功能材料与器件学报
功能材料與器件學報
공능재료여기건학보
JOURNAL OF FUNCTIONAL MATERIALS AND DEVICES
2010年
1期
29-34
,共6页
方培育%吴建青%张京涛%吕明
方培育%吳建青%張京濤%呂明
방배육%오건청%장경도%려명
复合材料%二氧化钛%水热法%光催化性能%硅藻土
複閤材料%二氧化鈦%水熱法%光催化性能%硅藻土
복합재료%이양화태%수열법%광최화성능%규조토
composite materials%titania%hydrothermal method%photocatalysis%diatomite
以水热法、用钛酸丁酯和二乙醇胺为原料、在160℃保温4小时合成了TiO_2纳米颗粒.在pH值约为2时通过静电吸引把TiO_2涂覆在硅藻土表面形成TiO_2-硅藻土复合材料,并用透射电镜(TEM)、扫描电镜(SEM)、X-射线衍射(XRD)和差热示差扫描量热仪(DSC)研究了其性能.TiO_2是近正方形的、分散良好的锐钛矿晶体,其颗粒大小约为15nm.TiO_2均匀的、牢固的附着在硅藻土的表面上,其TiO_2/硅藻土质量比为1:10.TiO_2-硅藻土复合材料具有良好的光催化性能,在紫外光照射下100g复合材料用3h可使10ml浓度为20mg/L的甲基橙水溶液完全降解.
以水熱法、用鈦痠丁酯和二乙醇胺為原料、在160℃保溫4小時閤成瞭TiO_2納米顆粒.在pH值約為2時通過靜電吸引把TiO_2塗覆在硅藻土錶麵形成TiO_2-硅藻土複閤材料,併用透射電鏡(TEM)、掃描電鏡(SEM)、X-射線衍射(XRD)和差熱示差掃描量熱儀(DSC)研究瞭其性能.TiO_2是近正方形的、分散良好的銳鈦礦晶體,其顆粒大小約為15nm.TiO_2均勻的、牢固的附著在硅藻土的錶麵上,其TiO_2/硅藻土質量比為1:10.TiO_2-硅藻土複閤材料具有良好的光催化性能,在紫外光照射下100g複閤材料用3h可使10ml濃度為20mg/L的甲基橙水溶液完全降解.
이수열법、용태산정지화이을순알위원료、재160℃보온4소시합성료TiO_2납미과립.재pH치약위2시통과정전흡인파TiO_2도복재규조토표면형성TiO_2-규조토복합재료,병용투사전경(TEM)、소묘전경(SEM)、X-사선연사(XRD)화차열시차소묘량열의(DSC)연구료기성능.TiO_2시근정방형적、분산량호적예태광정체,기과립대소약위15nm.TiO_2균균적、뢰고적부착재규조토적표면상,기TiO_2/규조토질량비위1:10.TiO_2-규조토복합재료구유량호적광최화성능,재자외광조사하100g복합재료용3h가사10ml농도위20mg/L적갑기등수용액완전강해.
TiO_2 nanoparticles were hydrothermally synthesized at 160℃ for 4h using tetrabutyl titanate and diethanolamine. TiO_2-diatomite composites were prepared by coating TiO_2 sol on diatomite at pH value of ca. 2. TiO_2 and its composites were investigated by transmission electron microscope(TEM), scanning electron microscope (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC).TiO_2 was anatase-type, near square and dispersive in the size of about 15nm. TiO_2 was mounted uniformly with TiO_2/diatomite mass ratio of 1 : 10 on the diatomite with strong bonds. TiO_2-diatomite composites owned good photocatalytic performance to decolorize methyl orange. 10ml of 20mg/L aqueous methyl orange was decolorized by 100rag TiO_2-diatomite composites in 3h under UV light irradiation.
