scholarly journals Characterizations and Application of Supported Ionic Liquid [bmim][CF3SO3]/SiO2 in CO2 Capture

2017 ◽  
Vol 888 ◽  
pp. 485-490
Author(s):  
Tengku Sharifah Marliza ◽  
Mohd Ambar Yarmo ◽  
Azizul Hakim ◽  
Maratun Najiha Abu Tahari ◽  
Yun Hin Taufiq-Yap
Keyword(s):  
Ionic Liquid ◽  
Atmospheric Pressure ◽  
Gas Adsorption ◽  
Chemical Properties ◽  
Industrial Applications ◽  
Supported Ionic Liquid ◽  
Adsorption Of Co ◽  
Adsorption Desorption ◽  
Physical And Chemical ◽  
And Chemical Properties

Supported ionic liquid (IL) [bmim][CF3SO3] on SiO2 was prepared, characterized and its potential evaluated for CO2 capture via adsorption and desorption studies using gas adsorption analyzer. The physical and chemical properties were determined using N2 adsorption/desorption and CO2-TPD analysis. The increasing IL loading caused a drastic decrease in the surface area as well as pore volume due to the confinement of IL within the micropore and mesopore area. However, the increasing IL loading increased the basicity of the sorbent which significantly enhanced CO2 chemisorption. Supported [bmim][CF3SO3] on SiO2 revealed the physical and chemical adsorption of CO2 and resulted in a remarkable CO2 adsorption capacity at atmospheric pressure and room temperature (66.7 mg CO2/gadsorbent) which has great potential in industrial applications.

Adsorption–Desorption Characteristics of ss-DNA on 2D TpTta-COF Studied by Fluorescently Labeled Oligonucleotides

NANO ◽  
2021 ◽  
pp. 2150050
Author(s):  
Zhaoyu Han ◽  
Sen Li ◽  
Shaoxian Yin ◽  
Zhi-Qin Wang ◽  
Yanfei Cai ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Kinetic Mechanism ◽  
Optical Biosensors ◽  
Desorption Kinetic ◽  
Wide Range ◽  
Potential Applications ◽  
Fluorescently Labeled Oligonucleotides ◽  
Adsorption Desorption ◽  
Physical And Chemical ◽  
And Chemical Properties

Being the newest member of the 2D materials family, 2D-nanosheet possesses many distinctive physical and chemical properties resulting in a wide range of potential applications. Recently, it was discovered that 2D COF can adsorb single-stranded DNA (ss-DNA) efficiently as well as usefully to quench fluorophores. These properties make it possible to prepare DNA-based optical biosensors using 2D COF. While practical analytical applications are being demonstrated, the fundamental understanding of binding between 2D COF and DNA in solution received relatively less attention. In this work, we carried out a systematic study to understand the adsorption and desorption kinetic, mechanism, and influencing factors of ss-DNA on the surface of 2D COF. We demonstrated that shorter DNAs are adsorbed more rapidly and bind more tightly to the surface of 2D COF. The adsorption is favored by a higher pH. The different buffer types also can affect the adsorption. In Tris-HCl solution, the adsorption reached highest efficiency. By adding the complementary DNA (cDNA), desorption of the absorbed DNA on 2D COF can be achieved. Further, desorption efficiency can also be exchanged by various surfactant in solution. These findings are important for further understanding of the interactions between DNA and COFs and for the optimization of DNA and COF-based devices and sensors.

scholarly journals An experimental study on the effects of freeze–thaw cycles on phosphorus adsorption–desorption processes in brown soil

RSC Advances ◽  
2017 ◽  
Vol 7 (59) ◽  
pp. 37441-37446 ◽  
Author(s):  
Qingzhi Wang ◽  
Jiankun Liu ◽  
Lingqing Wang
Keyword(s):  
Experimental Study ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Phosphorus Adsorption ◽  
Soil P ◽  
Freeze Thaw ◽  
Chemical Properties Of Soils ◽  
Adsorption Desorption ◽  
Physical And Chemical ◽  
And Chemical Properties

Freeze–thaw cycles (FTCs) can strongly influence the physical and chemical properties of soils in cold regions, which can in turn affect the adsorption–desorption characteristics of phosphorus (P) in the soil.

