TiO2 film is prepared on the surface of Q235A substrate from an acid solution ([Formula: see text]) to research its degradation of methylene blue organic pollutant in wastewater. The titanium oxysulfate is used as the titanium precursor to provide the source of titanium. The preparation of TiO2 film is mainly a polymerization reaction of titanium oxysulfate, which makes Ti2O[Formula: see text] and OH− combine to produce [Ti2O5(OH)2]n precipitation deposited on the cathode surface by electrochemical reaction. TiO2 film is formed after high temperature heating. The nitrate ion which derives from potassium nitrate in the electrolyte is reduced to hydroxide ion during the electrochemical reaction process, resulting in the formation of titanium compounds and titanium hydroxide. The TiO2 film prepared from solution containing 0.2[Formula: see text]mol/L KNO3 has the best photocatalytic performance which can effectively degrade the methylene blue organic pollutant in wastewater. However, when the KNO3 in the solution is 0.25[Formula: see text]mol/L, excessive hydroxide ions inhibit the hydrolysis of titanium salts and accelerate the oxygen evolution resulting in the decrease of degradation efficiency.
The core of "ASIC Design based on PLD" course teaching is consist of the theoretical teaching and practical teaching. Based on the features and problems occurred in the teaching practice of ASIC Design , together with the need from constructions of courses within electronics major in the school, the article makes the necessity and feasibility analysis of the course revolution, proposed teaching curriculum studies such measures and proposals.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.