Abstract
Formation of BaF2 microcrystals as superhydrophobic materials via a hydrothermal method
Highlights
The results show that uniform BaF2 tetragonal phase structure was fabricated when the reaction temperature was controlled at 180 oC for 24 h
The results about the influence of time and substrates exhibit that the sample can maintain the stable super-hydrophobic property for over 10 days
The water at pH = 9 contact angle reaches around 156o after 10 days and its contact angle maintains above 150 o in 40 days, these results shows that the BaF2 materials have an excellent superhydrophobic properties which can keep stable for a long time
Summary
Numerous methods were used to synthesize the BaF2 Crystals in previous reports, such as chemical precipitation, flame process, microemulsion, hydrothermal method, liquid–solid–solution method, thermal decomposition of trifluoroacetates, and so on[13,14,15,16,17,18,19,20,21]. Glazunova and Boltalin et al used the thermal decomposition of trifluoroacetate complexes, annealled the fluoride materials in an oxygen flow at 500 ° C for the preparation of barium fluoride[18]. Among these preparation method, hydrothermal method was successfull for the synthesis of unique condensed functional materials and it can provide a stable and gentle reaction conditions[22, 23]. The BaF2 material can be used as a new type of superhydrophobic material with the increasing requirements in related fields
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