Differential Thermal Gravimetric Research Articles

Carboxymethyl chitosan dopamine conjugates: Synthesis and evaluation for intranasal anti Parkinson therapy

With respect to the Parkinson's disease (PD), herein, we aimed at synthetizing and characterizing two novel macromolecular conjugates where dopamine (DA) was linked to N,O-carboxymethyl chitosan or O-carboxymethyl chitosan, being both conjugates obtained from an organic solvent free synthetic procedure. They were characterized by FT-IR, 1H NMR spectroscopies, whereas thermal analysis (including Differential Scanning Calorimetry and Thermal Gravimetric Analysis) revealed good stability of the two conjugates after exposure at temperatures close to 300 °C. Release studies in simulated nasal fluid elucidated that a faster release occurred since O-carboxymethyl chitosan-DA conjugate maybe due to the less steric hindrance exerted by the polymeric moiety. The CMCS-DA conjugates prepared in aqueous medium may self-assembly to form polymeric micelles and/or may form polymeric nanoparticles. TEM and Photon correlation spectroscopy lent support for polymeric nanoparticle formation. Moreover, such CMCS-DA conjugates showed antioxidant activity, as demonstrated by DPPH radical scavenging assay. Finally, cytocompatibility studies with neuroblastoma SH-SY5Y cells showed no cytotoxicity of both conjugates, whereas their uptake increased from 2.5 to 24 h and demonstrated in 40–66 % of cells.

Preparation and evaluation of effective thermal decomposition of tetraamminecopper (II) nitrate carried by graphene oxide

Graphene oxide (GO) was investigated in this paper as a promising catalyst for the effective thermal decomposition of tetraamminecopper (II) nitrate coordination complexes. CuC has been synthesized by doping GO nanoparticles in a one-step method and it demonstrates a uniform deposition of the produced nanocomposites onto the surface of the complex. The kinetics of decomposition and underlying mechanisms of GO on CuC have been studied using a Differential Scanning Calorimetry (DSC) technique and Thermal Gravimetric Analysis (TGA) coupled Fourier-Transform Infrared Spectroscopy (FTIR) technique and relevant theories. Under the effect of GO, the release of heat from the decomposition process is significantly increased from 97.1 J·g-1 to 69.2 J·g-1. Under the effect of GO, the activation energy of the CuC decreased from 94.3 to 82.2 ± 0.5 kJ·mol−1 (for endothermic reaction). The significance of this discovery is due to the reactive sites and great thermal conductivity of the GO. By FTIR analysis, GO affected by the formation of NH3 and N2O; and the decomposition of CuC complex in cooperation with the GO may follow a random scission model (A2) since it highly depends on the edge defects of GO as well as coordination center reactive sites (scission sites). In addition, the combustion behavior of CuC and CuC–GO in the physical mixture with B/KNO3 has been investigated. The results show that the pressure exponent “n” samples (CuC: n = 0.621 vs. CuC–GO: n = 0.703) can be stable and investigated composites are available for successful application as energetic materials.

Physical and electrical property studies on sodium (Na+) – Ion conducting Nano–Composite Polymer Electrolyte membranes

Present work reports that Polymer Electrolyte Membranes: [97PEO: 3NaCOOCH3] dispersed with ceramic filler SiO2 have been synthesized using the hot-press casting technique. Ion transport properties have been evaluated in terms of the essential ionic conductivity (σ) and total ionic (tion) / cationic (t+) transference numbers using different ac/dc techniques to evaluate its usefulness in all-solid-state battery applications. Structural/thermal properties have been characterized using X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) techniques. The thermal laminated pouch cell has been fabricated and tested by sandwiching the best optimized NCPE film between MnO2 cathode and Graphite anode. Cyclic Voltammetry study of NCPE film exhibits good electrochemical behaviour and is more suitable for battery fabrication.

