Synthesis, characterization, and humidity-responsiveness of guar gum xanthate and its nanocomposite with copper sulfide covellite

Trung-Anh Le; Morad Zouheir; Kostiantyn Nikiforow; Muhammad Khatib; Orr Zohar; Hossam Haick; Tan-Phat Huynh

doi:10.1016/j.ijbiomac.2022.02.132

Synthesis, characterization, and humidity-responsiveness of guar gum xanthate and its nanocomposite with copper sulfide covellite

Trung-Anh Le
, Morad Zouheir
, Kostiantyn Nikiforow
, Muhammad Khatib
, Orr Zohar
, Hossam Haick
, Tan-Phat Huynh^*

^*Corresponding author for this work

Laboratory of Molecular Science and Engineering

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

11 Citations (Scopus)

113 Downloads (Pure)

Abstract

A novel conjugation of guar gum with xanthate groups via facile aqueous xanthation reaction has been reported. Density of grafted xanthate on guar gum product (GG-X) is as high as 4.4%, thus GG-X is conceivably characterized and confirmed by various spectrometric, electrochemical, thermogravimetric, and microscopic methods. Complexation of GG-X with numerous borderline and soft metal ions (e.g. Fe²⁺, Co²⁺, Ni²⁺, Cu²⁺, Pb²⁺, Pt²⁺ and Cd²⁺) yields hydrophilic gel-like materials and shows good agreement with hard and soft acid and base (HSAB) theory. This indicates tremendous potential of GG-X in metal ion extraction, removal and hydrogel cross-linking. GG-X is also employed to formulate an aqueous colloidal dispersion of copper sulfide covellite (GG-X/CuS) nanocomposites. GG-X therefore behaves as a surfactant, allowing formation of electronically conductive nanocomposites. XRD indicates apparent beneficial effects of GG-X in the synthesis of CuS with a crystallite size of 15.6 nm. This novel nanocomposite is a promising material for humidity sensing, showing reversible linear responses to relative humidity changes within 10 to 80% range. The interaction between GG-X and water might cause changes in electrical permittivity of GG-X/CuS nanocomposite and/or electrical hopping conductivity between CuS nanoparticles.

Original language	English
Pages (from-to)	105-114
Number of pages	10
Journal	International Journal of Biological Macromolecules
Volume	206
DOIs	https://doi.org/10.1016/j.ijbiomac.2022.02.132
Publication status	Published - 1 May 2022
MoE publication type	A1 Journal article-refereed

Funding

T.-A. Le acknowledges the DNMR doctoral fellowship from Åbo Akademi University and T.-P. Huynh acknowledges the Liv och Hälsa Foundation and the Academy of Finland (Grant No. 323240 and 331774 ) for financial support. T.-A. Le acknowledges the DNMR doctoral fellowship from ?bo Akademi University and T.-P. Huynh acknowledges the Liv och H?lsa Foundation and the Academy of Finland (Grant No. 323240 and 331774) for financial support.

Keywords

Covellite nanocomposite
Gel-like materials
Guar gum xanthate
Humidity sensing
Metal ion complexation

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10.1016/j.ijbiomac.2022.02.132Licence: CC BY

1-s2.0-S0141813022003841-mainFinal published version, 7.35 MBLicence: CC BY

https://urn.fi/URN:NBN:fi-fe2022112366536

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@article{7dbe9e7bbb0c4531a471f85db591bdfc,

title = "Synthesis, characterization, and humidity-responsiveness of guar gum xanthate and its nanocomposite with copper sulfide covellite",

abstract = "A novel conjugation of guar gum with xanthate groups via facile aqueous xanthation reaction has been reported. Density of grafted xanthate on guar gum product (GG-X) is as high as 4.4\%, thus GG-X is conceivably characterized and confirmed by various spectrometric, electrochemical, thermogravimetric, and microscopic methods. Complexation of GG-X with numerous borderline and soft metal ions (e.g. Fe2+, Co2+, Ni2+, Cu2+, Pb2+, Pt2+ and Cd2+) yields hydrophilic gel-like materials and shows good agreement with hard and soft acid and base (HSAB) theory. This indicates tremendous potential of GG-X in metal ion extraction, removal and hydrogel cross-linking. GG-X is also employed to formulate an aqueous colloidal dispersion of copper sulfide covellite (GG-X/CuS) nanocomposites. GG-X therefore behaves as a surfactant, allowing formation of electronically conductive nanocomposites. XRD indicates apparent beneficial effects of GG-X in the synthesis of CuS with a crystallite size of 15.6 nm. This novel nanocomposite is a promising material for humidity sensing, showing reversible linear responses to relative humidity changes within 10 to 80\% range. The interaction between GG-X and water might cause changes in electrical permittivity of GG-X/CuS nanocomposite and/or electrical hopping conductivity between CuS nanoparticles.",

keywords = "Covellite nanocomposite, Gel-like materials, Guar gum xanthate, Humidity sensing, Metal ion complexation",

author = "Trung-Anh Le and Morad Zouheir and Kostiantyn Nikiforow and Muhammad Khatib and Orr Zohar and Hossam Haick and Tan-Phat Huynh",

note = "Funding Information: T.-A. Le acknowledges the DNMR doctoral fellowship from {\AA}bo Akademi University and T.-P. Huynh acknowledges the Liv och H{\"a}lsa Foundation and the Academy of Finland (Grant No. 323240 and 331774 ) for financial support. Publisher Copyright: {\textcopyright} 2022 The Authors",

