NTU Chemical Engineering – Faculty

Biography:
Dr. Naoufel Khemiri is an Assistant Professor at El Manar Preparatory Engineering Institute in Tunisia. He obtained his Ph.D thesis in “Condensed Matter Physics” from the Faculty of Sciences of Tunis (FST), University of Tunis El Manar, Tunisia in 2012. He is now member of Photovoltaic and Semiconductor Materials Laboratory (ENIT, Tunis, Tunisia). He works mainly on the synthesis and the characterization of ternary and quaternary compounds (CuInS2, Zn(S,O), SnSb4S7, Cu2ZnSnS4 and Cu2ZnxFe1-xSnS4) for opto-electronic and solar cell applications. He published more than 20 papers in International Journals with impact factor and participated in several international conferences in materials science.

Hua Zhang - Nanyang Technological University, Singapore

Abstract:
Self-protective/self-healing coatings are imperative for sustained corrosion protection and to minimise economic losses. The present research focuses on this premise. We report here the synthesis of a series of new effective organic corrosion inhibitors for corrosion protection of the aluminium alloy - AA2024-T3. The synthesized inhibitors were encapsulated in silica nano-containers and doped in GPTMS – Titanium isopropoxide based sol-gel coatings for “on-demand” release of the inhibitor. Anticorrosion behaviour of uncoated and coated coupons was characterized by Electrochemical impedance spectroscopy (EIS). The immersion time for evaluating the sustainability of the coatings in 3.5% NaCl was 168h as per MIL’s specifications. The localized corrosion and dissolution of the intermetallic particles (S & Ө phases) on the aluminium alloy was examined by using field emission scanning electron microscopy attached with energy dispersive X- ray spectroscopy, X-ray photoelectron spectroscopy and 3D profilometry. The acquired results revealed that, the synthesized inhibitors offered sustained corrosion protection to AA2024-T3. The coupons qualified salt spray test as per ASTM standard B117. The mechanism of action appeared to be formation organic thin layer of insoluble complex on the surface, thereby preventing the dislodgement of the inter-metallics and pitting corrosion characteristic of the AA2024-T3 alloy.


Adriano Ambrosi received his Ph.D

29/01/2010 · 1) If I want to take H3 chem at the end of J1, should I take NTU's Organic synthesis and mechanism or Pharmaceutical Chemistry?

In recent years, multifunctional nanoparticles (NPs) consisting of either metal (e.g. Au), or magnetic NP (e.g. iron oxide) with other fluorescent components such as quantum dots (QDs) or organic dyes have been emerging as versatile candidate systems for cancer diagnosis, therapy, and macromolecule delivery such as micro ribonucleic acid (microRNA). This review intends to highlight the recent advances in the synthesis and application of multifunctional NPs (mainly iron oxide) in theranostics, an area used to combine therapeutics and diagnostics. The recent applications of NPs in miRNA delivery are also reviewed.


[Chemistry] - H3 Pharma Chem vs H3 NTU O.C

Ionic liquids are considered as organic solvents with high polarity and a pre-organized solvent structure. Crystalline NPs can be synthesized by using ionic liquid at ambient temperature []. Warner and coworkers have developed magnetic NPs coated with a group of uniform materials based on organic salts by using ion exchange water-in-oil (w/o) microemulsion approach []. These MNPs could potentially be applied in drug delivery, MRI and protein separations.

Effect of each additive depends on its mechanism …

Martin Pumera has been a faculty member at Nanyang Technological University (Singapore) since 2010. He received his Ph.D. at Charles University (Prague, Czech Republic), in 2001. After two postdoctoral stays (in the Unted States and Spain), he joined the National Institute for Materials Science (Tsukuba, Japan) in 2006 for a tenure-track arrangement, and in 2008, he accepted a tenured position there. In 2009, Prof. Pumera received an ERC-StG award. Prof. Pumera has broad interests in nanomaterials and microsystems, in the specific areas of electrochemistry and synthetic chemistry of carbon nanomaterials, nanomotors, nanotoxicity, and energy storage devices. He is Associate Editor of and on the Editorial Board of , , , , , , and eight other journals. He has published over 270 peer-reviewed articles and has an h-index of 44.