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Seeded Growth Synthesis of Zirconia@Gold Particles in Aqueous Solution. NANOMATERIALS 2020; 10:nano10061197. [PMID: 32575397 PMCID: PMC7353092 DOI: 10.3390/nano10061197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 11/16/2022]
Abstract
Metal-ceramic composite particles are of increasing interest due to their potential applications in photonic metamaterials as well as next-generation catalysts. The zirconia-gold system has received little attention due to the lack of controllable preparation methods. Well-known methods for the deposition of gold nanoshells on silica spheres, however, should be adaptable for similar zirconia-based materials. Here, we present a novel synthetic approach to the well-controlled deposition of gold on the surface of sol-gel derived zirconia mesoparticles by a stepwise method involving the immobilization of gold nanoparticles and repeated seeded-growth steps. We show that the immobilization efficiency is strongly enhanced by acidification with hydrochloric acid and additional employment of aminomethylphosphonic acid as coupling agent. The optimum conditions are identified and the subsequent incremental growth by seeded reduction of gold is demonstrated. The results shed light on the parameters governing the preparation of zirconia@gold composite particles and our synthetic approach provides a promising tool for future developments in complex nanomaterials design.
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Qiao Y, Li W, Bao J, Zheng Y, Feng L, Ma Y, Yang K, Wu A, Bai H, Yang Y. Controlled synthesis and luminescence properties of core-shell-shell structured SiO 2@AIPA-S-Si-Eu@SiO 2 and SiO 2@AIPA-S-Si-Eu-phen@SiO 2 nanocomposites. Sci Rep 2020; 10:3522. [PMID: 32103091 PMCID: PMC7044297 DOI: 10.1038/s41598-020-60538-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/07/2020] [Indexed: 11/09/2022] Open
Abstract
Two novel core-shell structured SiO2@AIPA-S-Si-Eu and SiO2@AIPA-S-Si-Eu-phen nanocomposites have been synthesized by a bifunctional organic ligands ((HOOC)2C6H3NHCONH(CH2)3Si(OCH2CH3)3) (defined as AIPA-S-Si) connected with Eu3+ ions and silica via covalent bond. And the corresponding core-shell-shell structured SiO2@AIPA-S-Si-Eu@SiO2 and SiO2@AIPA-S-Si-Eu-phen@SiO2 nanocomposites with enhanced luminescence have been synthesized by tetraethyl orthosilicate (TEOS) hydrolysis co-deposition method. The composition and micromorphology of the nanocomposites were characterized by means of Fourier-transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDX) and X-ray photoelectron spectroscopy (XPS). The as-synthesized core-shell and core-shell-shell structured nanocomposites have excellent luminescence intensity and long lifetime. The nanocomposites show bright red light under ultraviolet lamp. However, the core-shell-shell structured nanocomposites have stronger luminescence intensity than the corresponding core-shell structured nanocomposites. Meanwhile, the core-shell-shell structured nanocomposites still exhibit good luminescence stability in aqueous solution. In addition, a large number of Si-OH on the surface of the core-shell-shell structured nanocomposites can be attached to many biomacromolecules. Therefore, they have potential applications in the fields of biology and luminescence.
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Affiliation(s)
- Yan Qiao
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Wenxian Li
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
| | - Jinrong Bao
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Yushan Zheng
- Inner Mongolia Autonomous Region Food Inspection Test center, Hohhot, 010021, China
| | - Lina Feng
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Yangyang Ma
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Kuisuo Yang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Anping Wu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - He Bai
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Yunjiang Yang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
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Qiao Y, Li Y, Li W, Bao J, Zheng Y, Feng L, Ma Y, Yang K, Wu A, Bai H, Yang Y. Preparation and luminescence properties of core–shell structure composites SiO 2@ANA-Si–Eu and SiO 2@ANA-Si–Eu–L and core–shell–shell structure composites SiO 2@ANA-Si–Eu@SiO 2 and SiO 2@ANA-Si–Eu–L@SiO 2. NEW J CHEM 2020. [DOI: 10.1039/c9nj05499e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Preparation and properties of core–shell and core–shell–shell structure composites with good luminescence properties.
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Finsel M, Hemme M, Döring S, Rüter JSV, Dahl GT, Krekeler T, Kornowski A, Ritter M, Weller H, Vossmeyer T. Synthesis and thermal stability of ZrO 2@SiO 2 core-shell submicron particles. RSC Adv 2019; 9:26902-26914. [PMID: 35528597 PMCID: PMC9070609 DOI: 10.1039/c9ra05078g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 08/19/2019] [Indexed: 01/08/2023] Open
Abstract
ZrO2@SiO2 core-shell submicron particles are promising candidates for the development of advanced optical materials. Here, submicron zirconia particles were synthesized using a modified sol-gel method and pre-calcined at 400 °C. Silica shells were grown on these particles (average size: ∼270 nm) with well-defined thicknesses (26 to 61 nm) using a seeded-growth Stöber approach. To study the thermal stability of bare ZrO2 cores and ZrO2@SiO2 core-shell particles they were calcined at 450 to 1200 °C. After heat treatments, the particles were characterized by SEM, TEM, STEM, cross-sectional EDX mapping, and XRD. The non-encapsulated, bare ZrO2 particles predominantly transitioned to the tetragonal phase after pre-calcination at 400 °C. Increasing the temperature to 600 °C transformed them to monoclinic. Finally, grain coarsening destroyed the spheroidal particle shape after heating to 800 °C. In striking contrast, SiO2-encapsulation significantly inhibited grain growth and the t → m transition progressed considerably only after heating to 1000 °C, whereupon the particle shape, with a smooth silica shell, remained stable. Particle disintegration was observed after heating to 1200 °C. Thus, ZrO2@SiO2 core-shell particles are suited for high-temperature applications up to ∼1000 °C. Different mechanisms are considered to explain the markedly enhanced stability of ZrO2@SiO2 core-shell particles.
