- Functionalized Carbon Nano-particulates: Interesting Building Blocks in Sensing
- Functionalization of carbon nano-particulates (includes nanoparticle and quantum dots) has developed a novel active high surface area electrode materials as nano-building blocks in electroanalysis and luminescence analysis to progress sensor technology. With previous applications of bare carbon nanoparticulates and composites mainly in electrochemical charge storage and as substrates in fuel cell devices, the full range of benefits of bare and functionalized carbon nanoparticles in assemblies and composite electrodes is still emerging. Carbon nanoparticles are readily surface-modified, functionalized, embedded or assembled into nanostructures, employed in electrochemical and optical systems, and incorporated into novel electrochemical and optical sensing devices. Our research group has developed covalent and non-covalent approaches for functionalization of carbon nanoparticles to create new building blocks with improving physical and chemical properties, increasing sensitivity and selectivity for electrochemical sensing of biological, pharmaceutical and environmental compounds.
- Electrochemical water Oxidation
Great attention has focused recently on hydrogen gas as a potential energy source. At present, hydrogen is mainly produced from fossil resources through a steam reforming process, which accelerates fossil fuel depletion and CO2 emission. In view of environmental issues, splitting of water into oxygen and hydrogen gas during water electrolysis is a clean alternative to generate hydrogen with high purity. Next to using UV and solar energy for the photolysis of water, hydrogen production by electrolysis of water is an appealing way. Electrochemical water splitting is composed of two halfreactions: the hydrogen evolution reaction (HER) on the cathode and the oxygen evolution reaction (OER) on the anode. While offering an effective way to make high purity hydrogen, the practical use of electrochemical water splitting for mass hydrogen production is limited. The bottleneck of electrochemical water splitting is the slow kinetics of the oxygen evolution reaction (OER) due to the 4 electron transfer process (2H2O → O2 + 4e− + 4H+). It is thus attractive to design efficient water-splitting catalysts and great progress has been made over the past years in developing efficient low-cost alternatives.
M. Amiri et al. J. Phys. Chem. C, 2018, 122 (29), pp 16510–16518
- Pathogen Matrix Imprinting Senso
- Bacterial infections remain one of the principal causes of morbidity and mortality worldwide. The number of deaths due to infections is declining every year by only 1% with a forecast of 13 million deaths in 2050. Among the 1400 recognized human pathogens, the majority of infectious diseases is caused by just a few, about 20 pathogens only. While the development of vaccinations and novel antibacterial drugs and treatments are at the forefront of research, and strongly financially supported by policy makers, another manner to limit and control infectious outbreaks is targeting the development and implementation of early warning systems, which indicate qualitatively and quantitatively the presence of a pathogen. A great challenge in this field is therefore to develop rapid, sensitive, specific, and if possible miniaturized devices to validate the presence of pathogens in cost and time efficient manners.