Synthesis and Photocatalytic Performance of Bi12O17Cl2 Semiconductors Calcined at Different Temperatures

Wu, Feiyan; Chang, Fei; Zheng, Jiaojiao; Jiao, Mingzhi; Deng, Baoqing; Hu, Xuefeng; Liu, Xiaoqi

doi:10.1007/s10904-017-0731-5

Cited by 30 publications

(5 citation statements)

References 38 publications

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“…As shown in Fig. 6(b), the band gap energy was 3.25, 2.20, and 2.39 eV for BiOCl, Bi12O17Cl2, and the composite respectively, which was similar to previous reports [47,48]. These results indicate that the Bi-OCl-Bi12O17Cl2 composite had a matching energy band position, which was conducive to photocatalytic degradation of organic pollutants under visible-light illumination.…”

Section: Uv-vis Analysissupporting

confidence: 87%

BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

Long

Xian

Zhang

et al. 2020

Chinese Journal of Catalysis

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Section: Uv-vis Analysissupporting

confidence: 87%

BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

Long

Xian

Zhang

et al. 2020

Chinese Journal of Catalysis

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“…These reactive species are generated through oxidation reactions (in VB) and reduction (in CB), caused by the interaction of the e − /h + pair with electron acceptors/ donors (e − ) (most commonly H 2 O, O 2 , and OH. − ) dissolved during the photocatalysis process [87,88] These reactions are initiated due to the activation of β-Ag 2 MoO 4 microcrystals, caused by the irradiation of different UV and visible light, which stops this material was sufficient to promote the excitation of e − from BV (by presenting an E > E gap value of the synthesizing materials) to CB, generating a gap or hole (h + ) in VB. This mechanism is known as e − /h + pair formation.…”

Section: Photocatalytic Assays Analysismentioning

confidence: 99%

Experimental and Theoretical Correlation of Modulated Architectures of β-Ag2MoO4 Microcrystals: Effect of Different Synthesis Routes on the Morphology, Optical, Colorimetric, and Photocatalytic Properties

Lopes

Nolêto

Vieira

et al. 2022

J Inorg Organomet Polym

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In this paper, the effect of different synthesis methods, such as controlled precipitation (CP), sonochemical (SC), hot solution ion injection with fast cooling, and conventional hydrothermal (CH) in obtaining beta-disilver molybdate (β-Ag 2 MoO 4 ) are explained in details. X-ray diffraction patterns, Rietveld refinement data, cluster modeling, micro-Raman, and Fourier transform infrared spectroscopies confirmed that all β-Ag 2 MoO 4 crystals have a spinel-like cubic structure, space group (Fd 3 m), and symmetry point group (O 7 h ). Field emission scanning electron microscopy (FE-SEM) images showed that through different synthetic routes, it is possible to obtain monophasic crystals, such as regular/irregular polyhedrons (cubes, cuboctahedron, trapezohedron, rhombic dodecahedron), potatoes, and non-uniform. The crystal shape observed experimentally was modeled based on Rietveld refinement data and FE-SEM images obtained by KrystalShaper. First-principles quantum mechanical calculations based on density functional theory were employed to modulate the surfaces of the material and to obtain their surface energy (E surf ) values. From these E surf values in association with the Wulff construction, the evolution of the crystals shape was achieved correlating with the experimental results when different synthesis methods are used. Ultraviolet-Visible (UV-Vis) spectroscopy measurements in absorbance mode showed three main absorptions (280, 310, and 340 nm), while the UV-Vis analyses in diffuse reflectance mode showed a tail of energy absorption in the UV spectrum range (3.25 eV and 3.3 eV). The quantitative data from the colorimetric analysis indicated that the β-Ag 2 MoO 4 crystals are desirable for developing inorganic pigments with a beige to brown shade. Photocatalytic assays were performed using four lamps: UV-C, UV-B, UV-A, and visible light. The β-Ag 2 MoO 4 crystals prepared by the CP method showed a higher degradation rate at 85.12% for the rhodamine B dye solution under 240 min exposure to UV-C light.

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“…Bi 12 O 15 Cl 6, [60] Bi 12 O 17 Cl 2, [60][61] Bi 3 O 4 Br, [62] Bi 24 O 31 Br 10, [63] Bi 5 O 7 I, [64] Bi 4 O 5 I 2 [65] have been reported. In addition, the well-dispersed Bi 6 s orbital increases the mobility of photogenerated charge carriers and decreases the band gap.…”

Section: Visual Lightmentioning

confidence: 99%

“…Wu reported that an excellent oxygen‐rich Bi 12 O 17 Cl 2 nanobelts photocatalyst with a band gap of 2.07 eV was able to degrade more than 95 % Bisphenol A (BPA) within 120 min under visible light irradiation, which is nine times higher than that of BiOCl and TiO 2 (Figure 3c and 3d) [59] . Currently, several other Bi x O y X z photocatalysts such as Bi 12 O 15 Cl 6, [60] Bi 12 O 17 Cl 2, [60–61] Bi 3 O 4 Br, [62] Bi 24 O 31 Br 10, [63] Bi 5 O 7 I, [64] Bi 4 O 5 I 2 [65] have been reported.…”

Section: Applications Of Bismuthmentioning

confidence: 99%

Bismuth, a Previously Less‐studied Element, Is Bursting into New Hotspots

et al. 2022

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Bismuth (Bi) is a particular element with many distinctive properties such as low toxicity or nontoxicity, high specific gravity, photoluminescence, photoelectronic and photovoltaic effects, strong oxidation ability, water insolubility, etc. These distinctive properties help to boost various applications of Bi. The recent decades have witnessed a dramatic increase in the application research of Bi-based materials, especially on photocatalysis. This paper begins with an introduction to the history of Bi, followed by a summary of its distinctive properties, and then provides a comprehensive overview of its applications in photocatalysis, sensing, medicine, and diagnosis and treatments, with a particular focus on near-infrared photocatalysis, flexible wearable sensor, in vivo detection and therapeutics. Finally, the main challenges and development prospects of the Bi-based materials are introduced. With the development trends of Bi research discussed, this paper is aimed at improving the knowledge of Bi and arising the research interest of Bi in the hope of extending the applications of Bi.

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Synthesis and Photocatalytic Performance of Bi12O17Cl2 Semiconductors Calcined at Different Temperatures

Cited by 30 publications

References 38 publications

BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

Experimental and Theoretical Correlation of Modulated Architectures of β-Ag2MoO4 Microcrystals: Effect of Different Synthesis Routes on the Morphology, Optical, Colorimetric, and Photocatalytic Properties

Bismuth, a Previously Less‐studied Element, Is Bursting into New Hotspots

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