Article
Chemistry, Multidisciplinary
Linda Hevira, Zilfa, Rahmayeni, Joshua O. Ighalo, Hermansyah Aziz, Rahmiana Zein
Summary: This study demonstrated that using Terminalia catappa shells as biosorbent can effectively remove methylene blue from aqueous solutions, with a maximum adsorption capacity of 88.62 mg g(-1), and is applicable to real wastewater samples, which can be reused multiple times.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Environmental Sciences
Wei Gao, Yufeng Li, Jitao Zhao, Zhe Zhang, Weiwei Tang, Jun Wang, Zhenyu Wu
Summary: Reduced graphene oxide (rGO)/TiO2 nanocomposites, synthesized through a hydrothermal technique, were used as photocatalysts to effectively degrade methylene blue (MB) in industrial dyestuff wastewater. The degradation efficiency of the nanocomposites for MB was as high as 98.18% at 5wt.% rGO content, 0.4 g L-1 rGO/TiO2 content, pH 6, and 60 mg L-1 MB concentration. The photocatalytic degradation mechanism involved immediate oxidative degradation and the combined action of O-2(center dot-), OH(center dot), and h(+) species. The degradation kinetic of the nanocomposites for MB followed a first-order model under UV irradiation.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Biochemistry & Molecular Biology
Roshni D. Hingrajiya, Manish P. Patel
Summary: The present research focuses on the fabrication and characterization of magnetic Fe3O4 incorporated chitosan grafted acrylamide and N-vinylimidazole composite hydrogels (CANFe-1 to CANFe-7). The swelling study showed that CANFe-4 had the highest swelling efficiency, thus it was chosen for the subsequent removal studies. The pH sensitive adsorptive removal of cationic dye (methylene blue) was dominant at pH = 8, with a maximum adsorption capacity of 860 mg/g. The CANFe-4 composite hydrogel can be conveniently separated from the solution using an external magnet, making it a promising adsorbent for wastewater treatment.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Shuyang Chen, Mei Zhang, Hanjie Chen, Ying Fang
Summary: In this study, raw talc powder was surface modified using two different methods: acid washing and ball milling. XRD, FTIR, and SEM were used to characterize the modified talc. Adsorption experiments were conducted using methylene blue (MB) as the target contaminant, and the findings showed that both modifications increased the adsorption capacity of talc. The results indicate that modified talc can be an inexpensive and abundant candidate material for dye adsorption in industrial wastewater.
Article
Environmental Sciences
Ahmed Abutaleb, Mohd Imran, Nasser Zouli, Afzal Husain Khan, Shahir Hussain, Mohammad Ashraf Ali, Omer Bakather, Mohammad Ashraf Gondal, Nadeem A. Khan, Hitesh Panchal, Sasan Zahmatkesh
Summary: The contamination of water due to the presence of dyes is a serious health problem that requires treatment. A tailored co-precipitation technique was successfully used to prepare Fe3O4-multiwalled Carbon Nanotubes (MWCNTs)-Bentonite nanocomposite. The synthesized nanocomposite showed high adsorption capacity and was determined to be a promising candidate for water treatment.
Article
Chemistry, Physical
Thuong Thi Nguyen, Bich Ngoc Hoang, Thuan Van Tran, Dai Van Nguyen, Duy Nguyen Trinh, Dai-Viet N. Vo
Summary: The study introduced a method of preparing AMP-MMT composites for dye adsorption, exhibiting high adsorption capacity, recyclability, and potential application in water purification. The mechanisms, operating parameters, and performance of the composite membrane were investigated, providing insights into eco-friendly and biodegradable materials for environmental protection.
SURFACES AND INTERFACES
(2021)
Article
Polymer Science
Yiming Zhou, Te Li, Juanli Shen, Yu Meng, Shuhua Tong, Qingfang Guan, Xinxing Xia
Summary: This study focused on the effective removal of methylene blue dyes from aqueous solutions using a novel magnetic polymer nanocomposite, which showed high adsorption capacity at neutral pH. The physico-chemical properties, adsorption performance, and adsorption mechanisms were analyzed, with the nanosorbent demonstrating good reusability over multiple sorption/desorption cycles.
