An analytical method using silica supported silver nanoparticles as a novel sorbent for the enrichment and determination of inorganic mercury (iHg) in surface water samples has been developed. Silver nanoparticles (AgNPs) were synthesized by a completely green procedure and were deposited onto the amine functionalized surface of silica submicrospheres (SiO2-NH2). The prepared nanocomposite mate...

Metal-organic frameworks are a class of crystalline porous materials with potential applications in catalysis, gas separation and storage, and so on. Of great importance is the development of innovative synthetic strategies to optimize porosity, composition and functionality to target specific applications. Here we show a platform for the development of metal-organic materials and control of th...

A bis(phosphonatemonoester) is employed as a linker in a Zn(II) metal organic framework. The complex is a layered structure pillared only by vdW interactions between alkyl groups. Nonetheless, permanent pores are formed as confirmed by PXRD and gas sorption analysis.

Chlor-alkali plants are known to be an important source of Hg emissions to the atmosphere and related contamination of soils in their vicinity. In the present study, the results of Hg speciation and mobility of Hg in soils affected by Hg emissions from three chlor-alkali plants are compared. Solid phase mercury speciation analyses was carried out using a mercury-thermo-desorption technique with...

Abstract Chemically-modified alginate (obtained by grafting urea on alginate, with different ratios; alginate-urea ( 1:1 ) and its new derivatives 1:2 an exceed of the percent amino group 7 %) was successfully tested for mercury sorption in aqueous solutions. The influence pH metal first investigated: optimum close to 5.5. Sorption isotherms were modeled using Langmuir Sips equations, capacity ...

Mercury thrown even at low concentrations in water resources causes a severe threat to the ecosystem hence presented work describes low-cost and environmentally friendly clean-up platform for decontamination of terms mercury ions. For this purpose, MgFe2O4—Gum Arabic composite was prepared with simple ultrasound-assisted precipitation route further modified l-Cysteine as thiol resource improve ...

Nitrogen Sorption, Mercury Porosimetry, and Nuclear Magnetic Resonance Cryoporometry are characterization techniques used to obtain qualitative quantitative information about the textural properties of porous materials. The physical phenomena exploited in each technique related mechanical thermodynamic equilibria conditioned by pore blocking. latter phenomenon becomes relevant highly disordered...

Nanoporous frameworks are polymeric materials built from rigid molecules, which give rise to their nanoporous structures with applications in gas sorption and storage, catalysis and others. Conceptually new applications could emerge, should these beneficial properties be manipulated by external stimuli in a reversible manner. One approach to render nanoporous frameworks responsive to external s...

Pore structure and network configuration in shales greatly impacts physical processes important for hydrocarbon migration, methane extraction, gas storage, or carbon sequestration. The multi-scale nature of the porosity presents significant challenges to its comprehensive accurate characterisation. under-used overcondensation technique can bridge characterisation micropores, below detection lim...

The research presented by the authors in this paper focused on understanding behavior of mercury during coal combustion and flue gas purification operations. goal was to determine temperature emissions limits for lignites energy sector. examined process sorption from gases using fine-grained organic materials. main objectives study were recommend a low-cost adsorbent such as coke dust (CD), cor...