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Jeya Sri Lakshmi S, Joel C, Biju Bennie R, Nirmal Paul Raj A, Kumar YA, Khan MS. Synergistic adsorption and photocatalytic degradation of tetracycline using a Z-scheme kaolin/g-C 3N 4/MoO 3 nanocomposite: A sustainable approach for water treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121086. [PMID: 38733841 DOI: 10.1016/j.jenvman.2024.121086] [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: 01/25/2024] [Revised: 04/12/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024]
Abstract
This research focuses on the synthesis and application of a novel kaolin-supported g-C3N4/MoO3 nanocomposite for the degradation of tetracycline, an important antibiotic contaminant in water systems. The nanocomposite was prepared through a facile and environmentally friendly approach, leveraging the adsorption and photocatalytic properties of kaolin, g-C3N4 and MoO3 nanoparticles, respectively. Comprehensive characterization of the nanocomposite was conducted using techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and optical spectra. The surface parameters were studied using N2 adsorption-desorption isotherm. The elemental composition was studied using X-ray photoelectron spectroscopy. The efficiency of the developed nanocomposite in tetracycline degradation was evaluated and the results revealed an efficient tetracycline degradation exhibiting the synergistic effects of adsorption and photocatalytic degradation in the removal process. The tetracycline degradation was achieved in 60 min. Kinetic studies and thermodynamic analyses provided insights into the degradation mechanism, suggesting potential applications for the nanocomposite in wastewater treatment. Additionally, the recyclability and stability of the nanocomposite were investigated, demonstrating its potential for sustainable and long-term application in water treatment.
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Affiliation(s)
- S Jeya Sri Lakshmi
- Department of Chemistry, St. John's College (Affiliated to Manonmaniam Sundaranar University), Tirunelveli, 627002, Tamil Nadu, India; Department of Science and Humanities, SCAD College of Engineering and Technology, Cheranmahadevi, Tirunelveli, 627414, Tamil Nadu, India
| | - C Joel
- Department of Chemistry, St. John's College (Affiliated to Manonmaniam Sundaranar University), Tirunelveli, 627002, Tamil Nadu, India.
| | - R Biju Bennie
- Department of Chemistry, St. John's College (Affiliated to Manonmaniam Sundaranar University), Tirunelveli, 627002, Tamil Nadu, India
| | - A Nirmal Paul Raj
- Department of Chemistry, St. John's College (Affiliated to Manonmaniam Sundaranar University), Tirunelveli, 627002, Tamil Nadu, India
| | - Yedluri Anil Kumar
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, Tamil Nadu, India
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Halder P, Mondal I, Mukherjee A, Biswas S, Sau S, Mitra S, Paul BK, Mondal D, Chattopadhyay B, Das S. Te 4+ and Er 3+ doped ZrO 2 nanoparticles with enhanced photocatalytic, antibacterial activity and dielectric properties: A next generation of multifunctional material. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:120985. [PMID: 38677226 DOI: 10.1016/j.jenvman.2024.120985] [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: 01/27/2024] [Revised: 04/03/2024] [Accepted: 04/20/2024] [Indexed: 04/29/2024]
Abstract
Amid rising water contamination from industrial sources, tackling toxic dyes and pathogens is critical. Photocatalysis offers a cost-effective and eco-friendly solution to this pressing challenges. Herein, we synthesized Te4+ and Er3+ doped ZrO2 photocatalysts through hydrothermal method and investigated their efficacy in degrading Congo red (CR) and pathogens under visible light. XRD and Raman Spectroscopy confirm monoclinic and tetragonal mixed-phases without any impurities. Doping-induced defects, reduced crystalline diameter, high surface area, modified bandgap (2.95 eV), photoluminescence quenching, coupled with interfacial polarization, contribute to EZO's excellent dielectric response (1.149 × 106), for achieving remarkable photocatalytic activity, verified by photoelectrochemical measurements, LC-MS and phytotoxicity analysis. Under optimal conditions, EZO achieves 99% CR degradation within 100 min (TOC 79.9%), surpassing ZO (77%) and TZO (84%). Catalyst dosages, dye concentrations, and solution pH effect on EZO's photocatalytic performance are systematically assessed. Scavenging experiment emphasized the pivotal role of · OH in CR degradation with 96.4% efficiency after 4 cycles, affirming its remarkable stability. Moreover, EZO demonstrates ROS-mediated antibacterial activity against E. faecalis and E. coli bacteria under visible light, achieving >97% and >94% inhibition rate with an inhibition zone > 3 mm. Hence, the nanoparticle's dual action offers a practical solution for treating contaminated wastewater, ensuring safe irrigation.