Electrical and thermal analysis on Na+ - ion conducting novel blended solid polymer electrolyte membranes

In this study, the hot press method has been used to synthesize a blended solid polymer electrolyte (BSPE), containing poly (ethylene oxide) and polyacrylonitrile (PEO/PAN) matrix complexed with sodium perchlorate (NaClO4) salt. The film with varying salt concentration has been prepared, in which the BSPE OCC (optimum conducting composition) film exhibits the highest ionic conductivity is (σrt) ∼ 2.10 × 10-6 Scm−1 at room temperature. X-ray diffraction (XRD), Impedance Spectroscopy (IS), Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) techniques have been adopted for the characterization. These investigations are demonstrated their utility and potential for all-solid-state device applications.

Pyrophyllite clay-derived porous geopolymers for removal of methylene blue from aqueous solutions

This study reports the synthesis and characterization of a porous geopolymer systems based a naturally occurring Moroccan pyrophyllite clay. The contribution of pyrophyllite in geopolymerization reaction was very low, the geopolymer matrix formed was assured by alkaline activation of the metakaolin present in the sample. The pyrophyllite role is forming of disordered and heterogeneous geopolymer promote the pore creation. The structure and morphology of the raw natural clay, calcined meta-pyrophyllite phase and prepared geopolymer samples are characterized by several methods namely, X-ray Diffraction (XRD), 29Si and 27Al magic-angle-spinning nuclear magnetic resonance (MAS NMR) analysis, Fourier Transform Infra-Red (FTIR) spectroscopy, Differential Thermal Analysis (DTA) and Thermal Gravimetric Analysis (TGA), N2 adsorption/desorption isotherm analysis by the Brunauer-Emmett-Teller (BET) method and Scanning Electron Microscopy (SEM). The specific surface area (SBET) and pore volume (Vp) measured from products utilizing the calcined meta-pyrophyllite precursor (SBET = 86 m2/g and Vp = 0.08 cm3/g) have both increased markedly compared to those values determined using a raw pyrophyllite clay phase (SBET = 30 m2/g and Vp = 0.05 cm3/g). The methylene blue (MB) molecular adsorption experiment realized in water medium exhibited Pseudo Second Order (PSO) rate kinetics and adopted a Langmuir adsorption model. The thermodynamics data shows that the chemisorption is spontaneous, irreversible, and endothermic, with the quantity of MB molecules retained by the porous geopolymer specimen reaching 64.10 mg/g.

A Study of the Impact of Iron Content on the Thermal Response of the sPP/Fe Composites

A set of syndiotactic polypropylene/iron (sPP/Fe) composite samples were manufactured with the extrusion technique to study the impact of iron content on the thermal behavior of sPP/Fe composites in the melt phase. The dosage of iron contents varied from 0 to 8%. Melting point (Tm), crystallization temperature (Tc), and thermal degradation temperature (Td) were measured by Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) for each composite sample. Thermal temperatures (Tm, Tc, and Td) increased with increasing the iron contents due to the enhancement of the strength and thermal stability of the sample. This investigation is a validated fact that fillers (iron) alter both the macroscopic and microscopic properties of the polymer composites.

Analysis of Brazilian Propolis by Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA). Characteristics of Crude Resin, Ethanolic Extracts, Wax and Isolated Compounds

Analysis of Brazilian Propolis by Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA). Characteristics of Crude Resin, Ethanolic Extracts, Wax and Isolated Compounds

Structural Characterization of Bauxite Red Mud to Utilization in Ceramic Wall/Roofing Tile: Effect of Temperature on Mechanical Properties and Physic-Chemical Stability

This present research work is on the characterization of bauxite red mud (waste material) from Ngaoundal for the manufacture of ceramic products. After the extraction process, the raw material was characterized using Scanning Electron Microscopy (SEM). Morphology, mineral phases and chemical composition were determined by using energy-dispersive X-ray (EDX) analysis, X-ray diffractometer (XRD), X-ray fluorescence (XRF). Differential Scanning Calorimetry and Thermal Gravimetric Analysis (DSC-TGA), Infra-Red (IR), Particle size (PS) were also used. Results of red mud analysis show that major oxides were Fe2O3 (37.21%), Al2O3 (19.6%), SiO2 (7.68%), TiO2 (1.07%), Na2O (4.71%), and CaO (2.75%). These last oxides require low temperature to melt and act as binders which link particles of red mud during the sintering process. Presence of alkaline oxides is an appeal to reduce energy consumption during ceramic manufacture process and to protect our environment for sustainable development. Physical and mechanical properties of fired red mud showed that the firing shrinkage, bulk density, and flexural strength increase with firing temperature. Porosity and water absorption had the same pattern and they decreased with the increase of temperature. Chemical stability reveals that 10% material loss is obtained after 7 days of treatment under acid-base conditions.

