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Mohammadi A, Tamang S, Rethinasabapathy M, Ranjith KS, Safarkhani M, Kwak CH, Roh C, Huh YS, Han YK. Eco-friendly synthesis of rod-like hydroxyapatite on spherical carbon: A dual-function composite for selective cobalt removal and enhanced oxygen evolution reaction. JOURNAL OF HAZARDOUS MATERIALS 2025; 487:137164. [PMID: 39813934 DOI: 10.1016/j.jhazmat.2025.137164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2024] [Revised: 01/05/2025] [Accepted: 01/07/2025] [Indexed: 01/18/2025]
Abstract
The presence of cobalt ions (Co2 +) and radionuclides (60Co) in industrial and radioactive effluents pose serious threats to environmental ecosystems and human health. This paper presents the synthesis of dual-functional hydroxyapatite (HAp)-incorporated spherical carbon (SC) composite (HAp/SC) towards the selective adsorption of cobalt from wastewater and the utilization of the Co2+-adsorbed HAp/SC composite (Co2+- HAp/SC) as an electrocatalyst for the oxygen evolution reaction (OER). Herein, we prepared a series of HAp/SC composites by varying HAp weight percentages of 10 %, 20 %, 30 %, 40 %, and 50 %. Among the prepared composites, 20 wt% HAp/SC exhibited the highest Co2+ adsorption capacity of 111.03 mg g⁻1 which was higher than those of individual HAp and SC. The excellent Co2+ adsorption performance of 20 wt% HAp/SC composite might be due to the synergistic effects of phosphate groups in HAp, which selectively capture Co2+, along with large number of surface -OH and -COOH functional groups of SC through electrostatic, ion-exchange, and surface complexation mechanisms. Batch adsorption experimental data fit well with the Langmuir model (R2 = 0.97) suggesting monolayer adsorption of Co2+ onto the adsorption sites of HAp/SC. Also, the 20 wt% HAp/SC composite exhibited rapid Co2+ adsorption kinetics and effectively describing the pseudo-first-order model (R2 = 0.97) with a rate constant (k1) of 0.14893 min-1. Additionally, the Co2+-HAp/SC composite demonstrates potential as an electrocatalyst for the oxygen evolution reaction (OER), exhibiting an overpotential of 380 mV and a Tafel slope of 39.3 mV dec-1. This dual functionality suggests the HAp/SC composite for the cobalt removal, with the resulting product serving as an electrocatalyst for OER.
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Affiliation(s)
- Ali Mohammadi
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Sujina Tamang
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Muruganantham Rethinasabapathy
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Kugalur Shanmugam Ranjith
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Moein Safarkhani
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Cheol Hwan Kwak
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Changhyun Roh
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea; Nuclear Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
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Vignesh S, Mythili R, Oh TH. Boosted photocatalytic performance of cobalt ferrite anchored g-C 3N 4 nanocomposite toward various emerging environmental hazardous pollutants degradation: insights into stability and Z-scheme mechanism. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:302. [PMID: 38990227 DOI: 10.1007/s10653-024-02085-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 06/17/2024] [Indexed: 07/12/2024]
Abstract
In this study, a highly efficient CoFe2O4-anchored g-C3N4 nanocomposite with Z-scheme photocatalyst was developed by facile calcination and hydrothermal technique. To evaluate the crystalline structure, sample surface morphology, elemental compositions, and charge conductivity of the as-synthesized catalysts by various characterization techniques. The high interfacial contact of CoFe2O4 nanoparticles (NPs) with g-C3N4 nanosheets reduced the optical bandgap from 2.67 to 2.5 eV, which improved the charge carrier separation and transfer. The photo-degradation of methylene blue (MB) and rhodamine B (Rh B) aqueous pollutant suspension under visible-light influence was used to investigate the photocatalytic degradation activity of the efficient CoFe2O4/g-C3N4 composite catalyst. The heterostructured spinel CoFe2O4 anchored g-C3N4 photocatalysts (PCs) with Z-scheme show better photocatalytic degradation performance for both organic dyes. Meanwhile, the efficiency of aqueous MB and Rh B degradation in 120 and 100 min under visible-light could be up to 91.1% and 73.7%, which is greater than pristine g-C3N4 and CoFe2O4 catalysts. The recycling stability test showed no significant changes in the photo-degradation activity after four repeated cycles. Thus, this work provides an efficient tactic for the construction of highly efficient magnetic PCs for the removal of hazardous pollutants in the aquatic environment.
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Affiliation(s)
- Shanmugam Vignesh
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea.
- Department of Applied Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 602105, India.
| | - R Mythili
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 600077, India
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea.
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Kumar U, Sanket K, Mandal R, Kumar De A, Shrivastava A, Behera SK, Sinha I. Silver nanoparticle-decorated NiFe 2O 4/CuWO 4 heterostructure electrocatalyst for oxygen evolution reactions. Phys Chem Chem Phys 2024; 26:14883-14897. [PMID: 38738546 DOI: 10.1039/d4cp00473f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
In this work, Ag nanoparticles decorated with NiFe2O4/CuWO4 heterostructure were synthesized using the step-wise precipitation method. The influence of varying Ag loading on the NiFe2O4/CuWO4 heterostructure and its electrochemical OER performance was extensively studied in 1 M KOH electrolyte. The obtained LSV profile was analyzed to determine the overpotential, Tafel slope, and onset potential. The heterostructure with an optimal Ag loading of 5 wt% required the least overpotential (1.60 V vs. RHE) for generating a current density of 10 mA cm-2 with a lower Tafel slope of 44.5 mV dec-1, indicating its faster OER kinetics. Furthermore, the composite remained stable over a period of 24 hours with a minimum rise in the overpotential after the stability test. The enhanced OER performance of the as-prepared catalyst can be attributed to the presence of multiple metallic elements in the Ag-loaded NiFe2O4/CuWO4 composite, which created a diverse array of oxygen-vacant sites with varying reactivity, enhancing the charge-transfer kinetics; and thus contributing to the overall efficiency of OER. Therefore, optimizing the Ag concentration and engineering a microstructure represents an encouraging strategy for developing cost-effective catalysts for next-generation energy-conversion applications.
