Preparation Of Nano Materials Modified Electrodes And Their Applications In Electrochemistry Of Proteins

Today, nano- science and technology has entered the limelight and has been investigated extensively by governments and scientists all over the world. It is out of question that the revolution of nano- technology is coming. During the past decades, nanostructured materials have brought new chances and challenges to physics, chemistry, biology, as well as all sectors of technology. Nanotech is in fashion, for there are fashion trends even in scientific world. We are on the verge of a new scientific and technological era, the standard of which is the nanostructured materials. In recent work, it has been discovered that materials in the nano- size scale (1~100nm) display size-dependent optical, magnetic, electronic and chemical properties. Except these, nanomaterials have unknown chemical and physical properties that differ greatly from the bulk substances. Therefore, nanoparticles can be applied to many fields, such as optical devices, electronic devices, catalysis, sensor technology, and biomolecular labeling, etc., which is also the reason that a burst of research activities have been focused on nanoparticles.Modified electrodes based on nanostructured materials combined with high surface area and good electrocatalytic abilities that can largely improve electrical responses and the detection sensitivity. Today, many wonderful nanostructured materials have been applied in electroanalytical chemistry and some important progresses along these topics have recently achieved.Biomacromolecula including proteins and enzymes are the primary groups of life. They are involved in metabolism and many other important physiological processes, which are characteristic of electron transter between theire oxidation and reduction states. Therefore, to study the process of life is to investigate the electron transmittion in essence.Direct electrochemistry of redox proteins and enzymes has aroused great interest in biological and bioelectrochemical fields. Studies on direct electrochemistry of redox proteins/enzymes can be used to extract essential physicochemical data concerning the kinetics and energetics of protein redox reactions, providing mechanistic studies of electron exchange among proteins in biological systems.