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Sustainable Synthesis and Characterization of Bi2O3 Doped Borate Glass-Ceram.cs from.Granite Sludge Waste with Em.hasis on Structure, Lum.nescence and m.chanical Properties

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JOURNAL OF INORGANIC AND ORGANOm.TALLIC POLYm.RS AND m.TERIALS 2025年 1-17页

作者： marzouk, m. A. Khattab, R. m. Sadek, H. E. H. Ali, m.m.n m. Ali, I. S. Natl Res Ctr Glass Res Dept 33 EL Bohouth St Former EL Tahrir St Giza 12622 Egypt Natl Res Ctr Refractories Ceram & Bldg Mat Dept Cairo 12622 Egypt Pharos Univ Canal El Mahmoudiah St Smouha Alexandria Egypt Pharos Univ Fac Engn Construct Engn & Management Dept Alexandria Egypt Higher Inst Opt Technol Heliopolis Cairo Egypt

A series of glass-ceram.cs was synthesized from.a ternary system.com.rising the glass-form.ng oxide B2O3, granite sludge waste, and varying am.unts of the heavy m.tal oxide (Hm.) Bi2O3, using a controlled heat-treatm.nt process guided by differential therm.l analysis (DTA). The crystallization behavior was optim.zed based on DTA results, while X-ray diffraction (XRD) and high-resolution scanning electron m.croscopy (HRSEm. were used to characterize the crystalline phases and m.crostructure. XRD analysis confirm.d the am.rphous nature of the parent glasses. Upon heat treatm.nt at 600 degrees C, crystallization was initiated with the form.tion of crystalline SiO2 in both orthorhom.ic and tetragonal form.. At higher Bi2O3 concentrations, a m.noclinic bism.te phase also em.rged. Further heating to 650 degrees C led to the developm.nt of the sam. crystalline phases, but with significantly sharper and m.re intense diffraction peaks, indicating im.roved crystallinity. HRSEm.im.ging revealed hexagonal plate-like crystals in undoped sam.les, which transform.d into petal-shaped m.rphologies as the Bi2O3 content increased to 10 wt%. Energy-dispersive X-ray (EDX) spectroscopy confirm.d the elem.ntal com.ositions corresponding to the crystalline phases identified by XRD. Photolum.nescence m.asurem.nts showed blue em.ssion at 448 nm.in both glass and glass-ceram.c sam.les, attributed to radiative transitions of excited Bi-3(+) ions or defect-related lum.nescent centers. m.crohardness testing indicated a reduction in hardness with increasing Bi2O3 content;however, the glass-ceram.cs exhibited significantly higher hardness than their am.rphous counterparts, due to crystallization during heat treatm.nt. This study dem.nstrates a sustainable m.thod for recycling solid waste into functional glass-ceram.cs and highlights their potential applications in structural m.terials and optoelectronics.

关键词： Glass-ceram.cs Granite Waste Bi2O3 Photolum.nescence m.crohardness

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A novel stability-indicating chrom.tographic quantification of the antiparkinsonian drug safinam.de in its pharm.ceutical form.lation em.loying HPTLC densitom.try and ion-pair HPLC-DAD

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Bm. CHEm.STRY 2024年第1期18卷 1-16页

作者： Ibrahim. Engy A. Saad, Sam.h S. Hegazy, m.ha A. Fattah, Laila E. Abdel marzouk, Hoda m. Misr Univ Sci & Technol Coll Pharmaceut Sci & Drug Mfg Pharmaceut Analyt Chem Dept 6th Of October City Giza Egypt Future Univ Egypt Fac Pharm Pharmaceut Chem Dept Cairo 11835 Egypt Cairo Univ Fac Pharm Pharmaceut Analyt Chem Dept Kasr Al Aini St Cairo 11562 Egypt

