Binary halide, ternary perovskite-like, and perovskite-derivative nanostructures: hot injection synthesis and optical and photocatalytic properties

Lim, Suh-Ciuan; Lin, Hung-Wen; Tsai, Wen‐Hui; Lin, Hao‐Wu; Hsu, Yao-Tsung

doi:10.1039/c6nr06740a

Cited by 26 publications

(21 citation statements)

References 31 publications

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“…As it was mentioned before, the optical properties of the NPSs are related to shape, size, and surface chemistry of them due to the significant changes in the band structures. Therefore, by the variation of the surfactants, ligands, reaction temperature and time, the perovskite precursor composition can be adjust [33] to realize the formation of nanowires, nanoplatelets, spherical dots, and nanorods ( Figure 3) [33][34][35]. A critical point for the hot injection is the reaction temperature effecting the size of the NPSs.…”

Section: Hot Injection Methodsmentioning

confidence: 99%

Perovskite Nanoparticles

Gültekin¹,

Havare²,

Siyahjani³

et al. 2021

Perovskite and Piezoelectric Materials

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2D perovskite nanoparticles have a great potential for using in optoelectronic devices such as Solar Cells and Light Emitting Diodes within their tuneable optic and structural properties. In this chapter, it is aimed to express “relation between chemical structures and photo-physical behaviours of perovskite nanoparticles and milestones for their electronic applications”. Initially, general synthesis methods of perovskite nanoparticles have been explained. Furthermore, advantages and disadvantages of the methods have been discussed. After the synthesis, formation of 2D perovskite crystal and effects on shape factor, particle size and uniformity of perovskite have been explained in detail. Beside these, optic properties of luminescent perovskite nanoparticles have been summarized a long with spectral band tuning via size and composition changes. In addition, since their different optical properties and relatively more stable chemical structure under ambient conditions, a comprehensive compilation of opto-electronic applications of 2D perovskite nanoparticles have been prepared.

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Section: Hot Injection Methodsmentioning

confidence: 99%

Perovskite Nanoparticles

Gültekin¹,

Havare²,

Siyahjani³

et al. 2021

Perovskite and Piezoelectric Materials

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show abstract

“…[3,4] To this end, water-soluble templates are preferred because they can be easily and quickly removed by simply dispersing the samples in water. [5] In a number of studies, sodium chloride (NaCl), a common water-soluble material, has been successfully used as the templates to fabricate cage-like structures made of SiO 2 , SnO 2, and NaYF 4 . [6][7][8] However, it remains a challenge to process a water-soluble material such as NaCl as nanocrystals with uniform and controllable sizes.…”

Section: Introductionmentioning

confidence: 99%

“…In general, it is necessary to remove the templates under simple and mild conditions in order to preserve the hollow structure while minimizing the production cost . To this end, water‐soluble templates are preferred because they can be easily and quickly removed by simply dispersing the samples in water . In a number of studies, sodium chloride (NaCl), a common water‐soluble material, has been successfully used as the templates to fabricate cage‐like structures made of SiO 2 , SnO 2, and NaYF 4 .…”

Section: Introductionmentioning

confidence: 99%

Continuous Production of Water‐Soluble Nanocrystals through Anti‐Solvent Precipitation in a Fluidic Device

et al. 2019

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This paper describes a simple and robust method for the continuous production of water‐soluble nanocrystals using anti‐solvent precipitation under diffusion control in a fluidic device. We use sodium chloride (NaCl) as an example to demonstrate the concept. In a typical process, aqueous NaCl and ethanol (the anti‐solvent) serve as the focused and focusing phases, respectively, for the generation of a coaxial‐flow system. Upon contact with each other, the rapid diffusion between water and ethanol leads to the formation of NaCl nanocrystals at the interface while a gradient in NaCl concentration is created along the flow direction. The nucleation and growth of NaCl nanocrystals can be readily tuned by varying the hydrodynamic parameters such as the ratio between the flow rates of the two phases and the total volumetric rate. By optimizing these parameters, we are able to produce NaCl nanocubes and nanospheres as small as 20 nm and 6 nm, respectively, while attaining a narrow distribution in size. We have also successfully generated KCl nanocrystals with similar controls, demonstrating the generality of this method for the production of water‐soluble nanocrystals.

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“…Recently, ternary composites containing three semiconductors have shown enhanced charge transfer rates and photocatalytic activities, which are attributed to the strong synergistic effect of the different components . In this light, several co‐catalysts have been applied to integrate with CN/CZS composites, including metal–organic frameworks and transition metal sulfides .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of noble‐metal‐free ternary K₇HNb₆O₁₉/Cd_0.5Zn_0.5S/g‐C₃N₄ tandem heterojunctions for efficient photocatalytic performance under visible light

Zhou

Zhao

et al. 2019

Applied Organom Chemis

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Exploring noble-metal-free, highly active and durable catalysts is vital to get to grips with the energy and environmental issues. Herein, we first dexterously design and synthesize a class of ternary Nb 6 /CZS/g-CN photocatalysts for the removal of hexavalent chromium Cr (VI) and organic dye pollutant (MO) from wastewater under visible-light irradiation. A heterojunction Nb 6 -1/CZS/g-CN loaded with 0.01 g K 7 HNb 6 O 19 showed excellent photocatalytic performance, with the MO photodegradation efficiency of 94% in 1 h and the Cr (VI) (150 mg/l) photoreduction efficiency as high as 91% in 2 hr. The main active species were deemed to be O 2 .-. Additionally, the as-prepared ternary heterojunction exhibits superior hydrogen evolution reaction (HER) rate. A heterojunction Nb 6 -4/CZS/g-CN loaded with 0.5 g K 7 HNb 6 O 19 exhibited the highest H 2 evolution rate as high as 1777.86 μmol h −1 g −1 under visible-light illumination, which is increased to 5.7 and 2.7 times that of bare CZS and biphase heterojunction CZS/g-CN . These findings afford a new class of promising low-cost photocatalyst bodying for its huge potential value in sustainable energy development and wastewater treatment.

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Binary halide, ternary perovskite-like, and perovskite-derivative nanostructures: hot injection synthesis and optical and photocatalytic properties

Cited by 26 publications

References 31 publications

Perovskite Nanoparticles

Perovskite Nanoparticles

Continuous Production of Water‐Soluble Nanocrystals through Anti‐Solvent Precipitation in a Fluidic Device

Synthesis of noble‐metal‐free ternary K₇HNb₆O₁₉/Cd_0.5Zn_0.5S/g‐C₃N₄ tandem heterojunctions for efficient photocatalytic performance under visible light

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Binary halide, ternary perovskite-like, and perovskite-derivative nanostructures: hot injection synthesis and optical and photocatalytic properties

Cited by 26 publications

References 31 publications

Perovskite Nanoparticles

Perovskite Nanoparticles

Continuous Production of Water‐Soluble Nanocrystals through Anti‐Solvent Precipitation in a Fluidic Device

Synthesis of noble‐metal‐free ternary K7HNb6O19/Cd0.5Zn0.5S/g‐C3N4 tandem heterojunctions for efficient photocatalytic performance under visible light

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Synthesis of noble‐metal‐free ternary K₇HNb₆O₁₉/Cd_0.5Zn_0.5S/g‐C₃N₄ tandem heterojunctions for efficient photocatalytic performance under visible light