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Srinivasan B, Kolanthai E, Eluppai Asthagiri Kumaraswamy N, Jayapalan RR, Vavilapalli DS, Catalani LH, Ningombam GS, Khundrakpam NS, Singh NR, Kalkura SN. Thermally Modified Iron-Inserted Calcium Phosphate for Magnetic Hyperthermia in an Acceptable Alternating Magnetic Field. J Phys Chem B 2019; 123:5506-5513. [PMID: 31244102 DOI: 10.1021/acs.jpcb.9b03015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Magnetic hyperthermia treatment using calcium phosphate nanoparticles is an evolutionary choice because of its excellent biocompatibility. In the present work, Fe3+ is incorporated into HAp nanoparticles by thermal treatment at various temperatures. Induction heating was examined within the threshold H f value of 4.58 × 106 kA m-1 s-1 (H is the strength of alternating magnetic field and f is the operating frequency) and sample concentration of 10 mg/mL. The temperature-dependent structural modifications are well correlated with the morphological, surface charge, and magnetic properties. Surface charge changes from +10 mV to -11 mV upon sintering because of the diffusion of iron in the HAp lattice. The saturation magnetization has been achieved by sintering the nanoparticles at 400 and 600 °C, which has led to the specific absorption rate of 12.2 and 37.2 W/g, respectively. Achievement of the hyperthermia temperature (42 °C) within 4 min is significant when compared with the existing magnetic calcium phosphate nanoparticles. The systematic investigation reveals that the HAp nanoparticles partially stabilized with FeOOH and biocompatible α-Fe2O3 exhibit excellent induction heating. In vitro tests confirmed the samples are highly hemocompatible. The importance of the present work lies in HAp nanoparticles exhibiting induction heating without compromising the factors such as H f value, low sample concentration, and reduced duration of applied field.
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Affiliation(s)
- Baskar Srinivasan
- Crystal Growth Centre , Anna University , Chennai , Tamil Nadu 600 025 , India
| | - Elayaraja Kolanthai
- Departamento de Química Fundamental, Instituto de Química , University of São Paulo , Av. Prof. Lineu Prestes, 784 , São Paulo 05508-000 , Brazil
| | | | - Ramana Ramya Jayapalan
- National Centre for Nanosciences and Nanotechnology , University of Madras , Chennai , Tamil Nadu 600 025 , India
| | | | - Luiz Henrique Catalani
- Departamento de Química Fundamental, Instituto de Química , University of São Paulo , Av. Prof. Lineu Prestes, 784 , São Paulo 05508-000 , Brazil
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Wen J, Tian Y, Mei Z, Wu W, Tian Y. Synthesis of polypyrrole nanoparticles and their applications in electrically conductive adhesives for improving conductivity. RSC Adv 2017. [DOI: 10.1039/c7ra09725e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An innovative application of doping conjugated-polypyrrole nanoparticles (PPy NPs) into electrical conductive adhesives (ECAs) to prepare low electrical resistivity interconnecting materials.
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Affiliation(s)
- Jiayue Wen
- State Key Lab of Advanced Welding and Joining
- Harbin Institute of Technology
- Harbin
- China
| | - Yanhong Tian
- State Key Lab of Advanced Welding and Joining
- Harbin Institute of Technology
- Harbin
- China
| | - Zhipeng Mei
- Department of Materials Science and Engineering
- Southern University of Science and Technology
- Shenzhen
- China
| | - Weizhen Wu
- Department of Materials Science and Engineering
- Southern University of Science and Technology
- Shenzhen
- China
| | - Yanqing Tian
- Department of Materials Science and Engineering
- Southern University of Science and Technology
- Shenzhen
- China
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