Effect of pH on the morphology of magnetite nanoparticles for adsorption of Cr(VI) ions from aqueous medium

Basharat Khan; Mohsan Nawaz; Gareth J. Price; Rafaqat Hussain; Muhammad Waseem; Sirajul Haq; Wajid Rehman

doi:10.1080/01932691.2022.2053705

Effect of pH on the morphology of magnetite nanoparticles for adsorption of Cr(VI) ions from aqueous medium

Basharat Khan
, Mohsan Nawaz
, Gareth J. Price
, Rafaqat Hussain
, Muhammad Waseem
, Sirajul Haq
, Wajid Rehman

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

3 Scopus citations

Abstract

Magnetite nanoparticles (MNPs) are important candidates for environmental applications. In this study, we have synthesized MNPs by oil in water (o/w) microemulsion assisted co-precipitation method. The particles were obtained by varying the pH (10–12) of the solution. The synthesized MNPs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-rays diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-rays (EDX) spectroscopy. Based on the point of zero charge (PZC), sorption of Cr(VI) on MNPs was carried out at pH 6 by batch method. The synthesized MNPs were found highly efficient for sorption of Cr(VI) ions. The sorption efficiency of MNPs prepared at pH 10 showed the maximum uptake of 63.3 (±1.06) mg/g of Cr(VI) ions. The thermodynamic parameters of sorption process like enthalpy and entropy (ΔH and ΔS) were found positive while negatively increased trend of Gibb’s free energy (ΔG) was observed indicating that the sorption process is spontaneous and thermodynamically favorable.

Original language	British English
Pages (from-to)	1770-1777
Number of pages	8
Journal	Journal of Dispersion Science and Technology
Volume	44
Issue number	9
DOIs	https://doi.org/10.1080/01932691.2022.2053705
State	Published - 2023

Keywords

Adsorption
Chromium (VI)
magnetite
nanoparticles
pH

Access to Document

10.1080/01932691.2022.2053705

Cite this

@article{23c19d1c79954292b905f08f46acfff0,

title = "Effect of pH on the morphology of magnetite nanoparticles for adsorption of Cr(VI) ions from aqueous medium",

abstract = "Magnetite nanoparticles (MNPs) are important candidates for environmental applications. In this study, we have synthesized MNPs by oil in water (o/w) microemulsion assisted co-precipitation method. The particles were obtained by varying the pH (10–12) of the solution. The synthesized MNPs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-rays diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-rays (EDX) spectroscopy. Based on the point of zero charge (PZC), sorption of Cr(VI) on MNPs was carried out at pH 6 by batch method. The synthesized MNPs were found highly efficient for sorption of Cr(VI) ions. The sorption efficiency of MNPs prepared at pH 10 showed the maximum uptake of 63.3 (±1.06) mg/g of Cr(VI) ions. The thermodynamic parameters of sorption process like enthalpy and entropy (ΔH and ΔS) were found positive while negatively increased trend of Gibb{\textquoteright}s free energy (ΔG) was observed indicating that the sorption process is spontaneous and thermodynamically favorable.",

keywords = "Adsorption, Chromium (VI), magnetite, nanoparticles, pH",

author = "Basharat Khan and Mohsan Nawaz and Price, \{Gareth J.\} and Rafaqat Hussain and Muhammad Waseem and Sirajul Haq and Wajid Rehman",

note = "Publisher Copyright: {\textcopyright} 2022 Taylor \& Francis Group, LLC.",

year = "2023",

doi = "10.1080/01932691.2022.2053705",

language = "British English",

volume = "44",

pages = "1770--1777",

journal = "Journal of Dispersion Science and Technology",

issn = "0193-2691",

publisher = "Taylor and Francis Ltd.",

number = "9",

}

TY - JOUR

T1 - Effect of pH on the morphology of magnetite nanoparticles for adsorption of Cr(VI) ions from aqueous medium

AU - Khan, Basharat

AU - Nawaz, Mohsan

AU - Price, Gareth J.

AU - Hussain, Rafaqat

AU - Waseem, Muhammad

AU - Haq, Sirajul

AU - Rehman, Wajid

PY - 2023

Y1 - 2023

N2 - Magnetite nanoparticles (MNPs) are important candidates for environmental applications. In this study, we have synthesized MNPs by oil in water (o/w) microemulsion assisted co-precipitation method. The particles were obtained by varying the pH (10–12) of the solution. The synthesized MNPs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-rays diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-rays (EDX) spectroscopy. Based on the point of zero charge (PZC), sorption of Cr(VI) on MNPs was carried out at pH 6 by batch method. The synthesized MNPs were found highly efficient for sorption of Cr(VI) ions. The sorption efficiency of MNPs prepared at pH 10 showed the maximum uptake of 63.3 (±1.06) mg/g of Cr(VI) ions. The thermodynamic parameters of sorption process like enthalpy and entropy (ΔH and ΔS) were found positive while negatively increased trend of Gibb’s free energy (ΔG) was observed indicating that the sorption process is spontaneous and thermodynamically favorable.

AB - Magnetite nanoparticles (MNPs) are important candidates for environmental applications. In this study, we have synthesized MNPs by oil in water (o/w) microemulsion assisted co-precipitation method. The particles were obtained by varying the pH (10–12) of the solution. The synthesized MNPs were characterized by Fourier transform infrared (FTIR) spectroscopy, X-rays diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-rays (EDX) spectroscopy. Based on the point of zero charge (PZC), sorption of Cr(VI) on MNPs was carried out at pH 6 by batch method. The synthesized MNPs were found highly efficient for sorption of Cr(VI) ions. The sorption efficiency of MNPs prepared at pH 10 showed the maximum uptake of 63.3 (±1.06) mg/g of Cr(VI) ions. The thermodynamic parameters of sorption process like enthalpy and entropy (ΔH and ΔS) were found positive while negatively increased trend of Gibb’s free energy (ΔG) was observed indicating that the sorption process is spontaneous and thermodynamically favorable.

KW - Adsorption

KW - Chromium (VI)

KW - magnetite

KW - nanoparticles

KW - pH

UR - https://www.scopus.com/pages/publications/85127334663

U2 - 10.1080/01932691.2022.2053705

DO - 10.1080/01932691.2022.2053705

M3 - Article

AN - SCOPUS:85127334663

SN - 0193-2691

VL - 44

SP - 1770

EP - 1777

JO - Journal of Dispersion Science and Technology

JF - Journal of Dispersion Science and Technology

IS - 9

ER -

Effect of pH on the morphology of magnetite nanoparticles for adsorption of Cr(VI) ions from aqueous medium

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this