Effect of zinc particle mixing on properties of copper–nanoparticle/bismuth–tin solder hybrid joints

Background: In the recent years, the green synthesis of nanoparticles has taken a lead role over the conventional chemical and physical approach due to its non-toxic, cost effective parameters and has found its place in various applications. Objectives: The major objectives of this study was to synthesise and characterize the copper nanoparticles using the rose extract at different set of conditions and analyse these nanoparticles as a source of dye degradation agent under sunlight conditions. Methods: Present study was conducted with the aim to synthesis the copper nanoparticle using the rose petal extract. The components present the in the extract act as the reduction and stabilization agents for the synthesis of CuNPs. The synthesized nanoparticles were characterized by using UV-VIS, FTIR, XRD and SEM analysis. Photocatalytic degradation of two dyes (Malachite Green and Carbol fuchsin) was analysed using double beam spectroscopic analysis Results: UV-Vis analysis indicated the presence of a peak at around 630 nm. The FT-IR analysis indicated the involvement of various biomolecules during the synthesis of nanoparticles. The structure and the conformation was elucidated using XRD and SEM showed the agglomerated form of the synthesized nanoparticles with the size range of about 60-90 nm. The synthesised copper nanoparticles was used for degradation of malachite green and carbol fuchsin dye using photocatalytic under sunlight irradiation. UV-Vis spectral analysis indicated that synthesised copper nanoparticle act more effective in degradation of malachite green (around 95%) whereas carbol fuchsin showed a maximum degradation by 52% therefore suggesting that CuNPs act as an efficient photo catalyst in dye degradation. Conclusion: The results obtained from this study indicates that rose extract has the potential of synthesis of copper nanoparticles which is non-toxic and convenient approach as compared to physical and chemical synthesis. These nanoparticles can be effectively employed as dye decolourization agents to treat industrial effluent and prevent the environmental pollution.

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Impact of microalgae culture conditions over the capacity of copper nanoparticle biosynthesis

Journal of Applied Phycology ◽

10.1007/s10811-019-1747-8 ◽

2019 ◽

Vol 31 (4) ◽

pp. 2437-2447 ◽

Cited By ~ 2

Author(s):

Gerardo Salas-Herrera ◽

Susana González-Morales ◽

Adalberto Benavides-Mendoza ◽

Adali O. Castañeda-Facio ◽

Fabián Fernández-Luqueño ◽

...

Keyword(s):

Culture Conditions ◽

Copper Nanoparticle ◽

Microalgae Culture ◽

Nanoparticle Biosynthesis

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Impact of the particle mixing state on the hygroscopicity of internally mixed sodium chloride-ammonium sulfate single droplets: A theoretical and experimental study

Physical Chemistry Chemical Physics ◽

10.1039/d1cp01574e ◽

2021 ◽

Author(s):

Yeny A. Tobon ◽

Danielle El Hajj ◽

Samantha Seng ◽

Ferdaous Bengrad ◽

Myriam Moreau ◽

...

Keyword(s):

Experimental Study ◽

Sodium Chloride ◽

Ammonium Sulfate ◽

Atmospheric Transport ◽

Sea Salt ◽

Main Constituent ◽

Sea Salt Aerosols ◽

Particle Mixing ◽

Secondary Aerosols ◽

Single Droplets

Sodium chloride (NaCl) is the main constituent of sea-salt aerosols. During atmospheric transport, sea-salt aerosols can interact with gases and other particles including secondary aerosols containing ammonium sulfate ((NH4)2SO4). This...

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Improved performance of a zinc–air fuel cell by coupling zinc particle fuel and flowing electrolyte

Journal of the Chinese Institute of Engineers ◽

10.1080/02533839.2021.1933601 ◽

2021 ◽

pp. 1-9

Author(s):

Nguyen Minh Khoa ◽

Thangavel Sangeetha ◽

Po-Tuan Chen ◽

Ting-Wei Hsu ◽

Wei-Mon Yan ◽

...

Keyword(s):

Fuel Cell ◽

Improved Performance ◽

Zinc Particle

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Investigation of joints from laser powder fusion processed and conventional material grades of 18MAR300 nickel maraging steel

Welding in the World ◽

10.1007/s40194-021-01096-1 ◽

2021 ◽

Author(s):

W. Tillmann ◽

L. Wojarski ◽

T. Henning

Keyword(s):

Tensile Strength ◽

Maraging Steel ◽

Solid Material ◽

High Volume ◽

Heat Treatment Condition ◽

Hybrid Joint ◽

Hybrid Joints ◽

Laser Systems ◽

Conventional Material ◽

The Individual

AbstractEven though the buildup rate of laser powder bed fusion processes (LPBF) has steadily increased in recent years by using more and more powerful laser systems, the production of large-volume parts is still extremely cost-intensive. Joining of an additively manufactured complex part to a high-volume part made of conventional material is a promising technology to enhance economics. Today, constructors have to select the most economical joining process with respect to the individual field of application. The aim of this research was to investigate the hybrid joint properties of LBPF and conventionally casted 18MAR300 nickel maraging steel depending on the manufacturing process and the heat treatment condition. Therefore, the microstructure and the strength of the hybrid joints manufactured by LPBF or vacuum brazing were examined and compared to solid material and joints of similar material. It was found that the vacuum-brazed hybrid joints using a 50.8-μm-thick AuNi18 foil provide a high tensile strength of 904 MPa which is sufficient for a broad field of application. Furthermore, the additively manufactured hybrid samples offered with 1998 MPa a tensile strength more than twice as high but showed a considerable impact of buildup failures to the strength in general.

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