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Kim N, Kim Y, Yun JM, Jeong SK, Lee S, Lee BZ, Shim J. Surface Coating of Titanium Dioxide Nanoparticles with a Polymerizable Chelating Agent and Its Physicochemical Property. ACS OMEGA 2023; 8:18743-18750. [PMID: 37273586 PMCID: PMC10233674 DOI: 10.1021/acsomega.3c00734] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 04/28/2023] [Indexed: 06/06/2023]
Abstract
Surface modification of inorganic nanoparticles is critical for the quality and performance of pigments, cosmetics, and composite materials. We covered the titanium dioxide nanoparticles' surface with 2-(acetoacetoxy) ethyl methacrylate, a polymerizable chelating agent. Through the in situ polymerization procedure, this molecule's β-ketoester moiety quickly coordinated with the metal atoms on titanium dioxide nanoparticles, and its methacrylate group formed homogeneous coating layers. This coating layer significantly reduced the photocatalytic activity of titanium dioxide nanoparticles and prevented their aggregation. This nanoparticle dispersion showed low viscosity up to the solid content of 60% (w/w) in the liquid dispersant. As a result, it increased the UV screening performance and dispersion stability. Additionally, this coating layer widened the absorption spectrum of titanium dioxide and could change the color of nanoparticles from pale yellow to brown. It can also be helpful for cosmetic applications.
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Affiliation(s)
- NaRi Kim
- Department
of Chemistry, Dongduk Women’s University, Seoul 02748, Korea
| | - Yerin Kim
- Department
of Chemistry, Dongduk Women’s University, Seoul 02748, Korea
| | - Je-Moon Yun
- Division
of Advanced Materials Engineering, Dong-Eui
University, Busan 47340, Korea
| | | | - Sulhae Lee
- R &
D Team, CHEMLAND, Gunpo 15850, Korea
| | | | - Jongwon Shim
- Department
of Chemistry, Dongduk Women’s University, Seoul 02748, Korea
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2
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Borchert KBL, Gerlach N, Steinbach C, Reis B, Schwarz S, Schwarz D. SiO 2 nanospheres as surfactant and template in aqueous dispersion polymerizations yielding highly nanoporous resin particles. J Colloid Interface Sci 2023; 637:372-388. [PMID: 36724662 DOI: 10.1016/j.jcis.2023.01.071] [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: 09/30/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 01/20/2023]
Abstract
HYPOTHESIS High nitrogen containing resins such as poly(melamine-co-formaldehyde) (PMF) are known for their very good adsorption properties. Until now, using an ecofriendly hard-templating approach with SiO2 nanospheres in water for synthesis, only yielded either highly porous particles with diameters up to 1 µm or non-porous particles with diameters above 1 µm. Small particles cannot be used as fixed bed adsorbents in columns because of the very high pressure occurring. EXPERIMENTS To yield particles with high porosity and larger diameters for the use as fixed bed adsorbent, we investigated the influence of several synthesis parameters on porosity and particle morphology. FINDINGS From all variations, we proposed a mechanism for the complex interplay between the PMF prepolymer and resin species with SiO2 nanoparticles acting both as Pickering-like surfactant and template particle. With this knowledge we were able to produce a suitable column material with high specific surface area up to 260 m2/g. We then proved the application of this material for aqueous dichromate adsorption in batch, yielding a maximum capacity of 138 mg/g with recyclability. In column experiments, the contamination of 5 mg/L dichromate in water was reduced to drinking water safe levels for an influent volume equal to over 160 bed volumes.
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Affiliation(s)
| | - Niklas Gerlach
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Christine Steinbach
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Berthold Reis
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Simona Schwarz
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
| | - Dana Schwarz
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany.
