Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Iranian Researchers Find New Application for Nanosilica as Dye Adsorbent

Abstract:
Researchers at Iran University of Science and Technology succeeded in improving the ability of nanosilica to adsorb acidic dyes by functionalizing porous nanosilica.

Iranian Researchers Find New Application for Nanosilica as Dye Adsorbent

Tehran, Iran | Posted on July 8th, 2012

Thousands of tons of various dyes are annually produced all over the world, from which 15% are wasted during the production or painting process, according to the statistics.

The wasted parts of dyes usually permeate to water sources and damage the environment. The dyes are required to be eliminated in order to purify the polluted water. Various methods have so far been proposed in order to remove the dyes, among which the adsorption method is more cost-effective.

In their studies, the researchers used porous nanosilica functionalized by ethylenediamine (SBA-3/EDA), aminopropyl (SBA-3/APTES), and pentaethylenehexamine (SBA-3/PEHA). Various investigations were carried out on such materials, suggesting that their adsorption capabilities were as follows: SBA-3/PEHA > SBA3/APTES > SBA-3/EDA > SBA-3‎.

According to the studies, SBA-3/PEHA was identified as a very good adsorbent of acidic dyes. The adsorption mechanism of such nanomaterials is based on the electrostatic attraction and hydrogen bond created between the adsorbent surface and acidic dyes.

The results of the observations showed that the adsorption of SBA-3/PEHA decreased when the pH value increased. The optimum temperature for adsorption process was reported to be 20C. The amount of adsorption decreases when the temperature increases.

The research has been published in detail in July 2012 in Dyes and Pigments.

####

For more information, please click here

Copyright © Fars News Agency

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

'Find the Lady' in the quantum world: International team of researchers presents method for quantum-mechanical swapping of positions October 18th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Chemistry

What can be discovered at the junction of physics and chemistry October 6th, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Chemical hot spots: Scanning tunneling microscopy measurements identify active sites on catalyst surfaces September 7th, 2017

More durable, less expensive fuel cells: University of Delaware researchers have developed a new technology that could speed up the commercialization of fuel cell vehicles September 5th, 2017

Discoveries

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

'Find the Lady' in the quantum world: International team of researchers presents method for quantum-mechanical swapping of positions October 18th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Announcements

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Water

Magnetized viruses attack harmful bacteria: Rice, China team uses phage-enhanced nanoparticles to kill bacteria that foul water treatment systems August 2nd, 2017

Bacteria-coated nanofiber electrodes clean pollutants in wastewater July 1st, 2017

Smart materials used in ultrasound behave similar to water, Penn chemists report June 16th, 2017

Plasmonics could bring sustainable society, desalination tech June 2nd, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project