A novel magnetite nanorod-decorated Si-Schiff base complex for efficient immobilization of U(vi) and Pb(ii) from water solutions

Ayub Khan; Jinlu Xing; Ahmed Mourtada Elseman; Pengcheng Gu; Kashif Gul; Yuejie Ai; Riffat Jehan; Ahmed Alsaedi; Tasawar Hayat; Xiangke Wang

doi:10.1039/c8dt01213j

A novel magnetite nanorod-decorated Si-Schiff base complex for efficient immobilization of U(vi) and Pb(ii) from water solutions

Ayub Khan
, Jinlu Xing
, Ahmed Mourtada Elseman
, Pengcheng Gu
, Kashif Gul
, Yuejie Ai
, Riffat Jehan
, Ahmed Alsaedi
, Tasawar Hayat
, Xiangke Wang

North China Electric Power University
University of Peshawar
Central Metallurgical Research & Development Institute
Faculty of Sciences, King Abdulaziz University

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

43 Scopus citations

Abstract

A novel silicon Schiff base complex (Si-SBC) and magnetite nanorod-decorated Si-SBC (M/SiO₂-Si-SBC) were synthesized and well characterized in detail. The synthesized materials were applied for the removal of U(vi) and Pb(ii) from water solutions under various experimental conditions. The monolayer maximum adsorption capacities of M/SiO₂-Si-SBC (6.45 × 10^-4 mol g^-1 for Pb(ii) and 4.82 × 10^-4 mol g^-1 for U(vi)) obtained from the Langmuir model at 25 °C and pH = 5.00 ± 0.05 were higher than those of Si-SBC (5.18 × 10^-4 mol g^-1 for Pb(ii) and 3.70 × 10^-4 mol g^-1 for U(vi)). Moreover, DFT calculations showed that the high adsorption energies (E_ad) of 7.61 kcal mol^-1 for Pb²⁺-(Si-SBC) and 2.72 kcal mol^-1 for UO₂ ²⁺-(Si-SBC) are mainly attributed to stronger electrostatic interactions. The results revealed that the Si-SBC and M/SiO₂-Si-SBC could be used as efficient adsorbents for the effective elimination of U(vi) and Pb(ii) from contaminated wastewater. High sorption capacity and reusability indicated the practical applications of the synthesized materials in environmental pollution cleanup.

Original language	English
Pages (from-to)	11327-11336
Number of pages	10
Journal	Dalton Transactions
Volume	47
Issue number	33
DOIs	https://doi.org/10.1039/c8dt01213j
State	Published - 2018
Externally published	Yes

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

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10.1039/c8dt01213j

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@article{bfaf5b5a499d4c68b4e49d3c77db07a2,

title = "A novel magnetite nanorod-decorated Si-Schiff base complex for efficient immobilization of U(vi) and Pb(ii) from water solutions",

abstract = "A novel silicon Schiff base complex (Si-SBC) and magnetite nanorod-decorated Si-SBC (M/SiO2-Si-SBC) were synthesized and well characterized in detail. The synthesized materials were applied for the removal of U(vi) and Pb(ii) from water solutions under various experimental conditions. The monolayer maximum adsorption capacities of M/SiO2-Si-SBC (6.45 × 10-4 mol g-1 for Pb(ii) and 4.82 × 10-4 mol g-1 for U(vi)) obtained from the Langmuir model at 25 °C and pH = 5.00 ± 0.05 were higher than those of Si-SBC (5.18 × 10-4 mol g-1 for Pb(ii) and 3.70 × 10-4 mol g-1 for U(vi)). Moreover, DFT calculations showed that the high adsorption energies (Ead) of 7.61 kcal mol-1 for Pb2+-(Si-SBC) and 2.72 kcal mol-1 for UO2 2+-(Si-SBC) are mainly attributed to stronger electrostatic interactions. The results revealed that the Si-SBC and M/SiO2-Si-SBC could be used as efficient adsorbents for the effective elimination of U(vi) and Pb(ii) from contaminated wastewater. High sorption capacity and reusability indicated the practical applications of the synthesized materials in environmental pollution cleanup.",

author = "Ayub Khan and Jinlu Xing and Elseman, \{Ahmed Mourtada\} and Pengcheng Gu and Kashif Gul and Yuejie Ai and Riffat Jehan and Ahmed Alsaedi and Tasawar Hayat and Xiangke Wang",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/c8dt01213j",

language = "English",

volume = "47",

pages = "11327--11336",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "33",