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3
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Harun AM, Noor NFM, Shaari R, Ying LX, Yusoff ME, Alam MK. The toxicology properties of modified hydrothermal nanotitania extraction. Arch Med Sci 2022; 18:1338-1341. [PMID: 36160357 PMCID: PMC9479722 DOI: 10.5114/aoms/127086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 09/01/2020] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The nanoparticle has become a part of world industry. This substance has been proven as potentially beneficial for its usage as a catalyst and semi-conductor due to its high surface area and the effects of the quantum size effect. It exhibits potential characteristics and would be applied in a wider scope of usage compared to bulk particles because the smaller the size of the particles, the more room for the extent of their usage. Nano titanium dioxide application as semi-conductors together with a catalyst is highly attributed to its high photochemical stability and ability to be produced at a low-cost. The consequence of this - exposure of nano titanium dioxide particles to humans - raises concerns regarding health and safety. Therefore, this research action works designed to offer a thorough analysis of toxicology impacts produced by our own synthesis modified hydrothermal in vitro experiments. MATERIAL AND METHODS Our nanotitania extraction with 0.05% silver was tested for its toxicity against L929 mouse cells. The cytotoxicity effect of nanotitania extract was evaluated by MTT assay. Cell viability (% CV) was calculated using a formula. RESULTS There are non-cytotoxicity activity of 0.05% nanotitania at concentrations 1.5, 3.1, 6.3, 12.5, and 25 mg/ml on L929 cell lines except at concentration 50 and 100 mg/ml. The result was related to the optical density reading. CONCLUSIONS There is no cytotoxic effect of nanotitania extraction with 0.05% silver in the growth inhibition test with L929 mouse with the exception of the 100 mg/ml extract.
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Affiliation(s)
- Ahmad Mukifza Harun
- Engineering Faculty, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Sabah, Malaysia
| | - Nor Farid Mohd Noor
- School of Dental Science, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Ramizu Shaari
- School of Dental Science, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Lio Xing Ying
- School of Dental Science, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Mohamad Ezany Yusoff
- School of Dental Science, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Mohammad Khursheed Alam
- Department of Orthodontic, College of Dentistry, Jouf University, Sakaka, Kingdom of Saudi Arabia
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Borchert KBL, Steinbach C, Reis B, Gerlach N, Zimmermann P, Schwarz S, Schwarz D. Mesoporous Poly(melamine- co-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal. Molecules 2021; 26:6615. [PMID: 34771024 PMCID: PMC8588240 DOI: 10.3390/molecules26216615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022] Open
Abstract
Due to the existence-threatening risk to aquatic life and entire ecosystems, the removal of oxyanions such as sulfate and phosphate from anthropogenic wastewaters, such as municipal effluents and acid mine drainage, is inevitable. Furthermore, phosphorus is an indispensable resource for worldwide plant fertilization, which cannot be replaced by any other substance. This raises phosphate to one of the most important mineral resources worldwide. Thus, efficient recovery of phosphate is essential for ecosystems and the economy. To face the harsh acidic conditions, such as for acid mine drainage, an adsorber material with a high chemical resistivity is beneficial. Poly(melamine-co-formaldehyde) (PMF) sustains these conditions whilst its very high amount of nitrogen functionalities (up to 53.7 wt.%) act as efficient adsorption sides. To increase adsorption capacities, PMF was synthesized in the form of mesoporous particles using a hard-templating approach yielding specific surface areas up to 409 m2/g. Different amounts of silica nanospheres were utilized as template and evaluated for the adsorption of sulfate and phosphate ions. The adsorption isotherms were validated by the Langmuir model. Due to their properties, the PMF particles possessed outperforming maximum adsorption capacities of 341 and 251 mg/g for phosphate and sulfate, respectively. Furthermore, selective adsorption of sulfate from mixed solutions of phosphate and sulfate was found for silica/PMF hybrid particles.
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Affiliation(s)
| | | | | | | | | | | | - Dana Schwarz
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany; (K.B.L.B.); (C.S.); (B.R.); (N.G.); (P.Z.); (S.S.)
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Kosmulski M. The pH dependent surface charging and points of zero charge. IX. Update. Adv Colloid Interface Sci 2021; 296:102519. [PMID: 34496320 DOI: 10.1016/j.cis.2021.102519] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 01/23/2023]
Abstract
of the points of zero charge (PZC) and isoelectric points (IEP) of various materials published in the recent literature and of older results overlooked in the previous compilations. The roles of experimental conditions, especially of the temperature, of the nature and concentration of supporting electrolyte, and of the type of apparatus are emphasized. The newest results are compared with the zero points reported in previous reviews. Most recent studies were carried out with materials whose pH dependent surface charging is already well-documented, and the newest results are consistent with the older literature. Isoelectric points of Gd(OH)3, Sm(OH)3, and TeO2 have been reported for the first time in the recent literature.