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Affiliation(s)
- Piyali Halder
- Department of Physics, Jadavpur University, Kolkata, 700032, India
| | - Indrajit Mondal
- Department of Physics, Jadavpur University, Kolkata, 700032, India
| | | | - Somen Biswas
- Department of Physics, Jadavpur University, Kolkata, 700032, India; Department of Physics, Bangabasi College, Kolkata, 700009, India
| | - Souvik Sau
- Department of Physics, Jadavpur University, Kolkata, 700032, India; Department of Physics, Bangabasi College, Kolkata, 700009, India
| | - Sucheta Mitra
- Department of Physics, Jadavpur University, Kolkata, 700032, India
| | | | - Dheeraj Mondal
- Department of Physics, Nabagram Hiralal Paul College, Hooghly, 712246, India
| | | | - Sukhen Das
- Department of Physics, Jadavpur University, Kolkata, 700032, India.
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Sinha A, Sahu SK, Biswas S, Ghorai TK. Synthesis of CeO 2/ZrO 2/ZnO nano alloy oxide and investigation of photocatalysis of naphthol orange under sunlight. RSC Adv 2023; 13:22029-22042. [PMID: 37483663 PMCID: PMC10359764 DOI: 10.1039/d3ra03579d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 07/08/2023] [Indexed: 07/25/2023] Open
Abstract
Novel metal-like cerium- and zirconium-doped ZnO photocatalysts were prepared herein with various proportions of molar ratios via a cost-effective co-precipitation method. The effects of novel metal doping on the photocatalytic activity of ZnO were studied. Various techniques were used to investigate the structural, morphological, and elemental composition, particle size, optical properties, and catalytic activity of the synthesized photocatalysts. It was found that the crystallite size and particle size of the nano alloy oxides were 15.12 ± 1 and 5 ± 1 nm, respectively, and the surface morphology of the nanoparticles indicated a satisfactory surface area. Among all synthesized nanocomposites, CexZrxZnxO5 (x = 1) [CZ1Z2-A] exhibited satisfactory photo-oxidation activity against naphthol orange (NO) under sunlight with a rate constant of 57.5 × 10-3 min-1. The effects of pH, inorganic salts, dye concentrations, and catalytic dosage on NO degradation were studied. A probable mechanistic pathway for the degradation of NO in the presence of CZ1Z2-A was proposed, and studies of sacrificial agents indicated that superoxide radical anion (O2˙-) was the main accountable active species in NO degradation. In addition, CZ1Z2-A exhibited excellent recyclability potential, and XRD studies revealed that there was no change in the crystal structure before or after degradation, which indicated its high stability. The intriguing finding was that Ce- and Zr-doped ZnO did not exhibit satisfactory catalytic performance in the photo-oxidation of NO. However, the composite formula of CexZrxZnxO5 (x = 1) with a 1 : 1 : 1 ratio of metal ions offered excellent catalytic activity.
