纳米二氧化钛分散性能与光催化活性研究.pdfVIP

40 1 Vol. 40 No. 1 2010 1 PAINT COATINGS INDUSTRY Jan. 2010 李红娟, 何唯平 (深圳海川工程科技有限公司, 广东深圳 518040) : , pH , pH = 8 1% H 5040 1% ( SH), , , 5; , 15 m in 96% , 10% : ; ; ; : TQ 6307 : A : 0253- 4312( 2010) 01- 0024- 05 Study on D ispersibility and Photocalatytic Activity of Nano- TiO2 LiHongj an, H eW eip ing (Ocean Pow er Eng ineering Technology Co. , L td. , Shenzhen, Guangdong 518040, Ch ina) Abstract: The d ispersibility of nano- T iO in waterw as st died by se of vario s d ispersants. The infl 2 ence of sorts and amo nt of dispersants, pH val e and d ispersingm ethods on dispersing effectw as d isc ssed of w as fo nd thatw hen pH= 8, H 5040 1% and sodi m hexametaphosphate 1% as d ispersant and dispersed ltrason ically afterh igh speed d ispersing a good dispersing effect can be obyained. The selfmadeT iO sl rry 2 show ed a better photocatalytic activity than domestic and mi ported samples. This sl rry still co ld provide good photocatalytic effect after decomposing sol tion ofmethylene bl e five tmi es, asw ell as a good perform ance in decomposing NO , decomposing effectiveness p to 96% after 15 m in tes. The effect of the add itive 2 on photocatalytic activity of nano T iO w as also disc ssed, the res lt show ed 10% potassi m peroxydis lfate 2 co ld enhance the photocalatytic activity obvio sly. KeyW ords: nano T iO ; dispersing stab ility; photocalatytic activity; additive 2