scholarly journals Spectroscopy of Palladium Nanoparticle Synthesis: Tailoring Nanoparticle Growth Parameters for Hydrogen Storage

MRS Advances ◽  
2020 ◽  
Vol 5 (40-41) ◽  
pp. 2085-2090
Author(s):  
Amanda L. Houk ◽  
Levi R. Houk
Keyword(s):  
Hydrogen Storage ◽  
Palladium Nanoparticles ◽  
Growth Parameters ◽  
Spectroscopic Method ◽  
Nanoparticle Synthesis ◽  
Palladium Nanoparticle ◽  
Nanoparticle Growth ◽  
Vis Spectroscopy ◽  
Ultimate Control

ABSTRACTUsing palladium for hydrogen storage requires palladium (Pd) particles exhibiting specific parameters, including surface area, particle size, and particle shape, with increased interest in palladium nanoparticles (Pd NPs). In order to routinely monitor the synthesis of these particles a spectroscopic method is being developed using infrared (IR), Raman, and UV-Vis spectroscopy. By monitoring the production of Pd NPs, the growth of the NPs can be controlled to ensure quality of the product to match the desired finished particle specifications. For the reaction presented, the conversion of the intermediate tetraamminepalladium(II) chloride (PTC) to diamminepalladium(II) chloride (PDC) can influence the Pd NPs properties. This study is first being developed in lab bench scale quantities to allow ultimate control of the Pd NPs.

scholarly journals Growth parameters, behavior, and meat and ham quality of heavy pigs subjected to photoperiods of different duration

2015 ◽  
Vol 93 (2) ◽  
pp. 758-766 ◽  
Author(s):  
G. Martelli ◽  
E. Nannoni ◽  
M. Grandi ◽  
A. Bonaldo ◽  
G. Zaghini ◽  
...  
Keyword(s):  
Growth Parameters

scholarly journals ASSESSMENT OF COMPOST QUALITY OF SERICULTURE WASTE ON THE GROWTH OF Anogeissus leiocarpus USING TWO COMPOSTING METHODS

2020 ◽  
Vol 1 (1) ◽  
pp. 32-46
Author(s):  
C. Kambai ◽  
R. O. Olatunji ◽  
M. J. Francis
Keyword(s):  
Mineral Composition ◽  
Growth Parameters ◽  
Germination Rate ◽  
Germination Percentage ◽  
Proximate Analysis ◽  
Management Problem ◽  
Higher Plant ◽  
Compost Quality ◽  
Anogeissus Leiocarpus

This study investigated the compost quality of sericulture waste on the growth of Anogeissus leiocarpus using two composting methods. The two-method adopted were M1 (pile method) and M2 (bin method). Sericulture waste which includes mulberry leaves and silkworm excreta were air dried for 24hours, measured (1 kg) and set in layers for both methods adopted. Samples of compost from each method were taken before planting to the laboratory for proximate analysis. Descriptive statistics and analysis of variance (ANOVA) were used to analyze the data obtained. Anogeissus leiocarpus seeds were soaked for 10 minutes at 35oC and at 9.5oC for 24 hours to enhance the breaking of its dormancy. Anogeissus leiocarpus seeds was planted using sericulture compost from both adopted methods. Result shows that M1 had the highest mineral composition. M1 recorded the highest (N %) with the value of 0.93%; (P %) with 0.089%; (K %) with 0.58%; (Ca %) with the value of 1.78% and (Mg %) with the value of 0.72% while M2 had a lower mineral composition. The result obtained for the early growth parameters shows that M1 had a higher plant height and stem girth which was significantly different from M2, the mixture of the two compost had the highest leaf count which was also significant while the control recorded the lowest value for all the parameters assessed. This result suggests that pile composting method is the best method for composting sericulture waste and can be used as a good and preferable alternative for inorganic manure in raising seedlings and trees species.  Adopting the use of sericulture waste as compost will help in reducing the waste management problem, enhance economic use of farm waste and also help to ease the low germination rate and germination percentage of Anogeissus leiocarpus. Kambai, C. | Department of Forestry Technology, Federal College of Forestry, Jos, Plateau state, Nigeria

scholarly journals Growth performance and nutritional quality of selected vegetables in response to organic and inorganic fertilizers under low and high irradiance

2021 ◽  
pp. 17-27
Author(s):  
L. T. Olaokiki ◽  
S. A. Adejumo
Keyword(s):  
Leaf Area ◽  
Open Field ◽  
Nutritional Quality ◽  
Growth Parameters ◽  
Soil Amendments ◽  
Number Of Leaves ◽  
Growing Conditions ◽  
Screen House ◽  
Better Than

Vegetables form major part of human dietary/nutritional needs. It provides the necessary vitamins and minerals as well as antioxidants to boost immunity. Different vegetables however have different benefits and require different growing conditions. This study investigated the effect of two growing conditions (Screen-house and open field) and soil amendments; Mexican sunflower compost (MSC; applied at 0, 5, 10 t/ha) and NPK 15:15:15 (applied at 0, 50 and 100 kg N/ha) on the growth performance, yield, and nutritional quality of five selected vegetables (Amaranthus cruentus, Celosia. argentea, Solanum macrocarpon, Solanum nigrum and Solanum incanum). Each treatment was replicated three times and experiment arranged in completely randomized design, Compost was applied a week before seed sowing vegetables grown in the screen-house generally performed better than the open field in terms of leaf area and chlorophyll content. The response however varied based on the vegetable and the soil amendments. Solanum species, performed better than Amaranthus under screen-house than open field. Chlorophyll in the leaf responded positively to NPK fertilizer under screen-house conditions while growth parameters such as plant height, stem girth, number of leaves under screen-house and field conditions varied depending on the vegetables. The number of leaves and leaf area increased with soil amendments. Moisture, crude protein and ash contents were reduced under open field compared to screen-house. The zinc and iron contents of the vegetable leaves showed that addition of compost was superior to NPK and screen-house better than open field. It can be concluded that vegetables grown in the screen-house performed better in their respective growth parameters than vegetables are grown under the open field.

