In-situ fabrication of MoO3 nanobelts decorated with MoO2 nanoparticles and their enhanced photocatalytic performance

Xi, Qingyang; Liu, Jinsong; Wu, Zhengying; Bi, Hongfei; Li, Ziquan; Zhu, Kongjun; Zhuang, Jiajia; Chen, Jixun; Lu, Songlong; Huang, Yanfang; Qian, Guoming

doi:10.1016/j.apsusc.2019.03.009

Cited by 67 publications

(24 citation statements)

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“…Owing to the distinctive layered structure, MoO 3 exhibited strong adsorption performance and good photocatalytic activity for photodegradation organic pollutants [95][96][97][98]. Inadequately, the large band gap (2.7-3.2 eV) of MoO 3 usually limits the photocatalytic performance of decomposing organic pollutants [99,100]. Based on MoO 3 , various strategies are employed to develop the new efficient photocatalytic materials with the desired properties.…”

Section: Photodegradation Of Organic Pollutantsmentioning

confidence: 99%

“…Hybrid nanomaterials can be designed to help enhance the degradation efficiency. Lots of efforts have been made in the design of MoO 3 -based hybrids such as Eu(Gd)-doped MoO 3 [101,102], rGO/C-MoO 3 [15], and MoO 2 /MoO 3 [100]. Figure 6c-e showed the energy band alignment of p-MoO 3 nanostructures and n-TiO 2 nanofiber heterojunctions and the postulate mechanism for photodegradation of RhB under UV irradiation.…”

Section: Photodegradation Of Organic Pollutantsmentioning

confidence: 99%

“…(b) Photocatalytic activities in RhB degradation for pure MoO3 and MoO2/MoO3 nanocomposites with different contents of MoO2 under visible-light irradiation[100]. Reprinted with permission from[100]. Copyright 2019 Elsevier.…”

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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: Photodegradation Of Organic Pollutantsmentioning

confidence: 99%

Section: Photodegradation Of Organic Pollutantsmentioning

confidence: 99%

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Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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“…However it is hard to give full play to potential of FeOOH by coupling with some adsorption materials, the introduction of semiconductor photocatalyst may improve the situation. In the latest research, MoO 3 has proven to be an excellent catalyst, showing hopeful photocatalytic activity under visible light because of its bandgap energy (2.8–3.2 eV) . Meanwhile, one‐dimensional (1D) nanomaterials like nanorods have been reported to have excellent photocatalytic activity.…”

Section: Figurementioning

confidence: 99%

“…Furthermore, the metal atoms could increase the electron density of the active site as electron donors that form acidic oxygen‐containing surface groups on the catalyst surface. The properties promoted the adsorption of H 2 O 2 and favored the formation of a H + concentrated region which explain the broaden of pH application …”

Section: Figurementioning

confidence: 99%

α‐FeOOH−MoO₃ Nanorod for Effective Photo‐Fenton Degradation of Dyes and Antibiotics at a Wide Range of pH

Xing

Zhou

Chen

et al. 2020

Chemistry An Asian Journal

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It's highly significant to develop a novel catalyst, which can be active at a wide range of pH, for an effective photo‐Fenton reaction. In this work, α‐FeOOH−MoO3 nanorod was prepared by a one‐step hydrothermal method and applied in photo‐Fenton degradation of organic pollutants. Benefit from the electron migration mechanism of Z‐scheme and excellent photoelectric performance, the catalyst exhibited superior photo‐Fenton activity in degradation of organic pollutants. In addition, the catalyst holds good stability after 5 recycles. These results demonstrated that this catalyst has wide application prospect in organic wastewater treatment.

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Turning Silica into Enzymes by Hydrogenation: Simultaneously Achieving Oxygen Vacancy Engineering and Tumor Adaptive Accumulation for NIR‐II‐Potentiated Therapy

Liu

et al. 2023

Adv Funct Materials

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Molybdenum (Mo)‐based nanozymes have been attracting increasingly extensive attention in photocatalytic antitumor field due to their versatile physicochemical properties, whereas the limited light capture rate and high recombination rate of photogenerated carriers seriously impedes their further development. Herein, MoO3‐starring silica nanozymes with hyaluronic acid modification (HMMSNs@HA) are innovated by hydrogenation to simultaneously achieve oxygen vacancies (OVs) engineering and tumor adaptive accumulation for the second near‐infrared (NIR‐II, 1064 nm) light‐potentiated thermal‐catalytic therapy. The hydrogenation‐regulated OVs can narrow the band gap of HMMSNs from 2.66 to 1.16 eV, achieving optimal optical absorption in NIR‐II region. Additionally, HMMSNs hold high separation efficacy of electron‐hole pairs to facilitate the generation of reactive oxygen species under laser irradiation. Significantly, HMMSNs@HA are stable in tumor microenvironment, while can degrade in normal physiological conditions, thereby offering tumor‐adaptive accumulation. Synchrotron radiation‐based extended X‐ray absorption fine structure spectroscopy reveals that OVs enabling the Mo4+ and Mo5+ formation, which can react with tumor endogenous H2O2 to produce hydroxyl radicals. Furthermore, OVs‐induced localized surface plasmon resonance effect endows the nanozymes with photothermal conversion efficacy of 32.3%, which affords NIR‐II‐excited photonic hyperthermia‐enhances catalytic therapy. All the experimental results demonstrate the high safety and superiorities of HMMSNs@HA for NIR‐II‐initiate therapy.

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In-situ fabrication of MoO3 nanobelts decorated with MoO2 nanoparticles and their enhanced photocatalytic performance

Cited by 67 publications

References 65 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

α‐FeOOH−MoO₃ Nanorod for Effective Photo‐Fenton Degradation of Dyes and Antibiotics at a Wide Range of pH

Turning Silica into Enzymes by Hydrogenation: Simultaneously Achieving Oxygen Vacancy Engineering and Tumor Adaptive Accumulation for NIR‐II‐Potentiated Therapy

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In-situ fabrication of MoO3 nanobelts decorated with MoO2 nanoparticles and their enhanced photocatalytic performance

Cited by 67 publications

References 65 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

α‐FeOOH−MoO3 Nanorod for Effective Photo‐Fenton Degradation of Dyes and Antibiotics at a Wide Range of pH

Turning Silica into Enzymes by Hydrogenation: Simultaneously Achieving Oxygen Vacancy Engineering and Tumor Adaptive Accumulation for NIR‐II‐Potentiated Therapy

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α‐FeOOH−MoO₃ Nanorod for Effective Photo‐Fenton Degradation of Dyes and Antibiotics at a Wide Range of pH