Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Density gradient ultracentrifugation for colloidal nanostructures separation and investigation

Abstract:
Density gradient ultracentrifugation (DGUC), as an effective method for the purification of nanomaterials, has attracted tremendou attentions of researchers. A recent review was reported by Science Bulletin, entitled "Density gradient ultracentrifugation for colloidal nanostructures separation and investigation" by Xiaoming Sun and Liang Luo et al from Beijing University of Chemical Technology. The authors systemtatically introduce the classification, mechanism and applications of density gradient ultracentrifugation (DGUC) with various separation examples, demonstrating the versatility of such an efficient separation technique.

Density gradient ultracentrifugation for colloidal nanostructures separation and investigation

Beijing, China | Posted on June 5th, 2018

Monodispersed nanoparticles and their assemblies have been demonstrated great application potentials due to their unique optical, electrical, magnetic and catalytic properties. During the last two decades, as the rapid development of nanomaterials, great progress of the synthetic methods of various monodispersed nanoparticles including semiconductors, metals and oxides have been made, and many assemblies based on single component or multicomponents have also been fabricated and demonstrated their unique functions. However, the synthetic repeatbility of monodispersed nanomaterials always remains a main limit of large-scale fabrications and applications. Further, rational design and synthesis of doped nanostructures with complicated components or complex structures such as core/shell structures, assymmetric structures, have become new issues in chemistry and material science, mainly due to the uncertain repeatibility. On the contrary, the separation methods for nanomaterial remain far behind. Typical methods such as membrane filtration, electrophoresis and magnetic field, also have many restraints and limited separation effect, which hinder the practical applications of nanodevices in various fields.

Aiming to solve the above issues, the DGUC technique, which was used to sort marcomolecules in biological field, has recently been demonstrated as an efficient way of sorting colloidal nanoparticles by several groups including Hersam's group and Sun's group. The DGUC can realize the separation of nanoparticles according to their differences in chemistry, structure, size and/or morphology. The authors introduced the classification, mechanism, applicability and instructions of DGUC, and demonstrated the applications including separation, purification and ultraconcentration of nanoparticles by DGUC, verifying the versatility. They further developed a new method "lab in a tube", which is helpful to monitor and get deeper insights of synthetic mechanism, in situ surface reactions and assembly processes.

###

This work was supported by the National Natural Science Foundation of China (NSFC), the National Key Research and Development Project of China (2016YFF0204402), the Program for Changjiang Scholars and Innovative Research Team in the University (IRT1205).

####

For more information, please click here

Contacts:
SUN Xiaoming

Copyright © Science China Press

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 Links

See the article: Pengsong Li, Anuj Kumar, Jun Ma, Yun Kuang, Liang Luo, Xiaoming Sun. Density gradient ultracentrifugation for colloidal nanostructures separation and investigation. Science Bulletin, 2018, 63(10): 645-662:

Related News Press

Chemistry

Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025

News and information

INRS and ELI deepen strategic partnership to train the next generation in laser science:PhD students will benefit from international mobility and privileged access to cutting-edge infrastructure June 6th, 2025

Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025

Quantum computers simulate fundamental physics: shedding light on the building blocks of nature June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

Govt.-Legislation/Regulation/Funding/Policy

INRS and ELI deepen strategic partnership to train the next generation in laser science:PhD students will benefit from international mobility and privileged access to cutting-edge infrastructure June 6th, 2025

Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025

Institute for Nanoscience hosts annual proposal planning meeting May 16th, 2025

Rice researchers harness gravity to create low-cost device for rapid cell analysis February 28th, 2025

Possible Futures

Ben-Gurion University of the Negev researchers several steps closer to harnessing patient's own T-cells to fight off cancer June 6th, 2025

Researchers unveil a groundbreaking clay-based solution to capture carbon dioxide and combat climate change June 6th, 2025

Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

Discoveries

Researchers unveil a groundbreaking clay-based solution to capture carbon dioxide and combat climate change June 6th, 2025

Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025

Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

Materials/Metamaterials/Magnetoresistance

Researchers unveil a groundbreaking clay-based solution to capture carbon dioxide and combat climate change June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

Institute for Nanoscience hosts annual proposal planning meeting May 16th, 2025

Superconductors: Amazingly orderly disorder: A surprising effect was discovered through a collaborative effort by researchers from TU Wien and institutions in Croatia, France, Poland, Singapore, Switzerland, and the US during the investigation of a special material: the atoms are May 14th, 2025

Announcements

INRS and ELI deepen strategic partnership to train the next generation in laser science:PhD students will benefit from international mobility and privileged access to cutting-edge infrastructure June 6th, 2025

Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025

Quantum computers simulate fundamental physics: shedding light on the building blocks of nature June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

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

Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025

Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025

Quantum computers simulate fundamental physics: shedding light on the building blocks of nature June 6th, 2025

A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025

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