تضمن العمل في هذا البحث تحضير اوكسيد المنغنيز النانوي من مستخلص النباتي لقشور الرمان و كبريتات المنغنيز في وسط قاعدي وشخص بطرق مختلفة مثل ؛ FT-IR ، الأشعة فوق البنفسجية المرئية ، الفحص المجهري للقوة الذرية وحيود الأشعة السينية ، المجهر الإلكتروني النافذ ، مجهر المسح الإلكتروني ، مطيافية الأشعة السينية المشتتة للطاقة. في حيود الأشعة السينية ، تم تحديد حجم البلورة باستخدام معادلة ديباي شيرر ، والتي وُجد أنها 30.94 نانومتر. تم امتصاص أيونات المعادن التالية (II)M= Co و Ni و Cu بنجاح باستخدام MnO2 NPs ، وأظهرت النتائج أنه يمكن إزالة أيونات المعادن الثلاثة من الماء في وقت واحد, Ni (II) لديه أعلى معدل امتصاص خلال الفترة الزمنية. كانت كفاءة إزالة أيونات Co ، و Ni ، و Cu أيونات 32.79٪ ، 75.00٪ ، 30.20 ٪. تم اختبار جسيمات MnO2 النانوية ضد نوعين من البكتيريا ونوع واحد من الفطريات بثلاثة تراكيز مختلفة, تمت مقارنة النتائج مع تلك التي تم استخدام المضادات الحيوية مثل أموكسيسيلين وميترونيدازول للمقارنة النتائج.

This study includes using green or biosynthesis-friendly technology, which is effective in terms of low cost and low time and energy to prepare V2O5NPs nanoparticles from vanadium sulfate VSO4.H2O using aqueous extract of Punica Granatum at a concentration of 0.1M and with a basic medium PH= 8-12. The V2O5NPs nanoparticles were diagnosed using several techniques, such as FT-IR, UV-visible with energy gap Eg = 3.734eV, and the X-Ray diffraction XRD was calculated using the Debye Scherrer equation. It was discovered to be 34.39nm, Scanning Electron Microscope (SEM), Transmission Electron Microscopy TEM. The size, structure, and composition of synthetic V2O5NPs were determined using the (EDX) pattern, Atomic force microscopy AFM. The adsorption experiment was successfully conducted on metal ions M (II), such as Co, Ni, and Cu. The results proved removal simultaneously from water using V2O5NPs based on surface shape on the affinity of three metal ions. The adsorption rate of Ni(II) is the highest one in the time scale and conditions of our experiment at all surfaces, while Co(II) and Cu(II) ions are close in magnitude. The removal efficiencies of mixed (M+2 = Co, Ni, and Cu) ions with λmax for Co, Ni, and Cu ions are 510,425 and 814 nm 56.66%, 77.00%, and 27.23%, respectively. The Antimicrobial activity of V2O5NPs in three concentrations, 25%, 50%, and 75%, was tested against Escherichia coli, Staphylococcus aureus, and Candida albicans fungus. The results of the inhibition of vanadium oxide nanoparticles against positive and negative bacteria were compared with the standard drug Amoxicillin and the results of fungus inhibition with the standard drug Metronidazole. It was found that nano-oxide is more effective at 75% concentration.

A novel heterocyclic Schiff base ligand, {2,2′-((4-chloro-1,3-phenylene)-bis(oxy))bis-(N′-((E)-(1 H-benzo[1-3]-triazole-1-yl)methylene)acetohydrazide)}, was synthesized and coordinated with Co(II) and Zn(II) chlorides to yield two metal complexes. The ligand and complexes were analyzed using FT-IR, ¹H and ¹³C NMR, UV-visible spectroscopy, and mass spectrometry, which provided spectral shifts typical of coordination involving the imine nitrogen and amide carbonyl groups. DFT calculations (B3LYP/LanL2DZ) showed that complexation decreased the energy gap between HOMO and LUMO from 4.26 eV (free ligand) to 3.18 eV and 2.66 eV for Zn(II) and Co(II) complexes, respectively, showing increased chemical reactivity. Similarly, the electrophilicity index increased to 33.81 eV for the Zn complex and 40.97 eV for the Co complex, indicating increased electron-accepting ability and potential biological activity. Thermal decomposition of Zn and Co complexes yielded ZnO NPs (mean crystallite size 35.6 nm) and Co ₃ O ₄ NPs (33.8 nm), as evidenced by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM). Antibacterial activity against Gram-positive bacteria ( Staphylococcus aureus , Bacillus subtilis ) and Gram-negative bacteria ( Escherichia coli , Pseudomonas aeruginosa ) was found to show that ZnO NPs had the largest inhibition zones (up to 28 mm), followed by metal complexes [Zn(L)]Cl₂ and [Co(L)]Cl ₂ , whereas the free ligand had very poor activity (only inhibition zones of 11–13 mm).

Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and chemistry letters. Oriental Journal of Chemistry is abstracted and indexed in almost all reputed National and International agencies.

This search includes the preparation of Schiff base ligand (SB) from condensation primary amine with vanillin. The new ligand was diagnosed by spectroscopic methods as Mass, NMR, CHN and FTIR. Ligand complexes were mixed from new (SB) and Anthranillic acid (A) with five metal (II) chlorides. The preparation and diagnosis were conducted by FTIR, CHN, UV-visible, molar conductivity, atomic absorption and magnetic moment. The octahedral geometrical shape of the complexes was proposed. The ligands and their new complexes were screened with two different types of bacteria.

Mixed ligand complexes included Schiff base derivative ligand (L1) have been produced by condensed {3-amino-1-phenyl-2-pyrazolin-5-one (APO)}with o-phathalaldehyde and anthranillic acid (L2) with some transition metal ions. Diagnosis of prepared ligand (L1) by 1HNMR, mass spectroscopy, (CHN) elemental analysis and UV-Visible. The complexes were typified by molar conductance, UV-Visible, FTIR, atomic absorption, magnetic susceptibility and elemental analysis techniques. Octahedral geometry are suggested for the metal complexes based on the analytical studies. All these compounds were determined a against with two type of bacteria; Gram positive and Gram negative.