Research Journal of Pharmacy and Technology

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Montmorillonite Nanoclay Interaction with 2-Aminophenol and 2-Nitrophenol


Affiliations
1 College of Pharmacy, University of Anbar, Ramadi, Iraq
     

   Subscribe/Renew Journal


The interaction of 2-aminophenol and 2-nitrophenol compounds with the structural iron of montmorillonite nanoclay was studied using Mössbauer spectroscopy in order to determine what effects have the groups of withdrawing and donating electrons on the phenol ring and how they affect the nanoclay structural iron. 100 mg of the organic compound was dissolved in 50 ml distilled water in 100 ml volumetric flask. 1 gm of the montmorillonite nanoclay was added to this solution. The mixture was stirred for 24 hours in order to reach equilibrium, then filtered. It was found that the structural iron (III) of the montmorillonite nanoclay sample can be reduced to iron (II). The reduction process depends on the substituent on the phenolic ring. At high pH, reduction takes place if the phenolic ring has electron donating substituent like NH2, while no reduction occurs if the phenolic ring has electron withdrawing substituent like NO2. The process involves electron transfer from the hydroxyl group on the compound substituted with donating group, to the active site at the iron atoms within the montmorillonite lattice. This site is considered to be Lewis acid.

Keywords

Mössbauer Spectroscopy, Nanoclay, Montmorillonite, Phenolic Ring, Donating Substituent, Withdrawing Substituent.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Suresh R et al. Nanoclay drug delivery system. International Journal of Pharmaceutical sciences and Nanotechnology. 2010; 3(2): 901-905.

  • Akbari M et al. Properties of adsorption of vitamin B12 on nanoclay as a versatile carrier. Food Chemistry. 2017; 219: 207-214.

  • Jayrajsinh S et al. Montmorillonite nanoclay as a multifaceted drug-delivery carrier. Journal of Drug Delivery Science and Technology. 2017; 39: 200-209.

  • Hamdaoui M et al. Improvement of phenol removal from aqueous medium by adsorption on organically functionalized Moroccan stevensite. Journal of Materials and Environmental Sciences. 2018; 9(4): 1119-1128.

  • Gładysz-Płaska A. Application of modified clay for removal of phenol and PO43- ions from aqueous solution. Adsorption Science and Technology. 2017; 35(7-8): 692-699.

  • Vala R and Tichagwa L. Enhancement of the adsorption of phenol red from wastewater onto clinoptilolite by modification with N-terminated siloxanes. Clays and Clay Minerals. 2013; 61(6): 532–540.

  • Belarbi H and Al-Malack MH. Adsorption and stabilization of phenol by modified local clay International Journal of Environmental Research. 2010; 4(4): 855-860.

  • Gładysz-Płaska A et al. Simultaneous adsorption of chromium(VI) and phenol on natural red clay modified by HDTMA. Chemical Engineering Journal. 2012; 179: 140-150.

  • Yildiz A and Gur A. Adsorption of phenol and chlorophenols on pure and modified sepiolite. Journal of the Serbian Chemical Society. 2007; 72(5): 467-474.

  • Djebbar M et al. Adsorption of phenol on natural clay. Applied Water Science. 2012; 2(2): 77-86.

  • Isaacson PJ and Sawhney BL. Sorption and transformation of phenols on clay surfaces: Effect of exchangeable cations. Clay Minerals. 1983; 18: 253-265.

  • Thompson TD and Tsunahina A. The alteration of some aromatic amino acids and polyhydric phenols by clay minerals. Clays and Clay Minerals. 1973; 21:351-361.

  • Shakir K et al. Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite. Journal of Hazardous Materials. 2008; 150: 765-773.

  • Suresh S et al. Adsorption of catechol, resorcinol, hydroquinone, and their derivatives. International Journal of Energy and Environmental Engineering. 2012; 3(32): 1-9.

  • Yildiz N et al. Adsorption of benzoic acid and hydroquinone by organically modified bentonites. Colloids and Surfaces A Physicochemical and Engineering Aspects. 2005; 260(1): 87-91.

  • Saltzman S and Yariv S. Infrared study of the sorption of phenol and p-nitrophenol by montmorillonite. Soil Since Society of America, Proceedings. 1975; 39(3): 474-479.

  • Ko CH et al. p-Nitrophenol, phenol and aniline sorption by organo-clays. Journal of Hazardous Materials. 2007; 149: 275-282.

  • Periadurai T et al. Thermal decomposition behavior of clay-phenolic nanocomposite prepared by in-situ polymerization. Nanotechnology. 2011; 1: 554-557.

  • Elboughdiri N et al. Optimization of the degradation of hydroquinone, resorcinol and catechol using response surface methodology. Advances in Chemical Engineering and Science. 2015; 5: 111-120.

  • Tennakoon DTB et al. Surface and intercalate chemistry of layer silicates. Part II. An iron-57 Mössbauer study of the role of lattice-substituted iron in the benzidine blue reaction of montmorillonite. Journal of the Chemical Society, Dalton 1974; 2211-2215.

  • Hassen JH: Ph.D. Thesis. Department of Chemistry, Essex University. UK. 1988.

  • Latta DE et al. Fe(II)-Fe(III) Electron transfer in a clay mineral with low Fe content. ACS Earth and Space Chemistry. 2017; 1(4): 197–208.

  • Manoharan C et al. FTIR and Mössbauer spectroscopy applied to study of archaeological artefacts from Maligaimedu, Tamil Nadu, India. Indian Journal of Pure and Applied Physics. 2007; 45: 860-865.

  • Cherifa B et al. Magnetic titanium-pillared clays (Ti-M-PILC): Magnetic studies and Mössbauer spectroscopy. Clays and Clay Minerals. 2009; 57(4): 433-443.

  • Annamalui R et al. Application of 57Fe Mössbauer spectroscopy for the characterization of archaeological pottery of Tamilitadu. Journal of Radiation and Nuclear Applications 2016; 1: 1-9.

  • Murad E et al. The thermal reactions of montmorillonite: a Mössbauer study. Clay Minerals. 2016; 37(4): 583-590.


Abstract Views: 163

PDF Views: 0




  • Montmorillonite Nanoclay Interaction with 2-Aminophenol and 2-Nitrophenol

Abstract Views: 163  |  PDF Views: 0

Authors

Jasim Hamadi Hassen
College of Pharmacy, University of Anbar, Ramadi, Iraq

Abstract


The interaction of 2-aminophenol and 2-nitrophenol compounds with the structural iron of montmorillonite nanoclay was studied using Mössbauer spectroscopy in order to determine what effects have the groups of withdrawing and donating electrons on the phenol ring and how they affect the nanoclay structural iron. 100 mg of the organic compound was dissolved in 50 ml distilled water in 100 ml volumetric flask. 1 gm of the montmorillonite nanoclay was added to this solution. The mixture was stirred for 24 hours in order to reach equilibrium, then filtered. It was found that the structural iron (III) of the montmorillonite nanoclay sample can be reduced to iron (II). The reduction process depends on the substituent on the phenolic ring. At high pH, reduction takes place if the phenolic ring has electron donating substituent like NH2, while no reduction occurs if the phenolic ring has electron withdrawing substituent like NO2. The process involves electron transfer from the hydroxyl group on the compound substituted with donating group, to the active site at the iron atoms within the montmorillonite lattice. This site is considered to be Lewis acid.

Keywords


Mössbauer Spectroscopy, Nanoclay, Montmorillonite, Phenolic Ring, Donating Substituent, Withdrawing Substituent.

References