scholarly journals The use of biodegradable polymers for the stabilization of copper nanoparticles synthesized by chemical reduction method

2017 ◽  
Vol 40 (5) ◽  
pp. 1013-1020 ◽  
Author(s):  
Ali Olad ◽  
Mahnaz Alipour ◽  
Rahimeh Nosrati
Keyword(s):  
Biodegradable Polymers ◽  
Copper Nanoparticles ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method

Preparation of copper nanoparticles by chemical reduction method using potassium borohydride

2010 ◽  
Vol 20 ◽  
pp. s240-s244 ◽  
Author(s):  
Qiu-li ZHANG ◽  
Zhi-mao YANG ◽  
Bing-jun DING ◽  
Xin-zhe LAN ◽  
Ying-juan GUO
Keyword(s):  
Copper Nanoparticles ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
Potassium Borohydride

Seed mediated copper nanoparticle synthesis for fabricating oxidation free interdigitated electrodes using intense pulse light sintering for flexible printed chemical sensors

2017 ◽  
Vol 5 (42) ◽  
pp. 11128-11137 ◽  
Author(s):  
Krishnamraju Ankireddy ◽  
Thad Druffel ◽  
Swathi Vunnam ◽  
Gregor Filipič ◽  
Ruvini Dharmadasa ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Chemical Sensors ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Nanoparticle Synthesis ◽  
Intense Pulse Light ◽  
Copper Nanoparticle ◽  
Chemical Reduction Method ◽  
Interdigitated Electrodes ◽  
Seed Mediated

A facile aqueous-based seed-mediated chemical reduction method is developed for the synthesis of copper nanoparticles.

scholarly journals Glycerol Valorization over ZrO2-Supported Copper Nanoparticles Catalysts Prepared by Chemical Reduction Method

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1040
Author(s):  
Juan Garcés ◽  
Ramón Arrué ◽  
Néstor Novoa ◽  
Andreia F. Peixoto ◽  
Ricardo J. Chimentão
Keyword(s):  
Copper Nanoparticles ◽  
Reduction Method ◽  
Chemical Reduction ◽  
X Ray Diffraction ◽  
Chemical Reduction Method ◽  
X Ray ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Region I ◽  
Temperature Programmed

Copper nanoparticles (NPs) and ZrO2-supported copper NPs (Cu NPs/ZrO2) were synthesized via a chemical reduction method applying different pH (4, 7 and 9) and evaluated in a glycerol dehydration reaction. Copper NPs were characterized with transmission electron microscopy (TEM) and UV–vis spectroscopy. Transmission electron microcopy (TEM) results revealed a homogeneous distribution of copper NPs. A hypsochromic shift was identified with UV–vis spectroscopy as the pH of the synthesis increased from pH = 4 to pH = 9. Zirconia-supported copper NPs catalysts were characterized using N2 physisorption, X-ray diffraction (XRD), TEM, X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), temperature-programmed desorption of ammonia (NH3-TPD) and N2O chemisorption. The presence of ZrO2 in the chemical reduction method confirmed the dispersion of the copper nanoparticles. X-ray diffraction indicated only the presence of tetragonal zirconia patterns in the catalysts. XPS identified the Cu/Zr surface atomic ratio of the catalysts. TPR patterns showed two main peaks for the Cu NPS/ZrO2 pH = 9 catalyst; the first peak between 125 and 180 °C (region I) was ascribed to more dispersed copper species, and the second one between 180 and 250 °C (region II) was assigned to bulk CuO. The catalysts prepared at pH = 4 and pH = 7 only revealed reduction at lower temperatures (region I). Copper dispersion was determined by N2O chemisorption. With NH3-TPD it was found that Cu NPs/ZrO2 pH = 9 exhibited the highest total quantity of acidic sites and the highest apparent kinetic constant, with a value of 0.004 min−1. The different pH applied to the synthesis media of the copper nanoparticles determined the resultant copper dispersion on the ZrO2 support, providing active domains for glycerol conversion.

Synthesis of Copper Nanoparticles by a Chemical Reduction Method

2016 ◽  
Vol 23 (3) ◽  
pp. 228-234
Author(s):  
Min Woo Choi ◽  
◽  
Min Hwan Bae ◽  
Jung-Ho Ahn
Keyword(s):  
Copper Nanoparticles ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method

scholarly journals FusariumAntifungal Activities of Copper Nanoparticles Synthesized by a Chemical Reduction Method

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Pham Van Viet ◽  
Hai Thi Nguyen ◽  
Thi Minh Cao ◽  
Le Van Hieu
Keyword(s):  
Copper Nanoparticles ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Fungal Growth ◽  
Spherical Shape ◽  
Xrd Analysis ◽  
Chemical Reduction Method ◽  
Transmission Electron ◽  
Ft Ir ◽  
Average Size

We report on the process of synthesizing copper nanoparticles (Cu Nps) for a short reactive time by chemical reduction method with a support of CTAB reductive agent. Their properties were determined by ultraviolet-visible (UV-Vis) absorption spectrum, the X-ray (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), and Transmission Electron Microscopy (TEM) images. The antifungal activity of Cu Nps was evaluated by testing againstFusariumsp. The Cu Nps were obtained with the average size in the range of 20–50 nm having spherical shape. The survey shows that when Cu Nps were used at 450 ppm concentration in 9-day incubation, 93.98% of fungal growth was inhibited.

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