材料导报
材料導報
재료도보
MATERIALS REVIEW
2009年
z1期
96-99
,共4页
纳米TiO2%Fe3+-SiO2掺杂%光催化降解
納米TiO2%Fe3+-SiO2摻雜%光催化降解
납미TiO2%Fe3+-SiO2참잡%광최화강해
nano-TiO2%Fe3+-SiO2 doped%photocatalytic degradation
以三嵌段非离子表面活性剂P123为模板,采用水热法制备了Fe3+-SiPO2掺杂纳米TiO2,通过X射线衍射(XRD)、红外光谱(FT-IR)、紫外-可见吸收光谱(UV-Vis)等手段考察了Fe3+-SiO2掺杂纳米TiO2的结构与光学特性.实验结果表明:Fe3+、SiO2掺杂进入TiO2的晶格,可获得高纯度锐钛矿相纳米TiO2.Fe3+和SiO2的加入有助于抑制金红石相的形成和晶粒长大,提高了TiO2的热稳定性.Fe3+-SiO2掺杂将TiO2的光响应范围拓宽至可见光区,提高了纳米TiO2的光催化性能.与纯纳米TiO2相比,Fe3+-SiO2掺杂纳米TiO2光催化降解甲基橙的性能显著提高.
以三嵌段非離子錶麵活性劑P123為模闆,採用水熱法製備瞭Fe3+-SiPO2摻雜納米TiO2,通過X射線衍射(XRD)、紅外光譜(FT-IR)、紫外-可見吸收光譜(UV-Vis)等手段攷察瞭Fe3+-SiO2摻雜納米TiO2的結構與光學特性.實驗結果錶明:Fe3+、SiO2摻雜進入TiO2的晶格,可穫得高純度銳鈦礦相納米TiO2.Fe3+和SiO2的加入有助于抑製金紅石相的形成和晶粒長大,提高瞭TiO2的熱穩定性.Fe3+-SiO2摻雜將TiO2的光響應範圍拓寬至可見光區,提高瞭納米TiO2的光催化性能.與純納米TiO2相比,Fe3+-SiO2摻雜納米TiO2光催化降解甲基橙的性能顯著提高.
이삼감단비리자표면활성제P123위모판,채용수열법제비료Fe3+-SiPO2참잡납미TiO2,통과X사선연사(XRD)、홍외광보(FT-IR)、자외-가견흡수광보(UV-Vis)등수단고찰료Fe3+-SiO2참잡납미TiO2적결구여광학특성.실험결과표명:Fe3+、SiO2참잡진입TiO2적정격,가획득고순도예태광상납미TiO2.Fe3+화SiO2적가입유조우억제금홍석상적형성화정립장대,제고료TiO2적열은정성.Fe3+-SiO2참잡장TiO2적광향응범위탁관지가견광구,제고료납미TiO2적광최화성능.여순납미TiO2상비,Fe3+-SiO2참잡납미TiO2광최화강해갑기등적성능현저제고.
Fe3+-SiO2 doped nano-TiO2 is prepared by hydrothermal process with tri-block non-ion surfactant P123 as template.Structures and optical properties of the synthesized samples are characterized via XRD,UV-Vis absorption spec-trum,FT-IR,etc.The results show that both Fe3+ and silica get into the crystal lattice of titanium dioxide,and obtain high purity of anatase phased nano-TiO2.The addition of silica and Fe3+ in TiO2 particles can effectively suppress the formation of the rutile phase and the growth of titanium dioxide crystals,and improve thermal stability of TiO2.The spectra response range of TiO2 extends to visible light substantially by Fe3+-SiO2 doping,then photocatalytic performance is improved effectively.Compared with pure nano-TiO2,the performance of Fe3+-SiO2 doped nano-TiO2 which photocatalytically degradates methyl orange is increased significantly.
