Separating type I heterojunction of NaBi(MoO4)2/Bi2MoO6 by TiO2 nanofibers for enhanced visible-photocatalysis

Li, Yuejun; Cao, Ting; Mei, Ze-Min; Li, Xiaoping; Sun, Dalin

doi:10.1016/j.chemphys.2020.110696

Cited by 22 publications

(8 citation statements)

References 38 publications

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“…The diffraction peaks correspond to (101), (004), (200), (105), (201), and (204) crystal planes of the TiO 2 anatase phase (JCPDS card number 21-1272). , While diffraction peaks at around 2θ = 28.3, 32.6, 46.7, 55.6, and 58.5° could correspond to (131), (200), (062), and (133) crystal planes of orthorhombic structure of Bi 2 MoO 6 , respectively (JCPDS no. 72-1524). , No impurities and no extra peaks were observed in the composite catalysts, indicating that Bi 2 MoO 6 nanosheets were successfully grown on TiO 2 nanobelts. With the increase of Bi 2 MoO 6 content in composites, the Bi 2 MoO 6 characteristic peak intensity increased significantly.…”

Section: Resultsmentioning

confidence: 88%

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Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

Ahmadi,

Alavi,

Larimi

2023

Inorg. Chem.

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Section: Resultsmentioning

confidence: 88%

“…72-1524). 17,82 No impurities and no extra peaks were observed in the composite catalysts, indicating that Bi 2 MoO 6 nanosheets were successfully grown on TiO 2 nanobelts. With the increase of Bi 2 MoO 6 content in composites, the Bi 2 MoO 6 characteristic peak intensity increased significantly.…”

Section: Resultsmentioning

confidence: 97%

Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

Ahmadi,

Alavi,

Larimi

2023

Inorg. Chem.

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“…The XRD patterns of prepared TiO 2 nanocontainers match well the structure of the TiO 2 anatase phase in the standard card (JCPDS No. 21-2172), which exhibits diffraction peaks at 25.22°, 37.83°, 47.92°, 53.94°, 54.90°, 62.63°, 68.78°, 70.02°, 74.97°, and 82.48°, corresponding to the (110), (004), (200), (105), (211), (204), (116), (220), (215), and (224) crystal planes, respectively. , TiO 2 /PANI-MoO 4 2– and TiO 2 /PANI-MoO 4 2– /PDA nanocontainers, which were fabricated by depositing individual layers on the TiO 2 surface, exhibit similar diffraction peaks compared to TiO 2 nanocontainers, but their peak intensity decreases as the number of deposited layers increases. This shows that no crystallographic changes occur in TiO 2 during the layer-by-layer assembly, while the increasing thickness of the outer composite hides the TiO 2 diffraction intensity.…”

Section: Resultsmentioning

confidence: 99%

“…Electrochemical tests were performed using a conventional threeelectrode electrolytic cell, where the platinum electrode was used as 004), ( 200), ( 105), ( 211), ( 204), ( 116), ( 220), (215), and (224) crystal planes, respectively. 24,25 TiO 2 /PANI-MoO 4 2− and TiO 2 /PANI-MoO 4…”

