Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure

Jimoh Oladejo Tijani; Francis Idowu; Ambali Saka Abdulkareem; Mustapha Saheed; Elijah Yanda Shaba; Seungdae Oh; Simon Olonkwoh Salihu; Alexendra Ikechukwu Ajai; Oluwatosin Kudirat Shittu; Abdulsalami Sanni Kovo; Awe Omoniyi Babajide; Kehinde Shola Obayomi

doi:10.1016/j.matchemphys.2026.132537

Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure

Jimoh Oladejo Tijani
, Francis Idowu
, Ambali Saka Abdulkareem
, Mustapha Saheed
, Elijah Yanda Shaba
, Seungdae Oh
, Simon Olonkwoh Salihu
, Alexendra Ikechukwu Ajai
, Oluwatosin Kudirat Shittu
, Abdulsalami Sanni Kovo
, Awe Omoniyi Babajide
, Kehinde Shola Obayomi

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

Abstract

Herein, we designed ferromanganese incorporated graphene oxide (Fe–Mn/GO) nanocomposites via wet impregnation at varying mixing ratios (1:1, 1:2, and 2:1) for the removal of organic compounds and ammonia from poultry manure. The physicochemical characterization confirmed the successful integration of Fe–Mn nanoparticles onto GO nanosheets, resulting in an increased surface area (84.49 m²/g), enhanced crystallinity, and improved interfacial interactions in the Fe–Mn/GO nanocomposites. FTIR analysis revealed the chemical bonding of Fe with GO. The Fe–Mn/GO (1:2) nanocomposite exhibited the highest removal efficiencies within 60 min, achieving 76.24% for dimethylamine, 76.12% for 2-butanone, 66.91% for cyclohexane, 62.34% for toluene, 58.78% for butanoic acid, and 34.45% for indole. Under optimized conditions of 45 min contact time, 5 g adsorbent dosage, and pH 7.5, maximum ammonia removal was achieved. The experimental data were better explained by the pseudo-second order based on higher R² (correlation coefficient) and lower X² (chi-squared) values, which provided interaction based on porosity, surface chemistry, and interficial interaction between the nanaocomposites and pollutants. DFT analysis supported the experimental findings by revealing enhanced charge transfer interactions, reduced energy gaps (ΔE), and favorable adsorbate–surface interactions, providing molecular-level insight into the adsorption mechanisms of the material. The Fe–Mn/GO (1:2) composite outperformed its individual components, demonstrating its effectiveness as an adsorbent for wastewater treatment. This enhanced performance is attributed to synergistic effects, including improved surface area, better dispersion of active sites, and enhanced charge transfer interactions. This study offers strong evidence for the practical application of Fe–Mn/GO composites in environmental remediation, with promising scalability for agricultural waste management systems.

Original language	English
Article number	132537
Journal	Materials Chemistry and Physics
Volume	359
DOIs	https://doi.org/10.1016/j.matchemphys.2026.132537
Publication status	Published - 1 Jul 2026

Bibliographical note

Publisher Copyright:
© 2026 The Authors.

Keywords

Bimetallic nanocomposites
Density functional theory (DFT)
Pollutants
Response surface methodology (RSM)
Wet impregnation

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10.1016/j.matchemphys.2026.132537

Cite this

Tijani, J. O., Idowu, F., Abdulkareem, A. S., Saheed, M., Shaba, E. Y., Oh, S., Salihu, S. O., Ajai, A. I., Shittu, O. K., Kovo, A. S., Babajide, A. O., & Obayomi, K. S. (2026). Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure. Materials Chemistry and Physics, 359, Article 132537. https://doi.org/10.1016/j.matchemphys.2026.132537