Electrospun Magnetic Nanocellulose-Polyethersulfone-Conjugated Aspergillus oryzae Lipase for Synthesis of Ethyl Valerate.

A novel greener MNC/PES membrane was developed through an electrospinning technique for lipase immobilization to catalyze the synthesis of ethyl valerate (EV). In this study, the covalent immobilization of Aspergillus oryzae lipase (AOL) onto an electrospun nanofibrous membrane consisting of magnetic nanocellulose (MNC) and polyethersulfone (PES) to produce EV was statistically optimized. Raman spectroscopy, Fourier-transform infrared spectroscopy: attenuated total reflection, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, thermal gravimetric analysis (TGA), and differential thermal gravimetric (DTG) of MNC/PES-AOL demonstrated that AOL was successfully immobilized onto the fibers. The Taguchi design-assisted immobilization of AOL onto MNC/PES fibers identified that 1.10 mg/mL protein loading, 4 mL reaction volume, 250 rpm stirring rate, and 50 °C were optimal to yield 72.09% of EV in 24 h. The thermal stability of MNC/PES-AOL was improved by ≈20% over the free AOL, with reusability for up to five consecutive esterification cycles while demonstrating an exceptional half-life of 120 h. Briefly, the electrospun MNC/PES fibers that immobilized AOL showed promising applicability in yielding relatively good EV levels. This study suggests that using MNC as fillers in a PES to improve AOL activity and durability for a longer catalytic process could be a viable option.

Preparation and Catalytic Application of 3-Methyl-1-Sulfonic Acid Imidazolium Copper (II) Trichloride for the Synthesis of 1-(α-Aminoalkyl)-2-Naphthols

3-Methyl-1-sulfonic acid imidazolium copper (II) trichloride, {[Msim]CuCl3}, as a new homologue of 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl}, was prepared and studied by several analyses such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), field emission scanning electron microscopy (FESEM) and energy dispersive X-ray analysis (EDX). [Msim]CuCl3 was tested, as an efficient catalyst, for the solvent-free preparation of some Betti bases namely 1-(α-aminoalkyl)-2-naphthols by the reaction of 2-naphthol with various aromatic aldehydes and amines such as pyrrolidine, piperidine, 1-methylpiperazine and morpholine at 100 °C to give a wide range of products.

EVALUATION OF PROPERTIES OF NON-STOICHOMETRIC ALUMINA MAGNESIA SPINEL USING THIOUREA AS FUEL BY VARYING SOAKING TIME

The present article reports a simple and cost-effective process to prepare the crystalline MgAl2O4 spinel using non-stoichometric amount of magnesium nitrate, aluminium nitrate by solution combustion route. Thiourea was used as a fuel and reducing agent while soaking was carried at 1000ºC with different soaking periods. After slow drying of mixed solutions at 80ºC for 4-5 hours a gel was formed and got characterized by DTA/TGA (Differential Thermal Analysis and Thermal Gravimetric Analysis) to observe the effect of temperature variation and identify the range of temperature where crystalline nature of the powder was noted. Powder sample was prepared from the gel after annealing at 1000ºC followed by soaking for 4 hours, 5 hours, 6 hours to compare the variation of particle size with respect to time. The calcined powders were characterized by XRD (X-ray powder diffraction) to determine the phases and crystal planes present in the sample, FT-IR (Fourier-transform infrared spectroscopy) to study the types of metal oxide or metal-metal bond present in the sample along with M-O coordination studies, FESEM (Field emission scanning electron microscopy) to observe the morphological structure of the sample, EDAX (Energy Dispersive X-Ray Analysis) to observe the percentage of each element present in the sample. Bulk densities were estimated from 2.4156 g/cm3 to 2.8571 g/cm3 and the rapid increase in apparent porosity of samples 7.4289%, 10.3630% and 32.51% for 4 hours 5 hours and 6 hours respectively were also noted. It had been observed that the average crystal size of spinel particles was about 48 nm, 36 nm, and 47 nm respectively. Finally, hardness of spinel was evaluated by Vicker Hardness test and evaluated to be10.52GPa (1073 HV), 4.087GPa (416.7HV) and 5.079 GPa (517.9HV).

