Synthesis of 42-faceted bismuth vanadate microcrystals for enhanced photocatalytic activity

Zhai, Xueting; Li, Zhuoyao; Lu, Zichen; Wang, Guilin; Li, Ping; Gao, Yachen; Huang, Xiao; Huang, Wei; Uji‐i, Hiroshi; Lü, Gang

doi:10.1016/j.jcis.2019.02.008

Cited by 28 publications

(18 citation statements)

References 44 publications

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“…Synthesized quaternary facet junction semiconductors mainly contain TiO 2 , BiVO 4 , Cu 2 O, and Fe 3 O 4 (see Table 1). [92][93][94][95][96][97][98] For example, typical quaternary facet junctions [85] Copyright 2018, Royal Society of Chemistry. [86] Copyright 2015, American Chemical Society.…”

Section: Quaternary Junctionmentioning

confidence: 99%

Facet Junction Engineering for Photocatalysis: A Comprehensive Review on Elementary Knowledge, Facet‐Synergistic Mechanisms, Functional Modifications, and Future Perspectives

Sun

Yang

et al. 2021

Adv Funct Materials

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A facet junction (also called facet heterojunction or surface heterojunction) is defined as a complex polyhedral single crystal exposed to two, three, or four types of crystallographic planes, and is a promising platform for achieving multifunctional photocatalysis. Compared with simple polyhedral counterparts enclosed by the same crystallographic planes or conventional heterogeneous junctions, facet junctions have notable facet-crosslinking effects arising from different electronic structures of heterogeneous facets, which is beneficial for promoting the transfer and separation of photogenerated charge carriers in a single-crystalline semiconductor without the introduction of external species or interfaces. However, there are few specialized review articles on facet junction engineering of photocatalysts. Herein, an overview of facet junctionbased photocatalysts is provided based on the following aspects: elementary knowledge, microstructural features, intrinsic facet-synergistic mechanisms, functional modifications, enhanced photocatalytic mechanisms, challenges and issues, and directions for future investigations. This review article will act as a theoretical base for researchers who are focused on facet-dependent effects to design and fabricate new photocatalysts.

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Section: Quaternary Junctionmentioning

confidence: 99%

Facet Junction Engineering for Photocatalysis: A Comprehensive Review on Elementary Knowledge, Facet‐Synergistic Mechanisms, Functional Modifications, and Future Perspectives

Sun

Yang

et al. 2021

Adv Funct Materials

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“…These properties are highly dependent on the chemical composition, size, shape and surface state of the nanocrystals . Therefore, controlled synthesis of nanocrystals is becoming a hot topic in many fields, and lots of efforts have been made to precisely control the morphology and surface state of the nanocrystals . Among various shaped nanocrystals, the sheet‐like ones show promising properties and applications due to their structural simplicity, large surface area, easy charge separation, etc .…”

Section: Figurementioning

confidence: 99%

Crack Formation on Crystalline Bismuth Oxychloride Thin Square Sheets by Using a Wet‐Chemical Method

Wang

Zhou

et al. 2020

ChemNanoMat

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The morphology of nanocrystals is crucial in modulating their properties including optical, chemical and catalytic ones. For the intensively studied sheet-like structures, it is also important to engineer their detailed nanostructures on sheet surfaces. In this work, micron-sized bismuth oxychloride (BiOCl) thin square sheets in tetragonal matlockite-like phase and the corner-truncated ones were successfully synthesized by using a simple wet-chemical method. These square sheets could be partially etched, forming surface cracks with the size and density easily tuned. Two different types of cracks were observed on the surfaces of the corner un-truncated and truncated BiOCl square sheets. Surprisingly, radial cracks formed on the corner-truncated BiOCl sheets, which is attributed to the existence of physical stress during the etching and is highly related to the original nanostructure of the BiOCl sheets. This work provides a wet-chemical method for engineering surface cracks, especially radial cracks, on the surfaces of BiOCl nanosheets, which may be expanded to surface engineering of other nanosheets and will show a great potential in various fields. Nanocrystals, especially semiconductor ones, usually possess unique chemical, electrical, optical and magnetic properties compared to their bulk counterparts. [1][2][3][4][5][6] These properties are highly dependent on the chemical composition, size, shape and surface state of the nanocrystals. [3,[7][8][9][10][11] Therefore, controlled synthesis of nanocrystals is becoming a hot topic in many fields, and lots of efforts have been made to precisely control the morphology and surface state of the nanocrystals. [9,[12][13][14][15][16][17] Among various shaped nanocrystals, the sheet-like ones show promising properties and applications due to their structural simplicity, large surface area, easy charge separation, etc. [18][19][20][21] Sheet-like [a] R.

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“…Fujishima and Honda first realized the water splitting under solar illumination by using titanium dioxide (TiO2) as photocatalyst [6]. Since then, many semiconductor-based photocatalysts have been developed for photochemical reactions [7,8]. However, these semiconductor catalysts are usually limited by the large band gap (only ultraviolet and short wavelength visible light could be utilized) and the poor photo or chemical stability.…”

Section: Introductionmentioning

confidence: 99%

“…Except for polymerization, localized heating could also be used for triggering organic transformation of small molecules. Kuwahara and co-workers have reported a plasmonic heating-triggered dehydrogenation of 2,13-bis(aldehyde) [7]thiaheterohelicene molecules at the tip of a silver probe [23]. Third, SPs could also introduce the excitation of hot carriers (electrons and holes), which could be injected into the adsorbed molecules or closely contacted semiconductor and drive a redox reaction [24].…”

Section: Introductionmentioning

confidence: 99%

Plasmon-generated hot holes for chemical reactions

Zhang

Jia

et al. 2020

Nano Res.

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Plasmonic nanostructures have been widely used for photochemical conversions due to their unique and easy-tuning optical properties in visible and near-infrared range. Compared with the plasmon-generated hot electrons, the hot holes usually have a shorter lifetime, which makes them more difficult to drive redox reactions. This review focuses on the photochemistry driven by the plasmon-generated hot holes. First, we discuss the generation and energy distribution of the plasmon-generated hot carriers, especially hot holes. Then, the dynamics of the hot holes are discussed at the interface between plasmonic metal and semiconductor or adsorbed molecules. Afterwards, the utilization of these hot holes in redox reactions is reviewed on the plasmon-semiconductor heterostructures as well as on the surface of the molecule-adsorbed plasmonic metals. Finally, the remaining challenges and future perspectives in this field are presented. This review will be helpful for further improving the efficiency of the photochemical reactions involving the plasmon-generated hot holes and expanding the applications of these hot holes in varieties of chemical reactions, especially the ones with high conversion rate and selectivity.

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Synthesis of 42-faceted bismuth vanadate microcrystals for enhanced photocatalytic activity

Cited by 28 publications

References 44 publications

Facet Junction Engineering for Photocatalysis: A Comprehensive Review on Elementary Knowledge, Facet‐Synergistic Mechanisms, Functional Modifications, and Future Perspectives

Facet Junction Engineering for Photocatalysis: A Comprehensive Review on Elementary Knowledge, Facet‐Synergistic Mechanisms, Functional Modifications, and Future Perspectives

Crack Formation on Crystalline Bismuth Oxychloride Thin Square Sheets by Using a Wet‐Chemical Method

Plasmon-generated hot holes for chemical reactions

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