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

News and information

New class of protein misfolding simulated in high definition: Evidence for recently identified and long-lasting type of protein misfolding bolstered by atomic-scale simulations and new experiments August 8th, 2025

Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025

Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025

Lab to industry: InSe wafer-scale breakthrough for future electronics August 8th, 2025

Chemistry

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

Single-atom catalysts change spin state when boosted by a magnetic field June 4th, 2025

Quantum interference in molecule-surface collisions February 28th, 2025

Chainmail-like material could be the future of armor: First 2D mechanically interlocked polymer exhibits exceptional flexibility and strength January 17th, 2025

Govt.-Legislation/Regulation/Funding/Policy

New imaging approach transforms study of bacterial biofilms August 8th, 2025

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

Possible Futures

ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025

New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025

Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025

First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025

Discoveries

Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025

ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025

New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025

Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025

Materials/Metamaterials/Magnetoresistance

First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025

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

Announcements

Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025

Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025

Japan launches fully domestically produced quantum computer: Expo visitors to experience quantum computing firsthand August 8th, 2025

ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025

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

New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025

Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025

First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025

Lab to industry: InSe wafer-scale breakthrough for future electronics August 8th, 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