Synthesis and Characterizations of BiOCl Sheets

Li, D. K.; Pei, Lizhai; Yong, Yang; Pei, Yukui; Xie, Y. K.; Zhang, Q. F.

doi:10.1380/ejssnt.2012.161

Cited by 23 publications

(20 citation statements)

References 17 publications

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“…The peak at 1460 cm -1 is attributed to the bending vibrations of O-H groups of adsorbed water molecules and the corresponding stretching vibrations are appeared at 3531 cm -1 . The surface hydroxyl groups originated from the adsorbed water molecules on the semiconductor play an important role in the photocatalytic reactions [40][41][42][43][44][45].…”

Section: Resultsmentioning

confidence: 99%

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

et al. 2015

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BiOCl was synthesized using bismuth nitrate pentahydrate and sodium chloride via ball milling for 15 (B15), 30 (B30), and 60 (B60) min. Scanning electron microscopy studies revealed the isolated nanoplate morphology for B15, an aggregated structure composed of nanoplates for B30, and a special three-dimensional morphology for B60. The X-ray diffraction patterns showed the purity and crystallinity of the products improved by increasing the milling time. Fourier transform infrared spectroscopy, photoluminescence spectroscopy, and nitrogen adsorption-desorption analysis using the BrunauerEmmett-Teller technique were also used to study the products. Diffuse reflectance spectroscopy studies revealed the band gap value of 3.27 eV for B30, B60 and a narrow band gap of 2.77 eV for B15. Photocatalytic studies toward rhodamine B degradation confirmed that the narrow band gap B15 was a stable and recyclable photocatalyst with the highest activity among the products. The effects of factors such as oxygen vacancies, surface defects, morphology, and band gap of products on the photocatalytic activities were studied. Comparison of rhodamine B and pentachlorophenol photodegradation processes revealed that both direct and indirect (dye-photosensitized) photocatalytic pathways could influence the removal results. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

et al. 2015

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“…The peak at 1458 cm -1 is attributed to the bending vibrations of O-H groups of adsorbed water molecules and the peak for their stretching vibrations is present at 3527 cm -1 . The surface hydroxyl groups, which are originated from the adsorbed water molecules on the semiconductor, have a noteworthy influence on the photocatalytic performance [44][45][46][47][48][49].…”

Section: Resultsmentioning

confidence: 99%

Solid state preparation and photocatalytic activity of bismuth oxybromide nanoplates

et al. 2015

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A mechanochemical method was applied to prepare bismuth oxybromide (BiOBr) nanoplates using bismuth nitrate pentahydrate and potassium bromide for 15 (A15), 30 (A30) and 60 (A60) minutes. Scanning electron microscopy studies showed that all the products were comprised of nanoplates. Aggregated nanoplates along with microblocks were observed for A15 and A30 and the entire morphology was not homogenous. The morphology of A60 was uniform and consisted of thin and isolated nanoplates. Evaluation of the X-ray diffraction patterns showed that the purity and crystallinity of the products improved by increasing the milling time. The energy dispersive X-ray analysis confirmed the high purity of the products. Fourier transform infrared spectroscopy, photoluminescence spectroscopy and nitrogen adsorption-desorption analysis using the Brunauer-Emmett-Teller technique were also used to study the products. Diffuse reflectance spectroscopy studies clarified that all the samples were indirect band gap semiconductors with the band gap of 3.25 eV for A15 and the narrow band gap of 2.74 eV for A30 and A60. Photocatalytic studies revealed that A30 has the highest photocatalytic activity among the products. The effect of oxygen vacancies, surface defects, morphology and band gap of products on the photocatalytic or photosensitized degradation of rhodamine B (RhB) and pentachlorophenol (PCP) aqueous solutions were studied.

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“…Copyright 2006, American Chemical Society FIGURE 4 Schematic of matrix assisted pulsed laser evaporation (MAPLE) smoother than the one from polished pellets due to rapid depolymerization of the polished pellets. [106] Jiang and co-authors utilized XRD and TEM to characterize the film morphology of PTFE atop glass slides or carbon-coated copper grids by PLD using a KrF (λ = 248 nm) laser. At a substrate temperature between 200 C and 450 C, the films comprised both amorphous and crystalline regions.…”

Section: Crystallization Of Polymer Thin Films By Pvdmentioning

confidence: 99%

Exploiting physical vapor deposition for morphological control in semi‐crystalline polymer films

Wang

Jeong

Chowdhury

et al. 2018

Polymer Crystallization

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Research in semi‐crystalline polymer thin films has seen significant growth due to their fascinating thermal, mechanical, and electronic properties. In all applications, acquiring precise control over the film morphology atop various substrates or in the free‐standing film geometry is key to advancing product performance. This article reviews the crystallization of polymer thin films processed via physical vapor deposition (PVD). Classical PVD techniques are briefly reviewed, highlighting their working principles as well as successes and challenges to achieving morphological control of polymer films. Subsequently, the recent development of a unique PVD technique termed Matrix Assisted Pulsed Laser Evaporation (MAPLE) is highlighted. The non‐destructive technology overcomes the major drawback of polymer degradation by classical PVD. Recent advances highlighting how MAPLE can be exploited to control polymer film morphology in ways not achievable by other methods are presented. Challenges and future scope of PVD for polymer film deposition concludes the review.

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Synthesis and Characterizations of BiOCl Sheets

Cited by 23 publications

References 17 publications

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

Mechanochemically prepared BiOCl nanoplates for removal of rhodamine B and pentachlorophenol

Solid state preparation and photocatalytic activity of bismuth oxybromide nanoplates

Exploiting physical vapor deposition for morphological control in semi‐crystalline polymer films

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