Bi Bingqian, Guan Yihao, Qiao Di, Chen Xiuping, Bao Mutai, Wang Zhining, Li Yiming
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, PR China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao 266100, PR China.
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China.
J Hazard Mater. 2023 Oct 15;460:132353. doi: 10.1016/j.jhazmat.2023.132353. Epub 2023 Aug 26.
The frequent occurrence of oil spills has led to serious environmental pollution and ecological issues. Given the high-viscosity of crude oil, it is essential to develop sorbents with efficient viscosity reduction and sorption capacity in various environmental conditions. Herein, a superhydrophobic carboxymethyl cellulose (CMC) aerogel co-modified by MXene and graphene jointly (M-Mxene/Gr CA) with aligned channels structure was prepared. The aligned channels structure can effectively improve the longitudinal thermal conductivity and reduce the sorption resistance. Through the modification of MXene and graphene, the aerogel realized efficient photo/electro-thermal conversion, thus ensuring its adaption to various working environments. The rapid heat generation can significantly reduce the viscosity of crude oil, achieving rapid recovery. Under one sun illumination (1.0 kW/m), the surface temperature of M-Mxene/Gr CA can reach 72.6 °C and its sorption capability for high-viscous crude oil reaches 18 g/g. Combining photo-thermal and electro-thermal (0.5 kW/m and 23 V), the average sorption rate of crude oil can reach 1.3 × 10 g m s. Finally, we present a continuous sorption system to recover offshore oil spills under the assistance of a pump. This work provides a new option for tackling high-viscous offshore oil spills due to its environmental friendliness and fast sorption capacity.
原油泄漏的频繁发生导致了严重的环境污染和生态问题。鉴于原油的高粘度，开发在各种环境条件下具有高效降粘和吸附能力的吸附剂至关重要。在此，制备了一种具有排列通道结构的、由MXene和石墨烯共同共改性的超疏水羧甲基纤维素（CMC）气凝胶（M-Mxene/Gr CA）。排列通道结构可有效提高纵向热导率并降低吸附阻力。通过MXene和石墨烯的改性，该气凝胶实现了高效的光/电热转换，从而确保其能适应各种工作环境。快速发热可显著降低原油粘度，实现快速回收。在一个太阳光照（1.0 kW/m）下，M-Mxene/Gr CA的表面温度可达72.6℃，其对高粘度原油的吸附能力达到18 g/g。结合光热和电热（0.5 kW/m和23 V），原油的平均吸附速率可达1.3×10 g m s。最后，我们展示了一种在泵的辅助下回收近海原油泄漏的连续吸附系统。这项工作因其环境友好性和快速吸附能力，为解决高粘度近海原油泄漏提供了一种新选择。
