Heterogeneous Fenton ferroferric oxide-reduced graphene oxide-based composite microjets for efficient organic dye degradation.,Journal of Colloid and Interface Science

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Heterogeneous Fenton ferroferric oxide-reduced graphene oxide-based composite microjets for efficient organic dye degradation.
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2020-03-20 , DOI: 10.1016/j.jcis.2020.03.073
Hongqi Shi ₁ , Xiao Chen ₂ , Kun Liu ₃ , Xiaoyong Ding ₂ , Wenjuan Liu ₁ , Mingli Xu ₃

Affiliation

A global water pollution on account of organic dye waste poses serious heath threat to human beings. Graphene-based micromotors have recently attracted considerable attentions for efficient water remediation. However, a secondary catalytic degradation is required for completely destroying persistent organic dyes after their adsorption by graphene and its derivatives. Here, we immobilized ferroferric oxide (Fe3O4) nanoparticles (NPs) with reduced graphene oxide (rGO)-based micromotors in order to synthesize heterogeneous Fenton Fe3O4-rGO/Pt composite microjets and to improve their catalytic performance. The as-prepared composite microjets are well propelled in contaminated waters by Pt catalyzing hydrogen peroxide. Combining the attractive properties of reduced graphene oxide (rGO) and Fe3O4 NPs along with fascinating motor movement, the composite microjets offer an efficient removal of methylene blue in short time. This outstanding catalytic performance is ascribed to the synergistic effect of Fe3O4 and rGO during the heterogeneous Fenton-like reaction and the enhanced localized mixing effect during the motion. Moreover, the Fenton composite microjets are able to magnetically recovered and reused for further decontamination processes. Our proposed Fenton composite microjets with extraordinary catalytic capability and good recyclability holds considerable promise for diverse environmental applications.

中文翻译：

异质的Fenton氧化铁还原氧化石墨烯基复合微喷射器可有效降解有机染料。

由于有机染料浪费造成的全球水污染对人类构成严重的健康威胁。近年来，基于石墨烯的微电机在有效的水修复方面引起了相当大的关注。但是，在石墨烯及其衍生物吸附持久性有机染料后，需要进行二次催化降解才能完全破坏持久性有机染料。在这里，我们用还原的氧化石墨烯（rGO）基微电机固定了三氧化二铁（Fe3O4）纳米颗粒（NPs），以合成非均相的Fenton Fe3O4-rGO / Pt复合微射流并改善其催化性能。通过Pt催化过氧化氢，可以在污染的水中很好地推进所制备的复合微射流。结合了氧化石墨烯（rGO）和Fe3O4 NP的吸引人的特性以及引人入胜的电机运动，复合微型喷嘴可在短时间内有效去除亚甲蓝。这种杰出的催化性能归因于Fe3O4和rGO在异质Fenton样反应期间的协同作用，以及运动过程中增强的局部混合作用。此外，芬顿复合材料微型喷嘴能够进行磁性回收，并可以再用于进一步的净化过程。我们提出的具有卓越催化能力和良好可回收性的Fenton复合微型喷气机在各种环境应用中都具有可观的前景。Fenton复合材料微型喷嘴能够进行磁回收并重新用于进一步的净化过程。我们提出的具有卓越催化能力和良好可回收性的Fenton复合微型喷气机在各种环境应用中都具有可观的前景。Fenton复合材料微型喷嘴能够进行磁回收并重新用于进一步的净化过程。我们提出的具有卓越催化能力和良好可回收性的Fenton复合微型喷气机在各种环境应用中都具有可观的前景。

更新日期：2020-03-20

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