scholarly journals Single-Step Coating of Mesoporous SiO2 onto Nanoparticles: Growth of Yolk-Shell Structures from Core-Shell Structures

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiaobin Xie ◽  
Marijn A. van Huis ◽  
Alfons van Blaaderen
Keyword(s):  
Au Nanoparticles ◽  
Single Step ◽  
Shell Structures ◽  
Great Promise ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Mesoporous Sio2

Yolk-shell nanoparticles based on mesoporous SiO2 (mSiO2) coating of Au nanoparticles (Au NPs) hold great promise for many applications in e.g., catalysis, biomedicine, and sensing. Here, we present a single-step...

scholarly journals Magneto-Optical Characteristics of Streptavidin-Coated Fe3O4@Au Core-Shell Nanoparticles for Potential Applications on Biomedical Assays

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Chin-Wei Lin ◽  
Jian-Ming Chen ◽  
You-Jun Lin ◽  
Ling-Wei Chao ◽  
Sin-Yi Wei ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Faraday Effect ◽  
Au Nanoparticles ◽  
Optical Characteristics ◽  
Enzyme Linked Immunosorbent Assay ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Time Resolved ◽  
Biotechnology Research ◽  
Core Shell Nanoparticles

Abstract Recently, gold-coated magnetic nanoparticles have drawn the interest of researchers due to their unique magneto-plasmonic characteristics. Previous research has found that the magneto-optical Faraday effect of gold-coated magnetic nanoparticles can be effectively enhanced because of the surface plasmon resonance of the gold shell. Furthermore, gold-coated magnetic nanoparticles are ideal for biomedical applications because of their high stability and biocompatibility. In this work, we synthesized Fe3O4@Au core-shell nanoparticles and coated streptavidin (STA) on the surface. Streptavidin is a protein which can selectively bind to biotin with a strong affinity. STA is widely used in biotechnology research including enzyme-linked immunosorbent assay (ELISA), time-resolved immunofluorescence (TRFIA), biosensors, and targeted pharmaceuticals. The Faraday magneto-optical characteristics of the biofunctionalized Fe3O4@Au nanoparticles were measured and studied. We showed that the streptavidin-coated Fe3O4@Au nanoparticles still possessed the enhanced magneto-optical Faraday effect. As a result, the possibility of using biofunctionalized Fe3O4@Au nanoparticles for magneto-optical biomedical assays should be explored.

Polymer-assisted synthesis of aligned amorphous silicon nanowires and their core/shell structures with Au nanoparticles

2004 ◽  
Vol 397 (1-3) ◽  
pp. 128-132 ◽  
Author(s):  
Xing-bin Yan ◽  
Tao Xu ◽  
Shan Xu ◽  
Gang Chen ◽  
Qun-ji Xue ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Silicon Nanowires ◽  
Au Nanoparticles ◽  
Shell Structures ◽  
Core Shell

Impact of the capping agent removal from Au NPs@MOF core-shell nanoparticles heterogeneous catalysts

2022 ◽  
Author(s):  
Shan Dai ◽  
Kieu Phung Ngoc ◽  
Laurence Grimaud ◽  
Sanjun Zhang ◽  
Antoine Tissot ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Synergistic Effects ◽  
Core Shell ◽  
Capping Agent ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Capping Agents ◽  
Core Shell Nanoparticles

Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity...

A novel method to modify the color of VO2-based thermochromic smart films by solution-processed VO2@SiO2@Au core–shell nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47249-47257 ◽  
Author(s):  
Xuanming Lu ◽  
Xiudi Xiao ◽  
Ziyi Cao ◽  
Yongjun Zhan ◽  
Haoliang Cheng ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Solution Process ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Solution Processed ◽  
Novel Method ◽  
Core Shell Nanoparticles ◽  
Color Modification

A facile solution process was developed to prepare VO2@SiO2@Au nanoparticles for color modification of VO2-based smart films.

Facile Electrochemical Characterization of Core/Shell Nanoparticles. Ag Core/Ag2O Shell Structures

Nano Letters ◽  
2007 ◽  
Vol 7 (5) ◽  
pp. 1406-1412 ◽  
Author(s):  
Jalal Ghilane ◽  
Fu-Ren F. Fan ◽  
Allen J. Bard ◽  
Nicholas Dunwoody
Keyword(s):  
Electrochemical Characterization ◽  
Shell Structures ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Facile and single-step route towards ZnO@C core–shell nanoparticles as an oxygen vacancy induced visible light active photocatalyst using the thermal decomposition of Zn(an)2(NO3)2

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70644-70652 ◽  
Author(s):  
Sandesh Y. Sawant ◽  
Moo Hwan Cho
Keyword(s):  
Thermal Decomposition ◽  
Visible Light ◽  
Single Step ◽  
Core Shell ◽  
Nitrate Complex ◽  
Shell Nanoparticles ◽  
Visible Light Active ◽  
Visible Light Driven ◽  
Carbon Core ◽  
Core Shell Nanoparticles

Zinc oxide/carbon core–shell nanoparticles, synthesized using thermal decomposition of zinc aniline nitrate complex, showed excellent visible-light driven photocatalytic activity.

Synthesis of Co@Au Core-Shell Nanoparticles in Non-Aqueous Solution and their Characterization

2004 ◽  
Vol 818 ◽  
Author(s):  
Zhihui Ban ◽  
C. J. O'Connor
Keyword(s):  
Aqueous Solution ◽  
Quantum Interference ◽  
Au Nanoparticles ◽  
Magnetic Measurements ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Shell Nanoparticles ◽  
Transmission Electron ◽  
Average Size ◽  
Core Shell Nanoparticles

AbstractA homogeneous non-aqueous solution reactions method has been developed to prepare gold-coated cobalt (Co@Au) nanoparticles. After the sample was washed with 8% HCl, XRD (X-Ray Diffraction), TEM (transmission electron microscopy), and magnetic measurements SQUID (Superconducting Quantum Interference Device) are utilized to characterize the nanocomposites. XRD shows the pattern of sample, which is responding to gold and cobalt, no cobalt oxide was found. TEM results show that the average size of Co@Au nanoparticles is about 10 nm and we can find core-shell structure of the sample. SQUID results show that the particles are ferromagnetic materials at 300K. So the gold- coated cobalt nanoparticles (Co@Au) can be successfully prepared by the homogeneous nonaqueous approach. This kind of core-shell materials is stable in acid condition, which would give many opportunities for bio- application.

scholarly journals Counterion coupled (COCO) gemini surfactant capped Ag/Au alloy and core–shell nanoparticles for cancer therapy

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37830-37845 ◽  
Author(s):  
A. Mohammed Siddiq ◽  
Ramar Thangam ◽  
Balaraman Madhan ◽  
Md. Sayem Alam
Keyword(s):  
Dna Damage ◽  
Cancer Therapy ◽  
Cancer Cell ◽  
Cell Apoptosis ◽  
Gemini Surfactant ◽  
Au Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Cancer Cell Apoptosis ◽  
Core Shell Nanoparticles

In this work hybrid silver (Ag)–gold (Au) nanoparticles (NPs) with different sizes and compositions were synthesized and applied for anticancer evaluations and which is effectively involved in cancer cell apoptosis through DNA damage.

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