Article
Materials Science, Multidisciplinary
Youssef Ettahiri, Lahcen Bouna, John Hanna, Abdeljalil Benlhachemi, Hannah L. Pilsworth, Abdessalam Bouddouch, Bahcine Bakiz
Summary: This study synthesized and characterized porous geopolymer systems using a naturally occurring Moroccan pyrophyllite clay. The geopolymer matrix was formed through alkaline activation of metakaolin, with little contribution from pyrophyllite. Pyrophyllite played a role in promoting the formation of disordered and heterogeneous geopolymers and pores. The structures and morphologies of the raw clay, calcined meta-pyrophyllite, and prepared geopolymer samples were analyzed using various techniques. The specific surface area and pore volume of the geopolymer samples significantly increased compared to the raw clay. Adsorption experiments showed that the chemisorption of MB molecules onto the geopolymer specimen was spontaneous, irreversible, and endothermic, with a high quantity of adsorbed molecules.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Suhad Abdulrahman Yasin, Samie Yaseen Sharaf Zeebaree, Aymn Yaseen Sharaf Zeebaree, Osama Ismail Haji Zebari, Ibtisam Abdulmajeed Saeed
Summary: The research investigates the application of green methods in producing nanocomposites, utilizing electrospinning techniques and natural plant extract to synthesize copper nanoparticles. The produced CuO/PET nanocomposites exhibit high surface area, well-distributed elements, and efficient photocatalytic removal of toxic dyes in aqueous solutions. The study demonstrates that the photocatalytic efficiency for removing dyes is achieved in a short time under low-intensity UV light irradiation.
Article
Biochemistry & Molecular Biology
Anca Andreea Turcanu, Ecaterina Matei, Maria Rapa, Andra Mihaela Predescu, Andrei-Constantin Berbecaru, George Coman, Cristian Predescu
Summary: This research focuses on exploring the performance of eco-friendly carbon materials, specifically in the hydrothermal carbonization process using walnut shell biowaste. The study reveals that these materials possess promising properties for the removal of pharmaceutical pollutants from water sources. Among the hydrochars tested, HCWS3 demonstrates the highest adsorption efficiency. Future perspectives include the activation of hydrochars and testing them on other emerging pharmaceutical pollutants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Water Resources
Nadjib Benosmane, Baya Boutemeur, Safouane M. Hamdi, Maamar Hamdi
Summary: In this study, polymer inclusion membranes (PIMs) containing Cellulose triacetate as polymer base, 2-NPOE as a plasticizer, and Calix[4]resorcinarene (RC8) as a carrier were prepared and characterized. The content of the carrier and plasticizer in the membrane were found to significantly affect the properties of PIMs. The membrane showed better stability under optimum conditions, and the transport of Methylene Blue (MB) dye followed the first-order kinetics equation.