Synthesis and physico-chemistry properties of a diesel-like fuel produced from waste polypropylene pyrolysis oil

In this work, pyrolysis experiments were carried out in a stainless steel semi-batch reactor to produce a diesel-like fuel from waste polypropylene (PP). Aiming to maximize the liquid oil yield, the optimal reactor operating conditions (e. g. heating rate, batch time, degradation temperature, and N2 flow rate) was obtained by the investigation of the thermal behavior of the waste PP using Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA). The waste PP pyrolysis oil was successfully purified by adsorption onto activated carbon, resulting in a colorant removal percentage of 49.56% as well as in the removal of the particle matter. The functional groups of purified waste PP pyrolysis oil (PWPO) and the Brazilian commercial S-10 diesel fuel were obtained and compared using Fourier Transform Infrared Spectroscopy (FTIR) and Gas Chromatography Coupled to Mass Spectrometry (GC-MS). According to the experimental results, the proposed thermal pyrolysis process has shown a very high liquid oil yield of about 94 wt%, and fuel heavy and light hydrocarbons were identified in PWPO. It was observed that PWPO has physico-chemistry properties similar to those of commercial S-10 diesel fuel, enhancing the high lower heating value (LHV) of about 43.06 MJ/kg. The work findings pointed out the synthetic diesel-like fuel as a promising alternative for cycle diesel engines, dropping the use of fossil fuels without reducing energy efficiency.

Electrochemical Synthesis of Yttrium Aluminum Garnet Nanostructures in the Presence of Cationic Surfactant: CTAB

In this research, pure Yttrium Aluminum Garnet (YAG, Y3Al5O12) nanostructures were synthesized through a two-step process by using chloride precursors in a solution of water–ethanol electrolyte with specific ratio. Also, the effect of cationic surfactant CTAB, on the size and the morphology of the prepared nanostructures were investigated. For the synthesis of YAG, a layer of hydroxide film was deposited on the surface of cathode via cathodic electrodeposition method and then, it was transformed to the final oxide product in the course of a thermal operation. X-Ray Diffraction (XRD) analysis was used for characterization of phase and crystal structure of prepared materials and also Fourier Transform Infra-Red spectroscopy (FTIR) was used for characterization of absorption bonds. Thermal behavior of deposited hydroxide during the thermal operation was studied by Differential Thermal Analysis and Thermal Gravimetric Analysis (DTA-TGA) technique. The morphology and particle size of obtained powder was determined by Scanning Electron Microscopy (SEM). The results of our studies showed that the cathodic electrodeposition method is a practical and very efficient method for preparation of YAG nanostructures and addition of a cationic surfactant like CTAB into the electrolyte during the electrochemical deposition can lead to the formation of smaller particles and also has an impressive effect on the homogeneity and narrower particles size distribution.

Synthesis, characterization and application of N,N,N',N'-tetramethylethylenediaminium-N-(silica-n-propyl)-N'-sulfonic acid chloride trifluoroacetate as a novel and effective catalyst for preparation of bis-coumarins

In this research, a novel material namely N,N,N',N'-tetramethylethylenediaminium-N-(silica-n-propyl)-N'-sulfonic acid chloride trifluoroacetate ([TEDSPSCT]) was synthesized, and its structure was characterized using Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive X-ray (EDS), field emission scanning electron microscopy (FE-SEM), thermal gravimetric (TG), differential thermal gravimetric (DTG) and x-ray diffraction (XRD); most of the partcles were in nano-size, and a few of them were in micro-size. Afterward, [TEDSPSCT] was used as effective and recyclable catalyst for the preparation of bis-coumarins via the reaction of 4-hydroxycoumarin (2 equivalents) with arylaldehydes (1 equivalent) under solvent-free conditions; these compounds were obtained in high yields and short reaction times. Moreover, an attractive and logical mechanism based on dual-functionality of the catalyst has been described {this catalyst has both acidic group (SO3H) and weak basic group (trifluoroacetate)}.

