Novel superhydrophobic surface of cotton fabrics for removing oil or organic solvents from contaminated water
- PDF / 2,680,067 Bytes
- 17 Pages / 547.087 x 737.008 pts Page_size
- 99 Downloads / 233 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL RESEARCH
Novel superhydrophobic surface of cotton fabrics for removing oil or organic solvents from contaminated water Ahmed S. Belal . M. M. A. Khalil
. Moataz Soliman . Shaker Ebrahim
Received: 28 March 2020 / Accepted: 24 June 2020 Ó Springer Nature B.V. 2020
Abstract Surface science such as superhydrophobic and superoleophilic surfaces plays a sensitive function in a separating oil/water mixture as a result of increasing industrial oil and organic solvents drainage occurrence. In this work, copper hydroxide nanoneedles layer were synthesized onto Egyptian cotton fabrics (CF) treated with polydopamine, Ag nanoparticles (NPs) and Cu NPs via facile immersion process. Fourier transform infrared, X-ray diffraction and scanning electron microscope (SEM) were used to investigate the functionalized surface of CF with copper hydroxide layer. SEM images confirmed that
the modified membranes were rougher compared with pure surface of CF. The contact angle measurement emphasized the hydrophobicity of the modified membranes and it was found that the water contact angle has a value of 168°. The absorption capacity of the modified CF membrane was 10.1 g g - 1 for diesel oil and the separation efficiency of this modified surface was higher than 99%. It was noted that the flux in the case of low viscosity solvent as n-hexane was 72,172.9 Lm- 2 h- 1, while for the viscous oil as diesel was 14,460.3 Lm- 2 h- 1.
A. S. Belal M. Soliman S. Ebrahim Materials Science Department, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 832, Alexandria, Egypt M. M. A. Khalil (&) Nanotechnology and Composite Materials Department, Institute of New Materials and Advanced Technology, City of Scientific Research and Technological Applications (SRTA-City), P.O. Box 21934, New Borg El Arab City, Alexandria, Egypt e-mail: [email protected]
123
Cellulose
Graphic abstract CF substrate Dopamine 2 mg/mL
AgNO3
10% CuSO4
0.05 M
NaOH
6 hr
37%formaldehyde
pH 8.5 24 hr
30 min
1 M NaOH and 0.05 M (NH4)2S2O8 for 30 min
n-dodecanethiol modification 30 min Oil separation process Water
Water
PD Ag NPs
Oil Cu NPs Cu(OH)2 Superhydrophobic
n-dodecanethiol Oil
Keywords Superhydrophobic Nanoneedles Cotton fabric Oil separation Ag nanoparticles Cu nanoparticles
Introduction The development of textile, steel, metallurgy, pharmaceutical, food, petrochemical, and other industries have provided a large quantity of oily wastewater, that can be an essential provenance of water contamination and environmental troubles to water surfaces. This is caused also an economic crisis. The separation of the oil from water is a worldwide confronts, and extensive struggle is generated to solve this issue (Guan et al. 2019; Yong et al. 2018; Naseem et al. 2018; Zhang et al. 2017; Arumugham et al. 2016). Various physical and chemical technologies have been utilized to separate the oil/water mixtures such as air floatation, coagulation, centrifugation, electro
Data Loading...
