Ionothermal Synthesis of Lanthanide Tetrafluoride Nanoparticles Using Deep Eutectic Solvents

MRS Proceedings ◽

10.1557/opl.2015.532 ◽

2015 ◽

Vol 1804 ◽

pp. 25-30

Author(s):

Benjamin R. Furman ◽

Robert D. Gutierrez ◽

Charles K. Baker

Keyword(s):

Deep Eutectic Solvents ◽

New Method ◽

High Quality ◽

Mild Conditions ◽

Ionothermal Synthesis

ABSTRACTWe have developed a new method for controlling the size, crystallinity, and polydispersity of 100–2000 nm tetrafluoride phosphor particles. Five polyol-based deep eutectic solvents (DESs) were downselected out of a set of more than 130 candidates. We analyzed their benefits in synthesizing phosphor matrix particles of β-NaYF4, β-NaYbF4, and β-NaGdF4. We produced green (λmax = 540 nm) and blue/UV (λmax = 450 nm) upconverting phosphors in DES using Yb,Er and Yb,Tm codopants, respectively. The blue/UV phosphor reaction was scaled the up to 25 L, yielding nearly 400 g of high-quality, bright photoluminescent, β-phase product under mild conditions. We conclude that polyol-based DES systems offer a uniquely specialized and useful toolkit for phosphor synthesis.

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Challenges and Perspective of Recent Biomass Pretreatment Solvents

Frontiers in Chemical Engineering ◽

10.3389/fceng.2021.785709 ◽

2021 ◽

Vol 3 ◽

Author(s):

Kwang Ho Kim ◽

Chang Geun Yoo

Keyword(s):

Ionic Liquids ◽

Conversion Efficiency ◽

Critical Role ◽

Deep Eutectic Solvents ◽

Biomass Pretreatment ◽

High Quality ◽

Mild Conditions ◽

Sustainable Products ◽

Biomass Fractionation ◽

Biomass Components

The increased demands on renewable and sustainable products require enhancing the current conversion efficiency and expanding the utilization of biomass from a single component (i.e., cellulose) to entire biomass components in the biorefinery concept. Pretreatment solvent plays a critical role in various biorefinery processes. Recent pretreatment solvents such as organic co-solvents, acid hydrotropes, ionic liquids and deep eutectic solvents showed effective biomass fractionation as well as preservation of high-quality cellulose and lignin under mild conditions. Despite these significant enhancements in biomass pretreatment solvent, there are still many challenges, such as feedstock variety, valorization of non-cellulose components, and eco-friendliness of the applied catalyst and solvent. These technical, economic and environmental obstacles should be considered in future biomass pretreatment solvents. In particular, the development of feedstock-agnostic solvent with high fractionation performance for high quality and quantity of all three major components (i.e., cellulose, hemicellulose, and lignin) together would be an ideal direction.

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Rapid synthesis of aurones under mild conditions using a combination of microwaves and deep eutectic solvents

Tetrahedron Letters ◽

10.1016/j.tetlet.2016.12.015 ◽

2017 ◽

Vol 58 (3) ◽

pp. 240-241 ◽

Cited By ~ 13

Author(s):

Kimberly M. Taylor ◽

Zachary E. Taylor ◽

Scott T. Handy

Keyword(s):

Deep Eutectic Solvents ◽

Rapid Synthesis ◽

Mild Conditions

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Direct and metal-free oxidative amination of sp3 C–H bonds for the construction of 2-hetarylquinazolin-4(3H)-ones

Organic Chemistry Frontiers ◽

10.1039/c6qo00231e ◽

2016 ◽

Vol 3 (9) ◽

pp. 1096-1099 ◽

Cited By ~ 5

Author(s):

Huanhuan Liu ◽

Tianran Zhai ◽

Shiteng Ding ◽

Yalei Hou ◽

Xiangyu Zhang ◽

...

Keyword(s):

Transition Metal ◽

Functional Group ◽

New Method ◽

Oxidative Amination ◽

Metal Free ◽

Mild Conditions

New method for synthesis of 2-hetarylquinazolin-4(3H)-ones from 2-aminobenzamides and (2-azaaryl)methanes under transition-metal free conditions, featuring a wide substrate scope with a broad range of functional group tolerance under mild conditions.

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New method for raising high-quality fabrics

Journal of the Textile Institute ◽

10.1080/00405000701830649 ◽

2009 ◽

Vol 100 (4) ◽

pp. 358-367 ◽

Cited By ~ 1

Author(s):

G. Belforte ◽

G. Eula ◽

C. Ferraresi ◽

A. Ivanov ◽

F. Testore

Keyword(s):

New Method ◽

High Quality

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Purification of Kraft cellulose under mild conditions using choline acetate based deep eutectic solvents

Green Chemistry ◽

10.1039/d0gc03375h ◽

2020 ◽

Vol 22 (24) ◽

pp. 8680-8691

Author(s):

Greta Colombo Dugoni ◽

Andrea Mezzetta ◽

Lorenzo Guazzelli ◽

Cinzia Chiappe ◽

Monica Ferro ◽

...