Mechanisms underlying the strength enhancement of UHPC modified with nano-SiO2 and nano-CaCO3

The unique physical and chemical properties of nano-particles can enhance the nature of cement-based materials at the micro-scale and nano-scale levels, leading to improved properties. To uncover the strengthening mechanism associated with various types of nano-particles, a laboratory investigation was undertaken to evaluate and compare the influence of nano-SiO2 and nano-CaCO3 on mechanical properties of ultra-high performance concrete (UHPC) made with 2% steel fibers. Each type of nano-particle was incorporated at four contents, and the mini-slump flow of the UHPC was maintained at 240–260 mm. The microstructure of the matrix and the fiber-matrix interface of UHPC, as well as the features of hydration products were characterized using advanced techniques, such as electron microscopy (SEM), X-ray diffraction (XRD), differential thermal gravimetric (DTG) analyses, 3D micro-tomography, and mercury intrusion porosimetry (MIP). Test results indicate that both the fiber-matrix strength and mechanical strength of UHPC increased with the increase of nano-SiO2 and nano-CaCO3 until threshold limits of 1% and 3.2%, respectively. The 28-d fiber-matrix bond, compressive, and flexural strengths of the optimal UHPC mixtures made with 3.2% nano-CaCO3 were approximately 40%, 10%, and 20%, respectively, greater than those of the reference mixture. These strength values were higher than those of UHPC made with 1% nano-SiO2. When used below these optimal nano-material contents, the filler and nucleation effects related of the nano-SiO2 and nano-CaCO3 promoted the strength development through improved density and homogeneity with optimized structure of hydration products, as indicated by SEM observation and DTG analysis. Beyond these limits, additional use of nano-materials resulted in increased volume of air voids and capillary pores and weak interfacial zones due to the agglomeration of nano-particles, which hindered strength development.

Poly (8-Hydroxyquinoline) Properties, Different Methods for Characterization, and New Applications for Different Uses: Review Article

Poly (8–Hydroxyquinoline) (PHQ) has been synthesized by oxidation of the 8–hydroxyquinolate. In addition, Polymeric metal has a great significance in various areas of chemistry. It has several different methods that, used for characterization as FTIR spectroscopy, 1HNMR Spectroscopic, Differential Scanning Calorimetry (DSC), Thermal Gravimetric (TG), Differential Thermal Gravimetric (DTG) have been used. The cathodic stripping voltammetric of the PHQ at the hanging mercury dropping electrode (HMDE) shows a very weak signal at negatively charged electrode potential.   Spectro analytical Sensitivity for PHQ coordination polymers with different metal ions have been calculated. Potentiometric Studies of a Polymeric and Coordination Polymeric Form of 8- Hydroxyquinoline. Cation exchange properties have been researched by spectrophotometric technique. Immobilization of Monomeric, Polymeric and Polymeric Chelates Forms of (8-Hydroxyquinoline) Matrix incorporated in Aluminum Oxide used to be studied. Also, Immobilization of Monomeric, Polymeric and Polymeric Chelates Forms of (8-Hydroxyquinoline) Matrix into Silica Gel has been carried out.  Various applications for previous studies in different areas can be used as: Analytical Application, Preconcentration of some metal Ions, and get a patent about Poly(8-Hydroxyquinoline) immobilized on some substance as risen for removal of metal ion. 

Ultrasonic assisted preparation of some new zinc complexes of a new tetradentate Schiff base ligand: thermal analyses data, antimicrobial and DNA cleavage potential

AbstractA new tetradentate Schiff base ligand (L) (L = obtained by condensation reaction between triethylenetetraamine and (E)‐3‐(2‐nitrophenyl)acrylaldehyde) and some of its zinc (II) complexes formulated as ZnLX2 in which X = halide/pseudohalide were synthesized and characterized by some physical and spectral techniques such as infra‐red (IR), nuclear magnetic resonance (NMR), UV–Visible, microanalyses, and conductivity measurements. Among the complexes, zinc chloride, iodide, and nitrate complexes were also prepared as nanostructure powder under sonication conditions confirmed by x‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive x‐ray analysis (EDAX). Moreover, zinc oxide nanoparticles were prepared by direct thermolysis of nanopowder of ZnLI2 complex under air atmosphere. Moreover, the thermal behaviors of the compounds were studied based on thermo‐gravimetric (TG)/differential thermal gravimetric (DTG)/differential thermal analyses (DTA) analyses data under nitrogen atmosphere. Furthermore, antibacterial/antifungal activities of the ligand and its zinc complexes were screened by the well diffusion method against some bacteria and funguses. Ultimately, the DNA cleavage potential of the compounds was evaluated by gel electrophoresis technique.