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Affiliation(s)
- Anik Sinha
- Department of Chemistry, West Bengal State University Barasat Kolkata 700126 West Bengal India
| | - Sanjay Kumar Sahu
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University Amarkantak 484887 Madhya Pradesh India +9107629269712 +919432512461
| | - Suman Biswas
- Department of Chemistry, West Bengal State University Barasat Kolkata 700126 West Bengal India
| | - Tanmay Kumar Ghorai
- Nanomaterials and Crystal Design Laboratory, Department of Chemistry, Indira Gandhi National Tribal University Amarkantak 484887 Madhya Pradesh India +9107629269712 +919432512461
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Habibi Zare M, Mehrabani-Zeinabad A. Yolk@Wrinkled-double shell smart nanoreactors: new platforms for mineralization of pharmaceutical wastewater. Front Chem 2023; 11:1211503. [PMID: 37347043 PMCID: PMC10281210 DOI: 10.3389/fchem.2023.1211503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
Nanomaterials with "yolk and shell" "structure" can be considered as "nanoreactors" that have significant potential for application in catalysis. Especially in terms of electrochemical energy storage and conversion, the nanoelectrode has a large specific surface area with a unique yolk@shell structure, which can reduce the volume change of the electrode during the charging and discharging process and fast ion/electron transfer channels. The adsorption of products and the improvement of conversion reaction efficiency can greatly improve the stability, speed and cycle performance of the electrode, and it is a kind of ideal electrode material. In this research, heterojunction nanoreactors (FZT Y@WDS) Fe3O4@ZrO2-X@TiO2-X were firstly synthesized based on the solvothermal combined hard-template process, partial etching and calcination. The response surface method was used to determine the performance of the FZT Y@WDS heterojunction nanoreactors and the effects of four process factors: naproxen concentration (NAP), solution pH, the amount of charged photocatalyst, and the irradiation time for photocatalytic degradation of NAP under visible light irradiation. To maximize the photocatalytic activity, the parameters of the loaded catalyst, the pH of the reaction medium, the initial concentration of NAP, and the irradiation time were set to 0.5 g/L, 3, 10 mg/L, and 60 min, respectively, resulting in complete removal of NAP and the optimum amount was calculated to be 0.5 g/L, 5.246, 14.092 mg/L, and 57.362 min, respectively. Considering the promising photocatalytic activity of FZT Y@WDS under visible light and the separation performance of the nanocomposite, we proposed this photocatalyst as an alternative solution for the treatment of pharmaceutical wastewater.
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Affiliation(s)
- Masoud Habibi Zare
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
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Niu L, Xin J, Liu J, Liu Y, Wu X, Zhang F, Li X, Shao C, Li X, Liu Y. Highly dispersed g-C 3N 4 on well-designed three-dimensional porous nanostructured ZrO 2 for high-performance photocatalytic degradation and H 2 production. J Colloid Interface Sci 2023; 638:324-338. [PMID: 36746051 DOI: 10.1016/j.jcis.2023.01.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/22/2023] [Accepted: 01/24/2023] [Indexed: 01/29/2023]
Abstract
A novel polymer-assisted freeze-drying method was adopted for preparing three-dimensional porous nanostructured ZrO2 (3DPZ) with macro self-supporting properties. Then, g-C3N4 was in-situ grown uniformly on the 3DPZ through a gas-solid reaction, forming 3D nanoporous ZrO2/g-C3N4 heterojunctions (3DP/ZC) with different g-C3N4 loadings that retained self-supporting characteristics. The kapp value of Rhodamine B (RhB) degradation and H2 evolution rate of the 3DP/ZC-2 under visible light reached 0.035 min-1 and 1013.1 μmol h-1 g-1, which were 19.6 and 6.6 times higher than pure g-C3N4, respectively. The ZrO2 nanoparticles (ZNps) prepared via freeze-drying, but without polymer precursor, were used as support to form ZrO2/g-C3N4 nanoparticles (ZCNps-2) for comparison study. The RhB degradation rate and H2 evolution rate of the 3DP/ZC-2 under visible light were about 3.7 and 5.3 times higher than ZCNps-2. Their enhanced photocatalytic activity could be attributed to their unique 3D heterointerface with matched energy bands for rapid charge separation and transfer and a hierarchical porous structure for mass transfer and surface reaction processes. The scavenger trapping and ESR measurements confirmed that the primary reactive radicals for degradation were superoxide radical ions (⋅O2-), hydroxyl radicals (⋅OH), and photogenerated holes (h+). The pH-dependent photocatalytic degradation activity originated from the H+-related ⋅OH conversion reaction. Besides, the macro self-supporting nature could provide excellent separability and recyclability, and self-supporting membranes were also constructed and demonstrated as stable and recyclable photocatalysts. This work provides a new routine for designing 3D-heterojunctions as new kinds of functional materials for applications in environmental remediation and green energy production.
