Rosmarinus officinalis directed palladium nanoparticle synthesis: Investigation of potential anti-bacterial, anti-fungal and Mizoroki-Heck catalytic activities

2020 ◽  
Vol 31 (4) ◽  
pp. 1402-1411 ◽  
Author(s):  
Navid Rabiee ◽  
Mojtaba Bagherzadeh ◽  
Mahsa Kiani ◽  
Amir Mohammad Ghadiri
Keyword(s):  
Nanoparticle Synthesis ◽  
Rosmarinus Officinalis ◽  
Palladium Nanoparticle ◽  
Catalytic Activities ◽  
Anti Fungal

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 ‘Pre-optimization’ of the solvent of nanoparticle-synthesis for superior catalytic efficiency: A case study with Pd nanocrystals

2021 ◽  
Author(s):  
Lipipuspa Sahoo ◽  
Parmeet Kaur Dhindsa ◽  
Nihal C P ◽  
Ujjal K. Gautam
Keyword(s):  
Nanoparticle Synthesis ◽  
Catalytic Efficiency ◽  
Chemical Transformations ◽  
Catalytic Activities ◽  
Metal Nanocrystals ◽  
New Perspective

In view of a limited rationale available for designing metal nanocrystals (NCs) to achieve high catalytic activities across various chemical transformations, we offer a new perspective on the optimization of...

Green Pathways for Palladium Nanoparticle Synthesis: Application and Future Perspectives

2021 ◽  
pp. 303-328
Author(s):  
Arnab Ghosh ◽  
Rajeev V. Hegde ◽  
Sandeep Suryabhan Gholap ◽  
Siddappa A. Patil ◽  
Ramesh B. Dateer
Keyword(s):  
Nanoparticle Synthesis ◽  
Future Perspectives ◽  
Palladium Nanoparticle

Quantitative analysis of rosmarinic acid in Rosmarinus officinalis growing in Turkey by LC-MS/MS

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Altintas ◽  
F Göger ◽  
HG Duymuş ◽  
N Kırımer ◽  
KHC Başer
Keyword(s):  
Quantitative Analysis ◽  
Rosmarinic Acid ◽  
Rosmarinus Officinalis

In vitro anti-fungal activity of a plant-based ear gel and its essential oils

Planta Medica ◽  
2006 ◽  
Vol 72 (11) ◽  
Author(s):  
JK Ketzis ◽  
N Nolard ◽  
NS Ryder
Keyword(s):  
Essential Oils ◽  
Fungal Activity ◽  
Anti Fungal

FORMULADO DE ALECRIM NO CONTROLE DE ANTRACNOSE E CONSERVAÇÃO EM PÓS-COLHEITA DE BANANA NANICÃO

2019 ◽  
Vol 2 (2) ◽  
pp. 16
Author(s):  
Eloisa Lorenzetti ◽  
Dablieny Hellen Garcia Souza ◽  
Juliano Tartaro ◽  
José Renato Stangarlin ◽  
Gilberto Costa Braga
Keyword(s):  
Rosmarinus Officinalis ◽  
Rosmarinus Officinalis L ◽  
Colletotrichum Musae

A banana apresenta elevada suscetibilidade a doenças como as podridões que diminuem o tempo de prateleira do fruto. Uma das formas de controlar as doenças seria a utilização de métodos alternativos como os extratos de plantas medicinais. Assim, o objetivo deste estudo foi verificar a ação de formulados de alecrim (Rosmarinus officinalis L.) pó e líquido no controle de antracnose causada pelo fungo Colletotrichum musae (Berk & Curt.) Von Arx. e na maturação de banana ‘Nanicão’ em pós-colheita. Foram utilizadas as concentrações 0%; 0,25%; 0,5%; 1%; 1,5% e 2% do pó solúvel de extrato de alecrim diluído em água destilada, e as concentrações 0%; 0,5%; 1%; 2%; 4% e 6% do formulado aquoso contendo 21% de resíduo seco de alecrim diluído em água destilada. Foi realizada a mensuração da área de cada fruto e avaliada a severidade e a maturação a partir de porcentagem de área dos frutos, sendo os resultados utilizados para calcular a área abaixo da curva de progresso da doença (AACPD) e a porcentagem de maturação dos frutos. Realizou-se analise de regressão a partir dos dados obtidos e pode-se verificar que para o formulado de alecrim em pó a AACPD reduziu mais de 29% e para a maturação a redução foi de 21,72%. Para o formulado líquido a redução foi de 14,31% para AACPD e cerca de 10% para maturação. Assim, concluiu-se que houve eficiência por parte dos formulados de alecrim no controle da antracnose e no aumento da vida de prateleira da banana ‘Nanicão’.

Photocatalytic activity of TiO2 synthesized by anodization and anodic spark deposition

MRS Advances ◽  
2020 ◽  
Vol 5 (61) ◽  
pp. 3141-3152
Author(s):  
Alma C. Chávez-Mejía ◽  
Génesis Villegas-Suárez ◽  
Paloma I. Zaragoza-Sánchez ◽  
Rafael Magaña-López ◽  
Julio C. Morales-Mejía ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Surface Characteristics ◽  
Amorphous Solids ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalytic Activities ◽  
Anodic Spark Oxidation ◽  
Porous Surfaces ◽  
Scanning Electron

AbstractSeveral photocatalysts, based on titanium dioxide, were synthesized by spark anodization techniques and anodic spark oxidation. Photocatalytic activity was determined by methylene blue oxidation and the catalytic activities of the catalysts were evaluated after 70 hours of reaction. Scanning Electron Microscopy and X Ray Diffraction analysis were used to characterize the catalysts. The photocatalyst prepared with a solution of sulfuric acid and 100 V presented the best performance in terms of oxidation of the dye (62%). The electric potential during the synthesis (10 V, low potential; 100 V, high potential) affected the surface characteristics: under low potential, catalyst presented smooth and homogeneous surfaces with spots (high TiO2 concentration) of amorphous solids; under low potential, catalyst presented porous surfaces with crystalline solids homogeneously distributed.

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