One pot synthesis of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials with zinc oxide nanorods

Myo Tay Zar Myint; Gabor L. Hornyak; Joydeep Dutta

doi:10.1016/j.jcis.2013.10.015

One pot synthesis of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials with zinc oxide nanorods

Myo Tay Zar Myint^*, Gabor L. Hornyak, Joydeep Dutta

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

The synthesis in one pot1One-pot synthesis indicates that the two-step chemical synthesis on cloth surfaces was accomplished simultaneously for each cloth in one vessel (or one beaker).¹ of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials from commercially available superhydrophilic cloth substrates of varying texture is described for the first time. Surfaces of 'rough' textured cloth and 'smooth' textured cloth were simultaneously rendered superhydrophobic by growing zinc oxide (ZnO) nanorods by a hydrothermal process in the same chemical bath. Contact angle hysteresis and water pendant drop tests revealed strong water adhesion to ZnO microrod-treated rough cloth. The combination of water contact angle >150° and strong adhesion is indicative of the 'rose petal effect' with potential for water pinning. Smooth cloth with ZnO nanorods exhibited no adhesion to water droplets with facilitative roll-off. The combination of water contact angle >50° and weak to no adhesion with water is indicative of the 'lotus leaf effect' with potential for self-cleaning. Pendant water drop tests indicated cohesive failure of water on rough cloth coated with ZnO nanorods. Natural rose petals demonstrated adhesive failure between the petal surface and water droplet. A parsimonious explanation is presented. We also describe the development of superhydrophobic clothes without the need for special conditions or further chemical modification.

Original language	English
Pages (from-to)	32-38
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	415
DOIs	https://doi.org/10.1016/j.jcis.2013.10.015
Publication status	Published - Feb 1 2014

Keywords

Cloth
Contact angle
Lotus leaf
Microrod
Nanorod
Pendant drop
Rose petal
Sliding angle
Superhydrophobic
Zinc oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

Access to Document

10.1016/j.jcis.2013.10.015

Cite this

@article{1323c990bc9e42af890df470500d75f1,

title = "One pot synthesis of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials with zinc oxide nanorods",

abstract = "The synthesis in one pot1One-pot synthesis indicates that the two-step chemical synthesis on cloth surfaces was accomplished simultaneously for each cloth in one vessel (or one beaker).1 of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials from commercially available superhydrophilic cloth substrates of varying texture is described for the first time. Surfaces of 'rough' textured cloth and 'smooth' textured cloth were simultaneously rendered superhydrophobic by growing zinc oxide (ZnO) nanorods by a hydrothermal process in the same chemical bath. Contact angle hysteresis and water pendant drop tests revealed strong water adhesion to ZnO microrod-treated rough cloth. The combination of water contact angle >150° and strong adhesion is indicative of the 'rose petal effect' with potential for water pinning. Smooth cloth with ZnO nanorods exhibited no adhesion to water droplets with facilitative roll-off. The combination of water contact angle >50° and weak to no adhesion with water is indicative of the 'lotus leaf effect' with potential for self-cleaning. Pendant water drop tests indicated cohesive failure of water on rough cloth coated with ZnO nanorods. Natural rose petals demonstrated adhesive failure between the petal surface and water droplet. A parsimonious explanation is presented. We also describe the development of superhydrophobic clothes without the need for special conditions or further chemical modification.",

keywords = "Cloth, Contact angle, Lotus leaf, Microrod, Nanorod, Pendant drop, Rose petal, Sliding angle, Superhydrophobic, Zinc oxide",

author = "Myint, {Myo Tay Zar} and Hornyak, {Gabor L.} and Joydeep Dutta",

note = "Funding Information: We would like to thank Dr. Sunandan Baruah for valuable discussions and also to Mr. Robert Lanzo, General Dynamics Convair Division (retired) for contributions. The authors would like to acknowledge the financial support from Sheikh Saqr Al Qasimi Graduate Research Fellowship, United Arab Emirates and partial financial support from the National Nanotechnology Center of the National Science and Technology Development Agency (NSTDA), Ministry of Science and Technology (MOST), Thailand and the Center of Excellence in Nanotechnology at the Asian Institute of Technology, Thailand. Authors also would like to acknowledge Western Digital (Thailand) for allowing us to use ultra-fast digital camera Photron Ultima APX-RS. ",

year = "2014",

month = feb,

day = "1",

doi = "10.1016/j.jcis.2013.10.015",

language = "English",

volume = "415",

pages = "32--38",

journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - One pot synthesis of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials with zinc oxide nanorods

AU - Myint, Myo Tay Zar

AU - Hornyak, Gabor L.