@article{4a65c14ce1754c8abd0b3cd05aee19a7,

title = "Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure",

abstract = "Herein, we designed ferromanganese incorporated graphene oxide (Fe–Mn/GO) nanocomposites via wet impregnation at varying mixing ratios (1:1, 1:2, and 2:1) for the removal of organic compounds and ammonia from poultry manure. The physicochemical characterization confirmed the successful integration of Fe–Mn nanoparticles onto GO nanosheets, resulting in an increased surface area (84.49 m2/g), enhanced crystallinity, and improved interfacial interactions in the Fe–Mn/GO nanocomposites. FTIR analysis revealed the chemical bonding of Fe with GO. The Fe–Mn/GO (1:2) nanocomposite exhibited the highest removal efficiencies within 60 min, achieving 76.24\% for dimethylamine, 76.12\% for 2-butanone, 66.91\% for cyclohexane, 62.34\% for toluene, 58.78\% for butanoic acid, and 34.45\% for indole. Under optimized conditions of 45 min contact time, 5 g adsorbent dosage, and pH 7.5, maximum ammonia removal was achieved. The experimental data were better explained by the pseudo-second order based on higher R2 (correlation coefficient) and lower X2 (chi-squared) values, which provided interaction based on porosity, surface chemistry, and interficial interaction between the nanaocomposites and pollutants. DFT analysis supported the experimental findings by revealing enhanced charge transfer interactions, reduced energy gaps (ΔE), and favorable adsorbate–surface interactions, providing molecular-level insight into the adsorption mechanisms of the material. The Fe–Mn/GO (1:2) composite outperformed its individual components, demonstrating its effectiveness as an adsorbent for wastewater treatment. This enhanced performance is attributed to synergistic effects, including improved surface area, better dispersion of active sites, and enhanced charge transfer interactions. This study offers strong evidence for the practical application of Fe–Mn/GO composites in environmental remediation, with promising scalability for agricultural waste management systems.",

keywords = "Bimetallic nanocomposites, Density functional theory (DFT), Pollutants, Response surface methodology (RSM), Wet impregnation",

author = "Tijani, \{Jimoh Oladejo\} and Francis Idowu and Abdulkareem, \{Ambali Saka\} and Mustapha Saheed and Shaba, \{Elijah Yanda\} and Seungdae Oh and Salihu, \{Simon Olonkwoh\} and Ajai, \{Alexendra Ikechukwu\} and Shittu, \{Oluwatosin Kudirat\} and Kovo, \{Abdulsalami Sanni\} and Babajide, \{Awe Omoniyi\} and Obayomi, \{Kehinde Shola\}",

note = "Publisher Copyright: {\textcopyright} 2026 The Authors.",

year = "2026",

month = jul,

day = "1",

doi = "10.1016/j.matchemphys.2026.132537",

language = "English",

volume = "359",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier BV",

}

Tijani, JO, Idowu, F, Abdulkareem, AS, Saheed, M, Shaba, EY, Oh, S, Salihu, SO, Ajai, AI, Shittu, OK, Kovo, AS, Babajide, AO & Obayomi, KS 2026, 'Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure', Materials Chemistry and Physics, vol. 359, 132537. https://doi.org/10.1016/j.matchemphys.2026.132537