scholarly journals Diamonds on Diamond: structural studies at extreme conditions on the Diamond Light Source

2015 ◽  
Vol 373 (2036) ◽  
pp. 20130158 ◽  
Author(s):  
M. I. McMahon
Keyword(s):  
Atmospheric Pressure ◽  
Structural Information ◽  
Chemical Properties ◽  
High Energy ◽  
Extreme Conditions ◽  
Single Crystal Diffraction ◽  
Diamond Anvil ◽  
Properties Of Materials ◽  
Physical And Chemical ◽  
And Chemical Properties

Extreme conditions (EC) research investigates how the structures and physical and chemical properties of materials change when subjected to extremes of pressure and temperature. Pressures in excess of one million times atmospheric pressure can be achieved using a diamond anvil cell, and, in combination with high-energy, micro-focused radiation from a third-generation synchrotron such as Diamond, detailed structural information can be obtained using either powder or single-crystal diffraction techniques. Here, I summarize some of the research drivers behind international EC research, and then briefly describe the techniques by which high-quality diffraction data are obtained. I then highlight the breadth of EC research possible on Diamond by summarizing four examples from work conducted on the I15 and I19 beamlines, including a study which resulted in the first research paper from Diamond. Finally, I look to the future, and speculate as to the type of EC research might be conducted at Diamond over the next 10 years.

scholarly journals Metabolomics of Pseudomonas aeruginosa Treated by Atmospheric-Pressure Cold Plasma

2021 ◽  
Vol 11 (22) ◽  
pp. 10527
Author(s):  
Dehui Xu ◽  
Xinying Zhang ◽  
Jin Zhang ◽  
Rui Feng ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Atmospheric Pressure ◽  
Cold Plasma ◽  
Chemical Properties ◽  
Flight Mass Spectrometry ◽  
Active Particles ◽  
Plasma Device ◽  
Physical And Chemical ◽  
Plasma Activated Water ◽  
And Chemical Properties

With increasing drug resistance of Pseudomonas aeruginosa, a new sterilization method is needed. Plasma has been shown to be an effective method of sterilization, but no researchers have studied the effect of plasma on bacterial metabolism. In this paper, we studied the emission spectrum, liquid phase active particles, and other physical and chemical properties of a portable plasma device. Pseudomonas aeruginosa were then treated with activated water generated by surface plasma discharge. Using gas chromatography time-of-flight mass spectrometry (GC-TOF-MS) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, we obtained the differential metabolite pathways. The results showed that, after plasma activated water treatment, the carbohydrate metabolism of the bacteria was inhibited and the metabolic processes of protein and amino acid decomposition were enhanced. Therefore, water activated by atmospheric-pressure cold plasma can significantly change bacterial metabolites, thus promoting bacterial death.

Effects of coal storage in air on physical and chemical properties of coal and on gas adsorption

2009 ◽  
Vol 79 (4) ◽  
pp. 167-174 ◽  
Author(s):  
Maria Mastalerz ◽  
Wilfrido Solano-Acosta ◽  
Arndt Schimmelmann ◽  
Agnieszka Drobniak
Keyword(s):  
Gas Adsorption ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

scholarly journals Cyclodextrins: Structural, Chemical, and Physical Properties, and Applications

2021 ◽  
Vol 3 (1) ◽  
pp. 1-31
Author(s):  
Benjamin Gabriel Poulson ◽  
Qana A. Alsulami ◽  
Abeer Sharfalddin ◽  
Emam. F. El Agammy ◽  
Fouzi Mouffouk ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Chemical Properties ◽  
Aqueous Solubility ◽  
Industrial Applications ◽  
Physical And Chemical Properties ◽  
To Come ◽  
Novel Applications ◽  
Physical And Chemical ◽  
And Chemical Properties

