东华大学学报（自然科学版）
東華大學學報（自然科學版）
동화대학학보（자연과학판）
JOURNAL OF DONGHUA UNIVERSITY(NATURAL SCIENCE)
2010年
2期
148-152
,共5页
金红石%水热法%添加剂%酸浓度
金紅石%水熱法%添加劑%痠濃度
금홍석%수열법%첨가제%산농도
rutile%hydrothermal method%additive%acid concentration
以异丙醇钛为原料,采用水热法在浓酸条件下低温合成高径向比金红石型TiO2纳米颗粒.研究了酸浓度、聚乙二醇 4000(PEG 4000)、十六烷基溴化铵(CTAB)和十二烷基硫酸钠(SDS)对产物形貌和大小的影响.首次采用Zeta电位仪测试了金红石型和锐钛矿型纳米TiO2颗粒对H+的吸附能力,从而揭示了金红石型纳米TiO2颗粒呈针状的原因.经透射电镜(TEM)和X-射线衍射(XRD)分析,得到的样品为金红石型,其颗粒为棒状,通过控制条件可以制得不同粒径分散均匀的纳米TiO2颗粒.
以異丙醇鈦為原料,採用水熱法在濃痠條件下低溫閤成高徑嚮比金紅石型TiO2納米顆粒.研究瞭痠濃度、聚乙二醇 4000(PEG 4000)、十六烷基溴化銨(CTAB)和十二烷基硫痠鈉(SDS)對產物形貌和大小的影響.首次採用Zeta電位儀測試瞭金紅石型和銳鈦礦型納米TiO2顆粒對H+的吸附能力,從而揭示瞭金紅石型納米TiO2顆粒呈針狀的原因.經透射電鏡(TEM)和X-射線衍射(XRD)分析,得到的樣品為金紅石型,其顆粒為棒狀,通過控製條件可以製得不同粒徑分散均勻的納米TiO2顆粒.
이이병순태위원료,채용수열법재농산조건하저온합성고경향비금홍석형TiO2납미과립.연구료산농도、취을이순 4000(PEG 4000)、십륙완기추화안(CTAB)화십이완기류산납(SDS)대산물형모화대소적영향.수차채용Zeta전위의측시료금홍석형화예태광형납미TiO2과립대H+적흡부능력,종이게시료금홍석형납미TiO2과립정침상적원인.경투사전경(TEM)화X-사선연사(XRD)분석,득도적양품위금홍석형,기과립위봉상,통과공제조건가이제득불동립경분산균균적납미TiO2과립.
Highly dispersed rutile TiO2 nanoparticle with a high aspect ratio were successfully synthesized using titanium (Ⅳ) isopropoxide in perchloric acid solution via hydrothermal method at low temperature.Effects of acid concentration and additives(polyethylene glycol 4000(PEG 4000),cetyl trimetylammonium bromide(CTAB),and sodium laury sulfate(SDS))on the size and morphology of TiO2 crystalline were investigated.These TiO2 nanoparticles were characterized by TEM and XRD.The Zeta potential of anatase and rutile TiO2 nanoparticles were measured and the results showed a stronger adsorption of H+ on rutile nanoparticles than that on anatase nanoparticles,suggesting a possible formation mechanism of rodlike rutile TiO2 nanoparticles.The uniform rod-like rutile TiO2 nanoparticles were abtained with different sizes by controlling reaction conditions.