TY - JOUR

T1 - Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure

AU - Tijani, Jimoh Oladejo

AU - Idowu, Francis

AU - Abdulkareem, Ambali Saka

AU - Saheed, Mustapha

AU - Shaba, Elijah Yanda

AU - Oh, Seungdae

AU - Salihu, Simon Olonkwoh

AU - Ajai, Alexendra Ikechukwu

AU - Shittu, Oluwatosin Kudirat

AU - Kovo, Abdulsalami Sanni

AU - Babajide, Awe Omoniyi

AU - Obayomi, Kehinde Shola

PY - 2026/7/1

Y1 - 2026/7/1

N2 - Herein, we designed ferromanganese incorporated graphene oxide (Fe–Mn/GO) nanocomposites via wet impregnation at varying mixing ratios (1:1, 1:2, and 2:1) for the removal of organic compounds and ammonia from poultry manure. The physicochemical characterization confirmed the successful integration of Fe–Mn nanoparticles onto GO nanosheets, resulting in an increased surface area (84.49 m2/g), enhanced crystallinity, and improved interfacial interactions in the Fe–Mn/GO nanocomposites. FTIR analysis revealed the chemical bonding of Fe with GO. The Fe–Mn/GO (1:2) nanocomposite exhibited the highest removal efficiencies within 60 min, achieving 76.24% for dimethylamine, 76.12% for 2-butanone, 66.91% for cyclohexane, 62.34% for toluene, 58.78% for butanoic acid, and 34.45% for indole. Under optimized conditions of 45 min contact time, 5 g adsorbent dosage, and pH 7.5, maximum ammonia removal was achieved. The experimental data were better explained by the pseudo-second order based on higher R2 (correlation coefficient) and lower X2 (chi-squared) values, which provided interaction based on porosity, surface chemistry, and interficial interaction between the nanaocomposites and pollutants. DFT analysis supported the experimental findings by revealing enhanced charge transfer interactions, reduced energy gaps (ΔE), and favorable adsorbate–surface interactions, providing molecular-level insight into the adsorption mechanisms of the material. The Fe–Mn/GO (1:2) composite outperformed its individual components, demonstrating its effectiveness as an adsorbent for wastewater treatment. This enhanced performance is attributed to synergistic effects, including improved surface area, better dispersion of active sites, and enhanced charge transfer interactions. This study offers strong evidence for the practical application of Fe–Mn/GO composites in environmental remediation, with promising scalability for agricultural waste management systems.

AB - Herein, we designed ferromanganese incorporated graphene oxide (Fe–Mn/GO) nanocomposites via wet impregnation at varying mixing ratios (1:1, 1:2, and 2:1) for the removal of organic compounds and ammonia from poultry manure. The physicochemical characterization confirmed the successful integration of Fe–Mn nanoparticles onto GO nanosheets, resulting in an increased surface area (84.49 m2/g), enhanced crystallinity, and improved interfacial interactions in the Fe–Mn/GO nanocomposites. FTIR analysis revealed the chemical bonding of Fe with GO. The Fe–Mn/GO (1:2) nanocomposite exhibited the highest removal efficiencies within 60 min, achieving 76.24% for dimethylamine, 76.12% for 2-butanone, 66.91% for cyclohexane, 62.34% for toluene, 58.78% for butanoic acid, and 34.45% for indole. Under optimized conditions of 45 min contact time, 5 g adsorbent dosage, and pH 7.5, maximum ammonia removal was achieved. The experimental data were better explained by the pseudo-second order based on higher R2 (correlation coefficient) and lower X2 (chi-squared) values, which provided interaction based on porosity, surface chemistry, and interficial interaction between the nanaocomposites and pollutants. DFT analysis supported the experimental findings by revealing enhanced charge transfer interactions, reduced energy gaps (ΔE), and favorable adsorbate–surface interactions, providing molecular-level insight into the adsorption mechanisms of the material. The Fe–Mn/GO (1:2) composite outperformed its individual components, demonstrating its effectiveness as an adsorbent for wastewater treatment. This enhanced performance is attributed to synergistic effects, including improved surface area, better dispersion of active sites, and enhanced charge transfer interactions. This study offers strong evidence for the practical application of Fe–Mn/GO composites in environmental remediation, with promising scalability for agricultural waste management systems.

KW - Bimetallic nanocomposites

KW - Density functional theory (DFT)

KW - Pollutants

KW - Response surface methodology (RSM)

KW - Wet impregnation

UR - https://www.scopus.com/pages/publications/105035745054

U2 - 10.1016/j.matchemphys.2026.132537

DO - 10.1016/j.matchemphys.2026.132537

M3 - Article

AN - SCOPUS:105035745054

SN - 0254-0584

VL - 359

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

M1 - 132537

ER -

Development of ferromanganese-incorporated graphene oxide for adsorption of ammonia and organic pollutants from poultry manure

Abstract

Bibliographical note

Keywords

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