干旱区生态环境知识资源中心(Arid): Silicone oils aided fabrication of paraffin wax coated super-hydrophobic sand: A spectroscopic study

Arid

DOI	10.1016/j.heliyon.2023.e20874
	Silicone oils aided fabrication of paraffin wax coated super-hydrophobic sand: A spectroscopic study
	Al-Mokhalelati, K.; Karabet, F.; Allaf, A. W.; Naddaf, M.; Assfour, B.; Al Lafi, A. G.
通讯作者	Al-Mokhalelati, K
来源期刊	HELIYON
EISSN	2405-8440
出版年	2023
卷号	9 期号:10
英文摘要	To address the global alarm of desertification and boost plant progress in arid and desert environments, super-hydrophobic sand has been suggested and fabricated in numerous researches. In the present work, sand was hydrophobized by coating with a mixture of paraffin wax and silicone oils. The contact angle (CA) of sand with 4.5 w% silicone oils increased from 143.2 degrees to 154.2 degrees with decreasing the chain size of silicone oil, and the further addition of 13.5 w% of paraffin wax produced a super hydrophobic sand with a CA value up to 160 degrees comparing to 154.2 degrees without added paraffin wax. The Fourier Transform Infrared spectra suggested the development of inter molecular forces between silicone oil and sand as well as between paraffin and silicone oil, the driving force of which was the variation in viscosity of silicone oils. The later was higher in the case of lower molecular weight silicone oil. In particular, analyzing the characteristic bands of -(CH2)n-in paraffin wax, i.e. the corresponding bands at 720, 730, 1460 and 1470 cm � 1 and the two bands at 1020 and 1095 cm � 1 of silicone oil revealed that two roles of paraffin were taking place. While paraffin was placed between sand and silicone oil, it coated the sand particles when lower molecular weight silicone oil was used in the first procedures, whereas it coated the higher molecular weight silicone oil in the second procedures. Molecular dynamic calculation has been performed and confirmed the previous reached conclusions and showed that paraffin molecules were encapsulated in a silicone oil shell. The average adsorption energy of paraffin and silicon oil molecules on sand particles were 29.5 and 38.9 kcal mol- 1 respectively.
英文关键词	Sand Silicone oil Paraffin wax Super -hydrophobic sand Fourier transform infrared spectroscopy Molecular dynamic
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001112893300001
WOS关键词	CRYSTALLINE SILICA ; SPECTROPHOTOMETRY ; SAMPLES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396826
推荐引用方式 GB/T 7714	Al-Mokhalelati, K.,Karabet, F.,Allaf, A. W.,et al. Silicone oils aided fabrication of paraffin wax coated super-hydrophobic sand: A spectroscopic study[J],2023,9(10).
APA	Al-Mokhalelati, K.,Karabet, F.,Allaf, A. W.,Naddaf, M.,Assfour, B.,&Al Lafi, A. G..(2023).Silicone oils aided fabrication of paraffin wax coated super-hydrophobic sand: A spectroscopic study.HELIYON,9(10).
MLA	Al-Mokhalelati, K.,et al."Silicone oils aided fabrication of paraffin wax coated super-hydrophobic sand: A spectroscopic study".HELIYON 9.10(2023).