scholarly journals Synthesis and optical properties of composite films from P3HT and sandwich-like Ag–C–Ag nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79860-79867 ◽  
Author(s):  
Lingpeng Yan ◽  
Yamin Hao ◽  
Xiaoting Feng ◽  
Yongzhen Yang ◽  
Xuguang Liu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Ag Nanoparticles ◽  
Composite Films ◽  
Carbon Matrix ◽  
Carbon Shell ◽  
Hydrothermal Conditions ◽  
Step Method ◽  
Ag Nps ◽  
One Step

Sandwich-like Ag–C–Ag nanoparticles (Ag–C–Ag NPs) were synthesized under mild hydrothermal conditions in a one-step method with Ag encapsulated in the centre, uniformly dispersed in a carbon matrix and on a carbon shell.

scholarly journals Facile one-step synthesis of quaternary AgInZnS quantum dots and their applications for causing bioeffects and detecting Cu2+

RSC Advances ◽  
2020 ◽  
Vol 10 (16) ◽  
pp. 9172-9181 ◽  
Author(s):  
Xiao-Le Han ◽  
Qingyu Li ◽  
Hao Hao ◽  
Chenyin Liu ◽  
Run Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Hydrothermal Reaction ◽  
Water Soluble ◽  
Step Method ◽  
One Step

Water-soluble AgInZnS quantum dots were synthesized with glutathione as a stabilizer by a facile one-step method based on a hydrothermal reaction at 110 °C. It exhibited excellent optical properties, which can be used as sensor to detect Cu2+.

Photocatalytic Performance of Ag Nanoparticles Modified ZnO Microplates Prepared by One-Step Method

2014 ◽  
Vol 10 (3) ◽  
pp. 389-393 ◽  
Author(s):  
Y.Q. Liang ◽  
Z.H. Gao ◽  
Z.D. Cui ◽  
S.L. Zhu ◽  
Z.Y. Li ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Photocatalytic Performance ◽  
Step Method ◽  
One Step

PREPARATION AND INVESTIGATION OF OPTICAL, THERMAL, AND ELECTROCHEMICAL PROPERTIES OF Ag/Co NANOPARTICLES

NANO ◽  
2012 ◽  
Vol 07 (02) ◽  
pp. 1250006 ◽  
Author(s):  
Z. PARANG ◽  
A. KESHAVARZ ◽  
S. FARAHI ◽  
S. M. ELAHI ◽  
M. GHORANNEVISS ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electrochemical Techniques ◽  
Mie Theory ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Step Method ◽  
Ag Nps ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Co Nanoparticles

Ag/Co nanoparticles (NPs) were prepared by a two-step method. First, Ag NPs were synthesized by "Controlled Current Coulometry" (CCC) electrochemical method using a Pt rotating electrode. Then, Ag/Co core-shell NPs were prepared through the reduction method using Ag NPs as a core. Both steps were accomplished at room temperature. Techniques such as patterned X-ray diffraction (XRD) and transmission electron microscopy (TEM) were employed for the characterization of Ag/Co NPs. Optical properties of synthesized NPs were also investigated by UV-Vis spectroscopy. The absorption peak of Ag NPs was observed at ~400 nm wavelength and the peaks that were detected at 425 nm and 415 nm wavelengths reveal the formation of Ag/Co NPs. The core-shell structure of Ag/Co NPs was confirmed by thermal and electrochemical techniques. We also applied "Mie" theory to calculate the absorption cross-section band of synthesized Ag/Co NPs. Comparison between the results of optical properties and also those obtained from "Mie" theory showed good agreements.

Green Methods for Preparing Ag Nanoparticles Decorated Non-Woven Fabrics with High Antibacterial Efficiency

2020 ◽  
Vol 984 ◽  
pp. 75-81
Author(s):  
Zhi Jin ◽  
Jin Ru Ji ◽  
Xi Ya Wang ◽  
Chao Fan Shi ◽  
Xi Wen Zhang
Keyword(s):  
Plasma Treatment ◽  
Ag Nanoparticles ◽  
Chemical Reduction ◽  
Antibacterial Properties ◽  
Chemical Precipitation ◽  
Woven Fabrics ◽  
Dbd Plasma ◽  
Step Method ◽  
Ag Nps ◽  
Antibacterial Efficiency

The present study involves preparation of Ag nanoparticles (Ag NPs) deposited on non-woven fabrics by a two-step method including the chemical precipitation of Ag2O nanoparticles on the fabrics followed by in situ reducing of the precursor into Ag NPs by different reductive processes including chemical reduction, photo-reduction and dielectric barrier discharge (DBD) cold plasma treatment. The morphology as well as the antibacterial efficiency of the Ag NPs deposited on non-woven fabrics are also evaluated. The Ag NPs-modified fabrics prepared by DBD plasma treatment exhibit significant antibacterial properties against both Escherichia coli and Staphylococcus aureus, and accordingly have potential applications in the healthcare and medicine fields.

