Improved stability and efficiency of perovskite via a simple solid diffusion method

Wang, W.; Guo, Runda; Xiong, Xuhui; Liu, H.; Chen, W.; Hu, Shiben; Amador, Eric; Chen, Banghui; Zhang, Xiangxiong; Wang, Li

doi:10.1016/j.mtphys.2021.100374

Cited by 26 publications

(35 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a sample has a large pore size, RhB can quickly reach active sites at the beginning of adsorption, resulting in a faster adsorption rate [38][39][40][41]. Our results reported here, in addition to the literature [42][43][44][45], prove that porous materials have many applications, from antipollution to solid-state lighting and electronics.…”

Section: Adsorption Kinetic Studiessupporting

confidence: 65%

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this study, phosphorus-modified alumina with large pore size was synthesized through a coprecipitation method. The carbon-covered, phosphorus-modified alumina with large pores was prepared by impregnating with glucose and carbonizing to further improve the adsorption of organic dyes. The morphology and structure of these composites were characterized by various analysis methods, and Rhodamine B (RhB) adsorption was also examined in aqueous media. The results showed that the specific surface area and pore size of the phosphorus-modified alumina sample AP7 (prepared with a P/Al molar ratio of 0.07) reached 496.2 m2·g−1 and 21.9 nm, while the specific surface area and pore size of the carbon-covered phosphorus-modified alumina sample CAP7–27 (prepared by using AP7 as a carrier for glucose at a glucose/Al molar ratio of 0.27) reached 435.3 m2·g−1 and 21.2 nm. The adsorption experiment of RhB revealed that CAP7–27 had not only an equilibrium adsorption capacity of 198 mg·g−1, but also an adsorption rate of 162.5 mg·g−1 in 5 min. These superior adsorption effects can be attributed to the similar pore structures of CAP7–27 with those of alumina and the specific properties with those of carbon materials. Finally, the kinetic properties of these composites were also studied, which were found to be consistent with a pseudo-second-order kinetic model and Langmuir model for isothermal adsorption analysis. This study indicates that the prepared nanomaterials are expected to be promising candidates for efficient adsorption of toxic dyes.

show abstract

Section: Adsorption Kinetic Studiessupporting

confidence: 65%

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…To demonstrate the potential of composites in practical applications, the stability of heating and cooling cycles for CsPbX 3 @SiO 2 is measured, and the PL intensity decreased with the rising temperature, as shown in Figure . The increase of temperature causes the CsPbX 3 lattice expansion, which reduces the potential energy at the top of the valence band and increases the potential energy at the bottom of the conduction band, leading to a larger band gap and a blue-shifted emission peak . At high temperatures, the enhanced lattice vibration would lead to more nonradiative transitions, which seriously quench the emission of PQDs, but the PL intensity can be restored during cooling.…”

Section: Resultsmentioning

confidence: 99%

“…The increase of temperature causes the CsPbX 3 lattice expansion, which reduces the potential energy at the top of the valence band and increases the potential energy at the bottom of the conduction band, leading to a larger band gap and a blue-shifted emission peak. 33 At high temperatures, the enhanced lattice vibration would lead to more nonradiative transitions, which seriously quench the emission of PQDs, 34 but the PL intensity can be restored during cooling. It is confirmed that the phase does not change after the heating and cooling cycling by XRD (shown in Figure S6).…”

Section: + 2cspbbrmentioning

confidence: 99%

One-Step Melt Closed Mesoporous SiO₂ for Large-Scale Synthesis of Confined CsPbX₃ (X = Cl, Br, and I) Quantum Dots and LED Applications

Song

Liu

Zhou

et al. 2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

All-inorganic perovskite quantum dots (PQDs) have great application prospects in many fields because of their excellent photoelectric properties. However, their instability in water, oxygen, light, and heat leads to photoluminescence quenching, and the method of colloidal synthesis makes it difficult to achieve a large-scale synthesis, limiting practical applications. Herein, we synthesize CsPbX3@SiO2 with excellent optical performance and stability by closing the mesopores of SiO2 at high temperature in air atmosphere. Moreover, the photoluminescence quantum yield (PLQY) of CsPbBr3@SiO2 is as high as 80.6%, and the full width at half-maximum (fwhm) is 23 nm. In addition, CsPbX3@SiO2 shows excellent stability as a result of the melt closed mesoporous SiO2, and the relative electroluminescence intensity of composites remains 125.6% of the original after operating at 85% humidity and 85 °C for 360 h. Neutral white light was obtained by assembling blue LEDs with green and red composite materials, whose color temperature (CCT) was 4995 K and color gamut covered 134.6% of NTSC. Impressively, the preparation process of mesoporous SiO2 and CsPbX3@SiO2 is simple and low-cost. Furthermore, it can enable large-scale preparation and shows great potential in practical applications.

show abstract

“…Various potential materials have been developed for these purposes, including all-inorganic compounds [ 4 , 5 , 8 ], all-organic compounds [ 9 , 10 ], and organic-inorganic hybrid materials [ 2 , 4 , 6 , 9 ]. In contrast to all-inorganic materials that require high temperature for synthesis through the solid-state method, organic-inorganic hybrid materials can be synthesized via simpler methods such as solvothermal [ 12 , 13 , 14 ], hydrothermal [ 15 , 16 ], or diffusion methods [ 17 , 18 ]. Moreover, hybrid materials will have the properties of their components simultaneously, either inorganic or organic [ 11 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Photophysical properties of ammonium, pyrrolidinium, piperidinium, imidazolium, and pyridinium as a guide to prepare ionic-organic hybrid materials

Kusumawati

Ivansyah

Ali

et al. 2022

Heliyon

View full text Add to dashboard Cite

Improved stability and efficiency of perovskite via a simple solid diffusion method

Cited by 26 publications

References 40 publications

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

One-Step Melt Closed Mesoporous SiO₂ for Large-Scale Synthesis of Confined CsPbX₃ (X = Cl, Br, and I) Quantum Dots and LED Applications

Photophysical properties of ammonium, pyrrolidinium, piperidinium, imidazolium, and pyridinium as a guide to prepare ionic-organic hybrid materials

Contact Info

Product

Resources

About

Improved stability and efficiency of perovskite via a simple solid diffusion method

Cited by 26 publications

References 40 publications

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

Preparation of Carbon-Covered Phosphorus-Modified Alumina with Large Pore Size and Adsorption of Rhodamine B

One-Step Melt Closed Mesoporous SiO2 for Large-Scale Synthesis of Confined CsPbX3 (X = Cl, Br, and I) Quantum Dots and LED Applications

Photophysical properties of ammonium, pyrrolidinium, piperidinium, imidazolium, and pyridinium as a guide to prepare ionic-organic hybrid materials

Contact Info

Product

Resources

About

One-Step Melt Closed Mesoporous SiO₂ for Large-Scale Synthesis of Confined CsPbX₃ (X = Cl, Br, and I) Quantum Dots and LED Applications