Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Halloysite: Finally a promising natural nanomaterial? A research group of scientists from Kazan Federal University and Beijing University of Chemical Technology have recently presented a broad overview of halloysite clay tubes

a) This image shows loading clay nanotubes with drug from saturation solution. b,c) Mixing with drug solution, pumping out air, and pulling in drug molecules, washing, and loaded tubes.
CREDIT: the author's of the article
a) This image shows loading clay nanotubes with drug from saturation solution. b,c) Mixing with drug solution, pumping out air, and pulling in drug molecules, washing, and loaded tubes.

CREDIT: the author's of the article

Abstract:
Yuri Lvov and Rawil Fakhrullin of Bionanotechnology Lab, Kazan Federal University, in cooperation with Wencai Wang and Liqun Zhang of State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology have recently presented in Advanced Materials a broad scope of application of halloysite clay tubes .

Halloysite: Finally a promising natural nanomaterial? A research group of scientists from Kazan Federal University and Beijing University of Chemical Technology have recently presented a broad overview of halloysite clay tubes

Kazan, Russia | Posted on October 26th, 2015

Halloysite is a natural biocompatible nanomaterial available in thousands of tons at low price, which makes it a good candidate for nanoarchitectural composites. In chemical composition they are similar to kaolin and can be considered as rolled kaolin sheets with inner diameter of 10-20 nm, outer diameter of 40-70 nm and a length of 500-1500 nm. The internal side of halloysite is composed of Al2O3 while the external is mainly SiO2.

The inner lumen of halloysite may be adjusted by etching to 20-30% of the tube volume and used as natural nanocontainer for loading and sustained release of chemical agents. These ceramic nanotubes form a "skeleton" in the bulk polymers, enhancing the composite strength and adhesivity. These "skeleton bones" may be loaded with active compounds, like real bones are loaded with marrow, providing additional functionality for polymers (antimicrobial, anti-aging, anticorrosion, and flame-retardancy).

Halloysite tubes can encase enzymes for longer storage, higher temperature, and extended functionality, while the tube's opening allows for delivery of small substrate molecules into the tube interior for biocatalysis. Loading DNA into halloysite is another prospective research direction. As functional nanoblocks, halloysite tubes may be used for building on biological cells, like the formation of spore-like microbial shells providing microorganisms with additional functions.

In vitro and in vivo studies on biological cells and worms indicate the safety of halloysite, and furthermore, it can store and release molecules in a controllable manner, making these tiny containers attractive for applications in drug delivery, antimicrobial materials, self-healing polymeric composites, and regenerative medicine.

The material, however, is not biodegradable, as there are no biological mechanisms to degrade this alumosilicate clay in the body, and it cannot be injected in the blood intravenously, but rather may be used for external medical treatment with slow release of encapsulated drugs (e.g., in creams, implants, or wound treatment of tissues).

###

Acknowledgements

Yuri Lvov acknowledges support by the U.S. Department of Energy under EPSCoR Grant DE-SC0012432 with additional support from the Louisiana Board of Regents and an Alexander von Humboldt Foundation Prize. W.W. and L.Z. acknowledge support from the National Natural Science Foundation of China (51320105012 and 81330043) and the Beijing Nova Program (Z131102000413015). R.F. acknowledges support from the Russian Science Foundation grant No 14-14-00924. The authors thank A.S. Dubkova for technical help with pictures.

####

For more information, please click here

Contacts:
Yevgeniya Litvinova

7-843-273-7345

Copyright © Kazan Federal University

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

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Nanomedicine

Oregon State University research pushes closer to new therapy for pancreatic cancer May 6th, 2022

‘Smart’ diaper for bedside urine testing Peer-Reviewed Publication May 6th, 2022

New miniature heart could help speed heart disease cures: Boston University–led team has engineered a tiny living heart chamber replica to more accurately mimic the real organ and provide a sandbox for testing new heart disease treatments April 22nd, 2022

Injectable stem cell assembly for cartilage regeneration April 15th, 2022

Discoveries

Going gentle on mechanical quantum systems: New experimental work establishes how quantum properties of mechanical quantum systems can be measured without destroying the quantum state May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Materials/Metamaterials

When a band falls flat: Searching for flatness in materials: International collaboration, led by DIPC and Princeton, creates a catalogue of materials that could impact quantum technologies April 1st, 2022

Studying atomic structure of aluminum alloys for manufacturing modern aircraft March 25th, 2022

Unexplored dimensions of porous metamaterials: Researchers unlock hidden potential in a long-studied group of materials March 18th, 2022

Copper doping enables safer, cost-effective hydrogen peroxide production February 11th, 2022

Announcements

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Lightening up the nanoscale long-wavelength optoelectronics May 13th, 2022

On-Chip Photodetection: Two-dimensional material heterojunctions hetero-integration May 13th, 2022

Development of high-durability single-atomic catalyst using industrial humidifier: Identification of the operating mechanism of cobalt-based single-atomic catalyst and development of a mass production process. Utilization for catalyst development in various fields including fuel May 13th, 2022

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

Research partnerships

University of Strathclyde and National University of Singapore to co-ordinate satellite quantum communications May 13th, 2022

Rice ‘metalens’ could disrupt vacuum UV market: Solid-state nanophotonic technology could potentially replace cabinets of equipment May 6th, 2022

New quantum network shares information at a scale practical for future real-world applications: Researchers enable real-time adjustments to communication among three remote nodes in a quantum network April 22nd, 2022

Nanoclusters self-organize into centimeter-scale hierarchical assemblies April 22nd, 2022

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




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project