Green Fabrication of Hydrogel-Immobilized Au@Ag Nanoparticles Using Tannic Acid and Application in Catalysis

2021 ◽  
Author(s):  
Hengxi He ◽  
Didier Astruc ◽  
Haibin Gu
Keyword(s):  
Tannic Acid ◽  
Ag Nanoparticles ◽  
Core Shell ◽  
Step Method ◽  
Shell Nanoparticles ◽  
Active Core ◽  
Catalytically Active ◽  
One Step ◽  
Core Shell Nanoparticles

Highly catalytically active core-shell nanoparticles (NPs) have attracted great attention towards applications. Herein, core-shell Au@AgNPs were simply obtained via a green and cheap one-step method using tannic acid (TA) as...

ONE-STEP COLLOID CHEMICAL ROUTE TO PREPARE HETEROSTRUCTURE EuSe/Ag NANOPARTICLES FOR LUMINESCENCE RESONANCE ENERGY TRANSFER SENSORS

NANO ◽  
2014 ◽  
Vol 09 (03) ◽  
pp. 1450030
Author(s):  
LIN XU ◽  
HAO CHENG ◽  
CHUANXI WANG ◽  
QUAN LIN
Keyword(s):  
Energy Transfer ◽  
Photoelectron Spectroscopy ◽  
Ag Nanoparticles ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Ag Nps ◽  
Chemical Route ◽  
Transmission Electron ◽  
Potential Applications ◽  
One Step

The heterostructure EuSe / Ag nanoparticles (NPs) were prepared through one-step colloid chemical method. Blue fluorescent EuSe NPs were prepared by amine reducing method with oleylamine (OLA) as surface stabilizer. The colloid microemulsion was formed through the mixture of AgNO 3 aqueous solution and the EuSe n-Hexane solution. On the interface, Ag + ions could be reduced to Ag NPs by OLA. Finally heterogeneous EuSe / Ag NPs were obtained. The structure and properties of EuSe NPs and EuSe / Ag NPs were characterized by photoluminescence (PL), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results showed that the luminescence resonance energy transfer (LRET) occurred on the interface of EuSe NPs and Ag NPs. Also it demonstrated that the linear enhanced LRET effect happened with increasing the concentration of Ag +. All these properties make our heterostructural EuSe / Ag NPs to have interesting potential applications for ions detection and biosensors.

The Synthesis of Mesoporous Ag/SBA-15 and Catalytic Reaction of Propargylamines via a Three-Component Coupling Reaction of Aldehyde, Alkyne and Amine

2012 ◽  
Vol 550-553 ◽  
pp. 336-339 ◽  
Author(s):  
Dong Tian
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Catalytic Reaction ◽  
Ag Nanoparticles ◽  
Coupling Reaction ◽  
Mesoporous Silicas ◽  
Step Method ◽  
One Step ◽  
Adsorption Desorption ◽  
Three Component Coupling

Mesoporous silicas SBA-15 with Ag nanoparticles in the channel was synthesized by one-step method. Samples characterzation were performed by the XRD, TEM, adsorption/desorption of nitrogen and ICP-AES. And the heterogeneous catalysis(Ag/SBA-15) shows catalytic activity in three-component coupling reaction of aldehyde, alkyne, and amine.

scholarly journals Ethanol Sensors Based on Porous In2O3 Nanosheet-Assembled Micro-Flowers

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3353
Author(s):  
Wenbo Qin ◽  
Zhenyu Yuan ◽  
Hongliang Gao ◽  
Fanli Meng
Keyword(s):  
Electron Microscopy ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Hydrothermal Time ◽  
Hydrothermal Conditions ◽  
Step Method ◽  
Detection Range ◽  
Transmission Electron ◽  
Porous Nanosheets ◽  
One Step

By controlling the hydrothermal time, porous In2O3 nanosheet-assembled micro-flowers were successfully synthesized by a one-step method. The crystal structure, microstructure, and internal structure of the prepared samples were represented by an x-ray structure diffractometry, scanning electron microscopy, and transmission electron microscopy, respectively. The characterization results showed that when the hydrothermal time was 8 h, the In2O3 nano materials presented a flower-like structure assembled by In2O3 porous nanosheets. After successfully preparing the In2O3 gas sensor, the gas sensing was fully studied. The results show that the In2O3 gas sensor had an excellent gas sensing response to ethanol, and the material prepared under 8 h hydrothermal conditions had the best gas sensing property. At the optimum working temperature of 270 °C, the highest response value could reach 66, with a response time of 12.4 s and recovery time of 10.4 s, respectively. In addition, the prepared In2O3 gas sensor had a wide detection range for ethanol concentration, and still had obvious response for 500 ppb ethanol. Furthermore, the gas sensing mechanism of In2O3 micro-flowers was also studied in detail.

Sign in / Sign up

Export Citation Format

Share Document