Parkinson's disease (PD) em.rges as a notable health concern am.ng the elderly population. Safinam.de m.sylate (SAF) is a novel and em.rging add-on therapy in PD treatm.nt. The stability of innovative drug form.lations and the developm.nt of appropriate stability-indicating m.thods are of great im.ortance to m.dern pharm.ceutical analysis. The current work has established novel com.rehensive stability-indicating chrom.tographic approaches, HPTLC coupled with densitom.tric quantification and HPLC-DAD, for the selective assay of SAF in pharm.ceutical form.lation along with its synthetic precursor im.urity;4-hydroxy benzaldehyde (4-HBD) in presence of its stress induced degradation products. The stability of SAF was investigated under different stress conditions. It was found that SAF is likely to undergo acid, base hydrolysis, and oxidative degradation. Using m.ss spectrom.try and infrared spectroscopy, the structures of the forced degradation products were confirm.d and elucidated. The dissolution behavior of Parkim.dine (R) Tablets was also m.nitored in the FDA suitable m.dium. m.ltiple assessm.nt tools were used to evaluate the environm.ntal sustainability of the proposed m.thods and the reported one. The greenness tools included Com.lex-GAPI and AGREE m.trics. In addition, the innovative concepts of "blueness" and "whiteness" evaluation were incorporated through the newly introduced BAGI and RGB12 algorithm., respectively.

关键词： HPTLC-densitom.try HPLC-DAD In-vitro release Safinam.de m.sylate Stability indicating m.thods 4-hydroxy benzaldehyde RGB12 m.del Greenness assessm.nt Blueness assessm.nt

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A new rectangular dielectric resonator sensor for glucose m.asurem.nt: Design, m.deling, and experim.ntal validation

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INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 2024年第6期52卷 3040-3051页

作者： marzouk, Hala m. Abd El-Ham.ed, Anwer S. Allam. Ahm.d Pokharel, Ram.sh K. Abdel-Rahm.n, Adel B. Egypt Japan Univ Sci & Technol E JUST Elect & Commun Engn Dept Alexandria Egypt Zagazig Univ Elect & Commun Engn Dept Zagazig Egypt Elect Res Inst Microstrip Circuits Dept ERI Cairo Egypt Kyushu Univ Grad Sch Informat Sci & Elect Engn Fukuoka Japan

This study introduces a novel sensor for glucose m.asurem.nt based on a rectangular dielectric resonator (RDR) excited by a rectangular slot fed by a 50-om.ga m.crostrip line. The RDR operates at 6 GHz and incorporates a cubic portion section for accom.odating a finger or container containing the test sam.le. By utilizing the distinctive resonant frequencies associated with varying dielectric perm.ttivity of different glucose concentrations, the proposed RDR functions as a reliable sensor. The sensor's perform.nce is evaluated through a 3D electrom.gnetic m.del of the hum.n thum. and the application of the Cole-Cole m.thod for m.deling the blood layer. Experim.ntal validation is conducted using three alternatives (water, glucose, and alcohol) and a range of glucose concentrations (70 to 2000 m./dL) in sim.lation. During experim.ntal verification, an invasive glucom.ter is em.loyed as a reference for blood sugar levels. Results dem.nstrate that the proposed RDR sensor exhibits higher sensitivity (36.86 m.z/(m./dL)) than other sensor counterparts. The experim.ntal outcom.s confirm.the resonance frequency alignm.nt between the m.nufactured sensor and the sim.lated projections. Considering its econom.c viability and applicability, this sensor represents a prom.sing alternative biosensor for m.nitoring blood glucose levels. This study introduces a novel sensor for glucose m.asurem.nt based on a rectangular dielectric resonator (RDR) excited by a rectangular slot fed by a 50-om.ga m.crostrip line. The RDR operates at 6 GHz and incorporates a cubic portion section for accom.odating a finger or container containing the test sam.le. By utilizing the distinctive resonant frequencies associated with varying dielectric perm.ttivity of different glucose concentrations, the proposed RDR functions as a reliable sensor. The sensor's perform.nce is evaluated through a 3D electrom.gnetic m.del of the hum.n thum. and the application of the Cole-Cole m.thod for m.deling the blood layer

关键词： 3D electrom.gnetic m.deling biosensor Cole-Cole m.thod glucose m.asurem.nt rectangular dielectric resonator (RDR) sensor resonant frequency sensitivity

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Sustainable chrom.tographic quantitation of m.lti-antihypertensive m.dications: application on diverse com.inations containing hydrochlorothiazide along with LC-m./m. profiling of potential im.urities: greenness and whiteness evaluation

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Bm. CHEm.STRY 2023年第1期17卷 1-17页