scholarly journals Performing a catalysis reaction on filter paper: development of a metal palladium nanoparticle-based catalyst

2019 ◽  
Vol 1 (1) ◽  
pp. 342-346 ◽  
Author(s):  
Yili Zhao ◽  
Lei Liu ◽  
Daniel Shi ◽  
Xiangyang Shi ◽  
Mingwu Shen
Keyword(s):  
Filter Paper ◽  
Palladium Nanoparticles ◽  
High Performance ◽  
Palladium Nanoparticle ◽  
Catalytic Applications

Palladium nanoparticles can be facilely immobilized onto filter paper via mediation by polyethylenimine for high-performance catalytic applications.

scholarly journals Determination of the Effect of Humic Acid on Growth and Development Parameters of Parsley (Petroselinum sativum Hoffm.) Grown in Boron Soil

2018 ◽  
Vol 47 (1) ◽  
pp. 183-193 ◽  
Author(s):  
Tuncay TURSUN ◽  
Sener AKINCI ◽  
Esin BOZKURT
Keyword(s):  
Humic Acid ◽  
Growth Parameters ◽  
Dry Weight ◽  
High Yield ◽  
Yield And Quality ◽  
Icp Ms ◽  
Growth Analyses ◽  
Nutrient Solutions

Boron is an important micronutrient, required for all plant growth, and critical for high yield and quality of crops. The aim of the present research was to determine the effects of boron on pot-grown parsley (Petroselinum sativum Hoffm.). The experimental design consisted of four treatments using Hoagland-Arnon (1950) nutrient solutions with two different boron concentrations (B1 - 15 ppm and B2 - 150 ppm), each with and without 10 ml humic acid addition (HB1 and HB2), and controls with full strength Hoagland-Arnon solutions. Growth analyses of the parsley revealed that 15 ppm boron application caused an increase in root length leaf fresh and dry weight root fresh and dry weight and leaf area compared to control values. 150 ppm B (B2) concentration decreased all growth parameters compared to controls. The two humic acid treatments (HB1 and HB2) did not increase any of those growth parameters either in controls (C) or in the two boron (B1 and B2) concentrations. Analysis by (ICP-MS) revealed that B content in the leaves increased gradually in B1 and B2, as well as in both humic treatments where in HB2 it increased to 99.38% compared to B1. In the leaves, Mn, Zn and Fe contents behaved the same as B, increasing in all treatments, with the amounts in HB2 being significantly greater than in C, B1 and B2 leaves.

Plasmonic Coupling of One-Dimensional Palladium Nanoparticle Chains

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050060
Author(s):  
Salem Marhaba ◽  
Samaya El Samad
Keyword(s):  
Palladium Nanoparticles ◽  
Near Infrared ◽  
Localized Surface Plasmon ◽  
Spectral Amplitude ◽  
Ultraviolet Region ◽  
Spectral Position ◽  
Palladium Nanoparticle ◽  
Extinction Cross Section ◽  
Plasmonic Coupling ◽  
Nanoparticle Chains

In this paper, we investigate the plasmonic coupling effects on the localized surface plasmon resonances (LSPRs) of palladium nanoparticle chains. We show the transmission electron microscopy (TEM) images and the extinction cross-section spectra of near-contact palladium nanoparticle chains from monomer to pentamer. The extinction spectra of chains nanoparticles were measured by far-field polarization spectroscopy over a large spectral range (ultraviolet, visible and near-infrared) and compared with numerical calculations based on finite element method (FEM). For single palladium nanoparticle, the LSPR phenomenon appears in ultraviolet region. By addition of palladium nanoparticles to the chain, we observe a tunable red-shifting on the spectral position due to plasmonic coupling between palladium nanoparticles and a systematic spectral amplitude enhancement with the appearance of new modes of resonance.

Growth and processing of heteroepitaxial 3C-SiC films for electronic devices applications

2012 ◽  
Vol 1433 ◽  
Author(s):  
A. Severino ◽  
M. Mauceri ◽  
R. Anzalone ◽  
A. Canino ◽  
N. Piluso ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Low Cost ◽  
Electronic Devices ◽  
Young Modulus ◽  
Interesting Property ◽  
Large Area ◽  
Si Substrates ◽  
Application Fields ◽  
Sic Films

ABSTRACT3C-SiC is very attractive due the chance to be grown on large-area, low-cost Si substrates. Moreover, 3C-SiC has higher channel electron mobility with respect to 4H-SiC, interesting property in MOSFET applications. Other application fields where 3C-SiC can play a significant role are solar cells and MEMS-based sensors. In this work, we present a general overview of 3C-SiC growth on Si substrate. The influence of growth parameters, such as the growth rate, on the crystal quality of 3C-SiC films is discussed. The main issue for 3C-SiC development is the reduction of the stacking fault density, which shows an exponential decreasing trend with the film thickness tending to a saturation value of about 1000 cm-1. Some aspect of processing will be also faced with the realization of cantilever for Young modulus calculations and the implantation of Al ions for the study of damaging and recovery of the 3C-SiC crystal.

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