GO/MnO_(2)管状微马达的制备及其废水处理应用

Preparation of GO/MnO_(2) Tubular Micromotor and Its Application in Wastewater Treatment

为了解决日益严重的水污染问题,研制了一种二氧化锰(MnO_(2))与氧化石墨烯(GO)相结合的GO/MnO_(2)管状微马达。介绍了该微马达的制备方法,并进行了形貌表征分析和催化性能研究。结果表明,GO/MnO_(2)管状微马达在低体积分数燃料下仍能进行运动,在3%体积分数过氧化氢(H_(2)O_(2))中运动速度可达97μm/s,加入活化剂(X-100)后速度提高到110μm/s,提升了13.4%左右。另外,GO/MnO_(2)微马达对有机废物(以亚甲基蓝(MB)为代表)的催化降解性能也得到提升,通过测试一定时间内MB溶液的透射率,计算出1 h内GO/MnO_(2)微马达对MB的降解率高达86%,超过了GO/Pt微马达的降解率约3%。该研究将对未来环境中废水的处理提供一定的参考。

To solve the increasingly serious water pollution problem,a GO/MnO_(2)tubular micromotor combined with manganese dioxide(MnO_(2))and graphene oxide(GO)was developed.The preparation method of the micromotor was introduced,and the morphology characterization and catalytic performance were studied.The results show that the GO/MnO_(2)tubular micromotor can still move under low volume fraction of fuel,and the movement speed can reach 97μm/s in hydrogen peroxide(H_(2)O_(2))with a volume fraction of 3%.After the addition of activator(X-100),the speed is increased to 110μm/s,i.e.by about 13.4%.In addition,the catalytic degradation performance of organic waste(represented by methylene blue(MB))by GO/MnO_(2)micromotor is improved.By testing the transmittance of MB solution within a certain period of time,it is calculated that the degradation rate of MB by GO/MnO_(2)micromotor is as high as 86% within 1 h,which is about 3% higher than that by GO/Pt micromotor.The study will provide some refe-rences for the wastewater treatment in the future environment.