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doi = "10.1016/j.ijbiomac.2022.02.132",

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T1 - Synthesis, characterization, and humidity-responsiveness of guar gum xanthate and its nanocomposite with copper sulfide covellite

AU - Le, Trung-Anh

AU - Zouheir, Morad

AU - Nikiforow, Kostiantyn

AU - Khatib, Muhammad

AU - Zohar, Orr

AU - Haick, Hossam

AU - Huynh, Tan-Phat

N1 - Funding Information: T.-A. Le acknowledges the DNMR doctoral fellowship from Åbo Akademi University and T.-P. Huynh acknowledges the Liv och Hälsa Foundation and the Academy of Finland (Grant No. 323240 and 331774 ) for financial support. Publisher Copyright: © 2022 The Authors

PY - 2022/5/1

Y1 - 2022/5/1

N2 - A novel conjugation of guar gum with xanthate groups via facile aqueous xanthation reaction has been reported. Density of grafted xanthate on guar gum product (GG-X) is as high as 4.4%, thus GG-X is conceivably characterized and confirmed by various spectrometric, electrochemical, thermogravimetric, and microscopic methods. Complexation of GG-X with numerous borderline and soft metal ions (e.g. Fe2+, Co2+, Ni2+, Cu2+, Pb2+, Pt2+ and Cd2+) yields hydrophilic gel-like materials and shows good agreement with hard and soft acid and base (HSAB) theory. This indicates tremendous potential of GG-X in metal ion extraction, removal and hydrogel cross-linking. GG-X is also employed to formulate an aqueous colloidal dispersion of copper sulfide covellite (GG-X/CuS) nanocomposites. GG-X therefore behaves as a surfactant, allowing formation of electronically conductive nanocomposites. XRD indicates apparent beneficial effects of GG-X in the synthesis of CuS with a crystallite size of 15.6 nm. This novel nanocomposite is a promising material for humidity sensing, showing reversible linear responses to relative humidity changes within 10 to 80% range. The interaction between GG-X and water might cause changes in electrical permittivity of GG-X/CuS nanocomposite and/or electrical hopping conductivity between CuS nanoparticles.

AB - A novel conjugation of guar gum with xanthate groups via facile aqueous xanthation reaction has been reported. Density of grafted xanthate on guar gum product (GG-X) is as high as 4.4%, thus GG-X is conceivably characterized and confirmed by various spectrometric, electrochemical, thermogravimetric, and microscopic methods. Complexation of GG-X with numerous borderline and soft metal ions (e.g. Fe2+, Co2+, Ni2+, Cu2+, Pb2+, Pt2+ and Cd2+) yields hydrophilic gel-like materials and shows good agreement with hard and soft acid and base (HSAB) theory. This indicates tremendous potential of GG-X in metal ion extraction, removal and hydrogel cross-linking. GG-X is also employed to formulate an aqueous colloidal dispersion of copper sulfide covellite (GG-X/CuS) nanocomposites. GG-X therefore behaves as a surfactant, allowing formation of electronically conductive nanocomposites. XRD indicates apparent beneficial effects of GG-X in the synthesis of CuS with a crystallite size of 15.6 nm. This novel nanocomposite is a promising material for humidity sensing, showing reversible linear responses to relative humidity changes within 10 to 80% range. The interaction between GG-X and water might cause changes in electrical permittivity of GG-X/CuS nanocomposite and/or electrical hopping conductivity between CuS nanoparticles.

KW - Covellite nanocomposite

KW - Gel-like materials

KW - Guar gum xanthate

KW - Humidity sensing

KW - Metal ion complexation

UR - https://www.scopus.com/pages/publications/85125436344

U2 - 10.1016/j.ijbiomac.2022.02.132

DO - 10.1016/j.ijbiomac.2022.02.132

M3 - Article

C2 - 35219779

AN - SCOPUS:85125436344

SN - 0141-8130

VL - 206

SP - 105

EP - 114

JO - International Journal of Biological Macromolecules

JF - International Journal of Biological Macromolecules

ER -

Synthesis, characterization, and humidity-responsiveness of guar gum xanthate and its nanocomposite with copper sulfide covellite

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Keywords

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