}

TY - JOUR

T1 - A novel magnetite nanorod-decorated Si-Schiff base complex for efficient immobilization of U(vi) and Pb(ii) from water solutions

AU - Khan, Ayub

AU - Xing, Jinlu

AU - Elseman, Ahmed Mourtada

AU - Gu, Pengcheng

AU - Gul, Kashif

AU - Ai, Yuejie

AU - Jehan, Riffat

AU - Alsaedi, Ahmed

AU - Hayat, Tasawar

AU - Wang, Xiangke

PY - 2018

Y1 - 2018

N2 - A novel silicon Schiff base complex (Si-SBC) and magnetite nanorod-decorated Si-SBC (M/SiO2-Si-SBC) were synthesized and well characterized in detail. The synthesized materials were applied for the removal of U(vi) and Pb(ii) from water solutions under various experimental conditions. The monolayer maximum adsorption capacities of M/SiO2-Si-SBC (6.45 × 10-4 mol g-1 for Pb(ii) and 4.82 × 10-4 mol g-1 for U(vi)) obtained from the Langmuir model at 25 °C and pH = 5.00 ± 0.05 were higher than those of Si-SBC (5.18 × 10-4 mol g-1 for Pb(ii) and 3.70 × 10-4 mol g-1 for U(vi)). Moreover, DFT calculations showed that the high adsorption energies (Ead) of 7.61 kcal mol-1 for Pb2+-(Si-SBC) and 2.72 kcal mol-1 for UO2 2+-(Si-SBC) are mainly attributed to stronger electrostatic interactions. The results revealed that the Si-SBC and M/SiO2-Si-SBC could be used as efficient adsorbents for the effective elimination of U(vi) and Pb(ii) from contaminated wastewater. High sorption capacity and reusability indicated the practical applications of the synthesized materials in environmental pollution cleanup.

AB - A novel silicon Schiff base complex (Si-SBC) and magnetite nanorod-decorated Si-SBC (M/SiO2-Si-SBC) were synthesized and well characterized in detail. The synthesized materials were applied for the removal of U(vi) and Pb(ii) from water solutions under various experimental conditions. The monolayer maximum adsorption capacities of M/SiO2-Si-SBC (6.45 × 10-4 mol g-1 for Pb(ii) and 4.82 × 10-4 mol g-1 for U(vi)) obtained from the Langmuir model at 25 °C and pH = 5.00 ± 0.05 were higher than those of Si-SBC (5.18 × 10-4 mol g-1 for Pb(ii) and 3.70 × 10-4 mol g-1 for U(vi)). Moreover, DFT calculations showed that the high adsorption energies (Ead) of 7.61 kcal mol-1 for Pb2+-(Si-SBC) and 2.72 kcal mol-1 for UO2 2+-(Si-SBC) are mainly attributed to stronger electrostatic interactions. The results revealed that the Si-SBC and M/SiO2-Si-SBC could be used as efficient adsorbents for the effective elimination of U(vi) and Pb(ii) from contaminated wastewater. High sorption capacity and reusability indicated the practical applications of the synthesized materials in environmental pollution cleanup.

UR - https://www.scopus.com/pages/publications/85051988453

U2 - 10.1039/c8dt01213j

DO - 10.1039/c8dt01213j

M3 - Article

C2 - 29969122

AN - SCOPUS:85051988453

SN - 1477-9226

VL - 47

SP - 11327

EP - 11336

JO - Dalton Transactions

JF - Dalton Transactions

IS - 33

ER -

A novel magnetite nanorod-decorated Si-Schiff base complex for efficient immobilization of U(vi) and Pb(ii) from water solutions

Abstract

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