Two-Dimensional Correlation Spectroscopic Analysis on the Interaction between Humic Acids and TiO2 Nanoparticles

2014 ◽  
Vol 48 (19) ◽  
pp. 11119-11126 ◽  
Author(s):  
Wei Chen ◽  
Chen Qian ◽  
Xiao-Yang Liu ◽  
Han-Qing Yu
Keyword(s):  
Tio2 Nanoparticles ◽  
Humic Acids ◽  
Spectroscopic Analysis ◽  
Two Dimensional

scholarly journals 3D-fluorescence spectroscopic analysis of HPLC fractionated estuarine fulvic and humic acids

2006 ◽  
Vol 17 (1) ◽  
pp. 113-124 ◽  
Author(s):  
Marta M. D. Sierra ◽  
Marcelo Giovanela ◽  
Edith Parlanti ◽  
Eduardo J. Soriano-Sierra
Keyword(s):  
Humic Acids ◽  
Spectroscopic Analysis

Two-dimensional MoS2 nanosheet-modified oxygen defect-rich TiO2 nanoparticles for light emission and photocatalytic applications

2020 ◽  
Vol 44 (35) ◽  
pp. 14936-14946 ◽  
Author(s):  
Jaspal Singh ◽  
R. K. Soni
Keyword(s):  
Tio2 Nanoparticles ◽  
Organic Pollutants ◽  
Light Emission ◽  
Combined Effects ◽  
Two Dimensional ◽  
Oxygen Defect ◽  
Junction Formation ◽  
Defect Creation ◽  
Mos2 Nanosheet ◽  
Photocatalytic Applications

MoS2/TiO2 nanohybrids efficiently decompose organic pollutants under sunlight due to the combined effects of defect creation and hetero-junction formation.

Chemical constituents of two Ecuadorian medicinal plants, Tagetes terniflora Kunth and Croton rivinifolius Kunth

2021 ◽  
Author(s):  
Alírica I Suárez ◽  
Vladimir Morocho ◽  
Vladimir Luna ◽  
Katty Castillo ◽  
Chabaco Armijos
Keyword(s):  
Medicinal Plants ◽  
Spectroscopic Analysis ◽  
Chemical Constituents ◽  
Two Dimensional ◽  
Phytochemical Study ◽  
Isolation And Characterization ◽  
Organic Extracts ◽  
Medicinal Properties ◽  
Nmr Methods

Phytochemical study of two medicinal plants from Ecuador, Tagetes terniflora Kunth, and Croton rivinifolius Kunth, led to the isolation and characterization of the major constituents present in the organic extracts obtained from these plants: 5-(4-acetoxy-1-butynil)-2,2’-bi-thiophene (1), 5-methyl-2,2’:5’,2”- terthiophene (2), patuletin (3) from Tagetes terniflora, and isocorydine (4), sweroside (5), tiliroside (6) from Croton rivinifolius. The structures of these compounds were established by spectroscopic analysis including two-dimensional NMR methods, MS, and comparison with published spectral data. They are recognized as secondary metabolites that represent the chemotaxonomy of Tagetes and Croton genera and could be responsible for the recognized medicinal properties attributed to these species. This paper deals with the first report that shows the presence of these compounds in these plants.

scholarly journals Effect of residual vanadyl ions on the spectroscopic analysis of humic acids: a multivariate approach

2008 ◽  
Vol 59 (3) ◽  
pp. 439-444 ◽  
Author(s):  
E. H. Novotny ◽  
H. Knicker ◽  
L. Martin-Neto ◽  
R. B. V. Azeredo ◽  
M. H. B. Hayes
Keyword(s):  
Humic Acids ◽  
Spectroscopic Analysis ◽  
Multivariate Approach

scholarly journals Antibacterial and Antifungal Sesquiterpenoids from Aerial Parts of Anvillea garcinii

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1730 ◽  
Author(s):  
Shagufta Perveen ◽  
Jawaher Alqahtani ◽  
Raha Orfali ◽  
Hanan Y. Aati ◽  
Areej M. Al-Taweel ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Spectroscopic Analysis ◽  
Antimicrobial Properties ◽  
Ionization Mass ◽  
Two Dimensional ◽  
One Dimensional ◽  
Aerial Parts ◽  
Pathogenic Microbes ◽  
Antibacterial And Antifungal ◽  
New Metabolites

Two new sesquiterpenoids belonging to the guaiane, 4α,9α,10α-trihydroxyguaia-11(13)en-12,6α-olide (1), and germacrane, 9β-hydroxyparthenolide-9-O-β-D-glucopyranoside (2), classes have been isolated from the leaves of the Saudi medicinal plant Anvillea garcinii along with seven known compounds (3–9). The structures of the new metabolites were elucidated by spectroscopic analysis, including one-dimensional (1D) and two-dimensional (2D) Nuclear Magnetic Resonance (NMR) and high-resolution electrospray ionization mass spectrometry (HR-ESIMS). The antimicrobial properties of 1–9 were screened against seven different pathogenic microbes, and compounds 1–3 showed a potent antifungal activity.

New triterpenoids from the leaves of Photinia serrulata

2008 ◽  
Vol 2008 (11) ◽  
pp. 613-614 ◽  
Author(s):  
Li-Bing Yang ◽  
Li-Xing Zhao
Keyword(s):  
Spectroscopic Analysis ◽  
Two Dimensional ◽  
Relative Configuration ◽  
Nmr Techniques

A new triterpenoid, 3β,15α-dihydroxy-12-keto-9(11)-ursene, and three known analogues, were isolated from the leaves of Photinia serrulata. The structure of the new compound, including its relative configuration, was elucidated by spectroscopic analysis, especially by two dimensional NMR techniques.

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