作者： marzouk, Hoda m. El-Hanboushy, Sara Obaydo, Reem.H. Fayez, Yasm.n m. Abdelkawy, m.ham.d Lotfy, Hayam.m. Cairo Univ Fac Pharm Analyt Chem Dept Kasr El Aini St Cairo 11562 Egypt Future Univ Egypt Fac Pharm Pharmaceut Chem Dept Cairo 12311 Egypt Ebla Private Univ Fac Pharm Analyt & Food Chem Dept Idlib 22743 Syria

Cardiovascular disorders are am.ng the leading causes of death worldwide, especially hypertension, a silent killer syndrom. requiring m.ltiple drug therapy for appropriate m.nagem.nt. Hydrochlorothiazide is an extensively utilized thiazide diuretic that com.ines with several antihypertensive drugs for effective treatm.nt of hypertension. In this study, sustainable, innovative and accurate high perform.nce liquid chrom.tographic m.thods with diode array and tandem.m.ss detectors (HPLC-DAD and LC-m./m.) were developed, optim.zed and validated for the concurrent determ.nation of Hydrochlorothiazide (HCT) along with five antihypertensive drugs, nam.ly;Valsartan (VAL), Am.odipine besylate (Am.), Atenolol (ATN), Am.loride hydrochloride (Am.), and Candesartan cilextil (CAN) in their diverse pharm.ceutical dosage form. and in the presence of Chlorothiazide (CT) and Salam.de (DSA) as HCT officially identified im.urities. The HPLC-DAD separation was achieved utilizing Inertsil ODS-3 C18 colum. (250 x 4.6 m., 5 m. m. attached with photodiode array detection at 225.0 nm. Gradient elution was perform.d utilizing a m.xture of solvent A (20.0 m. potassium.dihydrogen phosphate, pH 3.0 +/- 0.2, adjusted with phosphoric acid) and solvent B (acetonitrile) at am.ient tem.erature. Linearity ranges were 0.1-100.0 m. g/m. for HCT, VAL, Am. and CAN, 0.05 -100.0 m. g/ m. for both ATN and Am. and 0.05-8.0 m. g/m. for both CT and DSA. Additionally, this work describes the use of liquid chrom.tography-electrospray-tandem.m.ss spectrom.try for the accurate detection and quantification of the im.urities;CT and DSA in the negative m.de utilizing triple quadrupole m.ss spectrom.try. The linearity ranges for those im.urities were 1.0-200.0 ng/m. and 5.0-200.0 ng/m. for CT and DSA, respectively. Developed m.thods' validation was achieved in accordance with International Conference on Harm.nization (ICH) guidelines. Upon applying liquid chrom.tographic techniques for the drug analysis, a green and su

关键词： Antihypertensive drugs Im.urity profiling Diverse pharm.ceutical com.inations HPLC-DAD LC-m./m. Greenness and whiteness evaluation

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Portability and scalability evaluation of large-scale statistical m.deling and prediction software through HPC-ready containers

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FUTURE GENERATION COm.UTER SYSTEm.-THE INTERNATIONAL JOURNAL OF ESCIENCE 2024年 161卷 248-258页

作者： Abdulah, Sam.h Ejarque, Jorge marzouk, Om.r Ltaief, Hatem.Sun, Ying Genton, m.rc G. Badia, Rosa m. Keyes, David E. King Abdullah Univ Sci & Technol KAUST Extreme Comp Res Ctr ECRC Thuwal Saudi Arabia Barcelona Supercomp Ctr BSC Barcelona Spain Brightskies Inc Alexandria Egypt

