Janus纳米材料合成、表征及其在提高石油采收率中的应用研究进展

Synthesis,Characterization of Janus Nanomaterials and Their Applications in Enhanced Oil Recovery

Janus纳米材料(JNMs)是指具有不同物理或化学性质的非对称结构组成的纳米材料,表现出催化效率高、易于回收等功能特性。介绍了普通纳米材料和JNMs的区别;比较了JNMs的合成方法(模板法、相分离法、自组装法)和表征技术(TEM、FTIR、EDX等);综述了JNMs在提高石油采收率方面的应用进展;重点阐述了JNMs提高石油采收率的作用机理:降低界面张力、改变岩石表面润湿性、改善乳液稳定性和结构分离压力;并对JNMs的研究方向进行了展望。为大规模推广JNMs在提高石油采收率方面的应用奠定了基础。

Janus nanomaterials(JNMs)are a collection of materials with different physical or chemical properties,which exhibit functional properties such as high catalytic efficiency and easy recovery.In this paper,we introduce the difference between ordinary nanomaterials and JNMs,and compared the synthetic methods and characterization techniques of JNMs,including template method,phase separation method,self-assembly method and TEM,FTIR,EDX,etc.Moreover,we review the applications of JNMs in enhanced oil recovery(EOR),and summarize the EOR mechanism of JNMs,namely,reducing the interfacial tension,changing the wettability of rock surface,improving the emulsion stability,and modifying the structural separation pressure.Furthermore,we propose the research directions of JNMs.This review lays a foundation for the large-scale promotion of the application of JNMs in EOR.