Large-scale production of high-quality graphene using glucose and ferric chloride

2014 ◽  
Vol 5 (12) ◽  
pp. 4656-4660 ◽  
Author(s):  
Binbin Zhang ◽  
Jinliang Song ◽  
Guanying Yang ◽  
Buxing Han
Keyword(s):  
Ferric Chloride ◽  
Large Scale ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Novel Method

A novel method to prepare high-quality graphene is developed using simple calcination of a mixture of glucose and FeCl3.

Thermal Laser Separation – A Novel Dicing Technology Fulfilling the Demands of Volume Manufacturing of 4H-SiC Devices

2015 ◽  
Vol 821-823 ◽  
pp. 528-532 ◽  
Author(s):  
Dirk Lewke ◽  
Karl Otto Dohnke ◽  
Hans Ulrich Zühlke ◽  
Mercedes Cerezuela Barret ◽  
Martin Schellenberger ◽  
...  
Keyword(s):  
Experimental Data ◽  
Process Control ◽  
Tool Wear ◽  
Large Scale ◽  
State Of The Art ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Laser Separation

One challenge for volume manufacturing of 4H-SiC devices is the state-of-the-art wafer dicing technology – the mechanical blade dicing which suffers from high tool wear and low feed rates. In this paper we discuss Thermal Laser Separation (TLS) as a novel dicing technology for large scale production of SiC devices. We compare the latest TLS experimental data resulting from fully processed 4H-SiC wafers with results obtained by mechanical dicing technology. Especially typical product relevant features like process control monitoring (PCM) structures and backside metallization, quality of diced SiC-devices as well as productivity are considered. It could be shown that with feed rates up to two orders of magnitude higher than state-of-the-art, no tool wear and high quality of diced chips, TLS has a very promising potential to fulfill the demands of volume manufacturing of 4H-SiC devices.

Large-scale production of high-quality reduced graphene oxide

2013 ◽  
Vol 233 ◽  
pp. 297-304 ◽  
Author(s):  
Shichoon Lee ◽  
Sung Hun Eom ◽  
Jin Suk Chung ◽  
Seung Hyun Hur
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Reduced Graphene

scholarly journals Extensive Screening of Green Solvents for Safe and Sustainable UiO-66 Synthesis

2020 ◽  
Author(s):  
Diletta Morelli Venturi ◽  
Filippo Campana ◽  
Fabio Marmottini ◽  
Ferdinando Costantino ◽  
Luigi Vaccaro
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Dimethyl Formamide ◽  
Scale Production ◽  
Green Solvents ◽  
High Quality ◽  
Color Code ◽  
Large Scale Production ◽  
Metal Organic

<p>Zirconium based Metal-Organic Framework UiO-66 is to date considered one of the benchmark compound among stable MOFs and it has attracted a huge attention for its employment in many strategic applications. Large scale production of UiO-66 for industrial purposes requires the use of safe and green solvents, fulfilling the green chemistry principles and able to replace the use of <i>N,N</i>-Dimethyl-Formamide (DMF), which, despite its toxicity, is still considered the most efficient solvent for obtaining UiO-66 of high quality. Herein we report on a survey of about 40 different solvents with different polarity, boiling point and acidity, used for the laboratory scale synthesis of high quality UiO-66 crystals. The solvents were chosen according the European REACH Regulation 1907/2006 among those having low cost, low toxicity and fully biodegradable. Concerning MOF synthesis, the relevant parameters chosen for establishing the quality of the results obtained are the degree are the crystallinity, microporosity and specific surface area, yield and solvent recyclability. Taking into account also the chemical physical properties of all the solvents, a color code was assigned in order to give a final green assessment for the UiO-66 synthesis. Defectivity of the obtained products, the use of acidic modulators and the use of alternative Zr-salts have been also taken into consideration. Preliminary results lead to conclude that GVL (γ-valerolactone) is among the most promising solvents for replacing DMF in UiO-66 MOF synthesis. </p>

scholarly journals Extensive Screening of Green Solvents for Safe and Sustainable UiO-66 Synthesis

