Department of Chemistry and Materials Science

Nanochemistry and Nanoengineering

We, NanoChem & NanoEng Group, put forward innovative research and development in the field of nanotechnology under the umbrella of sustainability and environment-friendliness, so that the group designs, synthesizes, and engineers out-of-the-box green nanotechnological solutions to tackle the world's current crises in the sectors of energy, environment, and life science.
NanoChem&NanoEngi Cover

Key research areas:

  1. The Leidenfrost Chemistry

  2. Bio-Nanoengineering

  3. Functional Bio-Nanocomposites

  4.  Plasmonic and Photonic devices based on ultrathin metasurfaces

  5. Functional Electrospun Nanofibers for advanced applications

 

Utilizing wet chemistry e.g. the Leidenfrost technique, electrospinning, physical vapor deposition, biogenic approaches and a combination thereof, we devise advanced nanomaterials as neat and composite. Such multifunctional materials are exploited for energy saving, advanced coating, plasmonic and photonic metasurfaces, water purification e.g. via solar irradiation as well as sensing and nanomedicine. Our works are interdisciplinary and thus multi-institutional and on an international scale.

Prof. Mady Elbahri

When Science meets Education, it reveals an Aha effect!

Mady Elbahri, 2018

Brief about the research topics:

 

1) The Leidenfrost chemistry:

The hydrodynamic chemistry at the Leidenfrost condition is utilized as a novel and unique nanochemistry discipline. In this area of research, we focus on the production of nanoparticles of different materials (metals, metal-oxides, and bio-minerals) in different sizes and morphologies. For this sake, we have established a novel green nano-synthesis approach, which is fast, cost-effective and simple, to produce large quantities of quasi-monodisperse particles in a controlled manner. Our aim has been an environmentally friendly fabrication of nanoparticles for potential applications of catalysis, photonics, sensing, and biomedicine.

  • New directions: The self-organized mesostructures have great potential for energy storage and conversion applications. In this regard, electrocatalysts with tailored morphology, size and composition can open up a new pathway to enhanced, selective electrochemical conversion with respect to CO2 reduction, water splitting, O2 reduction, etc.

2) Bionanoengineering:

The ability to control the fine structure of materials on the nanoscale provides an unprecedented opportunity to develop new and improved biologically active materials.  At this level, human cells, as well as microorganisms, can interact with materials on their own terms, i.e. they can manipulate themselves mechanically around nanostructures or interact with them chemically through individual biomolecules.

We explore these phenomena progressing at the bio-nano interface to develop new technologies and devices for recognition (biosensing), prevention (antimicrobial agents) and therapy. Our research has several main facets:  1) studying the effects of nanoparticles’ size and morphology on the cellular uptake for direct therapeutic effects as well as for drug delivery, and 2) using nanoengineered materials for rebuilding or augmenting human tissues, through tunable cellular growth on surfaces and for killing harmful microorganisms.

3) Functional Bionanocomposites:

Nature has a wide variety of fascinating and unique structures and functions that are worth learning from and applying their principles in an artificial manner. Bioinspired synthesis of nanomaterials is an attractive field for nanochemists. Recently, there has been an increased interest in the synthesis of nanocolloids and bionancomposite systems in a biomineralization-like fashion. However, making such hybrids in a controlled manner and on a large scale has yet to be explored thoroughly.  Mimicking the bio-functions is our ultimate goal. We are interested in understanding some of the basic principles of biological architectures to mimic their structure and function. This comprehension is vital in the design of hierarchical, multifunctional bio‑nanocomposites with tailored smart responses.

4) Plasmonic and Photonic devices based on ultrathin metasurfaces:

Solar energy is more favorable than any other source of energy because it is clean and inexhaustible. In the field of plasmonics and photonics, much attention has been paid to the novel approaches of concentration and manipulation of light to improve the absorption and/or transmission of optical devices. Such devices are urgently needed for a wide variety of energy applications ranging from transparent electrodes and energy-saving windows to solar energy absorbers, thermoelectrics, and photovoltaics.

  • New directions: Plasmonic metamaterials based on hybrid metal/metal oxide are artificial structures with exotic electrocatalytic properties coming from their plasmon resonances and energy transferability. Recently, these topics have attracted the attention because of their great potential for energy. In our research group, we are dealing with the mentioned concept for both thermal energy harvesting and developing photo-assisted electrocatalysts for energy conversion and environmental applications such as water splitting and CO2 electroreduction.

