Synthesis and Facet-Dependent Photoreactivity of BiOCl Single-Crystalline Nanosheets

Jiang, Jing; Zhao, Kun; Xiao, Xiaoyi; Zhang, Lizhi

doi:10.1021/ja210484t

Cited by 1,336 publications

(948 citation statements)

References 25 publications

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“…13 Although experimental and theoretical explorations about BiOX have been extensively done,most of the reports focused on the photocatalytic properties. [14][15][16] In-depth studies on other aspects are still lacking, such as electronic structure designs of BiOX with a few layers. As is known to us all, strain is an effective method to tune the band structure for material design and improving performance.…”

Section: Introductionmentioning

confidence: 99%

Indirect-Direct Band Transformation of Few-Layer BiOCl under Biaxial Strain

Hao

Zhang

et al. 2016

J. Phys. Chem. C

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Being a new two-dimensional layered compounds, the tunable indirect-direct band transformation of BiOCl with different layers can be realized by introducing the biaxial tensile or compressive strains. The band structure and stability of BiOCl with different layers are first researched to clarify the influence of layer numbers. A phase transformation of bilayer BiOCl and metallic characteristic for all are observed under large tensile and compressive strains, respectively. In addition, bond length, interlayer spacing, and band decomposed charge density are calculated to analyze the mechanism behind these phenomena. The results indicate that the band structure transformation is primarily related to the competitions between two kinds of intralayer and interlayer Bi-O bonds and hybridizations between atoms under strains.

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Section: Introductionmentioning

confidence: 99%

Indirect-Direct Band Transformation of Few-Layer BiOCl under Biaxial Strain

Hao

Zhang

et al. 2016

J. Phys. Chem. C

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“…[16] Furthermore, the absorbance can be improved and the recombination of photogenerated electronÀhole pairs can be reduced by adjusting the morphology by the addition of polyvinylpyrrolidone (PVP) as a surfactant.…”

Section: Introductionmentioning

confidence: 99%

Size-controlled BiOCl–RGO composites having enhanced photodegradative properties

Kang

Pawar

Pyo

et al. 2015

Journal of Experimental Nanoscience

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Visible light-active bismuth oxychlorideÀreduced graphene oxide (BiOClÀRGO) composite photocatalysts were synthesised using a hydrothermal method at low temperature, and at a low cost. This approach reduced the recombination of electronÀhole pairs and thereby provided more efficient photocatalysts. The size of BiOCl structure was controlled by polyvinylpyrrolidone (PVP) addition. Furthermore, formation of nanosized BiOCl sheets and BiOClÀRGO composites were confirmed by X-ray diffraction, X-ray photoelectron spectroscopy, fieldemission scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. Fabricated BiOClÀRGO composite with PVP exhibited better photocatalytic activity than pure BiOCl grown with and without PVP towards degradation of Rhodamine B (RhB). It was found that the composite photocatalyst degrades RhB completely within 310 min as compared with several hours for pure BiOCl. The improved photocatalytic performance of BiOClÀRGO composite was attributed to its high specific surface area (22.074 m 2 g ¡1 and existence of polar surfaces, compared with 9.831 m 2 g ¡1 for pure BiOCl). The analyses indicated that RGO helped to reduce recombination losses and improve electron transport. It also showed that presence of polar surfaces improved photocatalytic activity of BiOCl. Hence, BiOClÀRGO composite is a promising catalyst for the degradation of organic pollutants under visible light and could be used in applications such as water purification devices.

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“…As mentioned in Section 4, the UV‐excitable BiOCl nanosheets dominated with {001} facets (BOC‐001) possessed higher photocatalytic activity than BOC‐010, owing to the internal electric field along [001] direction 18. However, the situation totally changed when the g‐C 3 N 4 nanoparticles – a visible‐light semiconductor sensitizer – were loaded on BOC‐001 and BOC‐010 nanosheets.…”

Section: Facet Engineering For Multi‐component Photocatalytic Materialsmentioning

confidence: 99%

Facet‐Engineered Surface and Interface Design of Photocatalytic Materials

et al. 2016

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The facet‐engineered surface and interface design for photocatalytic materials has been proven as a versatile approach to enhance their photocatalytic performance. This review article encompasses some recent advances in the facet engineering that has been performed to control the surface of mono‐component semiconductor systems and to design the surface and interface structures of multi‐component heterostructures toward photocatalytic applications. The review begins with some key points which should receive attention in the facet engineering on photocatalytic materials. We then discuss the synthetic approaches to achieve the facet control associated with the surface and interface design. In the following section, the facet‐engineered surface design on mono‐component photocatalytic materials is introduced, which forms a basis for the discussion on more complex systems. Subsequently, we elucidate the facet‐engineered surface and interface design of multi‐component photocatalytic materials. Finally, the existing challenges and future prospects are discussed.

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Synthesis and Facet-Dependent Photoreactivity of BiOCl Single-Crystalline Nanosheets

Cited by 1,336 publications

References 25 publications

Indirect-Direct Band Transformation of Few-Layer BiOCl under Biaxial Strain

Indirect-Direct Band Transformation of Few-Layer BiOCl under Biaxial Strain

Size-controlled BiOCl–RGO composites having enhanced photodegradative properties

Facet‐Engineered Surface and Interface Design of Photocatalytic Materials

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