APPLIED WATER SCIENCE
(2022)
Article
Environmental Sciences
Dalia Abdrabou, Mohamed Ahmed, Ali Hussein, Tharwat El-Sherbini
Summary: Efficient cleaning of contaminated water by photocatalysis has become an important strategy for environmental protection. The combination of CdS with Gd2O3 and GO has been found to enhance the photocatalytic efficiency. Under visible light irradiation, the removal efficiency of Gd2O3@CA, CdS/Gd2O3@CA, and CdS/Gd2O3/GO@CA is 41.02%, 54.71%, and 71.42%, respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agricultural Engineering
Yue Zhang, Yulin Zheng, Yicheng Yang, Jinsheng Huang, Andrew R. Zimmerman, Hao Chen, Xin Hu, Bin Gao
Summary: Ball milling and H2O2 modification significantly increased the specific surface area of biochar and enhanced its adsorption efficiency towards methylene blue. The modified biochar had more oxygen-containing functional groups, leading to a faster adsorption rate for methylene blue.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ahmed Abdi Hassan, Muhammad Sajid, Abdulkadir Tanimu, Ismail Abdulazeez, Khalid Alhooshani
Summary: In this study, an ionic liquid 1-naphthylammonium tetrachloroferrate (III) was synthesized and used as a solid adsorbent for the removal of methylene blue and rose bengal dyes from aqueous solutions. Experimental results showed strong adsorption capacity of the adsorbent for the dyes, suggesting its potential application in dye removal processes.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Polymer Science
Giannin Mosoarca, Simona Popa, Cosmin Vancea, Mircea Dan, Sorina Boran
Summary: In this study, raspberry leaves were converted into powder and used as a new low-cost adsorbent for removing methylene blue from aqueous solutions. Various techniques were applied for characterizing the adsorbent, and the effects of pH, ionic strength, contact time, adsorbent dose, initial concentration, and temperature on adsorption capacity were investigated. The research showed that the adsorption process is spontaneous, favorable, and endothermic, and the maximum adsorption capacity of the raspberry leaf powder was higher compared to other plant leaf-based adsorbents.
Article
Biochemistry & Molecular Biology
Mahmood M. S. Abdullah, Hamad A. Al-Lohedan, Ayman M. Atta
Summary: Two novel amphiphilic polyethylene amine terephthalates were prepared by glycolysis of polyethylene terephthalate, showing good efficiency in demulsification of heavy crude oil emulsions. DOAT demonstrated faster, higher efficiency, and cleaner separation compared to DOAP.
Article
Biochemistry & Molecular Biology
Omnia M. Elshayb, Khaled Y. Farroh, Heba E. Amin, Ayman M. Atta
Summary: The study demonstrates that using zinc oxide nanoparticles as fertilizer can effectively enhance rice grain yield and nutrient uptake, although it may have adverse effects on the absorption of phosphorus element. Furthermore, combining a very small amount (40 ppm) of ZnO NPs with basal ZnSO4 treatment significantly improves agronomic and physiological features, ultimately leading to higher yield and nutrient-enriched rice grain.
Article
Chemistry, Multidisciplinary
Ayman M. Atta, Mohamed H. El-Newehy, Meera Moydeen Abdulhameed, Mohamed H. Wahby, Ahmed Hashem
Summary: The enhancement of epoxy materials with nanomaterials for coating steel shows improved adhesion properties, superhyrophobicity, and durability in aggressive seawater environment.
Article
Materials Science, Multidisciplinary
Mohamed H. Wahby, Ayman M. Atta, Yasser M. Moustafa, Abdelrahman O. Ezzat, Ahmed I. Hashem
Summary: By embedding hydrophobic organic modified inorganic nanoparticles into epoxy coatings, the adhesion strength, superhydrophobicity, and anticorrosion performance of the coatings on steel surfaces can be improved.
Article
Chemistry, Physical
Ali M. Abou-Elanwar, Yogita M. Shirke, Cheol Hun Yoo, Soon Jin Kwon, Won-Kil Choi, Jong Suk Lee, Seong Uk Hong, Hyung Keun Lee, Jae-Deok Jeon (Jae-Deok)
Summary: By incorporating iron oxide nanoparticles into a polyamide matrix to form thin film nanocomposite membranes, significant improvements in water vapor permeance and selectivity were achieved.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Ayman M. Atta, Hamad A. Al-Lohedan, Abdelrahman O. Ezzat
Summary: The new geminal dicationic ionic liquids (ILs) showed promising demulsification performance for stable sea water-in-heavy petroleum crude oil emulsions, with lower melting and glass transition temperatures. Their surface activity, micellization behavior, and adsorption at various interfaces were investigated, showing effective interactions with asphaltenes.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Analytical
Ayman M. Atta
Summary: Smart textiles with multifunctional surface properties, including photoluminescence, antimicrobial, and superhydrophobic properties, were desired. Silver nanoparticles were immobilized onto a cotton surface to introduce antimicrobial properties. The morphology of the silver immobilized cotton fibers and Ag NPs were explored, along with the photoluminescence and superhydrophobic properties of the treated cotton samples.