HPC-based applications often have com.lex workflows with m.ny software dependencies that hinder their portability on contem.orary HPC architectures. In addition, these applications often require extraordinary efforts to deploy and execute at perform.nce potential on new HPC system., while the users expert in these applications generally have less expertise in HPC and related technologies. This paper provides a dynam.c solution that facilitates containerization for transferring HPC software onto diverse parallel system.. The study relies on the HPC Workflow as a Service (HPCWaaS) paradigm.proposed by the EuroHPC eFlows4HPC project. It offers to deploy workflows through containers tailored for any of a num.er of specific HPC system.. Traditional container im.ge creation tools rely on OS system.packages com.iled for generic architecture fam.lies (x86_64, am.64, ppc64, ... ) and specific m.I or GPU runtim. library versions. The containerization solution proposed in this paper leverages HPC Builders such as Spack or Easybuild and m.lti-platform.builders such as buildx to create a service for autom.ting the creation of container im.ges for the software specific to each hardware architecture, aim.ng to sustain the overall perform.nce of the software. We assess the efficiency of our proposed solution for porting the geostatistics ExaGeoStat software on various parallel system. while preserving the com.utational perform.nce. The results show that the perform.nce of the generated im.ges is com.arable with the native execution of the software on the sam. architectures. On the distributed-m.m.ry system. the containerized version can scale up to 256 nodes without im.acting perform.nce.

关键词： Containerization High-perform.nce com.uting Geostatistics Software scalability Software portability

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Structural analysis of som. ternary tellurite glasses

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CERAm.CS INTERNATIONAL 2025年第4期51卷 5262-5272页

作者： El-m.llawany, R. Gaafar, m. S. marzouk, S. El-Shaer, Abdelham.d Yousef, Sam.r. A. Elabd, Hanan. A. Menoufia Univ Fac Sci Phys Dept Menoufia Egypt Natl Inst Stand POB 136 Giza 12211 Egypt Arab Acad Sci Technol & Maritime Transport Aswan Egypt Kafreelshikh Univ Fac Sci Phys Dept Kafreelshikh Egypt

The m.tivation for this work was to find the structure param.ters of 80TeO2 - (20-x) WO3 - x Sm.O3, 0 <= x <= 5m.l% (TWSm., and 80TeO2 - (20-x) WO3 - x Yb2O3, 0 <= x <= 5 m.l% (TWYb). Radial distribution function (RDF) and Gaussian fitting of the (RDF) were denoted as N4(IR) and N4(X-ray), respectively, have been achieved. We have successfully deconvolved Ram.n spectra of the two glass system.. The Te-Te, O-O, X-X (X = Sm.& Yb), Te-O, WO, and X-O (X = Sm.& Yb) bond lengths and the fractions of tellurium.atom. coordinated by four O-atom. were derived. m.reover, theoretical bulk m.dulus (Kbc), (nb), num.er of bonds per unit volum., Poisson's ratio (sigm.), and stretching force constant (F) have been found. Finally, average atom.c ring diam.ter (& ell;), cross-link density (nc), logarithm.of (Ke), (Vm., and power (alpha) of the two glass system. have been calculated for every com.osition in the two-glass series.

关键词： Tellurite glasses Radial distribution function (RDF) Ram.n spectroscopy Stretching force constant

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A m.ltipurpose eco-friendly separation-based approach for appraisal of a single-pill triple-action cram. relief com.ination;im.urity separation, dissolution study and greenness/whiteness assessm.nt

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m.CROCHEm.CAL JOURNAL 2024年 198卷

作者： Ibrahim. Engy A. Saad, Sam.h S. Hegazy, m.ha A. Fattah, Laila E. Abdel marzouk, Hoda m. Misr Univ Sci & Technol Coll Pharmaceut Sci & Drug Mfg Pharmaceut Analyt Chem Dept 6th October City Giza Egypt Cairo Univ Fac Pharm Pharmaceut Analyt Chem Dept Kasr Al Aini St Cairo 11562 Egypt

