نتایج جستجو برای: nickel nanoparticle
تعداد نتایج: 64614 فیلتر نتایج به سال:
Nickel is a well-known catalyst in hydrogenation and dehydrogenation reactions. It currently used industrial processes as homogenous heterogeneous catalyst. However, to reduce the cost increase efficiency of catalytic processes, development single-atom catalysts (SACs) seems promising. Some SACs have already shown increased activity stability compared nanoparticle catalysts. From year year, num...
This paper reveals the results of metallic-based nanoparticle's effect on performance, emission, and vibration a diesel engine. Various metal-based nanoparticles such as Nickel (II) nitrate hexahydrate (Ni(NO3)2.6H2O), Silver (AgNO3), Manganese hydrate (Mn(NO3)2.xH2O) were chosen fuel additives into dosage with 25 50 ppm. In experimental tests, to identify combined silver manganese nickel, was ...
Recently, the development of nanoparticle nickel oxide has increased due to their potential application such as biosensors, catalysts, solar cells, supercapacitors, and batteries. In this work, addition CTAB for synthesis using electrolysis was investigated. The plates were used anode cathode in process. process operated at a constant voltage 60 V 30 minutes. XRD result showed conformity with N...
In order to investigate whether or not dispersed nanoparticles have an effect of inflammation and fibrosis on animals, we developed a nanoparticle generation system and examined the gene expression of matrix metalloproteinase (MMP) and tissue inhibitor matrix proteinase (TIMP) in rat lung containing inhaled nickel oxide (NiO) or titanium dioxide (TiO(2)) nanoparticles. In both experiments, Wist...
Microfluidic separation of magnetic particles is based on their capture by magnetized microcollectors while the suspending fluid flows past the microcollectors inside a microchannel. Separation of nanoparticles is often challenging because of strong Brownian motion. Low capture efficiency of nanoparticles limits their applications in bioanalysis. However, at some conditions, magnetic nanopartic...
Ni-based catalysts supported on alumina derived from the pseudo-boehmite prepared by impregnation method were employed for catalytic dry reforming of methane reaction at temperature 550–750 °C. The effect calcination physicochemical properties such as Ni dispersion, reduction degree, nickel crystallite sizes, and metal–support interaction was investigated. characterization results show that inc...
در اولین مطالعه، الکترود سرامیکی کربن بهینه شده با نانوذرات نیکل هگزاسیانوفرات تهیه شد. این الکترود حساسیت خوبی در مقابل اکسایش هیدرازین از خود نشان داد. مکانیسم اکسایش هیدرازین روی سطح این الکترود مطالعه شد و تعداد کل الکترونهای دخیل در واکنش اکسایش ـ کاهش محاسبه گردید. حد تشخیص این الکترود 8 میکرومولار و انحراف استاندارد نسبی آن برای 13 اندازه گیری مستقل معادل 77/5 درصد محاسبه گردید. نسبت به ...
Ni/NiO nanopowders have been prepared by using thermal decomposition of aqua solutions of nickel acetate ammine complexes in air at the annealing temperature range of 300°C to 500°C, time of decomposition from 30 to 180 min, and ammonia content in initial complex 3.6 to 9.55 mol/mol Ni(2+). Chemical composition of obtained powders has been characterized by chemical and thermal analysis. Phase a...
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