The {0 0 1} facets-dependent superior photocatalytic activities of BiOCl nanosheets under visible light irradiation

Li, Yingjun; Wang, Qin; Liu, Baocang; Zhang, Jun

doi:10.1016/j.apsusc.2015.05.100

Cited by 55 publications

(8 citation statements)

References 34 publications

(35 reference statements)

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“…[44] The slitting peaks of Cl 2p centered at 198.1 eV and 199.7 eV were separately related to Cl 2p 3/2 and Cl 2p1/2 (Figure 3e), confirming the Cl-in BiOCl. [45] The F 1s XPS spectrum could be fitted well with the peak at 687.6 eV, which was attributed to -CF2 groups from the PFOTS layer (Figure 3f). [13] The XPS analysis confirmed that the superhydrophobic coating was composed of hydrophobic PFOTS layer and BiOCl nanaocrystals.…”

Section: Characterizationmentioning

confidence: 69%

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Jia

Luo

et al. 2019

Chemical Engineering Journal

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Preparation of superhydrophobic surfaces capable of recovering both the surface chemistry and hierarchical structure is still a challenge. In this work, all-damage-healable superhydrophobic surface was fabricated by assembly of superhydrophobic and hierarchical BiOCl on lignocellulosic substrates. Fibers having thermally responsive behavior, the main component of lignocellulosic materials, act as the underlying movable substrates. By a simple heating treatment, fibers can convey the undamaged neighbored superhydrophobic coating to the damaged area. In 2 this way, the loss of superhydrophobicity caused by rigorous mechanical destructions, even deep cuts of one hundred of micrometers wide, can be restored, mimicking the self-healing mechanism of human skin. Superior self-healing ability in surface chemistry was also confirmed. Meanwhile, the as-prepared superhydrophobic surfaces demonstrated reliable photocatalytic ability, a useful property for resisting organic contaminations. Interestingly, it was found that the photocatalytic activity can be enhanced by tuning the surface wettability. This work reported the first use of substrate material's inherently thermally responsive property to demonstrate self-healing superhydrophobic surface with photoctalyticity, which not only promotes the application of superhydrophobic materials in complex environment, but also opens up a new perspective in designing durable superhydrophobic materials.

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Section: Characterizationmentioning

confidence: 69%

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Jia

Luo

et al. 2019

Chemical Engineering Journal

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“…In addition to the above explanation, crystal facet of BiOCl is a major property in the visible light condition. The thickness of (110) and the intensity of (001) facet ratio are the most important factors to evaluate the visible light photocatalytic performance . We observed that the size of BiOCl platelet increased throughout (110) facet when we loaded ZnO onto BiOCl surface.…”

Section: Resultsmentioning

confidence: 88%

Synthesis, characterization, and photocatalytic activities of novel bentonite‐supported BiOCl–ZnO heterojunction (BiOCl–ZnO–Bentonite) under UV light

Vai̇zoğullar

2017

Asia-Pacific J Chem Eng

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Herein, we report the synthesis of a new composite catalyst immobilized on bentonite surface (BiOCl-ZnO-Bent). The samples were characterized using Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray Diffraction (XRD), Brunauer-Emmett-Teller, photoluminescence, and Diffuse Reflectance Spectra (UV-Vis DRS) analyses. BiOCl were observed as nanosheets, whereas ZnO particles were nearly spherical (SEM images). Bentonite clay was used to increase the surface area of the samples. Brunauer-Emmett-Teller surface area of Bi/Zn/Bent (50%) catalyst was lower than that of the ZnO-Bent and BiOCl-Bent. The prepared photocatalyst decomposed 10 mg L −1 of 3-chlorophenol (3-CP) within 180 min under UV light. Bi/Zn/ Bent (50%) catalyst showed the highest photocatalytic activity. A proposed degradation mechanism for Bi/Zn/Bent (50%) composite is also discussed.

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“…The growth of BiOI in the nanohybrids along the c -axis was limited, leading to decreased thickness and preferentially exposed {001} facets, which has been shown to improve photocatalytic activity of bismuth oxyhalides . It has been reported that a perpendicular internal electric field exists between the [Bi 2 O 2 ] 2+ layers and the halogen layer in bismuth oxyhalides (BiOX) and that the charge carriers separated and transferred more efficiently along the [001] direction in nanosheets due to this internal electric field. , Overall, the increased crystallinity along the c -axis shown by the dominant (001) and (004) reflection peaks observed in XRD suggests a uniform orientation of the internal electric field toward the particle surface.…”

Section: Discussionmentioning

confidence: 99%

Templating Unidirectional Bismuth Oxyiodide Crystal Growth with Layered Silicates for Enhanced Photocatalysis

Liu¹,

Jatav²,

Wessel³

et al. 2022

J. Phys. Chem. C

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The crystalline growth of the layered photocatalyst bismuth oxyiodide (BiOI) was restricted by a nanoscopic layered silicate clay template, leading to reduced particle size, altered surface chemistry, and improved water dispersibility. The reduced particle size and dominant {001} facets aided photogenerated charge separation along the axis of the internal electric field of BiOI, leading to 8.2× enhancement in the apparent quantum efficiency for MO degradation and 3.7× enhancement in the photocurrent conversion efficiency over those of control BiOI. Furthermore, successful templating of BiOI growth on laponite was found to be dependent on the presence of both polyvinylpyrrolidone and mannitol as well as a a pH lower than 3, a finding supported by all-atom molecular dynamics simulations. This study will guide future efforts at templated growth of photocatalysts at interfaces, particularly where control over crystal habit is essential to enhanced performance.

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The {0 0 1} facets-dependent superior photocatalytic activities of BiOCl nanosheets under visible light irradiation

Cited by 55 publications

References 34 publications

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Synthesis, characterization, and photocatalytic activities of novel bentonite‐supported BiOCl–ZnO heterojunction (BiOCl–ZnO–Bentonite) under UV light

Templating Unidirectional Bismuth Oxyiodide Crystal Growth with Layered Silicates for Enhanced Photocatalysis

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