Single-crystalline Bi5O7NO3 nanofibers: Hydrothermal synthesis, characterization, growth mechanism, and photocatalytic properties

Yu, Shujie; Zhang, Gaoke; Gao, Yixiao; Huang, Baibiao

doi:10.1016/j.jcis.2010.10.012

Cited by 35 publications

(16 citation statements)

References 56 publications

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“…The carbon peak comes from the adventitious carbon on the surface of the sample. After fitting, the two strong peaks at the Bi region (Figure 2 b) at 158.8 and 164.2 eV are respectively assigned to Bi 4f 7/2 and Bi 4f 5/2 , which corresponded to Bi 3+ according to the previous results 21–23. The O 1s core level spectrum (Figure 2 c) can be fitted well with two peaks at 530.0 and 531.7 eV.…”

Section: Resultssupporting

confidence: 69%

“…After fitting, the two strong peaks at the Bi region (Figure 2 b) at 158.8 and 164.2 eV are respectively assigned to Bi 4f 7/2 and Bi 4f 5/2 , which corresponded to Bi 3 + according to the previous results. [21][22][23] The O 1s core level spectrum (Figure 2 c) can be fitted well with two peaks at 530.0 and 531.7 eV. The sharper peak at 530.0 eV belongs to O 2À from a bismuth-oxygen bond in BiOCl.…”

Section: Resultsmentioning

confidence: 64%

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Controlled Synthesis of BiOCl Hierarchical Self‐Assemblies with Highly Efficient Photocatalytic Properties

Peng

Zhu

et al. 2012

Chemistry An Asian Journal

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Herein, we report the controlled synthesis of bismuth oxychloride (BiOCl) hierarchical self-assemblies under hydrothermal conditions and demonstrate their high photocatalytic properties. An interesting morphological evolution from microplates to nanoplate assemblies with microsphere-, microdisk-, and microflower-like structures is investigated by adjusting the amounts of surfactant poly(vinyl pyrrolidone) (PVP). It has been found that three types of three-dimensional (3D) BiOCl micromaterials are formed layer-by-layer from a large number of interconnected 2D nanoplates with a mean side length of about 20 nm. A possible crystal growth and formation mechanism is proposed as a plausible mechanistic interpretation for the self-assembly of nanoplates into the observed microstructures that is based on the detailed experiments. Furthermore, the photocatalytic properties of the obtained samples are investigated by the photodegradation analysis of Rhodamine B and methylene orange (RhB and MO) dyes, thus indicating that the microspherelike BiOCl hierarchical structure has a higher photocatalytic activity than the microdisk-like and microflower-like BiOCl structures, owing to its novel structure with a high surface area.[a] Dr.

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Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 64%

Controlled Synthesis of BiOCl Hierarchical Self‐Assemblies with Highly Efficient Photocatalytic Properties

Peng

Zhu

et al. 2012

Chemistry An Asian Journal

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“…In the recent years, Kudo et al discovered that bismuth-based semiconductors could have high photocatalytic activities since the Bi 6s and O 2p levels form largely dispersed hybridized valence bands [8]. So far, researchers have investigated the photocatalytic activities of various bismuth-based compounds such as BiPO 4 [9], (BiO) 2 CO 3 [10,11], Bi 2 S 3 [12], Bi 5 O 7 NO 3 [13], Bi 2 O 3 [14], Bi 2-x Sb x WO 6 [15], BiOCl [16,17], BiO 1.84 H 0.08 [18], CaBiO 2 Cl [19], BiVO 4 [20], and Bi 2 WO 6 [21].…”

Section: Introductionmentioning

confidence: 99%

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

et al. 2015

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BiOCl was synthesized using bismuth nitrate pentahydrate and sodium chloride via ball milling for 15 (B15), 30 (B30), and 60 (B60) min. Scanning electron microscopy studies revealed the isolated nanoplate morphology for B15, an aggregated structure composed of nanoplates for B30, and a special three-dimensional morphology for B60. The X-ray diffraction patterns showed the purity and crystallinity of the products improved by increasing the milling time. Fourier transform infrared spectroscopy, photoluminescence spectroscopy, and nitrogen adsorption-desorption analysis using the BrunauerEmmett-Teller technique were also used to study the products. Diffuse reflectance spectroscopy studies revealed the band gap value of 3.27 eV for B30, B60 and a narrow band gap of 2.77 eV for B15. Photocatalytic studies toward rhodamine B degradation confirmed that the narrow band gap B15 was a stable and recyclable photocatalyst with the highest activity among the products. The effects of factors such as oxygen vacancies, surface defects, morphology, and band gap of products on the photocatalytic activities were studied. Comparison of rhodamine B and pentachlorophenol photodegradation processes revealed that both direct and indirect (dye-photosensitized) photocatalytic pathways could influence the removal results. Graphical abstract

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“…The band gap of BiOX is strictly dependent on the halide participated in its composition and ranges from 3.19-3.44, 2.64-2.91 and 1.77-1.92 eV, respectively for Cl, Br and I [2]. In this field, so far, researchers have also investigated photocatalytic activities of various bismuth compounds such as: Ag/AgI/BiOI [3], Bi2S3 [4], Bi2Ti2O7 [5], N-doped (BiO)2CO3 [6], Bi5O7NO3 [7], BiOI [8], Bi2O3, BiVO4, Bi2WO6 [9,10], BiNbO4 and BiTaO4 [11] and Black BiOCl [12]. Among different ternary bismuth based photocatalysts, bismuth oxyhalides (BiOX) have captivated the interest of researchers enormously.…”

Section: Introductionmentioning

confidence: 99%

Microwave Assisted Preparation of Bismuth Oxyhalide Microflowers Comprised of Nanolayers and Investigation of its Photocatalytic Activity

Tadjarodi

Moghaddasi

Bijanzad

et al. 2014

Proceedings of the 18th International Electronic Conference on Synthetic Organic Chemistry

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Today, bismuth based oxides, which have already been used as pigments and catalysts, are showing excellent photocatalytic performances. In this field, ternary bismuth oxyhalides (BiOX) are flourishing promptly. Bismuth nitrate pentahydrate and sodium chloride were utilized to fabricate the product in a domestic microwave instrument. The SEM images showed the microflowers which were comprised of nanolayers with the thickness of about 29 nm. From energy dispersive X-ray analysis, its empirical formula was estimated to be Bi2.27O9.31Cl. Fourier transform infrared spectroscopy showed that the peak at 567 cm -1 was attributed to the stretching vibration of Bi-O. Diffuse reflectance spectrum showed band gap energy of 3.5 eV for this compound. It showed a high photocatalytic performance in photodegradation of Rhodamine B.

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Single-crystalline Bi5O7NO3 nanofibers: Hydrothermal synthesis, characterization, growth mechanism, and photocatalytic properties

Cited by 35 publications

References 56 publications

Controlled Synthesis of BiOCl Hierarchical Self‐Assemblies with Highly Efficient Photocatalytic Properties

Controlled Synthesis of BiOCl Hierarchical Self‐Assemblies with Highly Efficient Photocatalytic Properties

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

Microwave Assisted Preparation of Bismuth Oxyhalide Microflowers Comprised of Nanolayers and Investigation of its Photocatalytic Activity

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