Solvent‐Free Synthesis of Bismuth Oxychloride Microflower/Nanosheet Homojunctions for Photoactivity Enhancement

Yao, Hanyu; Li, Haiping; Hu, Tingxia; Hou, Wanguo

doi:10.1002/cctc.201800357

Cited by 16 publications

(4 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, Liu and co‐workers fabricated teeth‐like structures on {100} and {010} facets of BiOCl nanosheets via a selective etching process in presence of triethanolamine (TEA) . However, there has been still limited report on controlling the detailed morphology on BiOCl sheet surfaces, possibly due to the difficulty in utilizing this complex structure …”

Section: Figurementioning

confidence: 69%

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

Wang

Zhou

et al. 2020

ChemNanoMat

View full text Add to dashboard Cite

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.

show abstract

Section: Figurementioning

confidence: 69%

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

Wang

Zhou

et al. 2020

ChemNanoMat

View full text Add to dashboard Cite

show abstract

“…To further study the chemical state of the surface element, the corresponding core‐level spectra were supplied. Especially, the Fe 2p core‐level spectrum of BFOH‐2 is very different from that of Fe 3 O 4 , and the peaks at 725.1 eV and 711.3 eV are attributed to the Fe 2p 1/2 and Fe 2p 3/2 of Fe 3+ in β‐FeOOH (Figure B), and the peaks at 532.8 eV, 530.7 eV, and 527.9 eV (Figure C) are attributed to the O 1 s in BiOCl (532.8 eV and 527.9 eV) and β‐FeOOH (530.7 eV) . Furthermore, The core‐level spectra of Bi and Cl elements were shown in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

A BiOCl/β-FeOOH heterojunction for HER photocatalytic performance under visible-light illumination

Wang

et al. 2019

Int J Energy Res

View full text Add to dashboard Cite

Summary β‐iron oxide hydroxide (β‐FeOOH) had been proven to be an effective co‐catalyst during H2 evolution reaction (HER) process. In this research, a BiOCl/β‐FeOOH heterojunction was successfully synthesized by a solid‐state doping method. Then, the structure, composition, and photo‐electrochemical properties of the prepared photocatalysts were studied. For the superior HER photocatalytic activity of ultrasmall β‐FeOOH nanoparticles (NPs) and the formation of the BiOCl/β‐FeOOH heterojunction, this heterojunction photocatalyst exhibited very superior photocatalytic performance in the HER process. Especially, when the amount of incorporated β‐FeOOH NPs was appropriate, the BFOH‐2 possessed the highest photocatalytic activity in HER process, and the HER rate was about 16.64 mmol·g−1·h−1 during illuminated time of 6 hours under visible light. When appropriate, ultrasmall β‐FeOOH NPs were implanted into the structure of BiOCl, the BiOCl/β‐FeOOH heterojunction interfaces would form for the existence of interfacial interactions. Therefore, this BiOCl/β‐FeOOH heterojunction exhibited superior visible‐light response, fast photo‐carrier migration, and high‐efficient separation of photo‐carriers, so that the BFOH‐2 heterojunction possessed high‐efficient hydrogen evolution reaction (HER) photocatalytic activity.

show abstract

“…From the Bi 4f spectra of pure BiOCl (Figure 5b), the peaks of Bi 4f 5/2 and Bi 4f 7/2 at 164.9 and 159.6 eV indicate bismuth existed in the form of Bi 3+ , respectively [13,34]. Notably, the Bi 4f 7/2 and Bi 4f 5/2 in the BC-3 nanocomposites were located at about 164.6 and159.3 eV, respectively [35,36]. These shifts can be attributed to the chemical bonding actions among the components.…”

Section: Characterizations Of Catalystsmentioning

confidence: 98%

Peroxymonosulfate Activation by Bi2WO6/BiOCl Heterojunction Nanocomposites under Visible Light for Bisphenol A Degradation

et al. 2021

View full text Add to dashboard Cite

The combination of peroxymonosulfate (PMS) activation and photocatalysis has proven to be effective for organic contaminants treatment. However, the construction of an efficient catalytic material is an important challenge. Herein, novel Bi2WO6/BiOCl heterojunction nanocomposites were successfully designed and fabricated using a facile and effective strategy for bisphenol A (BPA) photodegradation with PMS activation. The well-designed heterojunction with improvement of the contact area and interface microstructure was obtained through in situ growth of the Bi2WO6 on the surface of BiOCl. The Bi2WO6/BiOCl nanocomposites exhibit excellent catalytic performance in PMS activation for BPA degradation under visible light irradiation. A possible photocatalytic reaction mechanism was systematically revealed. The excellent catalytic performance is mainly attributed to the strong interaction between Bi2WO6 and BiOCl, resulting in an enhanced photoabsorption and a more efficient interfacial charge separation and transfer. This paper provides a novel strategy to design efficient catalytic materials for organic contaminants remediation with PMS activation.

show abstract

Solvent‐Free Synthesis of Bismuth Oxychloride Microflower/Nanosheet Homojunctions for Photoactivity Enhancement

Cited by 16 publications

References 65 publications

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

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

A BiOCl/β-FeOOH heterojunction for HER photocatalytic performance under visible-light illumination

Peroxymonosulfate Activation by Bi2WO6/BiOCl Heterojunction Nanocomposites under Visible Light for Bisphenol A Degradation

Contact Info

Product

Resources

About