中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2010年
2期
308-312
,共5页
阵列膜%模板剂%水热法%复合掺杂%光催化活性
陣列膜%模闆劑%水熱法%複閤摻雜%光催化活性
진렬막%모판제%수열법%복합참잡%광최화활성
oriented film%templating agent%hydrothermal method%codoping%photocatalytic activity
以多孔陶粒为载体,采用低温水热-模板剂法制备复合掺杂的La(S,C)-TiO_2阵列膜,研究水热反应温度、非离子型高分子模板剂用量和La、S复合掺杂的协同效应对纳米TiO_2膜性能的影响,并通过XRD、BET、EDS和SEM等手段进行表征.结果表明:水热反应温度为150 ℃,反应时间控制在10 h时可得到锐钛矿相的TiO_2膜;模板剂P123用量为0.03(与Ti的摩尔比)时,可以将TiO_2颗粒的比表面积从146 m~2/g提高到240 m~2/g,并形成有序排列的阵列膜;适量地复合掺杂La和S(C),可使TiO_2膜的光催化活性大大提高,在3 h内将甲基橙完全降解.
以多孔陶粒為載體,採用低溫水熱-模闆劑法製備複閤摻雜的La(S,C)-TiO_2陣列膜,研究水熱反應溫度、非離子型高分子模闆劑用量和La、S複閤摻雜的協同效應對納米TiO_2膜性能的影響,併通過XRD、BET、EDS和SEM等手段進行錶徵.結果錶明:水熱反應溫度為150 ℃,反應時間控製在10 h時可得到銳鈦礦相的TiO_2膜;模闆劑P123用量為0.03(與Ti的摩爾比)時,可以將TiO_2顆粒的比錶麵積從146 m~2/g提高到240 m~2/g,併形成有序排列的陣列膜;適量地複閤摻雜La和S(C),可使TiO_2膜的光催化活性大大提高,在3 h內將甲基橙完全降解.
이다공도립위재체,채용저온수열-모판제법제비복합참잡적La(S,C)-TiO_2진렬막,연구수열반응온도、비리자형고분자모판제용량화La、S복합참잡적협동효응대납미TiO_2막성능적영향,병통과XRD、BET、EDS화SEM등수단진행표정.결과표명:수열반응온도위150 ℃,반응시간공제재10 h시가득도예태광상적TiO_2막;모판제P123용량위0.03(여Ti적마이비)시,가이장TiO_2과립적비표면적종146 m~2/g제고도240 m~2/g,병형성유서배렬적진렬막;괄량지복합참잡La화S(C),가사TiO_2막적광최화활성대대제고,재3 h내장갑기등완전강해.
The La(S,C)-TiO_2 oriented films were prepared on porous hadites by hydrothermal-templating method at low temperatures. The effects of the hydrothermal reaction temperature, addition of template agents, synergism effect of La/S codoping on the performances of nano-TiO_2 films were studied. The performances of the films were characterized by XRD, UV-Vis BET, EDS and SEM. The results show that the TiO_2 film with anatase phase is obtained when the hydrothermal reaction temperature is 150 ℃ and the reacting time is 10 h. The oriented film is obtained when the molar ratio of template P123 to Ti is 0.03, and the specific surface area of particles in the film increases from 146 m~2/g to 240 m~2/g. The appropriate amount of La and S codoping greatly improves the photocatalytic activity of TiO_2 film, which fully decomposes methyl orange in water within 3 h.
