The Cds/ti Electrodes And Cds/tio < Sub > 2 < / Sub > Electrode Preparation And Research Of Catalytic Performance Of Photoelectric

Recently, owing to the fact that oil and natural gas prices continue to rise and overuse leadto global warm, finding a sustainable energy seems to be more and more important. Solar energy,a genuine kind of inexhuastible energy, is coming into common people’s home. While more andmore people begin to accept the use of solar energy, such as solar energy water heater, but themainstream market solar battery materials are silica-based materials, the high cost of materials,limiting the popularity of solar energy. TiO₂is a kind of direct band gap semiconductor material,forbidden band width is3.2eV, since it has absorption coefficient high, photocatalytic stableperformance, resist radiation interference, low cost, simple and convenient synthesis process etc,and in the research field of catalytic materials gradually became the worldwide scholars’ focus, islikely to be the next generation of the mainstream of the photovoltaic cells, and instead of today’shigh prices on the market, the production of high energy consumption silicon crystal solar cell.First of all, this paper introduced the method and process of electrochemical deposition inCdS/Ti electrode, deeply discussed in the electroplating process, the potential and temperature,pH value, reactants concentration, time, magnetic mixer speed and many kinds of otherimportant parameters to CdS/Ti photoelectric influence on the performance of the electrode, thenfind out some important rules and how can produce high performance electrode and optimize theproduction process.Moreover, a deep research on CdS/Ti electrode photoelectric catalytic performance,comparing the different pH value, voltage, reactants concentration, different electrolyteconditions such as CdS/Ti electrode shows different photoelectric performance. Through theexperiments verify the repeatability and sustainability of the photoelectric catalytic activity, andthe results show that in the high pH value can generate large photocurrent; the voltage morepositive the greater the photocurrent, But voltage should not be too positive to prevent damageelectrode; to some extent, the high concentration of sacrificial agent will increase current, butvery limited. With Na₂S and Na₂SO₃electrolyte concentration is not very high even to get highcurrent. Discuss without the sulfur sacrificial agent for the protection of Na₂CO₃electrode andthe stability of the reaction of the photoelectric effect. And compare the250℃and300℃annealing temperature CdS/Ti electrode photoelectric catalytic performances, and the resultshows that the annealing temperature on the electro-optical properties of the electrode has littleeffect, but it will influence the success rate of excellent preparation electrode, high temperatureof electrode damage is larger.Then discussing the preparation of TiO₂nanotubes method and how to load CdSnanoparticles to nanotubes and the preparation of the CdS/TiO₂electrode, and studying theelectro-optical properties and making a comparison to CdS/Ti electrode. It is concluded that in the same sedimentary time CdS/TiO₂electrode photoelectric performance stability is better thanCdS/Ti electrode, produced a conclusion that the photocurrent slightly bigger. In most aspectsthe former are better than the CdS/Ti electrode. But CdS/TiO₂electrode also has its theinsufficient place. It is easy to reload process for various operation or experimental designmistakes and lead to end result not ideal. The main reason is the CdS easy jam nanotubes, itmeans reducing the surface area and loses it advantagement to the CdS/Ti electrode. And if theloading time too short reactant low concentration can cause CdS film too thin also loseadvantage. So controlling reload time and reactant concentration is very important.