American Scientific Publishers
1533-4880
0000-0000
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Các bài báo tiêu biểu
A portable device based on the interrupter technique to measure bronchodilator response in schoolchildren
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Environmental and colour optimisation of mineraliser addition in synthesis of iron zircon ceramic pigment
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Biosynthesis of Silver Nanoparticles Using <I>Moringa oleifera</I> Leaf Extract and Its Application to Optical Limiting
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A Comparative Study of the Catalytic Performance of Pt-Based Bi and Trimetallic Nanocatalysts Towards Methanol, Ethanol, Ethylene Glycol, and Glycerol Electro-Oxidation Carbon-supported platinum is used as an anode and cathode electrocatalyst in low-temperature fuel cells fueled with low-molecular-weight alcohols in fuel cells. The cost of Pt and its low activity towards the complete oxidation of these fuels are significant barriers to the widespread
use of these types of fuel cells. Here, we report on the development of PtRhNi nanocatalysts supported on carbon made using a reduction chemistry method with different atomic rates. The catalytic activity of the developed catalysts towards the electro-oxidation of methanol, ethanol, ethylene
glycol, and glycerol in acidic media was studied. The obtained catalysts performances were compared with both commercial Pt/C and binary Pt75 Ni25 /C catalyst. The nanostructures were characterized, employing inductively coupled plasma optical emission spectrometer, X-ray
diffraction, scanning transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The binary catalyst presents a mean particle size of around 2 nm. Whereas the ternary catalysts present particles of similar size and with some large alloy and core–shell structures. The
alcohol oxidation onset potential and the current density measured after 3600 s of chronoamperometry were used to classify the catalytic activity of the catalysts towards the oxidation of methanol, ethanol, ethylene glycol, and glycerol. The best PtRhNi/C catalyst composition (i.e., Pt43 Rh43 Ni14 /C)
presented the highest activity for alcohols oxidation compared with all catalysts studied, indicating the proper tuning composition influence in the catalytic activity. The enhanced activity of Pt43 Rh43 Ni14 /C can be attributed to the synergic effect of trimetallic
compounds, Pt, Ni, and Rh.
Tập 20 Số 10 - Trang 6274-6285 - 2020
Automobile dependence in Bangkok:: an international comparison with implications for planning policies
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Synthesis and Characterization of CuO Rods for Enhanced Visible Light Driven Dye Degradation Here, we report simple and efficient method to synthesize CuO rods using copper acetate, hexamethylenetetramine (HMTA) and sodium hydroxide (NaOH) solutions via hydrothermal process followed by calcination. The Field emission scanning electron microscopy images revealed that synthesized
CuO rods were 2–4μ m thick with several micrometers long and grown into high density. The as-synthesized CuO rods were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-visible spectroscopy and Energy dispersive X-ray analysis (EDS)
which confirmed the formation of highly crystalline, single phase pure CuO rods with monoclinic structures. The photocatalytic capability of synthesized CuO rods was executed by monitoring the degradation of methylene blue (MB) dye under visible light illumination. The results showed MB dye
degraded about ~70% in just 100 min and followed first order reaction kinetics with rate constant k = 0.01123 mint.1 and R2 = 0.9880.
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Total Shoulder Replacement In Rheumatoid Disease: 7- To 13-year Follow-up Of 37 Joints
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Nanodispersion of Single-Walled Carbon Nanotubes Using Dichloroethane
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Development of In–Bi–Sn Composite Metal Inks with Modified Properties for 3D Printed Electronics
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Shape Dependence of Gold Nanoparticles on <i>In Vivo</i> Acute Toxicological Effects and Biodistribution
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