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Affiliation(s)
- Marek Kosmulski
- Lublin University of Technology, Nadbystrzycka 38, PL-20618 Lublin, Poland.
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Kalampaliki T, Makri SP, Papadaki E, Grigoropoulos A, Zoikis Karathanasis A, Deligkiozi I. Visible-Light Active Sulfur-Doped Titania Nanoparticles Immobilized on a Silica Matrix: Synthesis, Characterization and Photocatalytic Degradation of Pollutants. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2543. [PMID: 34684984 PMCID: PMC8537489 DOI: 10.3390/nano11102543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/15/2021] [Accepted: 09/21/2021] [Indexed: 02/01/2023]
Abstract
The photocatalytic oxidation (PCO) of pollutants using TiO2-based materials can significantly improve indoor air quality (IAQ), which in turn, has a significant impact on human health and life expectancy. TiO2-based nanoparticles (NPs) are widely used as part of building materials to function as photocatalysts in PCO. In this work, a series of sulfur-doped TiO2 NPs immobilized on a silica matrix were synthesized by combining a sol-gel process with ball milling. The samples were structurally characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), Fourier-transform infrared spectroscopy (FT-IR) and N2 adsorption-desorption isotherms. Furthermore, the morphological characteristics were determined by dynamic light scattering (DLS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The photocatalytic activity of the as prepared S-doped TiO2/SiO2 NPs in the degradation of liquid and air pollutants under visible-light irradiation was investigated. Our results show that sulfur is an effective dopant for activating TiO2/SiO2 photocatalysts under visible-light irradiation. Silica constitutes a "safe-by-design" approach and inhibits the aggregation of NPs during synthesis. The most efficient photocatalyst afforded 79% removal of methyl orange (5 h), 26% removal of acetaldehyde (1 h) and 12% oxidation of NO (1 h).
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Affiliation(s)
| | | | | | | | | | - Ioanna Deligkiozi
- Creative Nano PC, 4 Leventi Street, Peristeri, 12132 Athens, Greece; (T.K.); (S.P.M.); (E.P.); (A.G.); (A.Z.K.)
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Sun HJ, Zhao WJ, Teng XQ, Shu SP, Li SW, Hong HC, Guan DX. Antioxidant responses and pathological changes in the gill of zebrafish (Danio rerio) after chronic exposure to arsenite at its reference dose. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 200:110743. [PMID: 32464441 DOI: 10.1016/j.ecoenv.2020.110743] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/23/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
Gill, as the organ of fish to contact most directly with xenobiotics, suffered more threat. To evaluate the impact of arsenite (AsIII) on the gill of fish, we measured the antioxidative responses (superoxide dismutase (SOD) and catalase (CAT) activities) and oxidative damage (malondialdehyde (MDA) content), histological changes and mRNA transcriptional responses of zebrafish gill, after exposure to AsIII (0, 10, 50, 100, and 150 μg L-1) solutions for 28 days. We found that AsIII increased the activities of CAT by 46%-87%, decreased the activities of SOD and the contents of MDA by 19% and 21%-32%. Furthermore, CuZnSOD and MnSOD mRNA transcription levels were also inhibited, decreasing by 62%-82% and 70%-77%. Besides, ≥ 100 μg L-1 AsIII also caused histological changes (a loss of mucus and desquamation in the surface of the epithelial cells) on zebrafish gill. These results showed that low concentrations of AsIII influenced biochemical and physiological performances of fish gill, which probably aggravates the toxic effect of AsIII on fish.
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Affiliation(s)
- Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Wen-Jun Zhao
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Xiao-Qiang Teng
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Shui-Ping Shu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Shi-Wei Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong, 250022, PR China
| | - Hua-Chang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China.
| | - Dong-Xing Guan
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, PR China.