2020 ◽  
Author(s):  
Diletta Morelli Venturi ◽  
Filippo Campana ◽  
Fabio Marmottini ◽  
Ferdinando Costantino ◽  
Luigi Vaccaro
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Dimethyl Formamide ◽  
Scale Production ◽  
Green Solvents ◽  
High Quality ◽  
Color Code ◽  
Large Scale Production ◽  
Metal Organic

<p>Zirconium based Metal-Organic Framework UiO-66 is to date considered one of the benchmark compound among stable MOFs and it has attracted a huge attention for its employment in many strategic applications. Large scale production of UiO-66 for industrial purposes requires the use of safe and green solvents, fulfilling the green chemistry principles and able to replace the use of <i>N,N</i>-Dimethyl-Formamide (DMF), which, despite its toxicity, is still considered the most efficient solvent for obtaining UiO-66 of high quality. Herein we report on a survey of about 40 different solvents with different polarity, boiling point and acidity, used for the laboratory scale synthesis of high quality UiO-66 crystals. The solvents were chosen according the European REACH Regulation 1907/2006 among those having low cost, low toxicity and fully biodegradable. Concerning MOF synthesis, the relevant parameters chosen for establishing the quality of the results obtained are the degree are the crystallinity, microporosity and specific surface area, yield and solvent recyclability. Taking into account also the chemical physical properties of all the solvents, a color code was assigned in order to give a final green assessment for the UiO-66 synthesis. Defectivity of the obtained products, the use of acidic modulators and the use of alternative Zr-salts have been also taken into consideration. Preliminary results lead to conclude that GVL (γ-valerolactone) is among the most promising solvents for replacing DMF in UiO-66 MOF synthesis. </p>

A Novel Method for Expression and Large-Scale Production of Human Brain -Glutamate Decarboxylase

2000 ◽  
Vol 267 (3) ◽  
pp. 777-782 ◽  
Author(s):  
Kathleen M. Davis ◽  
Todd Foos ◽  
C.Sean Bates ◽  
Erin Tucker ◽  
Che-Chang Hsu ◽  
...  
Keyword(s):  
Human Brain ◽  
Glutamate Decarboxylase ◽  
Large Scale ◽  
Scale Production ◽  
Large Scale Production ◽  
Novel Method

scholarly journals Large-Scale Production of High-Quality Helper-Dependent Adenoviral Vectors Using Adherent Cells in Cell Factories

2010 ◽  
Vol 21 (1) ◽  
pp. 120-126 ◽  
Author(s):  
Masataka Suzuki ◽  
Racel Cela ◽  
Christian Clarke ◽  
Terry K. Bertin ◽  
Susana Mouriño ◽  
...  
Keyword(s):  
Large Scale ◽  
Adenoviral Vectors ◽  
Adherent Cells ◽  
Scale Production ◽  
High Quality ◽  
Cell Factories ◽  
Large Scale Production

scholarly journals A Novel Method for High-Level Production of TEV Protease by Superfolder GFP Tag

2009 ◽  
Vol 2009 ◽  
pp. 1-8 ◽  
Author(s):  
Xudong Wu ◽  
Di Wu ◽  
Zhisheng Lu ◽  
Wentao Chen ◽  
Xiaojian Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Large Scale ◽  
Fluorescent Protein ◽  
Anion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Scale Production ◽  
Sequence Specificity ◽  
Tev Protease ◽  
Large Scale Production ◽  
Novel Method

Because of its stringent sequence specificity, tobacco etch virus (TEV) protease is widely used to remove fusion tags from recombinant proteins. Due to the poor solubility of TEV protease, many strategies have been employed to increase the expression level of this enzyme. In our work, we introduced a novel method to produce TEV protease by using visible superfolder green fluorescent protein (sfGFP) as the fusion tag. The soluble production and catalytic activity of six variants ofsfGFP-TEV was examined, and then the best variant was selected for large-scale production. After purified by Ni-NTA affinity chromatography and Q anion exchange chromatography, the best variant ofsfGFP-TEV fusion protease was obtained with purity of over 98% and yield of over 320 mg per liter culture. ThesfGFP-TEV had a similar catalytic activity to that of the original TEV protease. Our research showed a novel method of large-scale production of visible and functional TEV protease for structural genomics research and other applications.

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