Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process

Jia, Meilin; Hu, Xiaolong; Wang, Shulian; Huang, Yuewang; Song, Lirong

doi:10.1016/j.jes.2014.09.045

Cited by 33 publications

(9 citation statements)

References 32 publications

(40 reference statements)

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“…In water solvent, owing to the smallest viscosity among the three solvents, the reaction ions have the highest diffusion rate and supersaturation during the hydrothermal process, leading to the nanosheets anisotropic growth and becoming thick and large [31]. In addition, the lack of an alkyl chain in water may make it difficult to form 3D particles [32]. As a result, a nanosheets structure is developed in water.…”

Section: Sem Analysismentioning

confidence: 99%

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

Gao

Fan

et al. 2015

Applied Surface Science

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Section: Sem Analysismentioning

confidence: 99%

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

Gao

Fan

et al. 2015

Applied Surface Science

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“…After passing this level, the excessive catalyst particles were suspended in the solution surfaces and thus affected the light scattering and transmittance. Moreover, the discontinuous photons on catalyst surfaces may have accelerated the recombination of electrons and holes . Thus, further addition of catalyst after passing this level led to the reduction of photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Synthesis of BiOCl/BiOBr Composites with Improved Visible-Light Photocatalytic Activity

Zhang

Yang

2015

Ind. Eng. Chem. Res.

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BiOCl/BiOBr composite photocatalysts with different Cl-to-Br molar ratios were synthesized by a simple microwave-assisted coprecipitation (MWAC) method.The structures, morphology and photocatalytic properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, and UV-vis absorption spectrometry. The photocatalytic activities of these BiOCl/BiOBr composites were evaluated by their ability in degradation of Rhodamine B under visible-light irradiation. Results reveal that the MWAC-synthesized 1:5BiOCl/BiOBr composite is much more active than that synthesized by the hydrothermal method. The former composite obviously maintains the high photocatalytic activity after five cycles and thus is the best one among all these photocatalysts. The visible-light photocatalytic activity enhancement of BiOCl/BiOBr composites could be attributed to their strong absorption in the visible region and the low recombination rate of electron-hole pairs. Among different scavengers, the main active species during the photocatalytic process are h + and •O 2− .The possible photocatalytic mechanism was proposed based on the experimental results.

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“…[7][8][9][10][11][12][13][14] If sulfur-containing ions are intercalated between the [Bi 2 O 2 ] 2 + layers, bismuth oxysulfides are obtained, such as Bi 2 O 2 S, [15][16][17] Bi 2 OS 2 , [18] Bi 9 O 7.5 S 6 , [19,20] Bi 4 O 4 S 3 , [17] and Bi 3 O 2 S 3 . [21] These bismuth oxysulfide compounds usually possess high chemical and photo stability, making them promising in many applications. In addition, variation of the S-related anions or layers in the bismuth oxysulfide crystals may help to tune their band gap, endowing them with wide applications in the fields of catalysis, energy, etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Thin Bi₉O_7.5S₆ Nanosheets for Improved Photodetection in a Wide Wavelength Range

Wang

Yue

et al. 2021

Chemistry An Asian Journal

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Bismuth-based compounds possess layered structures with a variety of stacking modes, endowing the compounds with diverse properties. As one type of bismuth oxysulfides, Bi 9 O 7.5 S 6 nanocrystals has great applications in photodetection; however, the responsivity of bulky Bi 9 O 7.5 S 6 is limited due to the poor charge separation. Herein, singlecrystalline Bi 9 O 7.5 S 6 thin nanosheets are successfully synthesized by using a solvothermal method. The thickness of the obtained Bi 9 O 7.5 S 6 nanosheets is down to 15 nm and can be easily tuned by varying the reaction period. Moreover, the Bi 9 O 7.5 S 6 nanosheets show strong light absorption in the visible and near infrared range, making it a promising candidate in optoelectronics. As a demonstration, the thin Bi 9 O 7.5 S 6 nanosheets are used as active layer in an optoelectronic device, which exhibits sensitive photoelectric response to light in a wide range of 400-800 nm. The responsivity of the device reaches up to 1140 μA W À 1 , and the performance of the device is stable after long-period illumination. This work demonstrates a great potential of the thin Bi 9 O 7.5 S 6 nanosheets in optoelectronic devices, and these nanosheets may also be extended to various optoelectronic applications.

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Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process

Cited by 33 publications

References 32 publications

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

Microwave-Assisted Synthesis of BiOCl/BiOBr Composites with Improved Visible-Light Photocatalytic Activity

Synthesis of Thin Bi₉O_7.5S₆ Nanosheets for Improved Photodetection in a Wide Wavelength Range

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Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process

Cited by 33 publications

References 32 publications

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

A facile approach for the tunable fabrication of BiOBr photocatalysts with high activity and stability

Microwave-Assisted Synthesis of BiOCl/BiOBr Composites with Improved Visible-Light Photocatalytic Activity

Synthesis of Thin Bi9O7.5S6 Nanosheets for Improved Photodetection in a Wide Wavelength Range

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Synthesis of Thin Bi₉O_7.5S₆ Nanosheets for Improved Photodetection in a Wide Wavelength Range