Preparation of hydrophobic calcium carbonate phosphors and its application in fluorescent films

Wang, Di; Wang, Hongyang; Qian, Benfu; Zou, Haifeng; Zheng, Keyan; Zhou, Xin; Song, Yanhua; Ye, Sheng

doi:10.1016/j.jlumin.2019.116844

Cited by 18 publications

(4 citation statements)

References 34 publications

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“…The fluorescence spectra confirmed that the prepared light conversion film converted the blue-violet light into red light. Wang et al [ 1 ] made CaCO 3 :Eu 3+ phosphors modified with surfactants using the carbonization method and prepared a PE film with the modified CaCO 3 :Eu 3+ phosphor. The experimental results illustrated that compared with the oleic acid, stearyl alcohol phosphoric acid, and sodium lauryl sulfate, sodium oleate was the best modifier for CaCO 3 :Eu 3+ phosphor, as the CaCO 3 :Eu 3+ phosphor modified by sodium oleate was evenly dispersed in the PE film.…”

Section: Classification Of Light Conversion Agentsmentioning

confidence: 99%

“…The scientific literature shows that the blue-violet (400–480 nm) and red-orange light (600–700 nm) in sunlight can promote the growth and development of crops. The blue-violet light is beneficial in increasing the protein content of crops, while the red-orange light increases the synthesis of crop carbohydrates [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. However, the emission of the ultraviolet light (280–390 nm) is not only unfavorable to the growth of plants, but also increases plant diseases and insect pests.…”

Section: Introductionmentioning

confidence: 99%

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Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

2022

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As new fluorescent materials, light wavelength conversion materials (light conversion agents) have attracted increasing attention from scientific researchers and agricultural materials companies due to their potential advantages in efficiently utilizing solar energy and increasing crop yield. According to the material properties, the light conversion agents can be divided into fluorescent dyes, organic rare-earth complexes, and inorganic rare-earth complexes. The current researches indicates that the fluorescent dyes have relatively high production costs, poor light stability, difficult degradation processes, and easily cause pollution to the ecological environment. The organic rare-earth complexes have short luminescence times, high production costs, and suffer from rapid decreases in luminescence intensity. Compared with fluorescent dyes and organic rare-earth complexes, although rare-earth inorganic complexes have high luminous efficiency, stable chemical properties, and better spectral matching performance, the existing inorganic light conversion agents have relatively poor dispersibility in agricultural films. According to the research on light conversion agents at home and abroad in recent years, this paper first introduces the three common light conversion agents, namely fluorescent dyes, organic rare-earth complexes, and inorganic rare-earth complexes, as well as their uses in agricultural films and their mechanisms of light conversion. At the same time, the preparation methods, advantages, disadvantages, and existing problems of various light conversion agents are classified and explained. Finally, we predict the development trends for light conversion agents in the future by considering six aspects, namely efficiency, cost, compatibility with greenhouse films, light matching, and light transmittance, in order to provide a reference for the preparation of stable and efficient light conversion agent materials.

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Section: Classification Of Light Conversion Agentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

2022

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“…As the crucial functional component of LCFs, light conversion agents (LCAs) primarily divide into three categories: inorganic compounds, 16,17 organic uorescent dyes, 18 and organic rare earth complexes. 19 Generally, the existing LCAs still have various defects, such as poor matching between the LCA's emission and the absorption of plant pigments, low stability, poor dispersibility or exorbitant price.…”

Section: Introductionmentioning

confidence: 99%

In situ wrapping carbon dots towards robust, durable and transparent tri-layer films with precise spectral conversion and excellent self-cleaning properties

Zhang,

2024

J. Mater. Chem. A

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“…[6] Bacterial calcium carbonate precipitation or cementation plays an important role in various application areas of civil engineering, such as repairing cracks in rock and concrete, improving bearing capacity, reducing permeability, and increasing the tensile hardness in sand with dilative tendencies. [5] The luminescence properties of CaCO 3 have been investigated by some researchers [2,7,8] but, according to the best knowledge of authors, no computational model has been applied to this using the results obtained with a thermoluminescence (TL) method. [9][10][11][12] Therefore deep learning of the long short-term memory (LSTM) [13][14][15] model was used to classify the TL data.…”

mentioning

confidence: 99%

Classification of thermoluminescence features of CaCO₃ with long short‐term memory model

Işık

Toktamış

et al. 2021

Luminescence

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Calcium carbonate (CaCO 3 ), a mineral commonly found in the Earth's crust, is mainly in the forms of calcite and aragonite. Calcite has the most stable type of thermodynamics at room temperature and ambient pressure. It has wide band gap structure and is of great interest for a wide-range technical and industrial applications due to its physical properties and suitability. In this study, a new method based on the long short-term memory (LSTM) model of deep learning is proposed to classify the thermoluminescence properties such as fading, cycle of measurement, heating rate, and dose-response of CaCO 3 . Therefore the thermoluminescence properties of calcite was investigated as a suitable band structure and its coherent data were used to classify the features using a deep learning LSTM model. Experiments were carried out on a dataset consisting of four classes. The accuracy, precision, and sensitivity values of the proposed model obtained were 98.34, 97.90, and 98.56%, respectively. The classification process of the results obtained from the designed model showed good performance.

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Preparation of hydrophobic calcium carbonate phosphors and its application in fluorescent films

Cited by 18 publications

References 34 publications

Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

In situ wrapping carbon dots towards robust, durable and transparent tri-layer films with precise spectral conversion and excellent self-cleaning properties

Classification of thermoluminescence features of CaCO₃ with long short‐term memory model

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Preparation of hydrophobic calcium carbonate phosphors and its application in fluorescent films

Cited by 18 publications

References 34 publications

Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

Research Progress of Light Wavelength Conversion Materials and Their Applications in Functional Agricultural Films

In situ wrapping carbon dots towards robust, durable and transparent tri-layer films with precise spectral conversion and excellent self-cleaning properties

Classification of thermoluminescence features of CaCO3 with long short‐term memory model

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Classification of thermoluminescence features of CaCO₃ with long short‐term memory model