Publications (201)
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
ARTICLE
Elimination du fer et du manganese par un minérai naturel de manganese du Burkina Faso
Abdoulkadri Ayouba MAHAMANE,Brahima SORGHO, Boubié. GUEL,
La pollution au fer et au manganèse constitue une préoccupation majeure en zone rurale dans les pays en développement car ces deux métaux causent des nuisances d’ordre organoleptique et des problèmes de santé publique lorsqu’ils sont présents à des concentrations supérieures aux normes admises dans des eaux de boissons. Dans le présent travail(...)
Burkina Faso, Manganèse, Pollution, Elimination
ARTICLE
Electrocatalytic activity carbon-supported metallophthalocyanine catalysts toward oxygen reduction reaction in alkaline solution
Seydou Hebié, Mabinty Bayo-Bangoura, Karifa Bayo, Karine Servat, Claudia Morais,Teko W. Napporn, K. Boniface Kokoh
Carbon-supported metallophthalocyanine catalysts,
composed of a transition central metal M (M = Co, Mn, Ni,
Fe) in the phthalocyanine ring, were synthesized in this work.
As cathodic reaction in a fuel cell, the oxygen reduction reaction
(ORR) was investigated in alkaline medium with linear
scanning voltammetry at the surface of these ele(...)
Metallophthalocyanines . Cyclic voltammetry . Oxygen reduction reaction (ORR) . Electrocatalytic activity . Alkaline medium
ARTICLE
Electrochemical behaviour of iron (II) at a Nafion-1,10-phenanthroline-modified carbon paste electrode : assessing the correlation between preconcentration potential, surface morphology and impedance measurements
Abdoulkadri Ayouba MAHAMANE, Boubié. GUEL, Paul-Louis FABRE
: The electrochemical behavior of a Nafion-1,10-phenanthroline-modified carbon paste electrode (CMCPE:
Chemically Modified Carbon Paste Electrode) immersed in a supporting electrolyte 0.1 mol.L-1 acetate buffer solution
(pH 4.5) containing iron(II) metal ion has been studied, using cyclic voltammetry, differential-pulse voltammetry and
impe(...)
Iron(II) metal ion; Nafion-1
ARTICLE
Caractérisations physico-chimiques des eaux souterraines de la localité de Yamtenga (Burkina Faso)
Abdoulkadri Mahamane AYOUBA, B. GUEL
Dans la localité de Yamtenga au Burkina Faso, les eaux souterraines constituent les ressources hydriques primordiales pour l’alimentation en eau de boisson de la population rurale et pour l’irrigation des terres agricoles. Ce travail visait à étudier la qualité physico-chimique des eaux de forages et de puits de cette localité. Pour y parvenir(...)
Yamtenga, eaux souterraines, analyses physico-chimiques
ARTICLE
Impact of sheet erosion mechanisms on organic carbon losses from crusted soils in the Sahel
S.B. Maïga-Yaleu, P. Chivenge, H. Yacouba, I. Guiguemde, H. Karambiri, O. Ribolzi, A. Bary, V. Chaplot
Soil surface crusting influences water infiltration and runoff but its impact on soil organic carbon (SOC) losses by sheet erosion is largely unknown. Because there are different mechanisms of sheet erosion, from raindrop detachment and transport by raindrops interacting with flow (RIFT), to detachment and transport by flow, that require a cer(...)
Erosion mechanism, Soil surface feature, Land degradation, Soil organic carbon, Nutrients
ARTICLE
Propriétés technologiques de carreaux céramiques à base d’argiles : influence d’un talc nature
Moustapha Sawadogo, Lamine Zerbo, Mohamed Seynou, Brahima Sorgho, Raguilnaba Ouedraogo
Local clay from Burkina Faso has been used as a basic
raw material in the formulation of ceramic tile with a natural talc (0 - 4%
wt) as a flux. The used sintering temperatures are between 950 and 1100 °C
with one hour as hold at heating rate of 5 °C·min-1. The different
technological properties (shrinkage, water absorption and mechani(...)
ceramic tiles, energy gain, low temperatures, raw clay, sintering