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Affiliation(s)
- Uttam Kumar
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
| | - Kumar Sanket
- Department of Ceramic Engineering, National Institute of Technology, Rourkela, Odhisa 769008, India.
| | - Rupesh Mandal
- Department of Ceramic Engineering, National Institute of Technology, Rourkela, Odhisa 769008, India.
| | - Arup Kumar De
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
| | - Anshu Shrivastava
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
| | - Shantanu K Behera
- Department of Ceramic Engineering, National Institute of Technology, Rourkela, Odhisa 769008, India.
| | - Indrajit Sinha
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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Gao C, Yao H, Wang P, Zhu M, Shi XR, Xu S. Carbon-Based Composites for Oxygen Evolution Reaction Electrocatalysts: Design, Fabrication, and Application. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2265. [PMID: 38793344 PMCID: PMC11122737 DOI: 10.3390/ma17102265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024]
Abstract
The four-electron oxidation process of the oxygen evolution reaction (OER) highly influences the performance of many green energy storage and conversion devices due to its sluggish kinetics. The fabrication of cost-effective OER electrocatalysts via a facile and green method is, hence, highly desirable. This review summarizes and discusses the recent progress in creating carbon-based materials for alkaline OER. The contents mainly focus on the design, fabrication, and application of carbon-based materials for alkaline OER, including metal-free carbon materials, carbon-based supported composites, and carbon-based material core-shell hybrids. The work presents references and suggestions for the rational design of highly efficient carbon-based OER materials.
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Affiliation(s)
| | | | | | | | - Xue-Rong Shi
- School of Material Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Shusheng Xu
- School of Material Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
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Chu Y, Wang D, Wang J, Zha S, Wu M, Liu C, Wang W, Mitsuzaki N, Chen Z. Synergistic Interfacial Engineering of Heterostructured Cobalt Phosphide Spheres/Cobalt Hydroxide Nanosheets for Overall Water Splitting. Inorg Chem 2023; 62:18189-18197. [PMID: 37883780 DOI: 10.1021/acs.inorgchem.3c02656] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Recently, transition metal phosphides (TMPs) have been widely explored for the hydrogen evolution reaction (HER) due to their advantaged activity. Nevertheless, the OER performance of TMPs in an alkaline medium is still unsatisfactory. Therefore, interfacial engineering of TMPs to enhance the OER performance is highly desirable. Herein, a Co(OH)2 nanosheet coupled with a CoP sphere supported on nickel foam (NF) is developed by a simple two-step electrodeposition. The large surface area derived from stacked nanosheets and the electronic regulation induced by heterostructure can significantly enhance charge/mass transfer and expose more active sites, thus accelerating the kinetics of the reaction. In addition, the strong electronic interaction between CoP and Co(OH)2 is conducive to the generation of a high valence cobalt center; thus, the electrocatalytic performances toward HER and OER are remarkably improved. Impressively, the optimized CoP/Co(OH)2@NF heterostructure obtains an excellent HER and OER performance with low overpotentials of 76 and 266 mV at 10 mA cm-2, respectively, superior to the commercial Pt/C and RuO2. Moreover, the optimized CoP/Co(OH)2@NF can afford the lowest cell voltage of 1.58 V to achieve 10 mA cm-2 for alkaline overall water splitting and shows outstanding long-term stability.
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Affiliation(s)
- Yuan Chu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Dan Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Jibiao Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Sujuan Zha
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Minxian Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Changhai Liu
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Wenchang Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
- Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, Jiangsu 213032, China
| | | | - Zhidong Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
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Zhao X, He C, Bai Q, Miao X, Cao C, Wu T. Magnetic CoFe 2O 4 and NiFe 2O 4 Induced Self-Assembled Graphene Nanoribbon Framework with Excellent Properties for Li-Ion Battery. Molecules 2023; 28:molecules28104069. [PMID: 37241810 DOI: 10.3390/molecules28104069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
A magnetically induced self-assembled graphene nanoribbons (GNRs) method is reported to synthesize MFe2O4/GNRs (M = Co,Ni). It is found that MFe2O4 compounds not only locate on the surface of GNRs but anchor on the interlayers of GNRs in the diameter of less than 5 nm as well. The in situ growth of MFe2O4 and magnetic aggregation at the joints of GNRs act as crosslinking agents to solder GNRs to build a nest structure. Additionally, combining GNRs with MFe2O4 helps to improve the magnetism of the MFe2O4. As an anode material for Li+ ion batteries, MFe2O4/GNRs can provide high reversible capacity and cyclic stability (1432 mAh g-1 for CoFe2O4/GNRs and 1058 mAh g-1 for NiFe2O4 at 0.1 A g-1 over 80 cycles).
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Affiliation(s)
- Xiyu Zhao
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
- Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475001, China
| | - Chunyang He
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Qiujv Bai
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Xiangwen Miao
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Cheng Cao
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Tianli Wu
- Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475001, China
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Morphology-controlled NiFe2O4 nanostructures: influence of calcination temperature on structural, magnetic and catalytic properties towards OER. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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