IONIZATION OF ORGANIC MOLECULES WITH METAL IONS FORMED IN THE LASER PLASMA

Author(s):  
V. V. Filatov ◽  
S. M. Nikiforov ◽  
V. V. Zelenov ◽  
A. V. Pento ◽  
A. B. Bukharina ◽  
...  
2001 ◽  
Vol 43 (6) ◽  
pp. 9-16 ◽  
Author(s):  
H.-C. Flemming ◽  
J. Wingender

Extracellular polymeric substances (EPSs) are involved in both detrimental and beneficial consequences of microbial aggregates such as biofilms, flocs and biological sludges. In biofouling, they are responsible for the increase of friction resistance, change of surface properties such as hydrophobicity, roughness, colour, etc. In biocorrosion of metals they are involved by their ability to bind metal ions. In bioweathering, they contribute by their complexing properties to the dissolution of minerals. The EPSs represent a sorption site for pollutants such as heavy metal ions and organic molecules. This can lead to a burden in wastewater sludge; on the other hand, the sorption properties can be used for water purification. Other biotechnological uses of EPS exploit their contribution to viscosity, e.g., in food, paints and oil-drilling ‘muds’; their hydrating properties are also used in cosmetics and pharmaceuticals. Furthermore, EPSs may have potential uses as biosurfactants, e.g., in tertiary oilproduction, and as biological glue. EPSs are an interesting component of all biofilm systems and still hold a large biotechnological potential.


2019 ◽  
Vol 91 (5) ◽  
pp. 865-874 ◽  
Author(s):  
Armando Córdova ◽  
Samson Afewerki ◽  
Rana Alimohammadzadeh ◽  
Italo Sanhueza ◽  
Cheuk-Wai Tai ◽  
...  

Abstract A sustainable strategy for the neat production and surface functionalization of nanocellulose from wood pulp is disclosed. It is based on the combination of organocatalysis and click chemistry (“organoclick” chemistry) and starts with nanocellulose production by organic acid catalyzed hydrolysis and esterification of the pulp under neat conditions followed by homogenization. This nanocellulose fabrication route is scalable, reduces energy consumption and the organic acid can be efficiently recycled. Next, the surface is catalytically engineered by “organoclick” chemistry, which allows for selective and versatile attachment of different organic molecules (e.g. fluorescent probes, catalyst and pharmaceuticals). It also enables binding of metal ions and nanoparticles. This was exemplified by the fabrication of a heterogeneous nanocellulose-palladium nanoparticle catalyst, which is used for Suzuki cross-coupling transformations in water. The disclosed surface functionalization methodology is broad in scope and applicable to different nanocelluloses and cellulose based materials as well.


2011 ◽  
Vol 991 (1-3) ◽  
pp. 18-23 ◽  
Author(s):  
Piotr Młynarz ◽  
Tomasz Ptak ◽  
Anna Czernicka ◽  
Radosław Pankiewicz ◽  
Karolina Gluza ◽  
...  

2017 ◽  
Vol 5 (18) ◽  
pp. 4511-4519 ◽  
Author(s):  
Yan Yang ◽  
Lian Chen ◽  
Feilong Jiang ◽  
Xiuyan Wan ◽  
Muxin Yu ◽  
...  

A multi-stimuli-responsive luminescent Ln-MOF (1), with a combination of exceptionally high thermal, air and chemical stabilities, as a turn-on/turn-off chemosensor for metal ions and small organic molecules is reported.


2016 ◽  
Vol 55 (5) ◽  
pp. 2261-2273 ◽  
Author(s):  
Si-Si Zhao ◽  
Jin Yang ◽  
Ying-Ying Liu ◽  
Jian-Fang Ma

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 64
Author(s):  
Muthaiah Shellaiah ◽  
Kien Wen Sun

Diamond electrodes have long been a well-known candidate in electrochemical analyte detection. Nano- and micro-level modifications on the diamond electrodes can lead to diverse analytical applications. Doping of crystalline diamond allows the fabrication of suitable electrodes towards specific analyte monitoring. In particular, boron-doped diamond (BDD) electrodes have been reported for metal ions, anions, biomolecules, drugs, beverage hazards, pesticides, organic molecules, dyes, growth stimulant, etc., with exceptional performance in discriminations. Therefore, numerous reviews on the diamond electrode-based sensory utilities towards the specified analyte quantifications were published by many researchers. However, reviews on the nanodiamond-based electrodes for metal ions and anions are still not readily available nowadays. To advance the development of diamond electrodes towards the detection of diverse metal ions and anions, it is essential to provide clear and focused information on the diamond electrode synthesis, structure, and electrical properties. This review provides indispensable information on the diamond-based electrodes towards the determination of metal ions and anions.


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