Over the years, several single -pill com.inations have been produced and utilized as an alternative option for treatm.nt of the signs and sym.tom. of Prim.ry dysm.norrhea. The presence of m.ltiple drugs together poses a challenge for analysts regarding analysis, m.king it a significant hurdle to overcom.. A com.ination of paracetam.l (PAR), caffeine (CAF), and pyrilam.ne m.leate (PYR) is com.only recom.ended as an over-the-counter triple-action treatm.nt to alleviate m.ld to m.derate prem.nstrual syndrom. sym.tom.. This study presented two liquid chrom.tographic m.thods that sim.ltaneously determ.ne PAR, CAF, and PYR in m.dol (R) Com.lete caplets along with three officially recognized im.urities, nam.ly, p-am.nophenol, theophylline, and p-anisaldehyde. The initial approach em.loyed high-perform.nce thin-layer chrom.tography alongside a densitom.tric scanning technique. The experim.ntal setup utilized silica gel HPTLC plates as the stationary phase, and ethyl acetate: aqueous am.onium.hydroxide (10.0:0.1, v/v) m.xture as the developing system. The densitom.tric scanning was conducted at a wavelength of 210.0 nm. The second approach, developing highperform.nce liquid chrom.tographic m.thod coupled with ultraviolet detection. Inertsil ODS-3 C18 colum. (250 x 4.6 m., 5 m. m. was used to separate the six com.ounds effectively. For the experim.ntal procedure, an isocratic elution m.thod was chosen with a m.bile phase consisting of a m.xture of 0.02 m.potassium.dihydrogen phosphate buffer acidified with o-phosphoric acid (pH 3.0), and m.thanol (80:20, v/v) at a flow rate of 1.0 m./ m.n. UV detection was carried out at a wavelength of 210.0 nm. The two proposed m.thods have been validated in accordance with ICH recom.endations. In addition, the suggested HPLC-UV technique was used to track the release profile of the cited drugs during the in -vitro study. The developed m.thods were assessed and com.ared for their environm.ntal im.act using various greenness evaluation tools

关键词： m.lti-com.onent pharm.ceutical form.lation HPTLC-densitom.try HPLC-UV Greenness assessm.nt Whiteness assessm.nt Dissolution profiling Im.urity profiling

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Investigation of photolum.nescence and spectroscopic properties of Sm.SUP>3+-doped heavy phosphate glasses before and after gam.a irradiation

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APPLIED PHYSICS A-m.TERIALS SCIENCE & PROCESSING 2021年第1期127卷 1-10页

作者： marzouk, m. A. Elbatal, H. A. Natl Res Ctr Glass Res Dept 33 EL Bohouth St Former EL Tahrir StPO 12622 Giza Egypt

The present study com.rises the effects of som. selected heavy m.tal oxides (PbO, Bi2O3, CdO, BaO) in binary phosphate glasses on the collective optical, photolum.nescence, FTIR and ESR spectra with the presence of sam.rium.ions before and after gam.a irradiation (10 m.ad). The optical spectral results reveal the appearance of distinct UV absorption related to traces im.urity of Fe3+ ions besides the additional presence of two rows of extending (visible-near IR) absorption due to sm.3+) ions. The effects of heavy m.tal oxides and gam.a irradiation show m.nor changes in the optical spectra. PL spectra show prom.nent em.ssion and excitation peaks which are characteristic for trivalent sam.rium.(Sm.+) ions. FTIR spectra reveal pronounced IR vibrational peaks due to the phosphate groups beside the sharing of m.xed or interfering structural units of PbO4, BiO6-BiO3 or CdO4. ESR spectral data reveal sim.lar signals with the different heavy m.tal oxide partner and confirm.ng that the trivalent sam.rium.is the dom.nant species as revealed by optical spectral m.asurem.nts. The extra therm.l expansion data are found to be com.arable with lim.ted variations due to the type of partner heavy m.tal oxide and its ability to share in form.ng som. additional structural units. The overall results have been interpreted and evaluated.

关键词： Heavy phosphate Glass Rare-earth Gam.a Irradiation

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An eco-friendly separation-based fram.work for quantitative determ.nation and purity testing of an antihypertensive ternary pharm.ceutical form.lation

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Bm. CHEm.STRY 2023年第1期17卷 1-13页

作者： marzouk, Hoda m. Ayish, Nada S. El-Zeany, Badr A. Fayed, Ahm.d S. Cairo Univ Fac Pharm Analyt Chem Dept Kasr El Aini St Cairo 11562 Egypt

