Improved Surface Charge Transfer in MoO3/BiVO4 Heterojunction Film for Photoelectrochemical Water Oxidation

He, Huichao; Zhou, Yong; Ke, Gaili; Zhong, Xiaohui; Yang, Minji; Bian, Liang; Lv, Kangle; Dong, Faqin

doi:10.1016/j.electacta.2017.10.013

Cited by 62 publications

(32 citation statements)

References 52 publications

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“…Photoelectrochemical (PEC) water splitting has been regarded as a potential avenue for sustainable energy supply. A main obstacle is the need of efficient and stable water oxidation photocatalysts [79,80]. As a high work function (>6.3 eV) and layered semiconductor, MoO 3 always hybridizes with other materials (such as BiVO 4 ) in order to match band potential and obtain an efficient catalyst.…”

Section: Photoelectrochemical Oxygen Evolution Reactionsmentioning

confidence: 99%

“…As a high work function (>6.3 eV) and layered semiconductor, MoO 3 always hybridizes with other materials (such as BiVO 4 ) in order to match band potential and obtain an efficient catalyst. Lou [80]. MoO 3 /Ag/TiO 2 nanotube arrays were also successfully synthesized and investigated systemically.…”

Section: Photoelectrochemical Oxygen Evolution Reactionsmentioning

confidence: 99%

“…At 0.8 V (vs. SCE), the photocurrent of MoO3/BiVO4 was six times higher than bare BiVO4 film. The improvement can be attributed to band potentials and conductivity differences between MoO3 and BiVO4 [80]. MoO3/Ag/TiO2 nanotube arrays were also successfully synthesized and investigated systemically.…”

Section: Photoelectrochemical Oxygen Evolution Reactionsmentioning

confidence: 99%

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Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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This paper mainly focuses on the application of nanostructured MoO 3 materials in both energy and environmental catalysis fields. MoO 3 has wide tunability in bandgap, a unique semiconducting structure, and multiple valence states. Due to the natural advantage, it can be used as a high-activity metal oxide catalyst, can serve as an excellent support material, and provide opportunities to replace noble metal catalysts, thus having broad application prospects in catalysis. Herein, we comprehensively summarize the crystal structure and properties of nanostructured MoO 3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO 3 are also discussed.Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].Molybdenum oxide (MoO 3 ), a kind of transition metal oxide with a n-type semiconducting, nontoxic nature and high stability, has attracted a lot of attention. In particular, nanostructured MoO 3 has demonstrated superior properties to bulk MoO 3 , which is successfully employed in rechargeable batteries [13], capacitors [14], photocatalysis [15], electrocatalysis [16], gas sensors [17], and other applications [6]. The extended tunnels between the MoO 6 octahedra in MoO 3 are suitable for insert/de-insert mobile ions, such as H + and Li + , and multiple oxidation states can enable rich redox reactions. Moreover, the superiorities of low cost, chemical stability, high theoretical specific capacity (1117 mA·h/g), and the environmentally friendly nature make nanostructured MoO 3 exceptional electrode materials for rechargeable batteries capacitors [13,18]. MoO 3 has been investigated as the photocatalyst in terms of its anisotropic layered structure for absorbing UV, as well as visible light. Introducing a defect band by H + intercalation or oxygen vacancies can create defect state and decrease MoO 3 bandgap, which effectively increase the photocatalytic activity [15]. Each oxygen atom bonds to only one molybdenum atom of MoO 6 octahedra, and oxygen vacancy generates Mo dangling bond. MoO 3 favors the adsorption of water molecules in oxygen vacancies, which act as electron acceptors and consequently reduce the energy barrier make it highly reactive for electrocatalysis [2,19]. As a good gasochromic material, MoO 3 has efficient positive-ion accommodation and good charge transfer, and it can be used as an optical-based gas sensor. Moreover, relying on the change in the conductance of the oxide-on-gas adsorption/reaction, MoO 3 has been used for NO, NO 2 , CO, H 2 , NH 3 , and other gases [17]. The unique structure strongly affects the performances. Large efforts have been made to obtain nanostructured MoO 3 with appealing properties by engineering multiple synthetic strategies for the applications in various fields. A variety of methods have been developed, including hydrothermal met...

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Section: Photoelectrochemical Oxygen Evolution Reactionsmentioning

confidence: 99%

Section: Photoelectrochemical Oxygen Evolution Reactionsmentioning

confidence: 99%

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Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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“…25 The combination of other semiconductor elements and BiVO 4 will help to improve the electron transfer efficiency and facilitate electron-hole pair separation, thus enhancing the energy conversion efficiency. 26 In recent years, sulde-based photocatalysts (MoS 2 , WS 2 , CdS et al) have become the focus of most exploration as they enjoy a relatively narrow band gap as well as a greater range of light absorption. [27][28][29] Copper sulde (CuS), a promising p-type semiconductor, can absorb and utilize ultraviolet (UV) and visible light due to its small band gap (2.1 eV).…”

Section: Introductionmentioning

confidence: 99%

The design and growth of peanut-like CuS/BiVO₄ composites for photoelectrochemical sensing

et al. 2020

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“…On the other hand, there are no literature reports related to the use of bare MoO 3 as a photoanode for photoelectrochemical water splitting. In some reports, MoO 3 is utilized only as a modifier of commonly used photoanode materials (TiO 2 , BiVO 4 ) [19,20]. The features that material has to possess to be a prospective photoanode for water photoelectrooxidation are, i.e., (i) be an n-type semiconductor, (ii) has an energy band gap allowing the visible light to be absorbed, and (iii) be characterized by the appropriate valence band location allowing water photooxidation.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced K+ Intercalation into MoO3/FTO Photoanode—the Impact on the Photoelectrochemical Performance

et al. 2019

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In this work, thin layers of MoO 3 were tested as potential photoanodes for water splitting. The influence of photointercalation of alkali metal cation (K +) into the MoO 3 structure on the photoelectrochemical properties of the molybdenum trioxide films was investigated for the first time. MoO 3 thin films were synthesized via thermal annealing of thin, metallic Mo films deposited onto the FTO substrate using a magnetron sputtering system. The Tauc and Mott-Schottky plots analysis were performed in order to determine the energy bands position of the investigated material. The photointercalation effect of K + on photoelectrochemical properties of FTO/MoO 3 photoanodes was studied using electrochemical techniques performed under simulated solar light illumination. It was proven that pristine MoO 3 layers cannot act as effective photoanodes for water splitting due to the utilization of the photoexcited electrons in the intercalation process. The photochromic phenomenon related to Mo 6+ centers reduction, and K + intercalation occurs at a potential range in which the photoanode exhibits photoelectrochemical activity towards water photooxidation.

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Improved Surface Charge Transfer in MoO3/BiVO4 Heterojunction Film for Photoelectrochemical Water Oxidation

Cited by 62 publications

References 52 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

The design and growth of peanut-like CuS/BiVO₄ composites for photoelectrochemical sensing

Photoinduced K+ Intercalation into MoO3/FTO Photoanode—the Impact on the Photoelectrochemical Performance

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Improved Surface Charge Transfer in MoO3/BiVO4 Heterojunction Film for Photoelectrochemical Water Oxidation

Cited by 62 publications

References 52 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

The design and growth of peanut-like CuS/BiVO4 composites for photoelectrochemical sensing

Photoinduced K+ Intercalation into MoO3/FTO Photoanode—the Impact on the Photoelectrochemical Performance

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The design and growth of peanut-like CuS/BiVO₄ composites for photoelectrochemical sensing