Article
Electrochemistry
Ayman M. Atta, Eid M. S. Azzam, Khalaf M. Alenezi, Hani El Moll, A. Haque
Summary: This study utilized imidazolium and pyridinium cations as curing modifiers to enhance the performance of epoxy coatings, producing new ILs for curing epoxy resin. The resulting epoxy coatings cured with ILs hardeners showed significantly improved adhesion strengths and resistance to salt spray exposure.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Energy & Fuels
Abdelrahman O. Ezzat, Ayman M. Atta, Hamad A. Al-Lohedan
Summary: Novel multifunctional tricationic pyridinium ionic liquids were synthesized and investigated for their potential application as demulsifiers for heavy crude oil emulsions, showing promising prospects in the petroleum industry.
Article
Chemistry, Medicinal
Chepyala Karuna, Ch. Venkata Ramana Reddy, Riyaz Syed, Ayman M. Atta
Summary: A set of novel thiazolepyridine derived heterocyclic hybrids were successfully synthesized using a sustainable and economical method. These derivatives showed moderate antibacterial activity and their physiochemical properties and bioactivity scores were within the accepted range.
LETTERS IN DRUG DESIGN & DISCOVERY
(2022)
Article
Biochemistry & Molecular Biology
Mahmood M. S. Abdullah, Abdelrahman O. Ezzat, Hamad A. Al-Lohedan, Ali Aldalbahi, Ayman M. Atta
Summary: This study focuses on the synthesis of two new amphiphilic ionic liquids (AILs) using abietic acid (AA) as a precursor and their application as efficient demulsifiers for water-in-crude oil (W/O) emulsions. The AILs showed promising results in demulsifying W/O emulsions in different crude oil: brine ratios.
Article
Materials Science, Multidisciplinary
Wasmia Mohammed Dahan, Faruq Mohammad, Abdelrahman O. Ezzat, Ayman M. Atta, Hissah Hamad Al-Tilasi, Hamad A. Al-Lohedan
Summary: This study conducted a comparative analysis of insulin drug release from pure chitosan and its crosslinked amide derivatives, investigating the influence of fatty acid derivatives on the release profiles. The cross-linked CS amides were found to be superior to pure CS, with the LLA-derived CS biopolymer showing better performance for insulin drug release through diffusion and dissolution pathways.
Article
Chemistry, Multidisciplinary
Eid M. S. Azzam, Walaa Elsofany, Ghanimah K. Alrashdi, Khalaf M. Alenezi, Abdulmohsen K. D. Alsukaibi, Salman Latif, Fahad Abdulaziz, Ayman M. Atta
Summary: The study aimed to fabricate a nanocomposite material combining the features of surfactants, nanoparticles, and silica gel for the efficient removal of Cu(II) from aqueous solution. The fabricated nanocomposite showed high adsorption efficiency, leading to effective removal of Cu(II) ions.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ayman M. Atta, Eid. M. S. Azzam, Khalaf M. Alenezi, Hani El Moll, Lassaad Mechi, Walaa I. El-Sofany
Summary: The large sizes of cations and anions in organic salts drive the application of ionic liquids (organic salts) in harsh salty conditions. Crosslinked ionic liquid networks are formed as anti-rust and anticorrosion protective films on substrate surfaces to prevent corrosion by repelling seawater salt and water vapor.
Article
Polymer Science
Wasmia Mohammed Dahan, Faruq Mohammad, AbdelRahman O. Ezzat, Ayman M. Atta, Hissah Hamad Al-Tilasi, Hamad A. Al-Lohedan
Summary: This study investigates insulin-release profiles from chitosan-amide-modified stimuli-responsive polymers formed from different fatty acids, and explores the drug release mechanisms using various pharmacokinetic models.
