Interaction between Pd and Cu nanoparticles in bimetallic CuPd  nanoparticles and its impact on oxidation of 1,2-propanediol to aliphatic acids

Production of plant products, including juices around the world increases continuously. In the fruit and vegetable juices contain a significant amount of monosaccharides (glucose and fructose), organic acids, vitamins, phenolic compounds, mineral substances and other biologically active components that determine the nutritional and dietary value. For the prevention of various diseases associated with impaired metabolic processes, we developed a new technology of preparation of food by blending juice of pumpkin, quince and persimmon. Thus prepared organic blended juice contains a substantial amount of free glucose and fructose, different phenolic compounds, a sufficient amount of organic acids, mineral elements, including iodine and other components that determine its nutritional and biological value. In prepared juices were evaluated the quantitative indicators of β-carotene, vitamin C, glucose and fructose, sucrose, starch, pectin substances. Also in the atomic absorbtion spectrometer Analyst 400 (PerkinElmer, USA) was analyzed content of the organic acids and phenolic compounds. Prepared juices were tested in accordance with 10 point scoring scale. It is established that all juices contain a sufficient amount of the minerals. In pumpkin and quince juices not contain iodine while it presents in sufficient amount in persimmon juice that’s why in the blended juice mineral in addition to mineral elements iodine are contained. In pumpkin and persimmon aliphatic acids are contained in small amount. For this reason during the blending process was used quince juice which is rich in aliphatic acids. The blended juice is light straw color, with delicious flavor, a slight astringent property and a balanced taste.

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Kinetics of complex heterogeneous catalytic reactions. II. Kinetics of ketonisation of aliphatic acids and their mixtures on thoria

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19683528 ◽

1968 ◽

Vol 33 (11) ◽

pp. 3528-3540 ◽

Cited By ~ 2

Author(s):

L. Rybáček ◽

K. Setínek

Keyword(s):

Catalytic Reactions ◽

Aliphatic Acids ◽

Heterogeneous Catalytic ◽

Kinetics Of

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The Antifungal Activity of Some Aliphatic and Aromatic Acids

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19921134 ◽

1992 ◽

Vol 57 (5) ◽

pp. 1134-1142 ◽

Cited By ~ 9

Author(s):

Bohuslav Rittich ◽

Marta Pirochtová ◽

Jiří Hřib ◽

Kamila Jurtíková ◽

Petr Doležal

Keyword(s):

Biological Activities ◽

Pure Water ◽

Water System ◽

Penicillium Expansum ◽

Aromatic Acids ◽

Antifungal Activities ◽

Aliphatic Acids ◽

Significant Relationships ◽

Physico Chemical ◽

Connectivity Indices

The present paper deals with the relationship between biological activities of some aliphatic and aromatic acids and their physico-chemical parameters expressing the influence of hydrophobic factors. The test strain in the biotest of growth inhibition was the fungus Fusarium moniliforme CCMF-180 and Penicillium expansum CCMF-576. Significant relationship between antifungal activities of un-ionized form of aliphatic acids and their capacity factors (log k'0) extrapolated to pure water, partition coefficients determined in 1-octanol-water system (log Poct) and the first order of molecular connectivity indices (1χ) were calculated. The ionized form of aliphatic acids were antifungally active too. For benzoic acids significant relationships between antifungal activities and capacity factors of anionic form (log k'ia) were calculated.

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Modulation in Ru and Cu nanoparticles contents over CuAlPO-5 in synergistic enhancement in the selective reduction and oxidation of biomass-derived furan based alcohols and carbonyls

Catalysis Science & Technology ◽

10.1039/d1cy00593f ◽

2021 ◽

Author(s):

Abhinav Kumar ◽

Rajaram Bal ◽

Rajendra Srivastava

Keyword(s):

Selective Reduction ◽

Value Added ◽

Cu Nanoparticles ◽

Platform Chemicals ◽

Synergistic Enhancement ◽

Reduction And Oxidation ◽

Significant Attention ◽

Lignocellulose Biomass

Furfural (FAL) and 5-hydroxymethylfurfural (HMF) are important and sustainable platform chemicals. They are produced from lignocellulose biomass and attract significant attention as precursors for producing value-added chemicals and fuels. The...

