Hydrophobicity and Adhesion of Aggregated Diamond Particles

Kaili Yao; Bing Dai; Paul W. May; Xiaojun Tan; Jiecai Han; Jiaqi Zhu

doi:10.1002/pssa.202000355

Hydrophobicity and Adhesion of Aggregated Diamond Particles

Kaili Yao, Bing Dai, Paul W. May, Xiaojun Tan, Jiecai Han, Jiaqi Zhu

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

4 Scopus citations

Abstract

Diamond powders with high hydrophobicity are prepared by etching graphite plates using a hydrogen/argon (H₂/Ar) plasma. The morphology and size of the diamond powders are found to vary with the proportion of Ar in H₂ from 0% to 50%. Wettability is measured using water contact angle (WCA) measurements giving values between 129.7° and 146.9°. The high hydrophobicity can be ascribed to the aggregated structure of the as-grown diamond powders. To check this assumption, the aggregated diamond powders are separated into individual particles by mechanical grinding; then, the WCAs of separated as-grown diamond powders and commercial dispersed diamond powders are compared. The separated diamond surfaces show the lower WCAs of 99.68° and 96.96°. The surface of the aggregated diamond powders also exhibits high adhesion to water. The diamond surface grown in 2% Ar suspends 40 μL of water under a tilt angle of 180°. Such aggregated diamond powders are promising for no-loss liquid transportation.

Original language	English
Article number	2000355
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	218
Issue number	5
DOIs	https://doi.org/10.1002/pssa.202000355
State	Published - Mar 2021
Externally published	Yes

Keywords

adhesive force
aggregated diamond powders
etching
graphite
hydrophobicity

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title = "Hydrophobicity and Adhesion of Aggregated Diamond Particles",

abstract = "Diamond powders with high hydrophobicity are prepared by etching graphite plates using a hydrogen/argon (H2/Ar) plasma. The morphology and size of the diamond powders are found to vary with the proportion of Ar in H2 from 0% to 50%. Wettability is measured using water contact angle (WCA) measurements giving values between 129.7° and 146.9°. The high hydrophobicity can be ascribed to the aggregated structure of the as-grown diamond powders. To check this assumption, the aggregated diamond powders are separated into individual particles by mechanical grinding; then, the WCAs of separated as-grown diamond powders and commercial dispersed diamond powders are compared. The separated diamond surfaces show the lower WCAs of 99.68° and 96.96°. The surface of the aggregated diamond powders also exhibits high adhesion to water. The diamond surface grown in 2% Ar suspends 40 μL of water under a tilt angle of 180°. Such aggregated diamond powders are promising for no-loss liquid transportation.",

keywords = "adhesive force, aggregated diamond powders, etching, graphite, hydrophobicity",

author = "Kaili Yao and Bing Dai and May, {Paul W.} and Xiaojun Tan and Jiecai Han and Jiaqi Zhu",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2021",

month = mar,

doi = "10.1002/pssa.202000355",

language = "英语",

volume = "218",

journal = "Physica Status Solidi (A) Applications and Materials Science",

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TY - JOUR

T1 - Hydrophobicity and Adhesion of Aggregated Diamond Particles

AU - Yao, Kaili

AU - Dai, Bing

AU - May, Paul W.

AU - Tan, Xiaojun

AU - Han, Jiecai

AU - Zhu, Jiaqi

PY - 2021/3

Y1 - 2021/3

N2 - Diamond powders with high hydrophobicity are prepared by etching graphite plates using a hydrogen/argon (H2/Ar) plasma. The morphology and size of the diamond powders are found to vary with the proportion of Ar in H2 from 0% to 50%. Wettability is measured using water contact angle (WCA) measurements giving values between 129.7° and 146.9°. The high hydrophobicity can be ascribed to the aggregated structure of the as-grown diamond powders. To check this assumption, the aggregated diamond powders are separated into individual particles by mechanical grinding; then, the WCAs of separated as-grown diamond powders and commercial dispersed diamond powders are compared. The separated diamond surfaces show the lower WCAs of 99.68° and 96.96°. The surface of the aggregated diamond powders also exhibits high adhesion to water. The diamond surface grown in 2% Ar suspends 40 μL of water under a tilt angle of 180°. Such aggregated diamond powders are promising for no-loss liquid transportation.

AB - Diamond powders with high hydrophobicity are prepared by etching graphite plates using a hydrogen/argon (H2/Ar) plasma. The morphology and size of the diamond powders are found to vary with the proportion of Ar in H2 from 0% to 50%. Wettability is measured using water contact angle (WCA) measurements giving values between 129.7° and 146.9°. The high hydrophobicity can be ascribed to the aggregated structure of the as-grown diamond powders. To check this assumption, the aggregated diamond powders are separated into individual particles by mechanical grinding; then, the WCAs of separated as-grown diamond powders and commercial dispersed diamond powders are compared. The separated diamond surfaces show the lower WCAs of 99.68° and 96.96°. The surface of the aggregated diamond powders also exhibits high adhesion to water. The diamond surface grown in 2% Ar suspends 40 μL of water under a tilt angle of 180°. Such aggregated diamond powders are promising for no-loss liquid transportation.

KW - adhesive force

KW - aggregated diamond powders

KW - etching

KW - graphite

KW - hydrophobicity

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DO - 10.1002/pssa.202000355

M3 - 文章

AN - SCOPUS:85096680957

SN - 1862-6300

VL - 218

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 5

M1 - 2000355

ER -

Hydrophobicity and Adhesion of Aggregated Diamond Particles

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Keywords

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