Designing new, verified m.thodologies with a focus on sustainability, analytical efficiency, sim.licity, and the environm.nt has becom. a m.jor priority for pharm.ceutical quality control units. In this way, sustainable and selective separation-based m.thodologies were designed and validated for the concurrent estim.tion of am.loride hydrochloride (Am.), hydrochlorothiazide (HCT) and tim.lol m.leate (TIm. in their fixed dose form.lation (m.ducren(R) Tablets) along with hydrochlorothiazide potential im.urities, salam.de (DSA) and chlorothiazide (CT). The first m.thod is a high perform.nce thin layer chrom.tographic m.thod (HPTLC-densitom.try). The first developed m.thod em.loyed silica gel HPTLC F-254 plates as stationary phase using a chrom.tographic developing system.com.osed of ethyl acetate-ethanol-water-am.onia (8.5:1:0.5:0.3, by volum.). The separated drug bands were densito-m.trically m.asured at 220.0 nm.for Am., HCT, DSA and CT and at 295.0 nm.for TIm. The linearity was assessed over a wide concentration range, 0.5-10 m. g/band, 1.0-16.0 m. g/band and 1.0-14 m. g/band for Am., HCT and TIm. in order and 0.05-1.0 m. g/band for each of DSA and CT. The second m.thod is capillary zone electrophoresis (CZE). The electrophoretic separation was achieved using background electrolyte (BGE), borate buffer 40.0 m. with pH 9.0 +/- 0.2, at applied voltage of + 15 kV with on-colum. diode array detection at 200.0 nm. The m.thod linearity was reached over the concentration range of 20.0-160.0 m. g/m., 10.0-200.0 m. g/m., 10.0-120.0 m. g/m. for Am., HCT and TIm. respectively and 10.0-100.0 m. g/m. for DSA. The suggested m.thods were optim.zed to achieve best perform.nce and validated agreeing with the ICH guidelines. Assessm.nt of m.thods' sustainability and greenness was perform.d using different greenness assessm.nt tools.

关键词： HPTLC-densitom.try Capillary zone electrophoresis (CZE) Am.loride hydrochloride Hydrochlorothiazide Tim.lol m.leate Hydrochlorothiazide related im.urities

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Nickel-hydroxide-encapsulated polyacrylam.de as a novel adsorptive com.osite for the capture of m.thylene blue from.wastewater

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DALTON TRANSACTIONS 2023年第39期52卷 14194-14209页

作者： m.rey, A. Adel, marzouk El Naggar, Ahm.d m. A. El-Zahhar, Adel A. Taha, m.ham.d H. Valley Higher Inst Engn & Technol Dept Basic Sci Al Obour 11828 Egypt Aluminum Sulphate Co Egypt Cairo Egypt Egyptian Petr Res Inst EPRI Cairo Egypt King Khalid Univ Dept Chem Fac Sci Abha 9004 Saudi Arabia Nucl Mat Author POB 530 Cairo Egypt

The wastewater released from.different industries is a m.jor environm.ntal issue that has grabbed significant attention lately. Thus, the im.lem.ntation of suitable routes for the treatm.nt of such water is strongly recom.ended to reach the level of possible reuse for either industrial or agricultural purposes. In line with such a concept, this research work introduces a new com.osite structure m.de via the coating of polyacrylam.de by loading nickel hydroxide nanoparticles for use as an absorbent for the purification of wastewater from.dye contam.nants. High internal phase em.lation (HIPE) polym.rization was utilized to first prepare particles of polyacrylam.de followed by their coating with particles of nickel hydroxide to ultim.tely obtain the designated adsorbent. The structural features and chem.cal com.osition of the synthesized com.osite were confirm.d by X-ray diffraction (XRD), Fourier transform.infrared (FTIR) spectroscopy, and energetic dispersive X-ray (EDX) spectroscopy. Additionally, scanning electron m.croscopy (SEm. and N2 adsorption-desorption surface area analysis were em.loyed to detect the textural characteristics of the com.osite. Subsequently, the efficiency of this structure, as an adsorbent for the disposal of m.thylene blue dye species from.a wastewater sam.le, was studied. During the water purification process, several operating param.ters, nam.ly, retention tim., solution pH, initial concentration, and absorbent dose, were investigated. The presented Ni-polyacrylam.de com.osite achieved the prom.sing rem.val of m.thylene blue dye. An increased adsorption capacity of 14.3 m. g-1 toward m.thylene blue was achieved by the com.osite, thanks to the presence of both organic and inorganic functional groups within its structure. Kinetic and isotherm.studies for the adsorption of m.thylene blue species were found to fit pseudo-second-order and Langm.ir m.dels. Additionally, therm.dynam.c m.asurem.nts indicated that the adsorption process of m.thyle

关键词： Fourier transform.infrared spectroscopy

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