Keyword(s):

Deep Eutectic Solvents ◽

Mild Conditions

Novel choline acetate based deep eutectic solvents (DESs) solubilize hemicellulose up to 45 wt% at 80 °C. A PoC test on Kraft cellulose illustrates the cellulose/hemicellulose separation.

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Strategic Team AI Path Plans: Probabilistic Pathfinding

International Journal of Computer Games Technology ◽

10.1155/2008/834616 ◽

2008 ◽

Vol 2008 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Tng C. H. John ◽

Edmond C. Prakash ◽

Narendra S. Chaudhari

Keyword(s):

Genetic Algorithm ◽

Genetic Algorithms ◽

Computer Games ◽

Fitness Function ◽

New Method ◽

High Quality ◽

Plan Generation ◽

Novel Method ◽

Games And Simulations

This paper proposes a novel method to generate strategic team AI pathfinding plans for computer games and simulations using probabilistic pathfinding. This method is inspired by genetic algorithms (Russell and Norvig, 2002), in that, a fitness function is used to test the quality of the path plans. The method generates high-quality path plans by eliminating the low-quality ones. The path plans are generated by probabilistic pathfinding, and the elimination is done by a fitness test of the path plans. This path plan generation method has the ability to generate variation or different high-quality paths, which is desired for games to increase replay values. This work is an extension of our earlier work on team AI: probabilistic pathfinding (John et al., 2006). We explore ways to combine probabilistic pathfinding and genetic algorithm to create a new method to generate strategic team AI pathfinding plans.

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Ethanol Synthesis from Dimethyl Oxalate Hydrogenation on Cu/SiO2 Catalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.175 ◽

2012 ◽

Vol 550-553 ◽

pp. 175-178 ◽

Cited By ~ 1

Author(s):

Wen Wen Guo ◽

Qian Qian Yin ◽

Ling Jun Zhu ◽

Shu Rong Wang

Keyword(s):

High Activity ◽

Experimental Results ◽

New Method ◽

Dimethyl Oxalate ◽

Mild Conditions ◽

Ethanol Synthesis

A new method of sustainable ethanol synthesis by hydrogenating dimethyl oxalate (DMO), which is easily obtained from syngas, over a Cu/SiO2catalyst is proposed based on previous works. The experimental results indicate that the Cu/SiO2catalyst exhibited a high activity under the relative mild conditions of 270°C and 2MPa with ethanol selectivity as high as 88% and extremely high DMO conversion.

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Barofractionation as an Innovative Method to Obtain Pectic Polysaccharides

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.899.599 ◽

2021 ◽

Vol 899 ◽

pp. 599-605

Author(s):

Dara Slobodova ◽

Raisa Gorshkova ◽

Stanislav Pankov

Keyword(s):

High Pressure ◽

Physicochemical Parameters ◽

New Method ◽

High Yield ◽

Dynamic Mode ◽

High Quality ◽

Pectic Polysaccharides ◽

Ph Values ◽

Pectin Polysaccharides ◽

Innovative Method

An innovative method has been developed and an installation has been created for obtaining pectin polysaccharides in a dynamic mode under the influence of high pressure. The process of degradation of protopectin at various pH values pH of the hydrolyzing agent was studied using the example of sunflower baskets. It has been established that the use of the new method makes it possible to obtain high-quality target products with a high yield in gentle conditions. The possibility of combining the stages of hydrolysis-extraction and fractionation has been demonstrated, which makes it possible to control the process of obtaining pectic polysaccharides in the direction of obtaining substances with specified physicochemical parameters.

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An improved method for preparation of mouse retinal cryosections

European Journal of Histochemistry ◽

10.4081/ejh.2020.3154 ◽

2020 ◽

Vol 64 (3) ◽

Author(s):

Ling Li ◽

Yongqiong Lin ◽

Fang Yang ◽

Tongdan Zou ◽

Jialiang Yang ◽

...

Keyword(s):

Retinal Detachment ◽

Vision Research ◽

New Method ◽

Specific Marker ◽

Improved Method ◽

High Quality ◽

New Methods ◽

Modified Method ◽

Routine Assay ◽

Super Glue

Immunohistochemistry using mouse retinal cryosections is a routine assay used in vision research. However, retinal tissues are fragile, and it is difficult to obtain an ideal retinal cryosection. Here, we developed a modified method for preparing retinal cryosection. Super Glue was applied on the surface of the sclera before the cornea and the lens are removed from either the unfixed or PFA-fixed mouse eyeballs. The new methods largely prevented retinal detachment in mouse retinal cryosections. Immunostaining of retinal cryosections derived from PFA-fixed mouse eyes using rod and cone markers yielded high-quality immunofluorescent images. Immunolabeling of retinal cryosections obtained from unfixed mouse eyes using a cilium-specific marker had improved orientations of photoreceptor connecting cilia. This new method substantially improves the morphology and immunostaining results of fixed and unfixed mouse eyes.

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