Preferential killing of bacterial cells by surface-modified organosilane-treated ZnO quantum dots synthesized through a co-precipitation method

2021 ◽  
Author(s):  
Hariventhan Ragupathi ◽  
Youngson Choe ◽  
Antony Arockiaraj M.
Keyword(s):  
Quantum Dots ◽  
Precipitation Method ◽  
Bacterial Cells ◽  
Antiviral Activities ◽  
Zno Quantum Dots ◽  
Co Precipitation ◽  
Surface Modified

The aim of this study was to screen and determine the significant antibacterial/antiviral activities of surface-modified ZnO@MPS QDs owing to their impressive activities against microorganisms.

Synthesis of Silica Modified Large-Sized Hydroxyapatite Whiskers by a Hydrothermal Co-Precipitation Method

2015 ◽  
Vol 645-646 ◽  
pp. 1339-1344 ◽  
Author(s):  
Yan Ting Yin ◽  
Qing Hua Chen ◽  
Ting Ting Yan ◽  
Qing Hua Chen
Keyword(s):  
Bone Repair ◽  
Ethanol Solution ◽  
Morphological Properties ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Type ◽  
Ft Ir ◽  
Co Precipitation ◽  
Surface Modified

The objective of this study was to develop a novel silica modified large-sized hydroxyapatite whiskers with improved properties for use in bone repair applications. Large-sized whiskers with a mean length of 250μm were obtained by a hydrothermal co-precipitation method at 150°C, 7.5Mpa in high-pressure reactor. Silica modified hydroxyapatite whiskers were prepared by dissolving TEOS in ethanol solution, then sintering with hydroxyapatite. The compositional and morphological properties of prepared whiskers were studied by means of x-ray diffraction (XRD), Fouier transform infrared (FT-IR), scanning electron microscopy (SEM). The results indicated the evidence of nanosilicon dioxide particles on the surface of HAP whiskers. The size of nanosilicon dioxide particles depends on dropping and stirring rate. Hence, this new type of silica modified large-sized hydroxyapatite whiskers is a valuable candidate for biomedical applications.Key words: hydroxyapatite, hydrothermal co-precipitation, surface modified, whiskers

Structural, photoconductivity and photoluminescence characterization of cadmium sulfide quantum dots prepared by a co-precipitation method

2011 ◽  
Vol 7 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Sheo K. Mishra ◽  
Rajneesh K. Srivastava ◽  
S. G. Prakash ◽  
Raghvendra S. Yadav ◽  
A. C. Panday
Keyword(s):  
Quantum Dots ◽  
Cadmium Sulfide ◽  
Precipitation Method ◽  
Co Precipitation

Preparation of highly luminescent BaSO4 protected CdTe quantum dots as conversion materials for excellent color-rendering white LEDs

2015 ◽  
Vol 3 (12) ◽  
pp. 2831-2836 ◽  
Author(s):  
Yajing Chang ◽  
Xudong Yao ◽  
Zhongping Zhang ◽  
Danlu Jiang ◽  
Yalan Yu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cdte Quantum Dots ◽  
Precipitation Method ◽  
White Leds ◽  
Conversion Materials ◽  
Co Precipitation ◽  
Color Rendering ◽  
First Time ◽  
Excellent Color ◽  
Inorganic Matrix

For the first time, colloidal CdTe quantum dots are incorporated into an inorganic matrix, BaSO4, through a co-precipitation method.

Enhanced ultraviolet emission and optical properties in polyvinyl pyrrolidone surface modified ZnO quantum dots

2001 ◽  
Vol 90 (9) ◽  
pp. 4489-4493 ◽  
Author(s):  
C. L. Yang ◽  
J. N. Wang ◽  
W. K. Ge ◽  
L. Guo ◽  
S. H. Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Polyvinyl Pyrrolidone ◽  
Ultraviolet Emission ◽  
Zno Quantum Dots ◽  
Surface Modified

Synthesis and Fluorescence Properties of Water-Soluble L-Cysteine-Modified ZnSe:Ag Quantum Dots

2014 ◽  
Vol 1033-1034 ◽  
pp. 1172-1175
Author(s):  
Li Ping Lin ◽  
Feng Hua Huang ◽  
Pei Feng Chen
Keyword(s):  
Crystal Structure ◽  
Quantum Dots ◽  
Optical Properties ◽  
Absorption Spectrum ◽  
Photoluminescence Spectrum ◽  
Water Soluble ◽  
Precipitation Method ◽  
X Ray ◽  
Surface Modifier ◽  
Co Precipitation

The water-soluble ZnSe:Ag quantum dots were synthesized in aqueous medium by chemical co-precipitation method with L-cysteine as surface modifier. The crystal structure and optical properties of the obtained ZnSe:Ag quantum dots have been characterized by X-ray power diffraction, infrared spectrum, UV-Vis absorption spectrum and photoluminescence spectrum. Results indicate that ZnSe:Ag quantum dots belong to the cubic blende structure and have good fluorescent characteristics. The L-cysteine modified on the surface of ZnSe:Ag quantum dots renders the quantum dots water-soluble, biocompatible.

Synthesis of silane surface modified ZnO quantum dots with ultrastable, strong and tunable luminescence

2011 ◽  
Vol 47 (43) ◽  
pp. 11921 ◽  
Author(s):  
Han-Qiao Shi ◽  
Wan-Nan Li ◽  
Li-Wei Sun ◽  
Yu Liu ◽  
Hong-Mei Xiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Zno Quantum Dots ◽  
Surface Modified
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