Selective etching of gold nanorods by ferric chloride at room temperature

CrystEngComm ◽  
2009 ◽  
Vol 11 (12) ◽  
pp. 2797 ◽  
Author(s):  
Renxian Zou ◽  
Xia Guo ◽  
Jian Yang ◽  
Dandan Li ◽  
Feng Peng ◽  
...  
Keyword(s):  
Ferric Chloride ◽  
Gold Nanorods ◽  
Room Temperature ◽  
Selective Etching

Thiol-mediated etching of gold nanorods as a neoteric strategy for room-temperature and multicolor detection of nitrite and nitrate

2021 ◽  
Author(s):  
Marzieh Sepahvand ◽  
Forough Ghasemi ◽  
Hossein Mirseyed Hosseini
Keyword(s):  
Human Health ◽  
Gold Nanorods ◽  
Room Temperature ◽  
Scientific Communities ◽  
Negative Impacts ◽  
Living Organisms

The excessive presence of nitrite and nitrate in the environmental matrixes has raised concerns among the scientific communities due to their negative impacts on human health and living organisms. Considering...

Selective Etching of Pressure-Crystallized Bisphenol-A Polycarbonate by Dimethylacetamide at Room Temperature

2012 ◽  
Vol 430-432 ◽  
pp. 66-69 ◽  
Author(s):  
Jun Lu ◽  
Rui Huang
Keyword(s):  
Bisphenol A ◽  
Room Temperature ◽  
Hierarchical Structures ◽  
Hydrophobic Surface ◽  
Dioctyl Phthalate ◽  
Selective Etching ◽  
Etching Process ◽  
Bisphenol A Polycarbonate ◽  
Etching Technique ◽  
Fracture Surfaces

The high-pressure crystallized bisphenol-A polycarbonate (BAPC) and BAPC / dioctyl phthalate (DOP) blend samples were prepared in a piston-cylinder apparatus, and the recovered specimens were investigated using scanning electron microscopy (SEM). As for the fracture surfaces without etching technique applied, the detailed information of the crystal morphologies of BAPC was not shown, though the outlines of such aggregations as spherulites and cylindrulite were still exposed due to the high-temperature degradation during the long time crystallization. However, the delicate internal structures of these aggregates were revealed clearly by the introduction of a facile etching method. The used etchant, dimethylacetamide, was capable of dissolving only amorphous, but not crystalline BAPC at room temperature. With the employed selective etching technique, BAPC spherulites with fine structures and different characteristics were observed. Spatial dendrites of the polymer were also disclosed in BAPC samples plasticized with DOP after a deep etching process. Furthermore, by controlling the etching process, unique hierarchical structures, composed of nano-structured micrometer-sized crystalline entities of BAPC, was created on the fracture surfaces. The study presented here suggested that selective etching is a more effective route to reveal the inner structures of polymer crystals, as well as to fabricate new surface active materials, such as a super-hydrophobic surface with self-cleaning effect.

A STUDY OF SOME FACTORS INFLUENCING THE ACTIVITY OF ALUMINUM AND FERRIC CHLORIDES IN THE FRIEDEL AND CRAFTS REACTION

1929 ◽  
Vol 1 (5) ◽  
pp. 400-404 ◽  
Author(s):  
M. C. Boswell ◽  
R. R. McLaughlin
Keyword(s):  
Hydrogen Chloride ◽  
Ferric Chloride ◽  
Aluminum Chloride ◽  
Room Temperature ◽  
Pure Aluminum ◽  
Striking Result ◽  
Adsorbed Gas ◽  
Factors Influencing

In the preparation of aluminum chloride by the action of hydrogen chloride on the metal, hydrogen chloride is adsorbed and can be recovered to the extent of about 9 cc. per gram. After sublimation in nitrogen and re-sublimation in hydrogen chloride, however, the amount of adsorption is smaller and irregular. The adsorbed gas is not removed by a stream of nitrogen at room temperature. The activities in the Friedel and Crafts reaction of various preparations of aluminum chloride and of ferric chloride and of mixtures of these were determined; the order of decreasing activity was found to be as follows: a mixture of aluminum chloride and ferric chloride, aluminum chloride made by the action of hydrogen chloride on aluminum, aluminum chloride made by the action of chlorine on aluminum, a mixture of aluminum chloride and partially reduced ferric chloride, ferric chloride, and partially reduced ferric chloride. The most striking result of the measurements is that although ferric chloride alone has an activity of only about one-third that of aluminum chloride, an approximately equimolecular mixture of the two has an activity somewhat greater than that of pure aluminum chloride.

All-thiophene-based conjugated porous organic polymers

2016 ◽  
Vol 7 (31) ◽  
pp. 5031-5038 ◽  
Author(s):  
Chao-Jing Sun ◽  
Peng-Fei Wang ◽  
Hua Wang ◽  
Bao-Hang Han
Keyword(s):  
Ferric Chloride ◽  
Oxidative Coupling ◽  
Room Temperature ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Coupling Polymerization

Novel all-thiophene-based conjugated porous organic polymers (ThPOP-1 and ThPOP-2) were synthesized through ferric chloride-catalyzed oxidative coupling polymerization at room temperature.

scholarly journals Corrosion inhibition of copper in ferric chloride solutions with organic inhibitors

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Omer Sisso ◽  
Snir Dor ◽  
David Eliyahu ◽  
Eyal Sabatani ◽  
Noam Eliaz
Keyword(s):  
Ferric Chloride ◽  
Room Temperature ◽  
Electrochemical Sensors ◽  
Electrochemical Techniques ◽  
Corrosion Process ◽  
Inhibition Mechanism ◽  
Copper Corrosion ◽  
Modified Surfaces ◽  
Different Temperatures ◽  
Organic Inhibitors

AbstractFerric chloride (FeCl3) has widespread use as an etchant in the PCB industry and for photochemical machining. Although the corrosion process of copper in FeCl3 is well known, the use of organic inhibitors of copper corrosion in FeCl3 solutions has not been reported. Such inhibition may allow microfabrication of special PCB designs and electrochemical sensors. Here, we investigate the inhibition of copper corrosion by FeCl3 (0.10 or 2.46 M) solutions with organic inhibitors. The most promising inhibitors are identified, investigated in 0.01 M FeCl3 solution using electrochemical techniques at different temperatures and exposure times, and the modified surfaces of copper are characterized by a variety of techniques in order to determine the inhibition mechanism. 5-methyl-1H-benzotriazole (MBTA, 65 mM) and 1H-benzotriazole (BTA, 65 mM) are found to be the most attractive inhibitors, with inhibition efficiencies between 96.5% and 99.5% at room temperature, depending on the exposure time and the measurement technique.

Highly sensitive photometric determination of cyanide based on selective etching of gold nanorods

2016 ◽  
Vol 183 (11) ◽  
pp. 3035-3041 ◽  
Author(s):  
Sujin Lee ◽  
Yun-Sik Nam ◽  
Sung-Hee Choi ◽  
Yeonhee Lee ◽  
Kang-Bong Lee
Keyword(s):  
Gold Nanorods ◽  
Photometric Determination ◽  
Selective Etching ◽  
Highly Sensitive

Non-aggregation based label free colorimetric sensor for the detection of Cr (VI) based on selective etching of gold nanorods

2011 ◽  
Vol 155 (2) ◽  
pp. 817-822 ◽  
Author(s):  
Fei-Ming Li ◽  
Jia-Ming Liu ◽  
Xin-Xing Wang ◽  
Li-Ping Lin ◽  
Wen-Lian Cai ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Colorimetric Sensor ◽  
Selective Etching ◽  
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