Modification of Mineral Powder by Various Organic Materials: Their Potential as Reinforcement for Unsaturated Polyester Composites

Industrial by product dumped from iron making industry (slag) has been modified by various chemical agents, particularly, paraffin wax, liquid nitrile butadiene rubber (NBR) and silane coating agent. The modified slag powder samples were characterized by differential scanning calorimeter (DSC), thermogravimetric analysis (TGA) and the corresponding differential thermal gravimetric (DTG). As further evidence on the effectiveness of the modification process, the modified slag samples were subjected to attenuated total reflectance infrared spectroscopy (ATR-IR). The potential of the modified slag as reinforcement for unsaturated polyester (UPE) composites were studied. The mechanical and dynamic mechanical properties of the fabricated composites were inspected as a function of modification type.

Synthesis and characterization of a novel organic–inorganic hybrid salt and its application as a highly effectual Brønsted–Lewis acidic catalyst for the production of N,N′‐alkylidene bisamides

In this research, a novel organic–inorganic hybrid salt, namely, N1,N1,N2,N2‐tetramethyl‐N1,N2‐bis(sulfo)ethane‐1,2‐diaminium tetrachloroferrate ([TMBSED][FeCl4]2) was prepared and characterized by Fourier‐transform infrared spectroscopy (FT‐IR), energy‐dispersive X‐ray spectroscopy (EDX), elemental mapping, field emission scanning electron microscopy (FE‐SEM), X‐ray diffraction (XRD), thermal gravimetric (TG), differential thermal gravimetric (DTG), and vibrating‐sample magnetometry (VSM) analyses. Catalytic activity of the hybrid salt was tested for the synthesis of N,N′‐alkylidene bisamides through the reaction of benzamide (2 eq.) and aromatic aldehydes (1 eq.) under solvent‐free conditions in which the products were obtained in high yields and short reaction times. The catalyst was superior to many of the reported catalysts in terms of two or more of these factors: the reaction medium and temperature, yield, time, and turnover frequency (TOF). [TMBSED][FeCl4]2 is a Brønsted–Lewis acidic catalyst; there are two SO3H groups (as Brønsted acidic sites) and two tetrachloroferrate anions (as Lewis acidic sites) in its structure. Highly effectiveness of the catalyst for the synthesis of N,N′‐alkylidene bisamides can be attributed to synergy of the Brønsted and Lewis acids and also possessing two sites of each acid.

Utilization of olive pomace in nano MgO modification for sorption of Ni(II) and Cu(II) metal ions from aqueous solutions

Magnesium oxide nanoparticles were synthesized and modified by olive pomace (NMOOP700) as a novel sorbent and characterized using Fourier Transform Infrared Spectra, Scanning Electron Microscope, Transmission Electron Microscope, X-ray Diffraction, Differential Thermal Analysis and Thermal Gravimetric Analysis. Sorption of Cu (II) or Ni (II) ions were achieved taking into account important parameters including initial pH of the medium, contact time, initial metal ion concentration and temperature. A comparative study between Magnesium oxide nanoparticles and NMOOP700 material for the sorption of Cu (II) or Ni (II) ions was implemented. The obtained data revealed that the sorption process is significantly improved using NMOOP700. The monolayer capacity of Ni (II) and Cu (II) metal ions on NMOOP700 at pH 5 were found to be 149.93 ± 4.4 and 186.219 ± 6.3 mg/g, respectively. Findings of the present work highlight the potential use of NMOOP700 as a novel and effective sorbent material for the removal of Cu (II) or Ni (II) ions from the liquid phase.