石墨烯/SnO_(2)改性碳纤维阳极降解水中普萘诺尔

Graphene/Tin Dioxide Modified Carbon Fiber Anode for Propranolol Degradation in Water

采用水热法在碱性条件下制备了石墨烯(G)/SnO_(2)纳米复合材料,并应用静电纺丝技术以及通过预氧化、碳化等程序制备了基于聚丙烯腈(PAN)掺杂G/SnO_(2)的改性碳纤维膜(MCFs),并对其进行了SEM、TEM、XRD等表征;将MCFs负载于支撑材料上制成改性碳纤维阳极,同时搭建了电催化反应模块,探究不同条件对所制备阳极催化降解普萘诺尔(PRO)的影响。结果表明,阳极电势和改性碳纤维膜的质量是影响降解率的主要因素;当阳极负载膜的质量相同时,在负载MCFs的情况下催化体系对PRO的降解率远高于负载未掺杂G/SnO_(2)的碳纤维膜(CFs)的情况;阳极负载MCFs的质量约为80 mg时,体系的PRO的降解率达到了82.6%。

The graphene/tin dioxide(G/SnO_(2)) nanocomposites were prepared by hydrothermal method under alkaline conditions.The polyacrylonitrile(PAN)-based G/SnO_(2) modified carbon fibers membrane(MCFs) was prepared first by electrospinning process and then through pre-oxidation and carbonization progress,after that,The MCFs were characterized.The MCFs was made into an electrocatalytic anode by being loaded on the support material,and in the meanwhile a reaction module was set up to investigate the effects of different conditions on the degradation of propranolol(PRO)using the prepared anode.The results showed that the anode potential and the quality of MCFs were the main factors affecting the degradation rate.When the anode loading the same mass of the membrane,the degradation rate of PRO by the catalytic system when loaded with MCFs was much higher than when loaded with carbon fiber membranes(CFs) without G/SnO_(2).After the loading mass around 80 mg of MCFs,the removal rate of PRO of the system reached 82.6%.