نتایج جستجو برای: eco friendly technology

تعداد نتایج: 517957  

Silver nanoparticles (AgNPs) are amongst the most investigated materials in nanotechnology in view of their unique physio-chemical features and applications in restorative science. Their progressive usages in different fields of science besides some predominant restrictions with conventional methods for their synthesis have demanded analysts to discover green courses for their creation. Biologi...

Journal: :Chemical communications 2012
Souad Touati Hela Mansouri Abdelkader Bengueddach André de Roy Claude Forano Vanessa Prevot

Aerogels of layered double hydroxides were prepared by a simple and eco-friendly method involving a quick coprecipitation followed by supercritical CO(2) drying. Such aerogels display high surface areas and enhanced adsorption behavior.

Journal: :Chemical communications 2014
Somnath Mukherjee Congdi Shang Xiangli Chen Xingmao Chang Kaiqiang Liu Chunmeng Yu Yu Fang

Two simple, eco-friendly and efficient phase-selective gelators were developed for instant (<45 s) gelation of oil (either commercial fuels or pure organic liquids) from an oil-water mixture at room temperature to combat marine oil spills.

2013
S. Ramesh

Plants in urban areas play an essential role to cleanse the pollution in human environment. The paper describes the choice of eco–friendly plant species and their right placement in the urban environment to overcome the pollution problems.

2016
Yongmei Xu Huaizhi Xie Y. M. Xu H. Z. Xie

Considering the impact of products’ eco-friendly level on demand, a two-stage closed-loop supply chain composed by a single manufacturer and a single retailer is constructed. Under both decentralized and centralized decision-making models, the paper deeply researches into the difference of supply chain system in economic benefits, environmental protection and social benefits, and a revenue shar...

2012
Amit Pramanik Manabendra Saha Sanjay Bhar

An eco-friendly "on-water" protocol for efficient catalyst-free synthesis of the Hantzsch dihydropyridines from aryl, heteroaryl, alkyl, and vinylogous aldehydes has been developed with minimum auxiliary substances, toxic reagents, organic solvents, and disposal problems.

The present study, for the first time, presents a feasible protocol for the preparation of β-cyclodextrin/ imidazolium based dicationic ionic liquid, [βCD/Im](OTs)2, and its application as an efficient and eco-friendly microvessel and host ionic liquid system for the regioselective ring opening of the epoxides in water. No evidence for the formation of diol by-products or side reacti...

The present study, for the first time, presents a feasible protocol for the preparation of β-cyclodextrin/ imidazolium based dicationic ionic liquid, [βCD/Im](OTs)2, and its application as an efficient and eco-friendly microvessel and host ionic liquid system for the regioselective ring opening of the epoxides in water. No evidence for the formation of diol by-products or side reacti...

Journal: :journal of nanostructures 2012
a. bamoniri b. f. mirjalili s. nazemian

two  simple  protocols  for  the  synthesis  of  1,  2,  4,  5-  tetrasubstitutedimidazoles  using  nano-spa  as  a  reusable,  eco-  friendly,  inexpensive,  and  efficient  catalyst  are  reported.  short   reaction  times,  high  yields,  scale-up  and  easy  workup  are  the   advantages of these protocols.

Biological synthesis of metallic nanoparticles is considered as a fast, eco-friendly, affordable and easily scalable technology. Also, the nanoparticles produced by plants are very stable. In this study, the focus is on the synthesis of silver nanoparticles using extract of eryngium campestre. The effective parameters such as concentration of silver nitrate, pH, temperature and time, size and m...

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