A variety of affecting factors on ultrasonic degradation of methylene blue in the presence of TiO2 were studied.The results indicated that the effects of ultrasonic degradation were more apparent in the presence of na...A variety of affecting factors on ultrasonic degradation of methylene blue in the presence of TiO2 were studied.The results indicated that the effects of ultrasonic degradation were more apparent in the presence of nanometer rutile TiO2 than of the solely ultrasonic ones.The sonochemical degradation kinetic of methylene blue in water was first-order.The degradation rate of methylene blue reached up to 80% in 120 min at ultrasonic frequency of 40kHz,power input of 50W,amount of catalyst of 1.0g/L,pH 5.16 and initial dye concentration of 5.0mg/L.Therefore,this method has better prospects in application.展开更多
Effects of process on the deposition rate,corrosion resistance and corrosion potential of Ni-P-nano-TiO2(rutile) electroless composite plating,were studied by using weightless corrosion methods,magnetic thickness gaug...Effects of process on the deposition rate,corrosion resistance and corrosion potential of Ni-P-nano-TiO2(rutile) electroless composite plating,were studied by using weightless corrosion methods,magnetic thickness gauge and electrochemical methods.The results indicated that the optimum formula and process,composed of NiSO4(10g/400mL),NaH2PO2(10g/400mL),NaAc(6g/400mL),H3BO3(6g/400mL),1h,pH=5.5,80℃,100r/min and nano-TiO2 particle(rutile)(4g/400mL),were obtained.Then,it was shown that corrosion resistance of electroless composite coatings Ni-P-nano-TiO2 (rutile) increased 3-4 times,compared with that of electroless coatings Ni-Pin alkaline and salt corrosion media.However,in acid media,corrosion resistance of Ni-P coating was better.展开更多
文摘A variety of affecting factors on ultrasonic degradation of methylene blue in the presence of TiO2 were studied.The results indicated that the effects of ultrasonic degradation were more apparent in the presence of nanometer rutile TiO2 than of the solely ultrasonic ones.The sonochemical degradation kinetic of methylene blue in water was first-order.The degradation rate of methylene blue reached up to 80% in 120 min at ultrasonic frequency of 40kHz,power input of 50W,amount of catalyst of 1.0g/L,pH 5.16 and initial dye concentration of 5.0mg/L.Therefore,this method has better prospects in application.
文摘Effects of process on the deposition rate,corrosion resistance and corrosion potential of Ni-P-nano-TiO2(rutile) electroless composite plating,were studied by using weightless corrosion methods,magnetic thickness gauge and electrochemical methods.The results indicated that the optimum formula and process,composed of NiSO4(10g/400mL),NaH2PO2(10g/400mL),NaAc(6g/400mL),H3BO3(6g/400mL),1h,pH=5.5,80℃,100r/min and nano-TiO2 particle(rutile)(4g/400mL),were obtained.Then,it was shown that corrosion resistance of electroless composite coatings Ni-P-nano-TiO2 (rutile) increased 3-4 times,compared with that of electroless coatings Ni-Pin alkaline and salt corrosion media.However,in acid media,corrosion resistance of Ni-P coating was better.