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Affiliation(s)
- Maik Finsel
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Maria Hemme
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Sebastian Döring
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Jil S V Rüter
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Gregor T Dahl
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Tobias Krekeler
- Electron Microscopy Unit, Hamburg University of Technology Eißendorfer Straße 42 D-21073 Hamburg Germany
| | - Andreas Kornowski
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Martin Ritter
- Electron Microscopy Unit, Hamburg University of Technology Eißendorfer Straße 42 D-21073 Hamburg Germany
| | - Horst Weller
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
| | - Tobias Vossmeyer
- Institute of Physical Chemistry, University of Hamburg Grindelallee 117 D-20146 Hamburg Germany
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Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO₂@PMDA-Si-Tb@SiO₂ and SiO₂@PMDA-Si-Tb-phen@SiO₂. NANOMATERIALS 2019; 9:nano9020189. [PMID: 30717359 PMCID: PMC6410162 DOI: 10.3390/nano9020189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/21/2019] [Accepted: 01/30/2019] [Indexed: 02/07/2023]
Abstract
Two novel core-shell composites SiO₂@PMDA-Si-Tb, SiO₂@PMDA-Si-Tb-phen with SiO₂ as the core and terbium organic complex as the shell, were successfully synthesized. The terbium ion was coordinated with organic ligand forming terbium organic complex in the shell layer. The bi-functional organosilane ((HOOC)₂C₆H₂(CONH(CH₂)₃Si(OCH₂CH₃)₃)₂ (abbreviated as PMDA-Si) was used as the first ligand and phen as the second ligand. Furthermore, the silica-modified SiO₂@PMDA-Si-Tb@SiO₂ and SiO₂@PMDA-Si-Tb-phen@SiO₂ core-shell-shell composites were also synthesized by sol-gel chemical route. An amorphous silica shell was coated around the SiO₂@PMDA-Si-Tb and SiO₂@PMDA-Si-Tb-phen core-shell composites. The core-shell and core-shell-shell composites both exhibited excellent luminescence in solid state. The luminescence of core-shell-shell composites was stronger than that of core-shell composites. Meanwhile, an improved luminescence stability property for the core-shell-shell composites was found in the aqueous solution. The core-shell-shell composites exhibited bright luminescence, high stability, long lifetime, and good solubility, which may present potential applications in the bio-medical field.
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Byoun W, Jung S, Tran NM, Yoo H. Synthesis and Application of Dendritic Fibrous Nanosilica/Gold Hybrid Nanomaterials. ChemistryOpen 2018; 7:349-355. [PMID: 29872610 PMCID: PMC5974554 DOI: 10.1002/open.201800040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Indexed: 12/17/2022] Open
Abstract
Morphologically unique silica nanoparticles can be used as effective templates to prepare silica-metal hybrid nanomaterials, which are highly applicable in a variety of areas. Mesoporous silica nanoparticles, which have high surface areas and an abundance of pores, can be used to synthesize mesoporous silica core-metal shell nanostructures with catalytically active sites. In this work, dendritic fibrous nanosilica (DFNS) with a high surface area is successfully employed as a template to synthesize DFNS/Au hybrid nanomaterials. Au nanodots are initially synthesized through the selective reduction of Au ions on the surface of the DFNS after surface modification to form DFNS/Au dots. A seed-mediated growth method is used to controllably grow Au nanoparticles on the DFNS/Au dots to generate DFNS core-Au nanoparticles shell nanohybrids (DFNS/Au NPs) and DFNS core-Au layer shell nanohybrids (DFNS/Au layers). The catalytic activities of DFNS/Au NPs and DFNS/Au layers in the 4-nitrophenol reduction reaction are compared.
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Affiliation(s)
- Wongyun Byoun
- Department of ChemistryHallym UniversityChuncheon, Gangwon-do24252Republic of Korea
| | - Soeun Jung
- Department of ChemistryHallym UniversityChuncheon, Gangwon-do24252Republic of Korea
| | - Ngoc Minh Tran
- Department of ChemistryHallym UniversityChuncheon, Gangwon-do24252Republic of Korea
| | - Hyojong Yoo
- Department of ChemistryHallym UniversityChuncheon, Gangwon-do24252Republic of Korea
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Yang KS, Li YL, Ma YY, Feng LN, Wu AP, Qiao Y, Bao JR, Li WX, Zhu XW, Yu RB. Synthesis and photoluminescence properties of novel core–shell–shell SiO 2@CePO 4:Tb@SiO 2 submicro-spheres. CrystEngComm 2018. [DOI: 10.1039/c8ce01189c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The low-cost preparation of the core–shell–shell SiO2@CePO4:Tb@SiO2 was achieved, and the biocompatibility was improved with the use of SiO2.
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Affiliation(s)
- Kui-Suo Yang
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Yi-Lian Li
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Yang-Yang Ma
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Li-Na Feng
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - An-Ping Wu
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Yan Qiao
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Jin-Rong Bao
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Wen-Xian Li
- School of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Xiao-Wei Zhu
- College of Pharmacology
- Inner Mongolia Medical University
- Hohhot 010059
- China
| | - Ran-Bo Yu
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing
- China
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