Due to their unique structural, physical and chemical properties, cyclodextrins and their derivatives have been of great interest to scientists and researchers in both academia and industry for over a century. Many of the industrial applications of cyclodextrins have arisen from their ability to encapsulate, either partially or fully, other molecules, especially organic compounds. Cyclodextrins are non-toxic oligopolymers of glucose that help to increase the solubility of organic compounds with poor aqueous solubility, can mask odors from foul-smelling compounds, and have been widely studied in the area of drug delivery. In this review, we explore the structural and chemical properties of cyclodextrins that give rise to this encapsulation (i.e., the formation of inclusion complexes) ability. This review is unique from others written on this subject because it provides powerful insights into factors that affect cyclodextrin encapsulation. It also examines these insights in great detail. Later, we provide an overview of some industrial applications of cyclodextrins, while emphasizing the role of encapsulation in these applications. We strongly believe that cyclodextrins will continue to garner interest from scientists for many years to come, and that novel applications of cyclodextrins have yet to be discovered.

scholarly journals Asbestos manufacturing plants in Poland

2014 ◽  
Vol 18 (2) ◽  
pp. 53-58 ◽  
Author(s):  
Ewa Wilk ◽  
Małgorzata Krówczyńska ◽  
Bogdan Zagajewski
Keyword(s):  
Soviet Union ◽  
Former Soviet Union ◽  
Raw Materials ◽  
Chemical Properties ◽  
Industrial Applications ◽  
Manufacturing Plants ◽  
Composition Materials ◽  
Current Survey ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract The unique set of physical and chemical properties of asbestos has led to its many industrial applications, such as roof coverings, textiles, rope, cord and yarn, paper, friction and composition materials, household product, acid-resistant filters, packing, insulation, and certain types of lagging, amongst others. In Poland asbestos-containing products were manufactured from raw materials imported mainly from the former Soviet Union, with production launched at the beginning of 20th century. According to Annex 4 to the Act of 19 June 1997 on the prohibition of the use of asbestos-containing products, there were 28 asbestos manufacturing plants in Poland located in 11 provinces throughout the country. The current survey was undertaken to enable asbestos manufacturing plants to be arranged, described and divided in order to contribute to further surveys.

Estimation of the amount of asbestos-cement roofing in Poland

2017 ◽  
Vol 35 (5) ◽  
pp. 491-499 ◽  
Author(s):  
Ewa Wilk ◽  
Małgorzata Krówczyńska ◽  
Piotr Pabjanek ◽  
Piotr Mędrzycki
Keyword(s):  
Regional Differences ◽  
Chemical Properties ◽  
Industrial Applications ◽  
Asbestos Cement ◽  
Forest Models ◽  
Random Forest Models ◽  
Resources Distribution ◽  
Physical And Chemical ◽  
Adequate Data ◽  
And Chemical Properties

The unique set of physical and chemical properties has led to many industrial applications of asbestos worldwide; one of them was roof covering. Asbestos is harmful to human health, and therefore its use was legally forbidden. Since in Poland there is no adequate data on the amount of asbestos-cement roofing, the objective of this study was to estimate its quantity on the basis of physical inventory taking with the use of aerial imagery, and the application of selected statistical features. Data pre-processing and analysis was executed in R Statistical Environment v. 3.1.0. Best random forest models were computed; model explaining 72.9% of the variance was subsequently used to prepare the prediction map of the amount of asbestos-cement roofing in Poland. Variables defining the number of farms, number and age of buildings, and regional differences were crucial for the analysis. The total amount of asbestos roofing in Poland was estimated at 738,068,000 m2 (8.2m t). It is crucial for the landfill development programme, financial resources distribution, and application of monitoring policies.

Construction of a series of metal-directed MOFs to explore their physical and chemical properties

2021 ◽  
Vol 45 (14) ◽  
pp. 6438-6449
Author(s):  
Sohel Akhtar ◽  
Pabitra Singha ◽  
Avik De ◽  
Krishna Sundar Das ◽  
Sayan Saha ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Catalytic Reduction ◽  
Dye Degradation ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Heterogeneous Catalytic ◽  
Polymeric Networks ◽  
Photocatalytic Dye Degradation ◽  
Physical And Chemical ◽  
And Chemical Properties

Here, we report a series of metal-directed coordination polymers and explore their various properties. The polymeric networks show interesting properties such as selective CO2 gas adsorption, Fenton-type photocatalytic dye degradation and heterogeneous catalytic reduction of 4-nitrophenol.

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