• 文献标题:   Reduced graphene oxide composites and its real-life application potential for in-situ crude oil removal
  • 文献类型:   Article
  • 作  者:   WANG XX, PENG GT, CHEN MM, ZHAO M, HE Y, JIANG Y, ZHANG XZ, QIN Y, LIN SJ
  • 作者关键词:   graphene, in situ, crude oil, composite, 3d printing, photothermal
  • 出版物名称:   CHEMOSPHERE
  • ISSN:   0045-6535 EI 1879-1298
  • 通讯作者地址:   Tongji Univ
  • 被引频次:   0
  • DOI:   10.1016/j.chemosphere.2020.126141
  • 出版年:   2020

▎ 摘  要

Crude oil pollution can cause severe and long-term ecological damage and oil cleanup has become a worldwide challenge. Conventional treatment strategies like in-situ burning, manual skimmer and bioremediation were labor-intensive and time-consuming. The high viscosity of crude oil also posed difficulty for traditional absorbents. Herein, to address these limitations, we designed and fabricated a floating absorbent that was comprised of reduced graphene oxide (RGO), melamine sponge (MS), and a 3D-printed mounting platform. Through a facile one-pot hydrothermal method, graphene oxide (GO) was simultaneously reduced to RGO and loaded in MS (RGO-MS). The resulted RGO-MS composites possess desirable hydrophobicity/oleophilicity for oil absorption with a water contact angle of 122 degrees. The effective light-to-heat conversion allowed the RGO-MS composite to absorb approximately 95 times its own weight of crude oil within 12 min under light irradiation. A 3D-printed mounting platform for RGOMS composites was further fabricated to improve its applicability and allow easy retrieval. Taking advantages of the RGO's hydrophobicity/oleophilicity and photothermal property, the floating ability of MS, this study demonstrated the real-life applicability of RGO-MS composites for in-situ crude oil cleanup. (C) 2020 Elsevier Ltd. All rights reserved.