scholarly journals Role of metal species in flocculation rate during estuarine mixing

2010 ◽  
Vol 7 (2) ◽  
pp. 327-336 ◽  
Author(s):  
A. Biati ◽  
A. R. Karbassi ◽  
A. H. Hassani ◽  
S. M. Monavari ◽  
F. Moattar
Keyword(s):  
Metal Species ◽  
Estuarine Mixing ◽  
Flocculation Rate

Green synthesis of silver nanoparticles using sustainable resources and their use as antibacterial agents: A review

2020 ◽  
Vol 13 ◽  
Author(s):  
Kumari Jyoti ◽  
Punyasloka Pattnaik ◽  
Tej Singh
Keyword(s):  
Silver Nanoparticles ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Cost Effective ◽  
Biological Properties ◽  
Metal Species ◽  
Sustainable Resources ◽  
Research Areas ◽  
Low Toxicity

Background:: Synthesis of metallic nanoparticles has attracted extensive vitality in numerous research areas such as drug delivery, biomedicine, catalysis etc. where continuous efforts are being made by scientists and engineers to investigate new dimensions for both technological and industrial advancements. Amongst numerous metallic nanoparticles, silver nanoparticle (AgNPs) is a novel metal species with low toxicity, higher stability and significant chemical, physical and biological properties. Methods:: In this, various methods for the fabrication of AgNPs are summarized. Importantly, we concentrated on the role of reducing agents of different plants parts, various working conditions such as AgNO3 concentration; ratio of AgNO3/extract; incubation time; centrifugal conditions, size and shapes. Results:: This study suggested that eco-friendly and non toxic biomolecules present in the extracts (e.g. leaf, stem and root) of plants are used as reducing and capping agents for silver nanoparticles fabrication. This method of fabrication of silver nanoparticles using plants extracts is comparatively cost-effective and simple. A silver salt is simply reduced by biomolecules present in the extracts of these plants. In this review, we have emphasized the synthesis and antibacterial potential of silver nanoparticles using various plant extracts. Conclusion:: Fabrication of silver nanoparticles using plant extracts have advantage over the other physical methods, as it is safe, eco-friendly and simple to use. Plants have huge potential for the fabrication of silver nanoparticles of wide potential of applications with desired shape and size.

The Role of Metal Species on Aldehyde Hydrogenation over Co 13 and Ni 13 Supported on γ‐Al 2 O 3 (110) Surfaces: A Theoretical Study

2020 ◽  
Vol 5 (13) ◽  
pp. 4058-4068
Author(s):  
Rusrina Salaeh ◽  
Kajornsak Faungnawakij ◽  
Nawee Kungwan ◽  
Pussana Hirunsit
Keyword(s):  
Theoretical Study ◽  
Metal Species

scholarly journals Revealing the unusual role of bases in activation/deactivation of catalytic systems: O–NHC coupling in M/NHC catalysis

2018 ◽  
Vol 9 (25) ◽  
pp. 5564-5577 ◽  
Author(s):  
Victor M. Chernyshev ◽  
Oleg V. Khazipov ◽  
Maxim A. Shevchenko ◽  
Andrey Yu. Chernenko ◽  
Alexander V. Astakhov ◽  
...  
Keyword(s):  
Metal Species ◽  
Catalytic Systems ◽  
Free Metal

Usual oxygen bases decompose M/NHC complexes to give “NHC-free” metal species and azolones.

Role of complexation processes in cadmium mobilization during estuarine mixing

Nature ◽  
1988 ◽  
Vol 336 (6195) ◽  
pp. 151-154 ◽  
Author(s):  
Rob N. J. Comans ◽  
Clemens P. J. van Dijk
Keyword(s):  
Estuarine Mixing

scholarly journals Lithium containing layered high entropy oxide structures

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Junbo Wang ◽  
Yanyan Cui ◽  
Qingsong Wang ◽  
Kai Wang ◽  
Xiaohui Huang ◽  
...  
Keyword(s):  
Single Phase ◽  
Structure Type ◽  
Metal Species ◽  
Icp Oes ◽  
High Entropy ◽  
Solution Structures ◽  
New Class ◽  
Nebulized Spray Pyrolysis

Abstract Layered Delafossite-type Lix(M1M2M3M4M5…Mn)O2 materials, a new class of high-entropy oxides, were synthesized by nebulized spray pyrolysis and subsequent high-temperature annealing. Various metal species (M = Ni, Co, Mn, Al, Fe, Zn, Cr, Ti, Zr, Cu) could be incorporated into this structure type, and in most cases, single-phase oxides were obtained. Delafossite structures are well known and the related materials are used in different fields of application, especially in electrochemical energy storage (e.g., LiNixCoyMnzO2 [NCM]). The transfer of the high-entropy concept to this type of materials and the successful structural replication enabled the preparation of novel compounds with unprecedented properties. Here, we report on the characterization of a series of Delafossite-type high-entropy oxides by means of TEM, SEM, XPS, ICP-OES, Mössbauer spectroscopy, XRD including Rietveld refinement analysis, SAED and STEM mapping and discuss about the role of entropy stabilization. Our experimental data indicate the formation of uniform solid-solution structures with some Li/M mixing.

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