A multifunctional composite membrane with photocatalytic, self-cleaning, oil/water separation and antibacterial properties

Abstract

Multifunctional composite materials have attracted wide attention because they can be applied in many fields, and have great potential for application. The superhydrophobic surface has been favored by scientists in recent years because of its excellent properties. In this paper, carbon fabric (CF) with high porosity, good electrical conductivity and excellent flexibility was selected as substrate. The CF/Zr-TiO2/PDMS composites were prepared by solvo-thermal method on carbon fabric and modified by PDMS, which can be used in the fields of self-cleaning, self-healing, oil/water separation, antibacterial, anti-icing and so on. Furthermore, the PDMS modification has no or negligible adverse effect on the important textile physical properties of the carbon fabric. The effects of different process parameters on the structure and properties of CF/Zr-TiO2 were studied, and the samples with the best conditions were obtained. The results show that the sample achieves the transformation from superhydrophilic to superhydrophobic after modification. The CF/Zr-TiO2/PDMS composite structure not only shows excellent photocatalytic activity, but also has a certain self-cleaning ability. The samples before and after modification can separate light oil/water and heavy oil/water respectively. Compared with CF/Zr-TiO2, CF/Zr-TiO2/PDMS has better anti-Escherichia coli ability.

Self-Healing Silicone Materials: Looking Back and Moving Forward

“…In general, silicone rubbers with SH ability have broad applications in nanotechnology, optoelectronics, biomedicine, soft robotics and human activity [ 11 , 13 , 14 , 15 , 16 , 17 ]. Various protective coatings with a long service life [ 9 , 26 , 27 , 53 , 54 , 110 , 120 , 125 , 139 , 144 , 145 ], electromagnetic shielding films [ 57 , 99 ], triboelectric nanogenerators [ 126 , 130 ], sensors and skin-inspired electronics [ 49 , 101 , 118 , 124 , 127 , 129 , 131 , 134 , 136 , 141 , 143 , 144 , 146 , 147 , 148 , 149 ], actuators and artificial muscles [ 8 , 44 , 66 , 107 , 118 , 126 , 147 , 148 , 150 ], separating membranes [ 151 ], liquid crystals [ 152 ], and flexible and stretchable luminescent and electroluminescent devices […”

A Review of Recent Advances in the Development of Superhydrophobicity over Various Substrate Surfaces Using Polymers

“…Like all other fabrics it also used in the separation of heavy oil and water and antibacterial activity towards Escherichia coli. [53]…”

A robust superhydrophobic and superoleophilic SA-HKUST-1 membrane for efficient oil/water mixture separation

“…36,37 The membrane separation method has attracted huge attention and exploration from many scholars at home and abroad in the field of oil-water separation because of its advantages, such as simple equipment, easy operation, low energy consumption, environmental protection, and adaptability. [38][39][40] This method still has problems such as low selectivity, membrane clogging, etc. As a new multifunctional material freely assembled by metal ions and organic ligands through chemical bonding, the metal-organic framework (MOF) has the advantages of large specific surface area, adjustable pore space, high crystallinity, strong thermal stability, orderly structural arrangement, and high tunable function.…”