采用高温回流法将石墨烯（ gh）掺杂于Al?MCM?41介孔分子筛中，通过浸渍法制备了石墨烯改性Al?MCM?41介孔分子筛负载铁芬顿催化剂（ gh?Al?MCM?41?Fe），利用比表面仪、扫描电子显微镜?X射线能谱（ SEM?EDX ）对催化剂进行了表征，考察了不同 pH 条件下该催化剂对苯酚的催化降解效能。结果表明， gh?Al?MCM?41?Fe催化剂具有介孔结构，表明颗粒分布均匀，石墨烯的掺杂减小了颗粒粒径，与多种催化剂（非介孔Al2O3?CuAl2O4、介孔Al2O3?Cu、介孔Al2O3?Fe、介孔Al?MCM?41?Fe）相比，gh?Al?MCM?41?Fe具有最高的苯酚催化降解效能，反应符合一级反应特征，石墨烯的掺杂能明显提高苯酚降解率和COD去除率，减少铁的溶出，拓宽pH范围，当pH值为3—5，反应90 min，COD去除率达到60％以上。
Graphene ( gh) modified mesoporous molecular sieves Al?MCM?41 were synthesized via a high temperature reflow method. Then gh?Al?MCM?41?Fe catalyst was prepared by a impregnation method. The catalyst was characterized by surface analyzer, scanning electron microscopy?energy dispersive X?ray spectrometry ( SEM?EDX) . Fenton catalytic degradation efficiency of phenol under different pH conditions was evaluated. The results showed that gh?Al?MCM?41?Fe possessed mesoporous structure and the particles distributed homogenously. The doped graphene reduced particle size. Compared with various catalysts ( non-mesoporous Al2 O3?CuAl2 O4 , mesoporous Al2 O3?Cu, mesoporous Al2 O3?Fe, mesoporous Al?MCM?41?Fe ) , gh?Al?MCM?41?Fe had the highest catalytic degradation capacity for phenol. The reaction process complied with the first?order kinetics model. The doping of graphene increased the degradation rate of phenol and the removal rate of COD, reduced the iron dissolution and expanded the pH range of the degradation reaction. When pH value was 3—5, the removal rate of COD reached more than 60% after 90 min reaction.
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