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Physico-Chemical and Electrochemical Characterizations of a Trachyte in the Far North Region of Cameroon for Possible Electroanalytical and Environmental Purposes
Journal of Inorganic and Organometallic Polymers and Materials ( IF 3.9 ) Pub Date : 2020-08-13 , DOI: 10.1007/s10904-020-01706-3
Lemankréo Dai-Yang , Martin Pengou , Hervé Leclerc Tcheumi , Dawai Nguihdama , Abdoul Wahabou , Beaufils Ngana Ngatchou , Odilon Romaric Tchio Wamba , Hervé Tchakouté Kouamo , Charles Péguy Nanseu-Njiki , Emmanuel Ngameni

The trachyte which was the subject of this work was subjected to physicochemical and electrochemical characterizations. X-ray diffraction, Fourier transform infrared (FT-IR), X-ray fluorescence, EDX analysis, scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy were used. The physicochemical characterization have indicated the presence of elements such as Albite (Na (AlSi3O8); Microcline (K(AlSi3O8); Muscovite (KAl2(Si3Al)O10 (OH)2) and Diopside Aluminum (Ca(MgFeAl)SiAl)2O6). X-ray fluorescence revealed presence of certain chemical elements in the form of oxide (SiO2: 65.24 wt%; Al2O3: 15.49 wt%; Fe2O3: 5.31 wt%; Ca0: 0.02 wt%; MgO: 0.01 wt%; SO3: 0.03 wt%; Na2O: 3.45 wt%; K2O: 5.65 wt% and P2O5: 0.029 wt%). FTIR and EDX confirmed the results obtained by X-ray and X-ray fluorescence. Presence of quartz, particles of trachyte in the form of clusters of fine aggregates and platelets in the form of rods with irregular contours was confirmed by scanning electron microscopy. Electrochemical characterization showed that our material has affinity with K3Fe(CN)6 and Ru(NH3)6Cl3, but this affinity is much more pronounced with K3Fe(CN)6. Modifying glassy carbon electrode with a fine fraction of the trachyte significantly increased sensitivity of the electrode of these species. SiO2/Al2O3 ratio confirmed mechanical resistance of our material and would predestine it in the manufacture of geopolymer binders. Sum% SiO2 + % Al2O3 + % Fe2O3 greater than 70 wt% indicated possibility of using material as pozzolanic materials. High level of alumina, low content of alkaline elements (K2O, Na2O) allow the use of trachyte as a raw material for manufacture of refractory products. This information would allowed us to consider the use of our material for electroanalytical, industrial purposes.



中文翻译:

喀麦隆最北部地区的曲棍球的理化和电化学特性,可能用于电分析和环境目的

作为这项工作主题的小曲棍球经过了物理化学和电化学表征。使用了X射线衍射,傅立叶变换红外(FT-IR),X射线荧光,EDX分析,扫描电子显微镜,循环伏安法,电化学阻抗谱。理化特性表明存在元素,如阿尔比特(Na(Al (AlSi 3 O 8)),微晶(K(AlSi 3 O 8),白云母(KAl 2(Si 3 Al)O 10(OH)2)和透辉石铝) (Ca(MgFeAl)SiAl)2 O 6)。X射线荧光显示以氧化物形式存在某些化学元素(SiO 2:65.24wt%; Al 2 O 3:15.49wt%; Fe 2 O 3:5.31wt%; Ca 0:0.02wt%; MgO:0.01重量%; SO 3:0.03重量%; Na 2 O:3.45重量%; K 2 O:5.65重量%和P 2 O 5:0.029重量%。FTIR和EDX证实了通过X射线和X射线荧光获得的结果。通过扫描电子显微镜确认了石英,细团簇形式的曲奇颗粒和具有不规则轮廓的棒状的血小板的存在。电化学表征表明我们的材料与K具有亲和力3 Fe(CN)6和Ru(NH 36 Cl 3,但这种亲和力对K 3 Fe(CN)6更为明显。用细小部分的曲奇修饰玻璃碳电极,可显着提高这些物种电极的灵敏度。SiO 2 / Al 2 O 3的比例证实了我们材料的机械抵抗力,并将在地聚合物粘合剂的生产中预先确定。总和%SiO 2  +%Al 2 O 3  +%Fe 2 O 3大于70wt%表明使用该材料作为火山灰材料的可能性。高含量的氧化铝,低含量的碱性元素(K 2 O,Na 2 O)使得可以将曲奇作为原料用于制造耐火制品。该信息将使我们能够考虑将材料用于电分析,工业目的。

更新日期:2020-08-14
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