نتایج جستجو برای: nano zero valent copper
تعداد نتایج: 283483 فیلتر نتایج به سال:
Low-dose laser sintering of Cu nanoparticles on the ceramic substrate during ink-jet interconnection
The deposition of nano-size copper particles was carried out by means of ink-jet printing on the ceramic substrate (silicon and faience) using Nd +3 :YAG laser. Glycerin and aqueous based nano copper inks were prepared and were inkjetted in this study. The sintered copper film had a grainy structure with neck-like junctions. The microstructure and soldering properties were examined using XRD, S...
The uptake of REEs was investigated using nano-zero valent iron (nZVI) and alumina-supported nZVI (AlnZVI). The results indicated fast uptake, with saturation approached within 10 min of contact between solutions and solids. Upon using nZVI, the uptake of REEs seemed to be quantitative over the studied range of concentration; 1.0–100.0 mg L . When Al-nZVI was used, complete removal was achieved...
Zero-valent aluminum based trimetallic particles comprising a combination of catalytically effective amounts (1 wt%) of palladium and zero-valent iron on the aluminum surface were synthesized and tested for the dechlorination of chlorinated methanes in batch reactors. XRD analysis indicated the trimetallic particles present in zero-valent form of all three components. Trimetallic Pd/Fe/Al parti...
results: the lowest concentrations of nzvi that inhibited the visible growth (mic) of e. amylovora, x. oryzae, b. cereus and streptomyces spp. were 625, 550, 1250 and 1280 ppm, respectively. the minimum bactericidal concentration (mbc) for e. amylovora and x. oryzae were 10,000 and 5,000 ppm of nzvi, respectively. mbc was not observed for the gram positive bacteria. no bacteriostatic and bacter...
Developing micro- and nanomaterials for environmental pollution remediation is currently a pertinent topic. Among the plethora of strategies, designing supported nanocatalysts degradation pollutants has achieved prominence. In this context, we are addressing one UN Sustainable Development Goals by valorizing agrowaste as source biochar, which serves support bimetallic nanocatalysts. Herein, oli...
A copper/low-density polyethylene nanocomposite (nano-Cu/LDPE), a potential intrauterine device component material, has been developed from our research. A logical extension of our previous work, this study was conducted to investigate the expression of plasminogen activator inhibitor 1 (PAI-1), substance P (SP), and substance P receptor (SP-R) in the endometrium of Sprague Dawley rats, New Zea...
Zero-valent iron nanoparticles are used for the degradation of organic compounds and the immobilization of metals and metalloids. The lack of information on the effect of nZVI in freshwater system necessitated the risk assessment of zero-valent iron nanoparticles in lake water environment. The present study deals with the stability and fate of synthesized zero-valent iron nanoparticles in the u...
There is a controversial debate about the mechanism of the Cu(0)-catalyzed radical polymerization. Herein, a comparative analysis of a series of reactions catalyzed by different valent copper shows that the induction period and the subsequent autoaccelerated polymerization of a Cu(0)/Me6TREN-catalyzed system originate from the accumulation of soluble copper species, and Cu(I) is still a powerfu...
In this study, microcrystalline cellulose (MCC) was modified to oxidized (OC), 6-deoxycellulose hydrazide and (N,N-diethyl)amine (MCC-Hyd MCC-DEM) derivatives employed as supporting material for the synthesis of copper nanoparticles (NPs). Copper ions from aqueous solution were adsorbed then reduced zero valent (ZVC) NPs using sodium borohydride on films prepared derivatives. The characterizati...
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