR, XPS, SEM, TEM, BET, and DRS. All the AgI‐Bi2MoO6/vermiculite composites with different AgI content show enhanced photocatalytic performance for malachite green (MG) dye degradation compared to pure Bi2MoO6 and Bi2MoO6/vermiculite composites. The highest degradation efficiency for MG (30 mg/L) via 5 wt%‐AgI‐Bi2MoO6/vermiculite composite (AgI content 5 wt%) photocatalyst (1 g/L) reaches 98.89% in 60 min at pH 9 without salt. The enhanced performance can be attributed to the uniform dispersion of Bi2MoO6 and AgI on the surface of vermiculite, the stable structure, the enhanced adsorption and the widened visible‐light absorption range as well as the faster separation of electron‐hole pairs. Besides, the photocatalyst still shows relatively high adsorption and photocatalytic performance after three times recycling. In addition, the possible photocatalytic mechanism is proposed at the end.

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“…Splitting water to produce H 2 and O 2 using solar energy has been considered to be one of the most valuable photoreactions because of its potential to alleviate the global energy and resource crisis . Li et al synthesized Bi 2 MoO 6 /C 3 N 4 composites for photocatalytic hydrogen evolution with triethanolamine (TEOA) as a sacrificial reagent . Herein, TEOA served as an electron donor and meanwhile was used to consume the photogenerated holes.…”

Section: Applicationsmentioning

confidence: 99%

Modulation of Bi₂MoO₆‐Based Materials for Photocatalytic Water Splitting and Environmental Application: a Critical Review

Jiang

Wang

et al. 2019

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Highly active photocatalysts driving chemical reactions are of paramount importance toward renewable energy substitutes and environmental protection. As a fascinating Aurivillius phase material, Bi 2 MoO 6 has been the hotspot in photocatalytic applications due to its visible light absorption, nontoxicity, low cost, and high chemical durability. However, pure Bi 2 MoO 6 suffers from low efficiency in separating photogenerated carriers, small surface area, and poor quantum yield, resulting in low photocatalytic activity. Various strategies, such as morphology control, doping/defect-introduction, metal deposition, semiconductor combination, and surface modification with conjugative π structures, have been systematically explored to improve the photocatalytic activity of Bi 2 MoO 6 . To accelerate further developments of Bi 2 MoO 6 in the field of photocatalysis, this comprehensive Review endeavors to summarize recent research progress for the construction of highly efficient Bi 2 MoO 6 -based photocatalysts. Furthermore, benefiting from the enhanced photo catalytic activity of Bi 2 MoO 6 -based materials, various photocatalytic applications including water splitting, pollutant removal, and disinfection of bacteria, were introduced and critically reviewed. Finally, the current challenges and prospects of Bi 2 MoO 6 are pointed out. This comprehensive Review is expected to consolidate the existing fundamental theories of photo catalysis and pave a novel avenue to rationally design highly efficient Bi 2 MoO 6 -based photocatalysts for environmental pollution control and green energy development.

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In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation

Cited by 329 publications

References 50 publications

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Efficient Adsorption and Photocatalytic Degradation of Dyes by AgI‐Bi₂MoO₆/Vermiculite Composite under Visible Light

Modulation of Bi₂MoO₆‐Based Materials for Photocatalytic Water Splitting and Environmental Application: a Critical Review

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In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation

Cited by 329 publications

References 50 publications

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Efficient Adsorption and Photocatalytic Degradation of Dyes by AgI‐Bi2MoO6/Vermiculite Composite under Visible Light

Modulation of Bi2MoO6‐Based Materials for Photocatalytic Water Splitting and Environmental Application: a Critical Review

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Efficient Adsorption and Photocatalytic Degradation of Dyes by AgI‐Bi₂MoO₆/Vermiculite Composite under Visible Light

Modulation of Bi₂MoO₆‐Based Materials for Photocatalytic Water Splitting and Environmental Application: a Critical Review