Novel Bi2S3-sensitized BiOCl with highly visible light photocatalytic activity for the removal of rhodamine B

Cao, Jing; Xu, Benyan; Lin, Haili; Luo, Bangde; Chen, Shifu

doi:10.1016/j.catcom.2012.05.025

Cited by 173 publications

(94 citation statements)

References 32 publications

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“…Accordingly, it can be inferred that lower fluorescence emission intensity indicates lower Figure 6 shows the optical absorption properties of the as-prepared samples, which were measured by using the UV-vis diffuse reflectance spectra (DRS). As is evident in Figure 6, the optical absorption band of pure BiOCl presents a steep absorption edge in the UV region of 368 nm, agreeing well with previous reports [12,13]. Compared with pure BiOCl, the N 0.45 B 0.55 nanocomposites extend their light absorption to visible light region.…”

Section: Bet Surface Areasupporting

confidence: 90%

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Jia

Long

et al. 2017

Crystals

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Abstract:A novel ultrathin g-C 3 N 4 nanosheet-modified BiOCl hierarchical flower-like plate heterostructure (abbreviated as BC/CN) was constructed via a thermal polymerization of urea precursor followed with hydrolysis route. The as-prepared samples were well characterized by various analytical techniques. The morphological observation showed that hierarchical flower-like BiOCl nanoplates were discretely anchored on the surface of ultra-thin C 3 N 4 nanosheets. The photocatalytic performance of the as-prepared photocatalysts was evaluated by degradation of methylene blue (MB) under visible-light irradiation. The results showed that BC/CN photocatalyst exhibited enhanced photostability and photocatalytic performance in the degradation process. On the basis of experimental results and the analysis of band energy structure, it could be inferred that the enhanced photocatalytic performance of BC/CN photocatalyst was intimately related with the hybridization of hierarchical flower-like BiOCl nanoplates with ultrathin g-C 3 N 4 nanosheets, which provided good adsorptive capacity, extended light absorption, suppressed the recombination of photo-generated electron-hole pairs, and facilitated charge transfer efficiently.

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Section: Bet Surface Areasupporting

confidence: 90%

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Jia

Long

et al. 2017

Crystals

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“…As shown in Figure 9, both AO and BQ cause a strong suppression on the photodegradation process of RhB solution while ME exhibited a relatively weak effect. The above results reveals that the reactive species of h + and •O 2 − played a more significant role than •OH for the photodegradation of RhB, which is similar to the previous studies [42,43]. Because the stability has always been a critical concern for an excellent photocatalyst, it is essential to investigate the stability and repeatability of 3D hierarchical Bi 2 S 3 architectures in the photodegradation of RhB solution.…”

Section: Photocatalytic Activitiessupporting

confidence: 87%

Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets

Jia

Long

et al. 2016

Crystals

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3D hierarchical Bi 2 S 3 architectures have been successfully synthesized via a simple and effective hydrothermal process. The as-prepared Bi 2 S 3 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption isotherms, and UV-vis diffuse reflectance spectrum (DRS). The observation of field emission scanning electron microscope (FESEM) images showed that numerous nanoplatelets are randomly arranged and interconnected with each other, which are assembled into 3D hierarchical Bi 2 S 3 architectures. The photocatalytic activity of the as-prepared Bi 2 S 3 samples was evaluated by the degradation of Rhodamine B (RhB) under visible light irradiation. The effect of hydrothermal temperature, reaction time, pH value and shape on the photocatalytic efficiency of the as-prepared Bi 2 S 3 samples was investigated. The results showed that 3D hierarchical Bi 2 S 3 architectures prepared at 165 • C for 12 h at a pH of 2.4 exhibits high photocatalytic efficiency, which could be ascribed to the synergetic effect of the shape, surface area, crystallinity, band gap and crystalline size.

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“…Under visible-light (λ>400 nm), Bi 2 S 3 with narrow E g will be activated while BiOCl with large E g will be not. [41]. Thus the recombination rate of photo-generated electrons and holes was decreased largely.…”

Section: Resultsmentioning

confidence: 87%

“…Among them, n is determined by the type of optical transition of a semiconductor (n=1 for direct transition and n=4 for indirect transition). For BiOCl and Bi 2 S 3 , the values of n are 4 and 1, respectively [41]. Thus, the E g estimated from the intercept of the tangents to the plot of (αhυ) 1/2 versus hυ was 3.20 eV for BiOCl while the E g from the plot of (αhυ) 2 versus hυ was 1.46 eV for Bi 2 S 3 and 1.68, 2.0, 2.31, 2.81, 3.05 for C1, C2, C3, C4, C5 hetero-structure composites, respectively (Figs.…”

Section: Resultsmentioning

confidence: 99%

“…Very recently, BiOCl/Bi 2 S 3 hetero-structures have been fabricated through ion exchange strategies and a degradation of methyl orange, RhB and 2,4-dichlorophenol (2,4-DCP) has been carried out under the visible light irradiation. In all of these two-step synthetic approaches, BiOCl has been produced firstly and transformed to the BiOCl/Bi 2 S 3 composite by ion exchange in the presence of a suitable sulfur source [40,41]. Herein, we report one-pot, surfactant free, large scale and controlled synthesis of uniform and novel architectures of BiOCl/Bi 2 S 3 hetero-structures through a facile solvothermal method.…”

Section: Introductionmentioning

confidence: 99%

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Atypical BiOCl/Bi2S3 hetero-structures exhibiting remarkable photo-catalyst response

Tanveer

Qadeer

et al. 2017

Sci. China Mater.

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Novel Bi2S3-sensitized BiOCl with highly visible light photocatalytic activity for the removal of rhodamine B

Cited by 173 publications

References 32 publications

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets

Atypical BiOCl/Bi2S3 hetero-structures exhibiting remarkable photo-catalyst response

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