To investigate the stability of as-prepared textile in various oils, the water contact angle and separation efficiency is also displayed after the textiles are immersed into different oils for 36 h (Fig. 11). Before every water contact angle or separation efficiency measure- ment, the immersed textile was washed with ethanol for three times. It can be seen that there is no obvious decrease in the water contact angle (Fig. 11a) and separation efficiency (Fig. 11b) after immersing the textiles into n-hexane, toluene, chloroform, gaso- line, and diesel for 36h. The stable hydrophobicity after the immersion indicates that the as-prepared textile is chemically stable to resist the corrosion from a series of oils. The results also imply that the fly ash coating is robustly immobilized onto the tex- tile surface and no flaking of the coating occur in the oil immersion process. Therefore, the as-prepared textile is a promising material for the separation of oils from corrosive water environment due to low cost, environmental friendliness, and excellent chemical durability.