Article
Water Resources
Santosh Singh, Himanshu Gupta, Soniya Dhiman, Nawal Kishore Sahu
Summary: This study successfully demonstrated the removal of brilliant green dye from aqueous medium using activated carbon prepared from waste banana peels. The adsorption of dye was found to be exothermic, spontaneous, and favorable, indicating potential for treatment of wastewater contaminated with brilliant green and other toxic pollutants.
APPLIED WATER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shareefraza J. Ukkund, Prasad Puthiyillam, Hashim M. Alshehri, Marjan Goodarzi, Syed Noeman Taqui, Ali E. Anqi, Mohammad Reza Safaei, Masood Ashraf Ali, Usman Taqui Syed, Rayees Afzal Mir, Ashraf Elfasakhany, Emad M. Eed, Md Irfanul Haque Siddiqui, Imran Mokashi, Manzoore Elahi M. Soudagar
Summary: The study reported the first-ever use of halloysite nanotube (HNT) as a low-cost nanomaterial for removing brilliant green dye from aqueous media. The Redlich-Peterson isotherm model showed the best fit, with kinetic studies confirming a second-order pseudo model. Analysis using infrared spectroscopy and electron microscopy was used to interpret the adsorbent features, and process optimization was carried out through a dual section Fractional Factorial Experimental Design. An analysis of variance (ANOVA) was used to consider the combined impact of boundaries.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Tariq A. Altalhi, Mohamed M. Ibrahim, Gaber A. M. Mersal, M. H. H. Mahmoud, Tushar Kumeria, Mohamed G. El-Desouky, Ashraf A. El-Bindary, Mohamed A. El-Bindary
Summary: In this study, mango seeds activated carbon (MSAC) nanoparticles were prepared with high biocompatibility for potential use as drug carriers. The experimental results showed that the nanocomposite significantly enhanced the adsorption performance of the anti-cancer drug DOX, indicating its potential in drug delivery applications.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Samriti Thakur, Satnam Singh, Bonamali Pal
Summary: The study compared the extraction and characteristics of CaO from eggshells to commercially available CaO, showing better adsorption efficiency for Brilliant Green dye. The extracted CaO demonstrated higher adsorption for cationic dyes and good reusability in pellet form.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2022)
Article
Environmental Sciences
Muhammad Rashid, Rabia Rehman, Maha E. Al-Hazemi, Muhammad Muzammil Jahangir, Zahrah T. Al-thagafi, Reem I. Alsantali, Mehwish Akram
Summary: Textile industries contribute to water pollution by using large amounts of water and dyes. This study investigated the use of chemically treated Symplocos racemosa agro-waste as a biosorbent for removing Brilliant Green Dye. The results showed that the agro-waste had a high adsorption capacity for the dye and can potentially be used for water treatment.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Biochemistry & Molecular Biology
Aylar Naderahmadian, Bagher Eftekhari-Sis, Hessam Jafari, Maryam Zirak, Mohsen Padervand, Ghodrat Mahmoudi, Maryam Samadi
Summary: Cellulose nanofibers decorated with SiO2 nanoparticles (SiO2-CNF) were prepared and demonstrated efficient removal of both anionic and cationic dyes from aqueous solutions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Vasudha Vaid, Rajeev Jindal
Summary: This study developed an eco-friendly, cost-effective, and efficient adsorbent using a cross-linked 3-D network hydrogel based on kappa-carrageenan (KCG) and tamarind kernel powder (TKP). The hydrogel exhibited a high adsorption capacity for the removal of brilliant green (BG) and rose bengal (RB) dyes from wastewater. The adsorption capacity was influenced by parameters such as dye concentration, pH, temperature, and adsorbent amount. The kinetic, isotherm, and thermodynamic studies showed that the hydrogel followed pseudo-second-order kinetics and the Langmuir isotherm model.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Nouf F. Al-Harby, Ebtehal F. Albahly, Nadia A. Mohamed
Summary: The novel CCs adsorbent, prepared via a four-step procedure, shows high adsorption capacity for CR dye and fits multiple kinetic and isotherm models. The adsorption process is endothermic, spontaneous, and involves multiple steps. Desorption efficiency remains high after several cycles.
Article
Biochemistry & Molecular Biology
Elzbieta Grzadka, Ewelina Godek, Grzegorz Slowik, Agnieszka Kowalczuk, Jakub Matusiak, Urszula Maciolek
Summary: This study investigated the influence of star-shaped and linear polyacrylic acid on the structure, adsorption amount, electrokinetic properties, and stabilizing properties of PAA/CTAB/nanoclay suspensions. The results showed that PAA could effectively stabilize N-SM. The addition of CTAB increased the stability of the systems but decreased the adsorption of PAA on the N-SM surface and changed the structure of the adsorption layers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Salma Gul, Azra Gul, Hajera Gul, Rozina Khattak, Muhammad Ismail, Sana Ullah Khan, Muhammad Sufaid Khan, Hani Amir Aouissi, Andrejs Krauklis
Summary: In this study, Banyan tree leaves were used as a low-cost biosorbent to remove brilliant green dye from water. The optimal conditions achieved a removal rate of 97.3% and an adsorption capacity of 19.5 mg/g. The Banyan tree leaves showed excellent adsorption capacity for removing toxic dyes from aqueous solutions.
