Facile hydrothermal synthesis and improved photocatalytic activities of Zn2+ doped Bi2MoO6 nanosheets

Zhang, Xiang-Biao; Zhang, Lei; Hu, Jin‐Song; Huang, Xinhua

doi:10.1039/c6ra06972j

Cited by 61 publications

(28 citation statements)

References 49 publications

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“…To further enhance the PEC performance, considerable efforts have been devoted via various chemical modifications (such as doping, 6,7,[11][12][13][14]16 heterostructures [8][9][10]15,17 ).…”

Section: Introductionmentioning

confidence: 99%

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

Wang

et al. 2017

ACS Appl. Mater. Interfaces

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The nanowall has been regarded as a promising architecture for highly efficient photoelectrochemical (PEC) water splitting due to various advantages, such as open geometry, highly reactive facets, independent contact with current collector, and so forth. Here, a vertically aligned BiMoO nanosheet array, which is also called a nanowall, is first achieved directly on the ITO glass by a facile solvothermal approach. The structural features not only offer multiple superiorities for PEC processes, but also provide the bridge for in-depth insights of intrinsic features of BiMoO photoanodes. A quantitative analysis of the electrochemical process declares that the utilization of photogenerated charges in the BiMoO nanowall has been optimized, but the main obstacle comes from the severe bulk recombination and low efficiencies of charge separation. This evaluation both enriches the visual assessment methods and directs clear guidance for future improvement, which could serve as a beacon for well-directed and economic photoelectrode amelioration, to shorten the road toward ideal photoelectrodes.

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Section: Introductionmentioning

confidence: 99%

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

Wang

et al. 2017

ACS Appl. Mater. Interfaces

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“…The characteristicp eaks at 714, 798, and 844 cm À1 correspond to the asymmetric, symmetric, and asymmetrics tretching vibrations, respectively,o ft he MoO 6 octahedrons. [49] Additionally,t he characteristicp eaks below 400 cm À1 can be attributedt ob oth BiÀOs tretches and lattice modes, which is in good accordance with ap revious report. [50] The Raman spectrum of the BMO-SOVs-375 sample shows similar Raman vibration modes.…”

Section: Formation Of Surfaceoxygen Vacanciesmentioning

confidence: 88%

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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“…Correspondingly, both of the three doped samples possessed higher surface area and larger pore volume than pure Bi 2 MoO 6 . On the contrary, after doping with Zn 2+ , the structure transformed from hierarchical microspheres to nanosheets, and the surface areas of Zn‐doped products were relatively lower than that of pure Bi 2 MoO 6 . Doping can suppress the photoelectric charges recombination and the variation of band structure.…”

Section: Modulated Strategies Of Bi2moo6‐based Materials With Multifumentioning

confidence: 94%

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

Jiang

Wang

et al. 2019

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201

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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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Facile hydrothermal synthesis and improved photocatalytic activities of Zn²⁺ doped Bi₂MoO₆ nanosheets

Abstract: A novel sheet-like Zn2+ doped Bi2MoO6 photocatalyst with excellent UV-visible-light induced photocatalytic ability was successfully fabricated through a facile hydrothermal synthesis strategy.

Cited by 61 publications

References 49 publications

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

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

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

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Facile hydrothermal synthesis and improved photocatalytic activities of Zn2+ doped Bi2MoO6 nanosheets

Abstract: A novel sheet-like Zn2+ doped Bi2MoO6 photocatalyst with excellent UV-visible-light induced photocatalytic ability was successfully fabricated through a facile hydrothermal synthesis strategy.

Cited by 61 publications

References 49 publications

Self-Supported Bi2MoO6 Nanowall for Photoelectrochemical Water Splitting

Self-Supported Bi2MoO6 Nanowall for Photoelectrochemical Water Splitting

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

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

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Facile hydrothermal synthesis and improved photocatalytic activities of Zn²⁺ doped Bi₂MoO₆ nanosheets

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

Self-Supported Bi₂MoO₆ Nanowall for Photoelectrochemical Water Splitting

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

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