催化学报
催化學報
최화학보
CHINESE JOURNAL OF CATALYSIS
2001年
2期
177-180
,共4页
杨阳%陈爱平%古宏晨%戴智铭%古政荣%陶咏
楊暘%陳愛平%古宏晨%戴智銘%古政榮%陶詠
양양%진애평%고굉신%대지명%고정영%도영
二氧化钛%膨胀珍珠岩%癸烷%浮油%光催化降解
二氧化鈦%膨脹珍珠巖%癸烷%浮油%光催化降解
이양화태%팽창진주암%계완%부유%광최화강해
以膨胀珍珠岩为载体制备了漂浮负载型TiO2光催化剂,并对制备催化剂的工艺条件及水面浮油的光催化降解过程进行了初步研究.通过扫描电镜分析及BET比表面积和TiO2负载量测定,对影响负载型光催化剂漂浮性能的因素进行了分析.以癸烷为水面模拟污染物,考察了其在日光照射下的降解效率.用气相色谱法测定了经不同时间光照后癸烷的残留量,经7h光照后能降解癸烷95%以上.实验结果表明,以膨胀珍珠岩为载体,可制得能长期漂浮于水面的负载型TiO2光催化剂,通过浮油富集和光催化降解机制可对水面浮油进行有效的治理.
以膨脹珍珠巖為載體製備瞭漂浮負載型TiO2光催化劑,併對製備催化劑的工藝條件及水麵浮油的光催化降解過程進行瞭初步研究.通過掃描電鏡分析及BET比錶麵積和TiO2負載量測定,對影響負載型光催化劑漂浮性能的因素進行瞭分析.以癸烷為水麵模擬汙染物,攷察瞭其在日光照射下的降解效率.用氣相色譜法測定瞭經不同時間光照後癸烷的殘留量,經7h光照後能降解癸烷95%以上.實驗結果錶明,以膨脹珍珠巖為載體,可製得能長期漂浮于水麵的負載型TiO2光催化劑,通過浮油富集和光催化降解機製可對水麵浮油進行有效的治理.
이팽창진주암위재체제비료표부부재형TiO2광최화제,병대제비최화제적공예조건급수면부유적광최화강해과정진행료초보연구.통과소묘전경분석급BET비표면적화TiO2부재량측정,대영향부재형광최화제표부성능적인소진행료분석.이계완위수면모의오염물,고찰료기재일광조사하적강해효솔.용기상색보법측정료경불동시간광조후계완적잔류량,경7h광조후능강해계완95%이상.실험결과표명,이팽창진주암위재체,가제득능장기표부우수면적부재형TiO2광최화제,통과부유부집화광최화강해궤제가대수면부유진행유효적치리.
The preparation condition for the photocatalyst with TiO2immobilized on expanded perlite TiO2/EP and the photocatalytic degradation process of oil film floating on water were discussed. The floating property of the photocatalyst was also investigated. The photocatal yst TiO2/EP was characterized by SEM, BET and the determination of TiO2 amount. The degradation efficiency o f d ecane, a model substance of oilon water, was studied with irradiation by sunlight. The decane remaining in the solution phase and on the photocatal yst was analyzed by GC. It was observed that about 95% of decane was degraded wi thin 7 h. The results showed that the TiO2/EP photocatalyst can float on w ater for a long time. The mechanism of concentration and then photocatalytic deg radation of the floating oil on the photocatalyst was proposed.