Synthesis, Characterization and Gas Sensor Application of New Composite Based on MWCNTs:CoPc:Metal Oxide

تم تخليق فثالوسيانين الكوبالت الجديد المعوض (CoPc) باستخدام مواد البدء النفثالين -1،4،5 ، ثنائي هيدريد حامض التراكربونيك (NDI) عن طريق العملية الجافة. تم تصنيع الأوكسيدات المعدنية (60٪ Ni3O440٪ -Co3O4) مع الأنابيب النانوية الكاربونية متعددة الحوائط (F-MWCNTs) لإنتاج المتراكب النانوي (F-MWCNTs / MO)  (E2) وخلطها مع CoPc لإنتاج (F-MWCNT) / CoPc / MO) (E3). تم فحص هذه المركبات باستخدام طرق تحليلية وطيفية مختلفة مثل H-NMR1  ، مطياف FTIR ، حيود الأشعة السينية (PXRD)  (2θ o = 10-80) ، مطيافية رامان ، وقياس الطيف المرئي للأشعة فوق البنفسجية. ثم تم فحص نشاط هذه المواد لاستشعار غازات (NH3 ، ميثانول ، أسيتون).كان تركيز المحاليل المستخدمة 0.2 ملغم من المادة المحضرة  لكل1 مل من الامونيا, الميثانول والاسيتون. تم أجراء القياسات بدرجة حرارة 298 كلفن.  كانت الأشكال السطحية للمواد المحضرة غير متجانسة.The synthesis of new substituted cobalt Phthalocyanine (CoPc) was carried out using starting materials Naphthalene-1,4,5, tetracarbonic acid dianhydride (NDI) employing dry process method. Metal oxides (MO) alloy of (60%Ni3O4 40%-Co3O4 ) have been functionalized with multiwall carbon nanotubes (F-MWCNTs) to produce (F-MWCNTs/MO) nanocomposite (E2) and mixed with  CoPc to yield (F-MWCNT/CoPc/MO) (E3). These composites were investigated using different analytical and spectrophotometric methods such as 1H-NMR (0-18 ppm), FTIR spectroscopy in the range of (400-4000cm-1), powder X-rays diffraction (PXRD, 2θ o = 10-80), Raman spectroscopy (0-4000 cm-1), and UV-Visible spectrophotometry (0-800 nm). Then the activity of these materials was investigated as a gas sensing of (Ammonia, Methanol and Acetone). For each case, 0.2 mg/.mL of the prepared Copc, Copc/MWCNT, Copc/MWCNTs–MO was dispersed in 1m of ammonia, methanol and acetone at 298K. The surface morphology of the prepared materials was heterogeneous

Photocatalytic removal of reactive yellow 145 dye from simulated textile wastewaters over supported (Co, Ni)3O4/Al2O3 co-catalyst

The supported co-catalyst (Co, Ni)3O4/Al2O3 was prepared via using a co-precipitation method. Three sets of these materials were prepared by calcination at three different temperatures 500, 600, and 700°C. Crystal structure of the prepared materials was investigated using powder X-rays diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), Atomic force microscope (AFM), and specific surface area (BET). The activity of the prepared catalysts was investigated by following both of photocatalytic and adsorption removal of Reactive yellow 145 dye (RY 145) from simulated industrial wastewaters. In this study, different reaction conditions were performed such as effect of pH of the reaction mixture, mass dosage of the used catalyst, and effect of temperature. In addition to that adsorption isotherms and reaction kinetics were investigated. Also the activity of these catalysts were investigated after cyclization of the used catalysts