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Effective Chromium Adsorption From Aqueous Solutions and Tannery Wastewater Using Bimetallic Fe/Cu Nanoparticles: Response Surface Methodology and Artificial Neural Network

Air Soil and Water Research ◽

10.1177/11786221211028162 ◽

2021 ◽

Vol 14 ◽

pp. 117862212110281

Author(s):

Ahmed S. Mahmoud ◽

Nouran Y. Mohamed ◽

Mohamed K. Mostafa ◽

Mohamed S. Mahmoud

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Industrial Effluent ◽

Oxygen Demand ◽

Operating Conditions ◽

Tannery Wastewater ◽

P Value ◽

Cu Nanoparticles ◽

Artificial Neural ◽

Cr Removal

Tannery industrial effluent is one of the most difficult wastewater types since it contains a huge concentration of organic, oil, and chrome (Cr). This study successfully prepared and applied bimetallic Fe/Cu nanoparticles (Fe/Cu NPs) for chrome removal. In the beginning, the Fe/Cu NPs was equilibrated by pure aqueous chrome solution at different operating conditions (lab scale), then the nanomaterial was applied in semi full scale. The operating conditions indicated that Fe/Cu NPs was able to adsorb 68% and 33% of Cr for initial concentrations of 1 and 9 mg/L, respectively. The removal occurred at pH 3 using 0.6 g/L Fe/Cu dose, stirring rate 200 r/min, contact time 20 min, and constant temperature 20 ± 2ºC. Adsorption isotherm proved that the Khan model is the most appropriate model for Cr removal using Fe/Cu NPs with the minimum error sum of 0.199. According to khan, the maximum uptakes was 20.5 mg/g Cr. Kinetic results proved that Pseudo Second Order mechanism with the least possible error of 0.098 indicated that the adsorption mechanism is chemisorption. Response surface methodology (RSM) equation was developed with a significant p-value = 0 to label the relations between Cr removal and different experimental parameters. Artificial neural networks (ANNs) were performed with a structure of 5-4-1 and the achieved results indicated that the effect of the dose is the most dominated variable for Cr removal. Application of Fe/Cu NPs in real tannery wastewater showed its ability to degrade and disinfect organic and biological contaminants in addition to chrome adsorption. The reduction in chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), total phosphorus (TP), total nitrogen (TN), Cr, hydrogen sulfide (H2S), and oil reached 61.5%, 49.5%, 44.8%, 100%, 38.9%, 96.3%, 88.7%, and 29.4%, respectively.

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Molecular dynamics simulation of effect of temperature on Cu nanoparticles agglomeration of nanofluids

Journal of Nanoparticle Research ◽

10.1007/s11051-020-05131-y ◽

2021 ◽

Vol 23 (1) ◽

Author(s):

Jingtao Wang ◽

Zhiwei Li ◽

Yuting Jia ◽

Bingbing Wang ◽

Zhiming Xu

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulation ◽

Dynamics Simulation ◽

Effect Of Temperature ◽

Cu Nanoparticles

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Syntheses of Cyclic Anhydrides via Ligand‐Enabled C−H Carbonylation of Simple Aliphatic Acids

Angewandte Chemie ◽

10.1002/ange.202104645 ◽

2021 ◽

Author(s):

Jin-Quan Yu ◽

Zhe Zhuang ◽

Alastair Neale Herron

Keyword(s):

Aliphatic Acids ◽

Cyclic Anhydrides

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Facile Synthesis of Carboxymethyl Cellulose Coated Core/Shell SiO2@Cu Nanoparticles and Their Antifungal Activity against Phytophthora capsici

Polymers ◽

10.3390/polym13060888 ◽

2021 ◽

Vol 13 (6) ◽

pp. 888

Author(s):

Nguyen Thi Thanh Hai ◽

Nguyen Duc Cuong ◽

Nguyen Tran Quyen ◽

Nguyen Quoc Hien ◽

Tran Thi Dieu Hien ◽

...

Keyword(s):

Antifungal Activity ◽

Carboxymethyl Cellulose ◽

Chemical Reduction ◽

Low Cost ◽

Phytophthora Capsici ◽

Reduction Process ◽

Spherical Shape ◽

Core Shell ◽

Cu Nanoparticles ◽

Average Size

Cu nanoparticles are a potential material for creating novel alternative antimicrobial products due to their unique antibacterial/antifungal properties, stability, dispersion, low cost and abundance as well as being economical and ecofriendly. In this work, carboxymethyl cellulose coated core/shell SiO2@Cu nanoparticles (NPs) were synthesized by a simple and effective chemical reduction process. The initial SiO2 NPs, which were prepared from rice husk ash, were coated by a copper ultrathin film using hydrazine and carboxymethyl cellulose (CMC) as reducing agent and stable agent, respectively. The core/shell SiO2@Cu nanoparticles with an average size of ~19 nm were surrounded by CMC. The results indicated that the SiO2@Cu@CMC suspension was a homogenous morphology with a spherical shape, regular dispersion and good stability. Furthermore, the multicomponent SiO2@Cu@CMC NPs showed good antifungal activity against Phytophthora capsici (P. capsici). The novel Cu NPs-based multicomponent suspension is a key compound in the development of new fungicides for the control of the Phytophthora disease.

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