Publications (201)
ARTICLE
Adsorptive removal of α-endosulfan from water by hydrophobic zeolites. An isothermal study
Arsène H. Yonli, Isabelle Batonneau-Gener, Jean Koulidiati
This paper deals with the removal of α-endosulfan from water over HY and steamed HBEA zeolites. Experiments were performed to understand the adsorption mechanisms of α-endosulfan on zeolites and to determine the most efficient adsorbent for the purification of water contaminated by this pesticide. The experiments exhibit that α-endosulfan was(...)
Mots clés non renseignés
ARTICLE
Collision-induced dissociation of flavonoid 7-O-diglycoside cations: elucidation of important structural motifs by selection of the cationizing reaction
Ousmane Ilboudo, Issa Tapsoba, Yvonne L Bonzi-Coulibaly, Pascal Gerbaux
Flavonoids are ubiquitous molecules in nature and are found in almost all plants, including fruits and vegetables. Although flavonoids are structurally similar, subtle differences in their structures lead to important changes in their biological activities. Over years, mass spectrometry has become an ideal tool for the characterization of thos(...)
Mots clés non renseignés
ARTICLE
An organometallic derivative of a BAPTA ligand: towards electrochemically controlled cation release in biocompatible media
29. Koyel X. Bhattacharyya, Leıla Boubekeur-Lecaque, Issa Tapsoba, Emmanuel Maisonhaute, Bernd Schollhorn and, Christian Amatore
Calcium behaves as a chemical messenger in a wide variety of cells, and local variations in its
concentration play a key role in many biological processes. 1,2 The understanding of how calcium
affects cellular functions necessitates the precise modulation of calcium concentration with high
spatial and temporal resolution. Tremendou(...)
Mots clés non renseignés
COMMUNICATION
Antioxidant potential of 4-acyl isochroman-1, 3-diones
Djandé Abdoulaye, Kiendrébéogo Martin, Compaoré Moussa, Kaboré Léopold, Nacoulma G. Odile, Aycard Jean-Pierre and Saba Adama
A new family of compounds (4-acyl isochroman-1,3-diones), demonstrating antioxidant properties, have been
synthesized and described. Their antioxidant properties are studied herein. These antioxidant characters increased with
the electronic withdrawing character of the acyl substituent. So, 4-p-Cyanobenzoyl isochroman-1,3-dione and 4-pNitrob(...)
Antioxidant activity, DPPH scavenging activity, Fe3+ reducing power, 4-acyl isochroman-1, 3-diones
ARTICLE
Comportement à la corrosion des alliages d’aluminium recyclés pour la confection de marmites
Brahima Sorgho1 , Samuel Paré2∗ , Boubié Guel3 , Lamine Zerbo1 , Karfa Traoré1 , Ingmar Persson
Des études sur la qualité des eaux souterraines et de surfaces au Burkina Faso ont révélé un niveau élevé de contamination de ces ressources par les métaux lourds, notamment dans le milieu urbain et aux alentours des mines. La présence de ces métaux est principalement due aux activités anthropiques liées à l’industrie, l’agriculture ou encore(...)
Métaux lourds, pHpzc, Argile
ARTICLE
Préparation et étude de la phtalocyanine d’or
Bertrand Ouemega, Mabinty Bayo-Bangoura, Karifa Bayo.
Nous avons préparé par la voie humide, à partir du phtalodinitrile et de l’acide
tétrachloroaurique trihydraté, la phtalocyanine d’or (AuPc). Le produit a été caractérisé par
spectrométries de masse, vibrationnelle et électronique.
Métallophtalocyanine ; Or ; UV-visible ; Infrarouge.
ARTICLE
Solvent induced aggregation of protoporphyrin and octacarboxylphthalocyanine of zinc deposited on gold surface.
Virginie Gadenne, Mabinty Bayo-Bangoura, Louis Porte, Lionel Patrone.
In this paper, we studied the influence of solvent on the morphology of zinc protoporphyrin and zinc
octacarboxylphthalocyanine films transferred onto gold surface by dipping. In these films, carboxylic acid
groups borne in periphery of macrocycles allow anchoring to gold via ionic interaction. First, we followed
by UV–Visible absorption sp(...)
Zinc protoporphyrin Zinc phthalocyanine Solvent Aggregation Self-assembled monolayer Gold surface
ARTICLE
Antipassivating electrochemical process of glassy carbon electrode (GCE) dedicated to the oxidation of nitrophenol compounds
M. Pontié, G. Thouand, F. De Nardi, I. Tapsoba, S. Lherbette
We report for the first time a novel electrochemical treatment applied to a glassy carbon electrode (GCE) during p‐nitrophenol (PNP) oxidation and dedicated to the limitation of electrode passivation by nitrophenol compounds oxidation. We propose an electrochemical process of direct phenol oxidation by starting the electrolysis at a very low p(...)
