Publications (192)
ARTICLE
Copper octacarboxyphthalocyanine as sensitizer of graphitic carbon nitride for efficient dye degradation under visible light irradiation
Seydou Ouedraogo , Bilel Choucheneb, , Christophe Desmarets , Thomas Gries , Lavinia Balane , René Fournet , Ghouti Medjahdi , Karifa Bayo , Raphaël Schneiderb
In this paper, copper octacarboxyphthalocyanine (CuPc) was demonstrated to be an efficient photosensitizer of
graphitic carbon nitride (g-CN) for the degradation of dyes like Orange II or Methylene Blue under visible light
irradiation. UV–vis absorption, photoluminescence and photocurrent measurements demonstrate that CuPc not
only allows t(...)
Mots clés non renseignés
ARTICLE
Préparation et études vibrationnelle et électronique de complexes de la phtalocyanine d’or avec des ligands axiaux pyridine et pyridines substituées
Ali Sanda BAWA, Mabinty Bayo-BANGOURA, Bertrand OUEMEGA et Karifa BAYO
Les phtalocyanines de nombreux éléments périodiques ont été préparées et étudiées.
Toutefois, il existe très peu de données disponibles sur la phtalocyanine d’or. Ce travail a pour
objectif d’apporter une contribution à une meilleure connaissance de la structure électronique de ce
complexe. La phtalocyanine d’or (AuPc) et une série de ses c(...)
Phtalocyanine d’or (AuPc), pyridine, pyridines substituées, spectrométrie vibrationnelle
ARTICLE
Preparation, vibrational and electronic studies of hexacoordinated complexes of iron octocarboxyphthalocyanine with pyridine axial ligands and Substituted pyridines, phosphine and phosphites
Lassané Tarpaga, Mabinty Bayo-Bangoura, Seydou Ouédraogo and Karifa Bayo
Iron phthalocyanine (FePc), iron octocarboxyphthalocyanine [(COOH)8FePc] and their complexes
carrying axial ligands were prepared and studied by vibrational and optical spectrometry. The ligands
used are: pyridine and its derivatives 3-Rpyridine (with R = CH3, OH, Cl and OHCH2), 4-Rpyridine
(with R = CH3, OH, CN and SH), phosphites and phos(...)
Iron phthalocyanine (FePc), iron octocarboxyphthalocyanine (COOH)8FePc, Pyridine, Phosphites, Phosphine, IR
ARTICLE
Sustainable approach to recover the hull waste of balanitesoegyptiaca for removal of fluoride from water
Marou GOUROUZA, Zeinabou MAHAMADOU, Mabinty BAYO-BANGOURA, Karifa BAYO, Anne BOOS
The presence of fluoride in water has become a major concern worldwide because of its chronic human
carcinogenic behavior. Developing easily accessible and environmentally friendly disposal strategies is therefore a
challenge for scientists. Heme-activated balaniteoegyptiaca shell carbon has been studied for its ability to adsorb
fluorine f(...)
hull waste of balanitesoegyptiaca ; fluoride, adsorption
ARTICLE
Greening Reversed-Phase Liquid Chromatography Methods Using Alternative Solvents for Pharmaceutical Analysis
Moussa Yabré, Ludivine Ferey, Touridomon Issa Som, Karen Gaudin
The greening of analytical methods has gained increasing interest in the field of pharmaceutical analysis to reduce environmental impacts and improve the health safety of analysts. Reversed-phase high-performance liquid chromatography (RP-HPLC) is the most widely used analytical technique involved in pharmaceutical drug development and manufac(...)
Mots clés non renseignés
ARTICLE
Préparation et études vibrationelle et electronique de complexes de la phtalalocyanine d’or avec des ligands axiaux thiolates
Ali Sanda BAWA, Mabinty Bayo-Bangoura, Seydou Ouédraogo, Lassané Tarpaga , Karifa Bayo
Nous avons préparé et étudié par spectrométries vibrationnelle et électronique une série de complexes de la
phtalocyanine d’or (AuPc) portant des ligands axiaux thiolates (RS- avec R = O2NPh-, PhCH2-, Ph-, CH3CH2- et CH3-).
L’analyse des spectres infrarouges dans le domaine 2000 cm-1 – 400 cm-1 confirme la réaction de la phtalocyanine d’or a(...)
phtalocyanine d’or (AuPc), thiolates, spectrométrie vibrationnelle
ARTICLE
On the interest of ambipolar materials for Gas sensing
Amelie Wannebroucq, Seydou Ouedraogo, Rita Meunier-Prest, Jean-Moise Suisse, Mabinty Bayo, Marcel Bouvet
Based on the electrochemical properties of a series of metallophthalocyanines this article shows that the
phthalocyanine bearing four alkoxy groups and twelve fluorine atoms behaves approximately as those
with eight fluorine atoms. This indicates that the electron-donating effect of one alkoxy group balances the
electro-withdrawing effect o(...)