Section: Methodsmentioning

confidence: 99%

TiO₂ Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings

Jin,

Duan,

Zhan

et al. 2023

ACS Appl. Mater. Interfaces

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Stimulus-responsive coatings can provide active corrosion protection in response to environmental changes, but they have not reached their anticipated application prospects because of the intricate preparation processes of hollow materials and methods for loading corrosion inhibitors. Herein, polyaniline molybdate corrosion inhibitor and polydopamine-wrapped titanium dioxide nanocontainers (named TiO2/PANI-MoO4 2–/PDA) are synthesized via a simple three-step electrostatic assembly technique. Introducing TiO2/PANI-MoO4 2–/PDA nanocontainers in smart waterborne epoxy (WEP) coatings affords the latter with high barriers and long-term corrosion protection. The successful deposition of each layer on the TiO2 nanocontainer surface was validated via Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy. Release test results show that the molybdate corrosion inhibitor exhibits notable pH-responsive activity under acidic conditions and slow release in neutral environments, which improves the corrosion resistance of coatings. The addition of synthetic nanocontainers greatly improves the impermeability of WEP coatings. The charge transfer resistance of WEP/TiO2/PANI-MoO4 2–/PDA coatings is 1.79 × 1011 Ω cm2 after 30 day immersion in a 3.5 wt % NaCl solution, which is 3.32 × 105 times higher than that of WEP coatings. WEP/TiO2/PANI-MoO4 2–/PDA coatings remain uniform and reliable, even after 50 days of salt spray exposure. The excellent corrosion protection of WEP/TiO2/PANI-MoO4 2–/PDA coatings is attributed to (1) the enhanced dispersion and compatibility of PDA in the coating for nanocontainers, (2) the combination of phenolic hydroxyl groups of PDA and Fe, which inhibit corrosion activity on the exposed metal surface, and (3) the on-demand release of the MoO4 2– inhibitor, which provides sustained passivation protection. This work proposes a strategy to simplify the preparation of responsive long-term anticorrosion coatings and extend their service lives.

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“…NaBi(MoO 4 ) 2 have been grown and/or synthesized in various forms like single crystal, nanocrystal, nanorod, ceramics, nanosheet. The heterojunction structures of NaBi(MoO 4 ) 2 have been also formed with different compounds like Bi 2 O 3 [16], Bi 2 MoO 6 [17], RuO 2 [18]. The optoelectronic and photocatalytic characteristics of these heterojunctions were investigated in the corresponding studies.…”

Section: Introductionmentioning

confidence: 99%

Growth and temperature tuned band gap characteristics of NaBi(MoO₄)₂ single crystal

Isik¹,

güler²,

Gasanly³

2023

Phys. Scr.

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Structural and optical properties of double sodium–bismuth molybdate NaBi(MoO4)2 semiconductor compound was investigated by X-ray diffraction, Raman and transmission experiments. From the X-ray diffraction experiments, the crystal that has tetragonal structure was obtained. Vibrational modes of the crystal were found from the Raman experiments. Transmission experiments were performed in the temperature range of 10-300 K. Derivative spectroscopy analysis and absorption spectrum analysis were performed to get information about the change in band gap energy of the crystal with temperature. It was observed that the band gap energies of the crystal at different temperatures obtained from these techniques are well consisted with each other. By the help of absorption spectrum which was obtained from transmission measurements performed at varying temperatures, absolute zero value of the band gap and average phonon energy as 3.03 ± 0.02 eV and 〈E_ph 〉 = 24 ± 0.2 meV, respectively. Moreover, based on absorption spectrum analysis the Urbach energy of the crystal was obtained as 0.10 eV.

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Separating type I heterojunction of NaBi(MoO4)2/Bi2MoO6 by TiO2 nanofibers for enhanced visible-photocatalysis

Cited by 22 publications

References 38 publications

Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

TiO₂ Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings

Growth and temperature tuned band gap characteristics of NaBi(MoO₄)₂ single crystal

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Separating type I heterojunction of NaBi(MoO4)2/Bi2MoO6 by TiO2 nanofibers for enhanced visible-photocatalysis

Cited by 22 publications

References 38 publications

Pt–Cu@Bi2MoO6/TiO2 Photocatalyst for CO2 Reduction

Pt–Cu@Bi2MoO6/TiO2 Photocatalyst for CO2 Reduction

TiO2 Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings

Growth and temperature tuned band gap characteristics of NaBi(MoO4)2 single crystal

Contact Info

Product

Resources

About

Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

Pt–Cu@Bi₂MoO₆/TiO₂ Photocatalyst for CO₂ Reduction

TiO₂ Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings

Growth and temperature tuned band gap characteristics of NaBi(MoO₄)₂ single crystal