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Affiliation(s)
- Luyao Niu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Jiayu Xin
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Jie Liu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Yu Liu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Xi Wu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Fang Zhang
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Xiaowei Li
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
| | - Changlu Shao
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China.
| | - Xinghua Li
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China.
| | - Yichun Liu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China
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Alebachew N, Murthy HCA, Gonfa BA, von Eschwege KG, Langner EHG, Coetsee E, Demissie TB. Nanocomposites with ZrO 2@S-Doped g-C 3N 4 as an Enhanced Binder-Free Sensor: Synthesis and Characterization. ACS OMEGA 2023; 8:13775-13790. [PMID: 37091396 PMCID: PMC10116625 DOI: 10.1021/acsomega.2c08174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 03/22/2023] [Indexed: 05/03/2023]
Abstract
This study describes new electrocatalyst materials that can detect and reduce environmental pollutants. The synthesis and characterization of semiconductor nanocomposites (NCs) made from active ZrO2@S-doped g-C3N4 is presented. Electrochemical impedance spectroscopy (EIS) and Mott-Schottky (M-S) measurements were used to examine electron transfer characteristics of the synthesized samples. Using X-ray diffraction (XRD) and high-resolution scanning electron microscopy (HR-SEM) techniques, inclusion of monoclinic ZrO2 on flower-shaped S-doped-g-C3N4 was visualized. High-resolution X-ray photoelectron spectroscopy (XPS) revealed successful doping of ZrO2 into the lattice of S-doped g-C3N4. The electron transport mechanism between the electrolyte and the fluorine tin-oxide electrode (FTOE) was enhanced by the synergistic interaction between ZrO2 and S-doped g-C3N4 as co-modifiers. Development of a platform with improved conductivity based on an FTOE modified with ZrO2@S-doped g-C3N4 NCs resulted in an ideal platform for the detection of 4-nitrophenol (4-NP) in water. The electrocatalytic activity of the modified electrode was evaluated through determination of 4-NP by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) under optimum conditions (pH 5). ZrO2@S-doped g-C3N4 (20%)/FTOE exhibited good electrocatalytic activity with a linear range from 10 to 100 μM and a low limit of detection (LOD) of 6.65 μM. Typical p-type semiconductor ZrO2@S-doped g-C3N4 NCs significantly impact the superior detection of 4-NP due to its size, shape, optical properties, specific surface area and effective separation of electron-hole pairs. We conclude that the superior electrochemical sensor behavior of the ZrO2@S-doped g-C3N4 (20%)/FTOE surfaces results from the synergistic interaction between S-doped g-C3N4 and ZrO2 surfaces that produce an active NC interface.
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Affiliation(s)
- Nigussie Alebachew
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 251, Ethiopia
| | - H. C. Ananda Murthy
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 251, Ethiopia
- Department
of Prosthodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical and Technical Science
(SIMATS), Saveetha University, Chennai 600077, Tamil
Nadu, India
| | - Bedasa Abdisa Gonfa
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama 251, Ethiopia
| | - Karel G. von Eschwege
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Ernst H. G. Langner
- Department
of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Elizabeth Coetsee
- Department
of Physics, University of the Free State, P.O. Box 339, Bloemfontein ZA9310, South Africa
| | - Taye B. Demissie
- Department
of Chemistry, University of Botswana, P.bag UB 00704 Gaborone, Botswana
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ZrO2/C3N4 Nanocomposites: Green Solid-State Grinding Synthesis, Characterization, and Photocatalytic Degradation of MB Dye. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02502-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Harmonizing the photocatalytic activity of g-C3N4 nanosheets by ZrO2 stuffing: from fabrication to experimental study for the wastewater treatment. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108411] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Construction of g-C3N4/TiO2 nanotube arrays Z-scheme heterojunction to improve visible light catalytic activity. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125193] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Dong G, Wen Y, Fan H, Wang C, Cheng Z, Zhang M, Ma J, Zhang S. Graphitic carbon nitride with thermally-induced nitrogen defects: an efficient process to enhance photocatalytic H2 production performance. RSC Adv 2020; 10:18632-18638. [PMID: 35518330 PMCID: PMC9053999 DOI: 10.1039/d0ra01425g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/09/2020] [Indexed: 11/21/2022] Open
Abstract
An efficient thermal-treatment method was developed for the preparation of defect modified g-C3N4 with excellent photocatalytic H2 production performance.
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Affiliation(s)
- Guangzhi Dong
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Yun Wen
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Huiqing Fan
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Chao Wang
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials
- Australia Institute of Innovative Materials
- University of Wollongong
- Wollongong
- Australia
| | - Mingchang Zhang
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Jiangwei Ma
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Shujun Zhang
- Institute for Superconducting and Electronic Materials
- Australia Institute of Innovative Materials
- University of Wollongong
- Wollongong
- Australia
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