Photoinduced Topotactic Growth of Bismuth Nanoparticles from Bulk SrBi2Ta2O9

Li, Yingxuan; Zang, Ling; Li, Yan; Liu, Yun; Liu, Chunyan; Zhang, Ying; He, Hongquan; Wang, Chuanyi

doi:10.1021/cm400065x

Cited by 28 publications

(21 citation statements)

References 46 publications

(49 reference statements)

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“…The molten salt method was used to synthesize the SrBi 2 Ta 2 O 9 (SBTO) platelets. 28 X-ray diffraction (XRD) analysis (Supplementary Figure 1) revealed the formation of SrBi 2 Ta 2 O 9 with an orthorhombic structure (JCPDS Card No. 49-0609).…”

Section: Resultsmentioning

confidence: 99%

“…The molten salt method was used to synthesize SrBi 2 Ta 2 O 9 platelets . In a typical synthesis process, 0.2089 g of strontium nitrate (Sr(NO 3 ) 2 , 99.5%), 0.4608 g of bismuth oxide (Bi 2 O 3 , 99.9%), and 0.4377 g of tantalum oxide (Ta 2 O 5 , 99.9%) were first mixed with 1.2400 g of potassium chloride and 0.9740 g of sodium chloride, which were adopted as solvent when melted.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

Wang

Deepak

2017

ACS Nano

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Unraveling dynamical processes of liquid droplets at liquid/solid interfaces and the interfacial ordering is critical to understanding solidification, liquid-phase epitaxial growth, wetting, liquid-phase joining, crystal growth, and lubrication processes, all of which are linked to different important applications in material science. In this work, we observe direct in situ atomic-scale behavior of Bi droplets segregated on SrBiTaO by using aberration-corrected transmission electron microscopy and demonstrate ordered interface and surface structures for the droplets on the oxide at the atomic scale and unravel a nucleation mechanism involving droplet coalescence at the liquid/solid interface. We identify a critical diameter of the formed nanocrystal in stabilizing the crystalline phase and reveal lattice-induced fast crystallization of the droplet at the initial stage of the coalescence of the nanocrystal with the droplet. Further sequential observations show the stepped coalescence and growth mechanism of the nanocrystals at the atomic scale. These results offer insights into the dynamic process at liquid/solid interfaces, which may have implications for many functionalities of materials and their applications.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

Wang

Deepak

2017

ACS Nano

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“…Bismuth (Bi) is a semimetal with the unique characteristics of small band overlap energy, low charge carrier density and electron effective mass, as well as interesting localized surface plasmon resonance (LSPR) properties . Because of these outstanding properties, Bi can be widely used as a co‐catalyst metal for visible‐light responsive photocatalytic processes.…”

Section: Introductionmentioning

confidence: 99%

The Bi/Bi₂WO₆ heterojunction with stable interface contact and enhanced visible‐light photocatalytic activity for phenol and Cr(VI) removal

Jia

Xue

Wang

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Semiconductor photocatalysis is the most promising green and energy‐saving technology for environmental remediation. Unfortunately, photocatalysis nanotechnology for its practical application is often challenged by the low capturing ability for visible light and use of expensive noble metals. In this work, we report the non‐noble Bi nanoparticles assembled on Bi2WO6 with enhanced visible‐light photocatalytic activity for decontamination of phenol and hexavalent chromium in water. RESULTS The 3% Bi/Bi2WO6 composite had the highest photocatalytic activity compared to pristine Bi2WO6, which could completely decompose phenol into small products within 120 min. More importantly, the Cr(VI) removal rate of the 3% Bi/Bi2WO6 catalyst in the presence of triethanolamine (TEOA, 2%) after irradiation for 12 min was up to 96.2%. CONCLUSIONS The improved photocatalytic performance could be due to the fast transfer of photogenerated charge carried by the formation of an anti‐barrier layer at the interface between metal Bi nanoparticles and the n‐type Bi2WO6 semiconductor; the enhancement of electron energy may be attributed to the localized surface plasmon resonance properties of Bi nanoparticles, as well as conspicuously strengthened and broad light‐capturing ability across the whole visible‐light range. This strategy could provide some inspiration for the design of other Bi‐based semiconductor heterostructures for decomposing harmful organic pollutants in wastewater and purifying hazardous gases in the air. © 2018 Society of Chemical Industry

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“…Recently, other methods are also available [24,25]. All these methods have both advantages and drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Size-controllable synthesis and bandgap modulation of single-layered RF-sputtered bismuth nanoparticles

Chern

Lee

2014

Nanoscale Res Lett

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We here report a simple and efficient method to grow single-layer bismuth nanoparticles (BiNPs) with various sizes on glass substrates. Optimal conditions were found to be 200°C and 0.12 W/cm2 at a growth rate of 6 Å/s, with the deposition time around 40 s. Scanning electron microscope (SEM) images were used to calculate the particle size distribution statistics, and high-resolution X-ray diffraction (XRD) patterns were used to examine the chemical interactions between BiNPs and the substrates. By measuring the transmission spectra within the range of 300 to 1,000 nm, we found that the optical bandgap can be modulated from 0.45 to 2.63 eV by controlling the size of these BiNPs. These interesting discoveries offer an insight to explore the dynamic nature of nanoparticles.

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Photoinduced Topotactic Growth of Bismuth Nanoparticles from Bulk SrBi₂Ta₂O₉

Cited by 28 publications

References 46 publications

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

The Bi/Bi₂WO₆ heterojunction with stable interface contact and enhanced visible‐light photocatalytic activity for phenol and Cr(VI) removal

Size-controllable synthesis and bandgap modulation of single-layered RF-sputtered bismuth nanoparticles

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Photoinduced Topotactic Growth of Bismuth Nanoparticles from Bulk SrBi2Ta2O9

Cited by 28 publications

References 46 publications

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

In Situ Atomic-Scale Observation of Droplet Coalescence Driven Nucleation and Growth at Liquid/Solid Interfaces

The Bi/Bi2WO6 heterojunction with stable interface contact and enhanced visible‐light photocatalytic activity for phenol and Cr(VI) removal

Size-controllable synthesis and bandgap modulation of single-layered RF-sputtered bismuth nanoparticles

Contact Info

Product

Resources

About

Photoinduced Topotactic Growth of Bismuth Nanoparticles from Bulk SrBi₂Ta₂O₉

The Bi/Bi₂WO₆ heterojunction with stable interface contact and enhanced visible‐light photocatalytic activity for phenol and Cr(VI) removal