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Effect of doping of iron on structural, optical and magnetic properties of CeO2 nanoparticles. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Ramprasath R, Manikandan V, Aldawood S, Sudha S, Cholan S, Kannadasan N, Sampath S, Gokul B. Polyol-assisted hydrothermal synthesis of Mn-doped α - Fe 2O 3(MFO) nanostructures: Spin disorder-induced magnetism and photocatalytic properties. ENVIRONMENTAL RESEARCH 2022; 214:113866. [PMID: 35952748 DOI: 10.1016/j.envres.2022.113866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/10/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Hierarchical nanostructures play an important role in environmental clean-up and sustainability applications. The magnetic and photocatalytic characteristics of flower-like Mn-doped α-Fe2O3 nanostructures were prepared by using a polyol-assisted hydrothermal method. Crystallite sizes are in the range of 35-42 nm, and the existence of 3D hierarchical nanostructures was observed in FESEM pictures. The optical band gap energy varies between 2.08 and 2.16 eV, while XPS examination exposes the ions' charge states and validates Mn3+ inclusion in the Fe3+ lattice. At room temperature, the addition of Mn to α-Fe2O3 results in a spin disorder ferromagnetism and coercivity of about 600 Oe was achieved. Methylene blue (MB) dye solution degraded by 92% when 2.5% Mn doped with α-Fe2O3 under visible conditions for 120 min irradiation time.
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Affiliation(s)
- R Ramprasath
- Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India; Department of Physics, P.D.R.T. Padmavathi Arts and Science College (Women), Dharmapuri, 636902, Tamil Nadu, India
| | - Velu Manikandan
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea
| | - S Aldawood
- Department of Physics and Astronomy, College of Science, P.O. Box 2455, King Saud University, Riyadh, 11451, Saudi Arabia
| | - S Sudha
- Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India; Department of Physics, P.D.R.T. Padmavathi Arts and Science College (Women), Dharmapuri, 636902, Tamil Nadu, India
| | - S Cholan
- Department of Physics, Gonzaga College of Arts and Science for Women, Elathagiri, Krishnagiri, 635108, Tamil Nadu, India.
| | - N Kannadasan
- Department of Physics, Sri Sarada Mahavidhyalayam Arts and Science College for Women, Ulunthoorpetai, Vilupuram, 606107, Tamil Nadu, India
| | - Sridhar Sampath
- Department of Physics, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai, 600062, Tamil Nadu, India
| | - B Gokul
- Department of Physics, Kongunadu Arts and Science College (Autonomous), Coimbatore, 641 029, Tamil Nadu, India
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Nguyen XS, Zhang G, Yang X. Mesocrystalline Zn-Doped Fe 3O 4 Hollow Submicrospheres: Formation Mechanism and Enhanced Photo-Fenton Catalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8900-8909. [PMID: 28233986 DOI: 10.1021/acsami.6b16839] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Uniform and magnetic recyclable mesocrystalline Zn-doped Fe3O4 hollow submicrospheres (HSMSs) were successfully synthesized via a simple one-pot solvothermal route and were used for efficient heterogeneous photo-Fenton catalyst. XRD, XPS, Raman spectroscopy, Mössbauer spectroscopy, SEM, HRTEM, and EDX analyses revealed that the shell of HSMSs is highly porous and assembled by oriented attachment of magnetite nanocrystal building blocks with Zn-rich surfaces. Furthermore, a possible formation mechanism of mesocrystalline hollow materials was proposed. First, Fe3O4 mesocrystals were assembled by oriented nanocrystals, and a Zn-rich amorphous shell grew on the surfaces. Then, Zn gradually diffused into Fe3O4 crystals to form Zn-doped Fe3O4 due to the Kirkendall effect with increasing the reaction time. Meanwhile, the inner nanocrystals would be dissolved, and outer particles would grow larger owing to the Ostwald ripening process, leading to the formation of a hollow structure with porous shell. The Zn-doped Fe3O4 HSMSs exhibited high and stable photo-Fenton activity for degradation of rhodamine B (RhB) and cephalexin under visible-light irradiation in the presence of H2O2, which results from their hollow mesocrystal structure and Zn doping. It could be easily separated and reused by an external magnetic field. The results suggested that the as-obtained magnetite hollow mesocrystals could be a promising catalyst in the photo-Fenton process.
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Affiliation(s)
- Xuan Sang Nguyen
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology , 122 Luoshi Road, Wuhan 430070, China
- Environmental Engineering Institute, Viet Nam Maritime University , Haiphong, Vietnam
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology , 122 Luoshi Road, Wuhan 430070, China
| | - Xianfeng Yang
- Analytical and Testing Centre, South China University of Technology , Guangzhou 510640, China
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Jampaiah D, Srinivasa Reddy T, Kandjani AE, Selvakannan PR, Sabri YM, Coyle VE, Shukla R, Bhargava SK. Fe-doped CeO2 nanorods for enhanced peroxidase-like activity and their application towards glucose detection. J Mater Chem B 2016; 4:3874-3885. [DOI: 10.1039/c6tb00422a] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Surface defects of Fe-doped CeO2 nanorods were found to be active sites for increasing peroxidase mimetic activity.
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Affiliation(s)
- Deshetti Jampaiah
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - T. Srinivasa Reddy
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - Ahmad Esmaielzadeh Kandjani
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - P. R. Selvakannan
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - Ylias M. Sabri
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - Victoria E. Coyle
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - Ravi Shukla
- Nanobiotechnology Research Laboratory
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
| | - Suresh K. Bhargava
- Centre for Advanced Materials & Industrial Chemistry (CAMIC)
- School of Applied Sciences
- RMIT University
- Melbourne-3001
- Australia
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Wang F, Zhang S, Bai D, Zhang F, Xu S. Graphene-supported binary active Mn0.25Co0.75O solid solution derived from a CoMn-layered double hydroxide precursor for highly improved lithium storage. RSC Adv 2016. [DOI: 10.1039/c6ra01500j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Graphene-supported binary active solid solution (Mn0.25Co0.75O) is derived from CoMn-layered double hydroxide/graphene oxide precursor. Electrochemical test shows the highly improved electrochemical performances of the composite.
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Affiliation(s)
- Fen Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Shilin Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Daxun Bai
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Fazhi Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Sailong Xu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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Liu R, Zhao S, Zhang M, Feng F, Shen Q. High interfacial lithium storage capability of hollow porous Mn2O3 nanostructures obtained from carbonate precursors. Chem Commun (Camb) 2015; 51:5728-31. [DOI: 10.1039/c5cc00402k] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous Mn2O3 boxes present an upward trend of reversible capacity assigned to the gradually emerging contribution of interfacial storage.
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Affiliation(s)
- Rui Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry & Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Shiqiang Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry & Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Miaomiao Zhang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry & Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Fan Feng
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry & Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Qiang Shen
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry & Chemical Engineering
- Shandong University
- Jinan 250100
- China
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