N Uekawa   R Yamashita   YJ Wu   K Kakegawa   
PHYSICAL CHEMISTRY CHEMICAL PHYSICS 6(2) 442-446 2004年1月
Aqueous solutions containing Zn(OH)(4)(2-) ions were prepared by adding 50 ml of 1.5 mol l(-1) aqueous alkali metal hydroxide (MOH: M = Li, Na, K, Cs) to 50 ml of 0.1 mol l(-1) aqueous zinc nitrate hydrate (Zn(NO3)(2).6H(2)O). Zinc oxide (ZnO) cry...
N Uekawa   R Yamashita   YJ Wu   K Kakegawa   
PHYSICAL CHEMISTRY CHEMICAL PHYSICS 6(2) 442-446 2004年1月
Aqueous solutions containing Zn(OH)(4)(2-) ions were prepared by adding 50 ml of 1.5 mol l(-1) aqueous alkali metal hydroxide (MOH: M = Li, Na, K, Cs) to 50 ml of 0.1 mol l(-1) aqueous zinc nitrate hydrate (Zn(NO3)(2).6H(2)O). Zinc oxide (ZnO) cry...
Monodispersed zinc oxide (ZnO) nanoparticle whose average diameter was ca. 20 nm was prepared by heating zinc peroxide (ZnO2) particles at 473 K for 1 h. After ZnO compact was prepared by pressing ZnO nanoparticles, the ZnO compact was sintered at...
N Uekawa   T Kudo   F Mori   YJ Wu   K Kakegawa   
JOURNAL OF COLLOID AND INTERFACE SCIENCE 264(2) 378-384 2003年8月
A peroxo niobic acid sol was prepared by peptization of the niobic acid precipitate (Nb2O5.nH(2)O) with a H2O2 aqueous solution. Crystallized Nb2O5 nanoparticles and niobic acid nanoparticles were obtained by heating the peroxo niobic acid sol. Wh...
N Uekawa   T Kudo   F Mori   YJ Wu   K Kakegawa   
JOURNAL OF COLLOID AND INTERFACE SCIENCE 264(2) 378-384 2003年8月
A peroxo niobic acid sol was prepared by peptization of the niobic acid precipitate (Nb2O5.nH(2)O) with a H2O2 aqueous solution. Crystallized Nb2O5 nanoparticles and niobic acid nanoparticles were obtained by heating the peroxo niobic acid sol. Wh...