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8
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Bengalli R, Ortelli S, Blosi M, Costa A, Mantecca P, Fiandra L. In Vitro Toxicity of TiO 2:SiO 2 Nanocomposites with Different Photocatalytic Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1041. [PMID: 31330895 PMCID: PMC6669742 DOI: 10.3390/nano9071041] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/13/2019] [Accepted: 07/17/2019] [Indexed: 01/05/2023]
Abstract
The enormous technological relevance of titanium dioxide (TiO2) nanoparticles (NPs) and the consequent concerns regarding potentially hazardous effects that exposure during production, use, and disposal can generate, encourage material scientists to develop and validate intrinsically safe design solution (safe-by-design). Under this perspective, the encapsulation in a silica dioxide (SiO2) matrix could be an effective strategy to improve TiO2 NPs safety, preserving photocatalytic and antibacterial properties. In this work, A549 cells were used to investigate the toxic effects of silica-encapsulated TiO2 having different ratios of TiO2 and SiO2 (1:1, 1:3, and 3:1). NPs were characterized by electron microscopy and dynamic light scattering, and cell viability, oxidative stress, morphological changes, and cell cycle alteration were evaluated. Resulting data demonstrated that NPs with lower content of SiO2 are able to induce cytotoxic effects, triggered by oxidative stress and resulting in cell necrosis and cell cycle alteration. The physicochemical properties of NPs are responsible for their toxicity. Particles with small size and high stability interact with pulmonary cells more effectively, and the different ratio among silica and titania plays a crucial role in the induced cytotoxicity. These results strengthen the need to take into account a safe(r)-by-design approach in the development of new nanomaterials for research and manufacturing.
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Affiliation(s)
- Rossella Bengalli
- POLARIS Research Centre, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, MI, Italy.
| | - Simona Ortelli
- Institute of Science and Technology for Ceramics (CNR-ISTEC), National Research Council of Italy, Via Granarolo 64, 48018 Faenza, RA, Italy
| | - Magda Blosi
- Institute of Science and Technology for Ceramics (CNR-ISTEC), National Research Council of Italy, Via Granarolo 64, 48018 Faenza, RA, Italy
| | - Anna Costa
- Institute of Science and Technology for Ceramics (CNR-ISTEC), National Research Council of Italy, Via Granarolo 64, 48018 Faenza, RA, Italy
| | - Paride Mantecca
- POLARIS Research Centre, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, MI, Italy
| | - Luisa Fiandra
- POLARIS Research Centre, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, MI, Italy
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Yang R, Li Y, Wang X, Yan J, Pan D, Xu Y, Wang L, Yang M. Doxorubicin loaded ferritin nanoparticles for ferroptosis enhanced targeted killing of cancer cells. RSC Adv 2019; 9:28548-28553. [PMID: 35529630 PMCID: PMC9071105 DOI: 10.1039/c9ra04478g] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/02/2019] [Indexed: 12/16/2022] Open
Abstract
In recent years, ferroptosis has been investigated widely as a new form of cell death. Development of nanodrugs for ferroptosis induction in cancer cells may be a promising approach for cancer treatment. Here, we developed a type of nanoparticle consisting of the antitumor drug doxorubicin and exogenous ferritin. The drug loading process did not change the size of ferritin obviously. And this nanoparticle could induce the accumulation of ROS and cell ferroptosis for transferrin receptor overexpressed tumor cell, HT29. The ferroptosis process was also confirmed using inhibitors for ferroptosis. The cytotoxicity of this nanoparticle is similar to that of free DOX. This study provides a new strategy for targeting and killing transferrin receptor overexpressed tumor cells. DOX loaded ferritin selectively induces ferroptosis enhanced killing of transferrin receptor 1 overexpressed cancer cells.![]()
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Affiliation(s)
- Runlin Yang
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Yaoqi Li
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Xinyu Wang
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Junjie Yan
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Donghui Pan
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Yuping Xu
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Lizhen Wang
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
| | - Min Yang
- Key Laboratory of Nuclear Medicine
- Ministry of Health
- Jiangsu Key Laboratory of Molecular Nuclear Medicine
- Jiangsu Institute of Nuclear Medicine
- Wuxi
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