Mots clés non renseignés
ARTICLE
Mabinty Bayo-Bangoura, Karifa Bayo, Mireille Mossoyan-Deneux. Synthèse de la chlorosousphtalocyanine de bore à partir de l’acide 1,4-diboronique benzène
Mabinty Bayo-Bangoura , Karifa Bayo, Mireille Mossoyan-Deneux
Nous avons synthe´ tise´ SubPcBCl a` partir de l’acide 1,4-diboronique benze`ne avec un
rendement de 45 %. Les analyses spectrome´ triques IR, UV-visible et RMN du proton sont
conformes aux donne´es de la litte´ rature.
Chlorosousphtalocyanine Bore Acide 1, Acide 1
ARTICLE
Direct Electroanalysis of p‐Nitrophenol (PNP) in Estuarine and Surface Waters by a High Sensitive Type C/p‐NiTSPc Coating Carbon Fiber Microelectrode (CFME)
M. Pontié, L. Sikpo, G. Thouand, R. Lahan, I. Tapsoba, R. Mallet, T. Feng
We report for the first time on the elaboration of a remarkable sensitivity type C/p‐NiTSPc carbon fiber microelectrode (CFME) for p‐nitrophenol (PNP) pollutant. We observed the best performances using square wave voltammetry (SWV) technique in the place of differential pulse voltammetry (DPV). Also the combination of p‐NiTSPc optimized cycles(...)
Mots clés non renseignés
ARTICLE
Comparative study of the hydrophobicity of BEA, HZSM-5 and HY zeolites determined by competitive adsorption
Arsène H. Yonli, Isabelle Gener, Samuel Mignard
A hydrophobicity study was realized for a series of siliceous and steamed BEA, HZSM-5 and HY zeolites. The hydrophobicity was assessed according to the Weitkamp method by performing water and toluene competitive adsorption experiments. The Weitkamp hydrophobicity indexes (HI) were determined for each sample. The BEA samples were the most hydro(...)
Mots clés non renseignés
ARTICLE
Tailoring the Hydrophobic Character of Mesoporous Silica by Silylation for VOC Removal
Isabelle Batonneau-Gener, Arsène Yonli, Adeline Trouvé, Samuel Mignard, Matteo Guidotti, Maila Sgobba
MCM-41 and non-ordered mesoporous silica were modified using hexamethyl-disilazane (HMDS). The hydrophobic and hydrophilic properties of grafted materials were studied and compared to a purely all silica BEA zeolite by using competitive and noncompetitive water toluene adsorption. A linear correlation between the silylation degree and the hydr(...)
Mots clés non renseignés
ARTICLE
Sensitive and Selective Electrochemical Analysis of Methyl‐parathion (MPT) and 4‐Nitrophenol (PNP) by a New Type p‐NiTSPc/p‐PPD Coated Carbon Fiber Micro...
Issa Tapsoba, S. Bourhis, T. Feng, M. Pontié
A novel modified carbon fiber microelectrode (CFME) was obtained by combination of tetrasulfonated nickel phtalocyanine (p‐NiTSPc) electroformed film associated to para‐phenylenediamine (p‐PPD) electropolymerized outer‐coating. The modified CFMEs where denoted C/p‐NiTSPc and C/p‐NiTSPc/p‐PPD, respectively. These electrodes are dedicated to the(...)
Mots clés non renseignés
ARTICLE
Les phénomènes de nitration des eaux souterraines dans la région de Tilabéry (Niger)
Marou Gourouza , Garba Zibo , Karifa Bayo
Résumé : Des échantillons d’eaux de consommation provenant de trois cent points d’eau
souterraine repartis sur toute la région de Tillabéry (Niger) ont été analysés. Les résultats
révèlent qu’environ 2/3 de ces points d’eaux connaissent un début de pollution au nitrate ;
10% sont impropres à la consommation humaine avec des teneurs supérieu(...)
Mots clés : eau, pollution, nitrate, potassium
ARTICLE
Comportement à la corrosion des alliages d’aluminium recyclés pour la confection de marmites
Tambi Ramdé∗ , Lucien Bonou, Boubié Guel, Jean Boukari Legma
La composition chimique et la microstructure d’alliages d’aluminium recyclés pour la fabrication de marmites ont été déterminées par méthode spectrométrique d’émission par ICP et la diffraction de rayons X (DRX). Le comportement à la corrosion aqueuse de ces alliages a été étudié dans une solution de Na2SO4, 0,5 M par le suivi de l’évolution d(...)
alliages d’aluminium recyclés, corrosion, polarisation potentiodynamique