Mots clés non renseignés
ARTICLE
Enhanced extraction of flavonoids from Odontonema strictum leaves with antioxidant activity using supercritical carbon dioxide fluid combined with ethanol
OUEDRAOGO Jean Claude W., DICKO Cedric, KINI Félix B., BONZI-COULIBALY Yvonne L., DEY Estera Szwajcer
Flavonoids were extracted from Odontonema strictum leaves by supercritical carbon dioxide, with ethanol. The effect of three independents variables (time, pressure and temperature) on the Total Flavonoid Content (TFC) were optimized by factorial investigation. The TFC and flavonoid recovery varies respectively from 99.33 to 247.78 mg/g of drie(...)
Odontonema strictum; Supercritical fluid extraction; Total flavonoid content; Response surface methodology; Antioxidant activity
ARTICLE
Preparation et etudes vibrationelle et electronique de complexes de la phtalalocyanine d’or avec des ligands axiaux phosphines et phosphites
Ali Sanda BAWA, Lassane Tarpaga, Mabinty Bayo-Bangoura, Seydou Ouédraogo, Karifa Bayo
Nous avons préparé et étudié par spectrométries optique et vibrationnelle une série de complexe de la
phtalocyanine d’or (AuPc) portant des ligands axiaux [PPh3, P(OMe)3, POH(OEt)2, P(OPh)3]. L’analyse des spectres
infrarouges dans le domaine 2000 cm-1-400 cm-1 confirme la réaction de la phtalocyanine d’or avec les différents ligands. Les co(...)
phtalocyanine d’or (AuPc), phosphine, phosphite, spectrométrie vibrationnelle
ARTICLE
Visual appearance durability as function of natural and acceleratedageing of electrophoretic styrene-acrylic coatings: Influence of yellowpigment concentration
Tambi Ramdé, Luiz Gustavo Ecco, Stefano Rossi
Organic coatings are extensively used in many fields of engineering such as automotive or architectural industries for protection of the metallic structure against corrosion and to deliver visual aspects to the coated item. High quality paints either for outdoor or indoor applications require longer stability of their visual appearance alongsi(...)
Styrene-acrylic coating, Yellow pigment, Color evolution, UV-B test, Natural ageing
ARTICLE
Removal of Cd2+, Cu2+ and Pb2+ with a Burkina Faso clay, Scientific Study and Research: Chemistry and Chemical Engineering
Sorgho, B.; Ayouba Mahamane, A.; Guel, B.; Zerbo, L.; Gomina, M.; Blanchart,P.
Contamination of water by heavy metals is often linked to
human, industrial and agricultural activities, and cause health and ecological
problems. The objective of this study is to remove water pollutants like
Cd2+, Cu2+ and Pb2+ in synthetic solutions by adsorption on clay from
Burkina Faso. Electrochemical characterizations revealed that(...)
Burkina Faso clay, heavy metals, mechanisms
ARTICLE
Hydrochimie des eaux de pluie et de ruissellement en région sahélienne
Stéphanie Maïga-Yaleu, HammaYacouba, Issaka Guiguemde
Dans les pays sahéliens, la dégradation de la qualité des eaux de surface est le résultat des apports en matière
dissoute et particulaire issue des eaux pluviales, d’infiltration et de ruissellement. Cette étude vise à analyser les
processus chimiques qui contrôlent la distribution des composés chimiques dans les eaux de pluie et de ruissell(...)
hydrochimie, matière dissoute, environnement, poussières atmosphériques, Tougou
ARTICLE
Densification behaviour of chamotte grog for refractory bricks : mineralogy and microstructure
Moustapha Sawadogo, Mohamed Seynou, Lamine Zerbo, Brahima Sorgho, Adama Yameogo, Younoussa Millogo, Raguilnaba Ouedraogo
The paper deal with the densification behaviour of chamotte grog made with raw clay material at
high temperature. The sintering conditions as temperature (1100, 1200, 1300 and 1400°C) temperature time (0.5;
1 and 2hours) have been varied to check the optimal condition to produce grog with better characteristics. The
relationship between(...)
Raw clay, Chamotte grog, densification, mullite, cristobalite
ARTICLE
Etude de l'élimination du chrome (III) par une argile kaolinitique
Tibo ZOROME, Corneille BAKOUAN, Brahima SORGHO, Abdoulkadri AYOUBA MAHAMANE, Boubié GUEL,
Des études sur la qualité des eaux de surfaces et des eaux souterraines ont
révélé un taux croissant de contamination de ces ressources par des métaux
lourds liés aux voisinages. Cette pollution des eaux est couramment générée
par les activités anthropiques en relation avec l’agriculture et l’industrie. Ce
phénomène est responsable de la p(...)
pollution, élimination, chrome, argile naturelle, capacité d’échange cationique
ARTICLE
Etude des propriétés mécaniques des géométraux argileux associant la décoction de Parkia Biglobosa (néré) Mechanical properties of geomaterials formulated with clay and Parkia biglobosa (néré) extract
Brahima Sorgho a, *, Philippe Bressollier b, Boubie Guel a, Lamine Zerbo a, Raguilnaba Ouedraogo a, Moussa Gomina c, Philippe Blanchart d
Researches for non-energy intensive construction products, that are durable and cheaper is today of global concern because of the limited resources (energy, financial, etc.). To address this issue, the present work presents the combination of the decoction of pods of Parkia Biglobosa (néré) that is rich in tannins compounds including gallic ac(...)
Clay Geomaterials Tannins Oxides iron Pods of Parkia biglobosa