Synergistic integration of metallic Bi and defects on BiOI: Enhanced photocatalytic NO removal and conversion pathway

Sun, Minglu; Zhang, Wendong; Sun, Yanjuan; Zhang, Yuxin; Dong, Fan

doi:10.1016/s1872-2067(18)63195-x

Cited by 87 publications

(25 citation statements)

References 70 publications

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“…The conduction band of Bi 4 O 5 I 2 –Fe30–150 equals about −0.06 eV (vs NHE) (Figure S19), which is much more positive than the Fermi level of metallic Bi (−0.17 eV). This suggests that the photoexcited hot electrons of metallic Bi can migrate to Fe-doped Bi 4 O 5 I 2 , which is in accordance with the previous study on electron transferring from plasmonic metal Bi to BiOX . The illustration of charge transfer process is delineated in Figure S20.…”

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confidence: 90%

“…This suggests that the photoexcited hot electrons of metallic Bi can migrate to Fe-doped Bi 4 O 5 I 2 , which is in accordance with the previous study on electron transferring from plasmonic metal Bi to BiOX. 33 The illustration of charge transfer process is delineated in Figure S20. The implantation of single-atom Fe induces the generation of intermediate levels in Bi 4 O 5 I 2 , which allows the transition of photon-generated electrons from VB to intermediate levels then to mental Bi to maintain the neutrality.…”

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confidence: 99%

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Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Jin

Zhou

et al. 2021

ACS Materials Lett.

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Insufficient separation of photogenerated electron−hole and feeble CO 2 activation remain the main obstacles in the access to high-performance CO 2 reduction nowadays. Single-atom active sites engineering could be an efficient method through simultaneously promoting charge separation and CO 2 activation. Herein, a model of Bi 4 O 5 I 2 with single-atom Fe implanting and accompanying Bi decorating on surface is proposed to boost the performance. The single-atom Fe implantation decreases the value of surface work function, allowing the fast transition of photon-generated electrons from the surface of catalyst to CO 2 molecule. In situ Fourier transform infrared (FT-IR) spectra, CO 2 adsorption measurements, density functional theory (DFT) calculations, and efficient CO 2 activation are realized on as-established singleatom catalyst. An exceptional yield of CO (23.77 μmol g −1 h −1 ) and CH 4 production (4.98 μmol g −1 h −1 ) is acquired over optimized Bi 4 O 5 I 2 −Fe30 with 1.09 wt % of singleatom Fe, superior to Bi 4 O 5 I 2 , and most other reported photocatalysts. The work paves a insight into rational design of photocatalysts toward simultaneously facilitating carrier separation and CO 2 activation from the angle of atom single metal.

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confidence: 90%

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confidence: 99%

Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Jin

Zhou

et al. 2021

ACS Materials Lett.

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“…69,70 The weak absorption peaks at 1473 cm −1 and 1456 cm −1 were attributed to bidentate NO 3 − , while the absorption peak at 1577 cm −1 was attributed to monodentate NO 3 − . 71,72 The absorption peak observed at 1398 cm −1 was attributed to NO 2 − , indicating that HNO 2 was included in the product. 73 The absorption peak at 1304 cm −1 was attributed to HNO 3 .…”

Section: Resultsmentioning

confidence: 99%

Raspberry-like TiO₂ hollow spheres consisting of small nanocrystals towards efficient NO removal

Zhang

et al. 2022

Environ. Sci.: Nano

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“…Compared with precious metals, semimetal bismuth (Bi) has the characteristics of low price, easy availability, high abundance, and high electron transfer efficiency, which is expected to be an ideal substitute for precious metals. [ 30–34 ] In addition, Bi metal can be used as a good co‐catalyst to accelerate charge‐carrier separation of the coupled semiconductors. For example, Dong et al.…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis and DFT Calculations of Ti‐BiOCl/Bi Heterostructure Photocatalyst with Oxygen Vacancies and Bi Metal Induced by Ti Doping

Wen

et al. 2021

Part & Part Syst Charact

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Oxygen vacancies (OVs), doped Ti and plasmonic Bi metal are simultaneously introduced into BiOCl, which is prepared by a simple and one‐pot solvothermal method without any special reduction and high‐temperature processes. The microstructures, electronic structures, optical properties, and photodegradation activity are systematically discussed. Additionally, the amount of attached Bi metal and photocatalytic efficiency can be tuned via the content of doped Ti. The ultrahigh electron transfer tunnel between intermediate energy levels and attached Bi metals is confirmed through the close combination of active species detection experiments and density functional theory calculations. Further, the enhanced photocatalysis mechanism is discussed in detail. In the current study, the prospective on the preparation methods and modification strategies involving OVs, attached plasmonic Bi metal, and doped metal could be extended to other catalysts to regulate their interfacial properties and catalytic activity to deal with environmental problems.

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Synergistic integration of metallic Bi and defects on BiOI: Enhanced photocatalytic NO removal and conversion pathway

Cited by 87 publications

References 70 publications

Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Raspberry-like TiO₂ hollow spheres consisting of small nanocrystals towards efficient NO removal

One‐Pot Synthesis and DFT Calculations of Ti‐BiOCl/Bi Heterostructure Photocatalyst with Oxygen Vacancies and Bi Metal Induced by Ti Doping

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Synergistic integration of metallic Bi and defects on BiOI: Enhanced photocatalytic NO removal and conversion pathway

Cited by 87 publications

References 70 publications

Single-Atom Fe Triggers Superb CO2 Photoreduction on a Bismuth-Rich Catalyst

Single-Atom Fe Triggers Superb CO2 Photoreduction on a Bismuth-Rich Catalyst

Raspberry-like TiO2 hollow spheres consisting of small nanocrystals towards efficient NO removal

One‐Pot Synthesis and DFT Calculations of Ti‐BiOCl/Bi Heterostructure Photocatalyst with Oxygen Vacancies and Bi Metal Induced by Ti Doping

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Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Single-Atom Fe Triggers Superb CO₂ Photoreduction on a Bismuth-Rich Catalyst

Raspberry-like TiO₂ hollow spheres consisting of small nanocrystals towards efficient NO removal