5) Functional Electrospun Nanofibers for advanced applications:

The electrospinning technique is a well-known process for making continuous sub-micron to nano-size fibers in a nonwoven mat form. Such thin fibers provide unexpectedly high surface area to volume ratios and are of interest for many applications ranging from textile to composite reinforcement, biomaterials, membranes, and sensors. As a result of their high interconnected porosity (>90%) and tunable pore size, electrospun nanofibrous mats show an extraordinary permeability and selectivity thereby a very high potential for filtration applications as a membrane. In our group, we aim to develop functional electrospun nanofibrous membranes for a diverse range of applications including water treatment and gas filtration.

  • New directions: Mesofibers with unique 3D morphology and high surface area to volume ratio are unique structural elements for energy and sensing applications. Such characteristics enhance the catalytic properties and offer a higher sensing efficiency. In our group, we are working on developing and designing mesofibers for CO2 capture and conversion into more economical products such as alcohols. Furthermore, we are aiming to utilize these high surface area mesofibers as a support material for different types of catalysts in various applications such as energy conversion and sensing applications.

Related news:

The German Society of Material Science awards Professor Mady Elbahri the DGM prize of 2020

The Deutsche Gesellschaft für Materialkunde e.V. (DGM) has recognized Professor Mady Elbahri at the School of Chemical Engineering, for his outstanding scientific achievements in the field of Nanoscience and nanotechnology.

Professor Mady Elbahri

A novel approach to construct a highly active and durable nanocatalyst offers solutions to energy storage problems

A green, simple and easy method opens up new possibilities for MOF-based nanocatalysts.

Nanocatalyst

Plasmonic biosensors enable development of new easy-to-use health tests

A biosensor developed at Aalto University enables creating a range of new health tests similar to home pregnancy tests.

Visualizing the specular reflection color by a blackbody substrate. The carriers containing Ag nanoparticles are covered with various dielectrics of AlN, SiO2 and the composites thereof that are placed on a black background to enhance the reflectivity contrast of various colours at a normal angle of incidence. (Photo: Aalto University)

Researchers create anticancer nanomaterials by simulating underwater volcanic conditions

The novel method enables making nanoclusters of zinc peroxide in an environmentally friendly manner.

Join us!

Nanochemistry and Nanoengineering Group is always open to multidisciplinary collaborations and welcomes students whom are willing to become the future game changers!  For more info please contact Mady.elbahri(@)aalto.fi

Group Pic
Our team

Latest publications

Mechanical and tribological properties of WO2.9 and ZrO2 + WO2.9 composites studied by nanoindentation and reciprocating wear tests

M. Erkin Cura, Michal Trebala, Yanling Ge, Piotr Klimczyk, Simo-Pekka Hannula 2021 Wear

Nanotheranostics

Dina A. Mosselhy, Mhd Assad, Tarja Sironen, Mady Elbahri 2021 Nanomaterials

Evolution of carbon nanostructure during pyrolysis of homogeneous chitosan-cellulose composite fibers

Hilda Zahra, Daisuke Sawada, Shogo Kumagai, Yu Ogawa, Leena-Sisko Johansson, Yanling Ge, Chamseddine Guizani, Toshiaki Yoshioka, Michael Hummel 2021 Carbon

Bacterial Cellulose: Functional Modification and Wound Healing Applications

Wei He, Jian Wu, Jin Xu, Dina A. Mosselhy, Yudong Zheng, Siming Yang 2021 ADVANCES IN WOUND CARE

COVID-19 pandemic : What about the safety of anti-coronavirus nanoparticles?

Dina A. Mosselhy, Jenni Virtanen, Ravi Kant, Wei He, Mady Elbahri, Tarja Sironen 2021 Nanomaterials

Could Nanotheranostics be the Answer to the Coronavirus Crisis?

Dina A. Mosselhy, Mhd Adel Assad, Tarja Sironen, Mady Elbahri 2021 Global Challenges - An Innovative Journal for Tackling Humanity's Global Challenges

An overview of the water remediation potential of nanomaterials and their ecotoxicological impacts

Mehrnoosh Ghadimi, Sasan Zangenehtabar, Shahin Homaeigohar 2020 Water (Switzerland)
More information on our research in the Research database.
Research database
  • Published:
  • Updated:
Share
URL copied!