My Study
Our lives depend heavily on energy from fossil fuels. For this reason, fossil fuel consumption is intense and its exhaustion has become a serious problem on a global scale in recent years. Against such a background, a new sustainable energy supply source is needed to replace fossil fuels. Therefore, interest in biomass as an energy source other than fossil fuel is increasing. Since biomass is not an exhaustible resource, it is expected to be beneficial to the formation of a recycling-oriented society for sustainable regeneration. In recent years, fuel cells such as fuel cell vehicles and energy firms have been widespread, but have problems such as high cost due to the use of noble metal catalysts and the use of fossil fuels for the production of fuel hydrogen. On the other hand, a method that can use organic waste containing biomass directly as a fuel is a bio cell. Bio cells are those that modify enzymes and microorganisms as electrode catalysts on electrodes and generate electricity from these sewage sludge by using energy metabolism using sugars, alcohols such as alcohols as fuel. Amines, hydrogen, inorganic substances and the like can be used as an energy source other than sugar and alcohol. Therefore, bio cells using microbial enzymes can use various substances as fuel. The advantage of the bio-cell is that since the enzyme is used as a catalyst, it can be operated at room temperature, handling is safe, cell weight can be reduced and downsized. Therefore, so many research examples have been reported so far. However, since bio cells use enzymes as catalysts, low-temperature stability is low and output is lowered due to low electron transfer efficiency. Improvement of these problems is necessary for practical application of bio batteries. For this reason, in order to produce high performance bio devices such as bio cells, electrode interfacial design is required which enables highly efficient enzymatic reaction and electrode transfer efficiency at the electrode surface to be maximized. So, I focused on the pH value near the electrode surface. I make pH responsive probe-self assembled monolayer (SAM) modified Au electrode. This electrode is used for investigation of pH behavior of electrode interface. The pH behavior in the vicinity of the electrode surface was analyzed by observing the change of the pH responsive probe on the prepared electrode surface using the microscope. Quantification of SAM will be carried out using cyclic voltammetry (CV) measurement. But the experiment has not gone well yet. In the future, we plan to make new evaluations utilizing the data up to the past.