AU - Dutta, Joydeep

N1 - Funding Information: We would like to thank Dr. Sunandan Baruah for valuable discussions and also to Mr. Robert Lanzo, General Dynamics Convair Division (retired) for contributions. The authors would like to acknowledge the financial support from Sheikh Saqr Al Qasimi Graduate Research Fellowship, United Arab Emirates and partial financial support from the National Nanotechnology Center of the National Science and Technology Development Agency (NSTDA), Ministry of Science and Technology (MOST), Thailand and the Center of Excellence in Nanotechnology at the Asian Institute of Technology, Thailand. Authors also would like to acknowledge Western Digital (Thailand) for allowing us to use ultra-fast digital camera Photron Ultima APX-RS.

PY - 2014/2/1

Y1 - 2014/2/1

N2 - The synthesis in one pot1One-pot synthesis indicates that the two-step chemical synthesis on cloth surfaces was accomplished simultaneously for each cloth in one vessel (or one beaker).1 of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials from commercially available superhydrophilic cloth substrates of varying texture is described for the first time. Surfaces of 'rough' textured cloth and 'smooth' textured cloth were simultaneously rendered superhydrophobic by growing zinc oxide (ZnO) nanorods by a hydrothermal process in the same chemical bath. Contact angle hysteresis and water pendant drop tests revealed strong water adhesion to ZnO microrod-treated rough cloth. The combination of water contact angle >150° and strong adhesion is indicative of the 'rose petal effect' with potential for water pinning. Smooth cloth with ZnO nanorods exhibited no adhesion to water droplets with facilitative roll-off. The combination of water contact angle >50° and weak to no adhesion with water is indicative of the 'lotus leaf effect' with potential for self-cleaning. Pendant water drop tests indicated cohesive failure of water on rough cloth coated with ZnO nanorods. Natural rose petals demonstrated adhesive failure between the petal surface and water droplet. A parsimonious explanation is presented. We also describe the development of superhydrophobic clothes without the need for special conditions or further chemical modification.

AB - The synthesis in one pot1One-pot synthesis indicates that the two-step chemical synthesis on cloth surfaces was accomplished simultaneously for each cloth in one vessel (or one beaker).1 of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials from commercially available superhydrophilic cloth substrates of varying texture is described for the first time. Surfaces of 'rough' textured cloth and 'smooth' textured cloth were simultaneously rendered superhydrophobic by growing zinc oxide (ZnO) nanorods by a hydrothermal process in the same chemical bath. Contact angle hysteresis and water pendant drop tests revealed strong water adhesion to ZnO microrod-treated rough cloth. The combination of water contact angle >150° and strong adhesion is indicative of the 'rose petal effect' with potential for water pinning. Smooth cloth with ZnO nanorods exhibited no adhesion to water droplets with facilitative roll-off. The combination of water contact angle >50° and weak to no adhesion with water is indicative of the 'lotus leaf effect' with potential for self-cleaning. Pendant water drop tests indicated cohesive failure of water on rough cloth coated with ZnO nanorods. Natural rose petals demonstrated adhesive failure between the petal surface and water droplet. A parsimonious explanation is presented. We also describe the development of superhydrophobic clothes without the need for special conditions or further chemical modification.

KW - Cloth

KW - Contact angle

KW - Lotus leaf

KW - Microrod

KW - Nanorod

KW - Pendant drop

KW - Rose petal

KW - Sliding angle

KW - Superhydrophobic

KW - Zinc oxide

UR - http://www.scopus.com/inward/record.url?scp=84887390825&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887390825&partnerID=8YFLogxK

U2 - 10.1016/j.jcis.2013.10.015

DO - 10.1016/j.jcis.2013.10.015

M3 - Article

C2 - 24267327

AN - SCOPUS:84887390825

SN - 0021-9797

VL - 415

SP - 32

EP - 38

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

One pot synthesis of opposing 'rose petal' and 'lotus leaf' superhydrophobic materials with zinc oxide nanorods

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this