In Situ Crystallized Zirconium Phenylphosphonate Films on the Copper Mesh and Its Application in Oil/water Separation†

doi:10.7503/cjcu20160575

Abstract

Abstract:

In situ crystallized zirconium phenylphosphonate films on the copper mesh using hydrothermal method have superhydrophobic and superhydrophobic properties due to benzene ring being arranged in the outermost layer of zirconium phenyl phosphonate and its micro-nano roughened structure. This material can selectively filter oil from oil/water mixtures without any low-surface-energy material modification. The crystallized zirconium phenylphosphonate films on copper mesh have both mechanical stability and chemical stability. In addition to separation of oil/water mixtures, the copper mesh with ZrPP crystallization are capable of separating surfactant-free oil-in-water and water-in-oil emulsion efficiently, which can be a candidate to be applied in the actual production process.

Key words: Superhydrophobic, Superlipophilic, Oil/water separation, Zirconium phenylphosphonate, Emulsified oil

CLC Number:

O647.5

TrendMD:

LI Qintao, SUN Wen, ZHANG Qin, PAN Huifen, XU Jie. In Situ Crystallized Zirconium Phenylphosphonate Films on the Copper Mesh and Its Application in Oil/water Separation^†[J]. Chem. J. Chinese Universities, 2017, 38(3): 464.

Figures/Tables 11

Fig.1 Contact angles(CA) of water droplets on crystalized copper-mesh surface with different reaction time

Fig.2 XRD patterns of the crystallized material(a) and the standard ZrPP(b)

Fig.3 FTIR spectrum of the crystallized material scraped on the copper mesh

Fig.4 SEM images of the copper mesh before and after crystallization as well as the contact angle of water droplets on their surface (A) Copper mesh; (B) crystallized copper mesh; (C) and (D) the magnified pictures of (B). The insets of (A) and (B) are the contact angle of water droplets on their respective surface.

Fig.5 Permeation process of oil droplets on the surface of copper mesh with ZrPP crystallization

Fig.6 Variation of contact angle of water droplets on copper mesh with ZrPP crystallization as a function of pH value

Fig.7 SEM images(A, B) of cross-section of ZrPP crystallization on copper mesh and the ×10 microscope image(C) of ZrPP crystallized surface scratched with knife

Fig.8 Oil/water separation through the copper mesh with ZrPP crystallization before(A) and after(B) separation Water is dyed by helianthin B.

Fig.9 Breakthrough pressure of water on copper mesh with ZrPP crystallization

Fig.10 Relationship between the pore diameter of mesh and the water contact angle on the copper mesh with ZrPP crystallization

Fig.11 Emulsified oil separation through the copper mesh with ZrPP crystallization (A) and (B) are before and after separating process of oil-in-water emulsion; (C) and (D) are before and after separating process of water-in-oil emulsion.

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