Article
Chemistry, Inorganic & Nuclear
Gholamreza Ebrahimzadeh-Rajaei
Summary: This study investigated the adsorption of reactive red-P2B dye on montmorillonite clay as a cost-effective inorganic adsorbent. The montmorillonite clay was characterized using various analytical techniques. Factors such as pH, adsorbent dosage, initial concentration, and contact time were evaluated. The adsorption capacity of the dye decreased with increasing pH and temperature, and the Freundlich model provided the best fit for the adsorption data.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Civil
Sarika Vithalkar, R. M. Jugade, D. Saravanan
Summary: The present research explores the use of used-tea-powder (UTP) as a potential adsorbent for the removal of Brilliant Green (BG) dye from aqueous solution. The study analyzes the pore morphology, surface properties, crystalline nature, and thermal stability of UTP, and determines the optimized working conditions for efficient dye removal.
AQUA-WATER INFRASTRUCTURE ECOSYSTEMS AND SOCIETY
(2022)
Article
Chemistry, Applied
Mohamed Abdel Salam, Abdulmohsen A. Alshehri, Wilhelm Schwieger, Mohamed Mokhtar
Summary: The purification and remediation of the environment by removing heavy metals such as bismuth is crucial. In this study, Na-ilerite nanoclay was prepared and treated to produce SiO2 pillared ilerite, leading to a significant increase in the specific surface area. The pillared ilerite nanoclay showed great potential as an efficient adsorbent for removing Bi(III) from model solutions and environmental samples.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Chemical
Linda B. L. Lim, Chin Mei Chan, Amal Asheeba Romzi, Namal Priyantha
Summary: The study investigated the potential of Diplazium esculentum as a low-cost and effective biosorbent for removing toxic Brilliant green dye. Batch experiments showed that the Pakis adsorbent reached equilibrium with the dye within 2 hours, and the Sips model was found to have the best fit for the adsorption isotherm. The experimental data indicated that nonlinear regression analysis provided a better fit for both kinetics and isotherm than linear regression analysis, and Pakis maintained its effective adsorption capacity in varying pH and salt concentrations.
DESALINATION AND WATER TREATMENT
(2021)
Article
Biotechnology & Applied Microbiology
Shreya Patel, Reema Desai, Bhakti Patel, Daoud Ali, Vinars Dawane, Kamlesh Gadhvi, Virendra Kumar Yadav, Nisha Choudhary, Dipak Kumar Sahoo, Ashish Patel
Summary: This study reports the synthesis of iron oxide nanoparticles from the stem of a rare Acacia species using a phyto-assisted method. The nanoparticles were characterized using various analytical techniques. The synthesized nanoparticles were also successfully used for the removal of dyes from aqueous solutions.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Muhammad Ishfaq, Tehmina Kousar, Mehtab Hussain, Hamoud Somaily, Sidra Mubeen, Erich Potrich, Nadia Masaya Panduro-Tenazoa, Mohamed Abdel Salam, Syeda Rabia Ejaz, Muhammad Aadil
Summary: Material scientists are employing photocatalytic materials to detoxify waste and combat water pollution. Narrow-bandgap materials, like binary metal-doped cerium oxide, are valuable for their visible light-harvesting properties. The CZC-2 photocatalyst showed superior dye degradation activity and maintained high catalytic efficiency even after multiple reuse cycles, highlighting its potential for practical environmental cleanup.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Muhammad Aadil, Tehmina Kousar, Mehtab Hussain, H. H. Somaily, Aliaa Kareem Abdulla, Eman Ramzy Muhammad, Eman A. Al-Abbad, Mohamed Abdel Salam, Soha M. Albukhari, Doaa F. Baamer, Mohd Zahid Ansari
Summary: In this research, a mesoporous rod-shaped ZnO/CuO/CeO2 n-p-n heterojunction with a preferred interface between ZnO, CuO, and CeO2 phases was designed for photocatalytic applications. The heterojunction extended the light-absorption window up to 800 nm. Under sunlight, the photocatalytic efficiency of the mesoporous ZnO/CuO/CeO2 heterojunction was tested with methyl orange (MO) and crystal violet (CV) as target molecules, resulting in degradation efficiencies of 88% and 96% respectively, after 90 min of sunlight irradiation. The outstanding photocatalytic properties were attributed to the photo-response, band-structure, and photo-induced carriers of the mesoporous photocatalyst.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Muhammad Sabir, Najla AlMasoud, Muhammad Ramzan, Muhammad Aamir, Syeda Rabia Ejaz, Taghrid S. Alomar, Zeinhom M. El-Bahy, Mohamed Abdel Salam, