Enhanced visible light photocatalytic performance of Sb-doped (BiO)2CO3 nanoplates

Zhao, Hongbin; Tang, Jiale; Lai, Qingsong; Cheng, Gang; Liu, Yunling; Chen, Rong

doi:10.1016/j.catcom.2014.09.026

Cited by 40 publications

(9 citation statements)

References 35 publications

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“…Therefore, many strategies were exploited to enhance the light absorption and increase separation efficiency of photogenerated electron‐hole pairs. These strategies include combining with other narrow band gap semiconductors (e.g., Ag 2 O/Bi 2 O 2 CO 3 , BiVO 4 /Bi 2 O 2 CO 3 , Bi 2 O 2 CO 3 /Bi 2 MoO 6, N ‐BOC/GQDs), doping (e.g., CO 3 2− ‐doped, N‐doped,, Sb‐doped, C‐doped, I‐doped) and exposing facets . Although these methods could enhance the separation of photoinduced carriers to a certain extent.…”

Section: Figurementioning

confidence: 99%

Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment

et al. 2018

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We herein prepared defectiveB i 2 O 2 CO 3 microspheres via a simple nitric acidt reatment method. Upon generation from Bi 2 O 2 CO 3 ,e lectrons andh oles were superbly separatedw ith the existence of defects. Combined with the advantages of multiple scattering and reflection,alarge surface area and increasedr ange of visible-light absorption, the defective Bi 2 O 2 CO 3 dispalyed ah igh efficiency for the photodegradation of HCHO gases and methyl orange. The defective Bi 2 O 2 CO 3 also possessedasuperiors tability,w hichi si mportant for practical applications. Thisw ork opens up new opportunities for the design and fabrication of high-activity Bi-based photocatalysts for environmental protection.The authors declare no conflict of interest. Figure 4. (a) EISN yquist plots, (b) Transient photocurrent densities under visible-lightirradiation, (c) Photoluminescences pectra upon excitation at 300 nm, and (d) Nanosecond-levelt ime-resolved fluorescencespectrao fa ll the samples. (e) The proposed migrationm echanism of photoelectronsa nd holes.

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Section: Figurementioning

confidence: 99%

Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment

et al. 2018

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“…Re atoms in the triclinic 1T phase dimerize via forming diamond‐shaped‐chains, giving rise to superior anisotropic electron mobility ,. Furthermore, the layer‐layer coupling in ReS 2 is relatively weak, resulting from the extremely weak interlayer van der Waals interaction, which causes the bulk of ReS 2 to behave like electronically decoupled single layers, allowing ReS 2 to generate numerous trions (bounded two electrons and one hole) which can stably transfer to surfaces and participate in reduction reactions . Besides, introduction of Re defects in ReS 2 can further activate the basic planes with more active sites generated and photoabsorption enhanced .…”

Section: Introductionmentioning

confidence: 99%

Facile Construction of Defect‐rich Rhenium Disulfide/Graphite Carbon Nitride Heterojunction via Electrostatic Assembly for Fast Charge Separation and Photoactivity Enhancement

Liang

Deng

et al. 2019

ChemCatChem

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Graphite carbon nitride (CN) is one of the most researched visible light photocatalysts, but it still cannot be used practically because of its low photoactivity resulting mainly from rapid photogenerated charge recombination. To accelerate charge separation, CN was herein electrostatically assembled with ReS 2 , a two-dimensional semiconductor to construct heterojunction for the first time. The electrostatic and coordination interactions between CN and defect-rich ReS 2 make them close contact to form heterojunctions. The ReS 2 /CN heterojunction exhibits higher photocatalytic performance in pollutant degradation owing to faster generation of reactive oxygen species than CN, as well as increased visible and near-infrared light absorption because of strong photoabsorption of defect-rich ReS 2 . The accelerated reactive oxygen species generation for the heterojunction arises from accelerated charge separation, especially fast transfer of holes from CN to ReS 2 in assistance of interfacial electric field and great valance-band edge difference. This work provides a novel CN-based heterojunction for photoactivity improvement and illustrates significance of electrostatic attraction in fabricating heterojunctions.[a] Dr.

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“…This kind of compounds is known as a "sillén" phase, with the general formula [Bi 2 O 2 ] [X m ] (X = halogen or other ion group), alternating [Bi 2 O 2 ] 2+ and X n− sheets, which show very high stability at oxidizing environment [2]. Bi 2 O 2 CO 3 has been an excellent material with varied applications, especially for its remarkable optical and photocatalytic properties in reactions performed under UV and visible light [3][4][5][6][7][8]. Four essential nanostructures have been reported for the compound Bi 2 O 2 CO 3 : nanoparticles [9], nanotubes [10], nanoplates [11], and nanosheets [3].…”

Section: Introductionmentioning

confidence: 99%

“…Four essential nanostructures have been reported for the compound Bi 2 O 2 CO 3 : nanoparticles [9], nanotubes [10], nanoplates [11], and nanosheets [3]. On the other hand, microstructures have been reported with four basic types of morphologies [12]: sponge [5], rose [13], flower [14], and persimmon [15]. These variations in the basic nano and microstructures of Bi 2 O 2 CO 3 can be achieved according to the type of synthetic method used (solvothermal, hydrothermal, reflux, etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a New Aluminum-Doped Bismuth Subcarbonate

et al. 2019

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A new compound, Bi2O2CO3:Al, was synthesized by the coprecipitation method. The characterization was done by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), electronic scanning microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX). The characterization methods allowed to identify the Bi2O2CO3:Al compound, such as the Al-doped Bi2O2CO3 by XRD, the anionic part (CO32−) by FTIR, and the presence of aluminum in the compound by XPS and EDX. It was confirmed to have a nanostructure like a nanosheet and a microstructure that resembles a type sponge by SEM.

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Enhanced visible light photocatalytic performance of Sb-doped (BiO)2CO3 nanoplates

Cited by 40 publications

References 35 publications

Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment

Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment

Facile Construction of Defect‐rich Rhenium Disulfide/Graphite Carbon Nitride Heterojunction via Electrostatic Assembly for Fast Charge Separation and Photoactivity Enhancement

Synthesis and Characterization of a New Aluminum-Doped Bismuth Subcarbonate

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Enhanced visible light photocatalytic performance of Sb-doped (BiO)2CO3 nanoplates

Cited by 40 publications

References 35 publications

Enhanced Efficiency of Electron–Hole Separation in Bi2O2CO3 for Photocatalysis via Acid Treatment

Enhanced Efficiency of Electron–Hole Separation in Bi2O2CO3 for Photocatalysis via Acid Treatment

Facile Construction of Defect‐rich Rhenium Disulfide/Graphite Carbon Nitride Heterojunction via Electrostatic Assembly for Fast Charge Separation and Photoactivity Enhancement

Synthesis and Characterization of a New Aluminum-Doped Bismuth Subcarbonate

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Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment

Enhanced Efficiency of Electron–Hole Separation in Bi₂O₂CO₃ for Photocatalysis via Acid Treatment