CAJ | 학술논문

以不同改性膨润土和铁盐为原料，采用共沉淀法将纳米Fe3 O4原位负载于膨润土上，制备出了磁性膨润土复合材料。采用X射线衍射（XRD ）、傅里叶变换红外光谱（FTIR ）、扫描电子显微镜（SEM ）和比表面孔隙分析（BET ）对样品进行表征，研究了不同磁性膨润土对H2 O2氧化降解橙黄Ⅱ的催化活性。结果表明， Fe3 O4均匀负载在膨润土表面，减少了膨润土的团聚，改善了孔隙结构，增加了其比表面积。磁性膨润土的催化性能较纯Fe3 O4有了明显提高，使用Fe-Al柱撑改性的膨润土负载纳米Fe3 O4，其催化活性最高。
이불동개성팽윤토화철염위원료，채용공침정법장납미Fe3 O4원위부재우팽윤토상，제비출료자성팽윤토복합재료。채용X사선연사（XRD ）、부리협변환홍외광보（FTIR ）、소묘전자현미경（SEM ）화비표면공극분석（BET ）대양품진행표정，연구료불동자성팽윤토대H2 O2양화강해등황Ⅱ적최화활성。결과표명， Fe3 O4균균부재재팽윤토표면，감소료팽윤토적단취，개선료공극결구，증가료기비표면적。자성팽윤토적최화성능교순Fe3 O4유료명현제고，사용Fe-Al주탱개성적팽윤토부재납미Fe3 O4，기최화활성최고。
Magnetic bentonite is successfully prepared by situ co -precipitation method using iron salt and different modi-fied bentonite as primary raw materials . The samples obtained are characterized by XRD , FTIR , SEM and BET . The catalytic activity of different magnetic bentonite samples for the oxidation degradation of orange II in the presence of H 2 O2 is investigated .The results show that the Fe3 O4 nanoparticles exist on the surface of bentonite ,with better dispersing ,less co-aggregation and greater BET surface area than the ones without bentonite support .The catalytic activity of magnetic bentonite is much higher than that of pure Fe3 O4 nanoparticles .The sample of Fe3 O4 nanoparticles supported with Fe -Al pillared bentonite presents the highest catalytic activity .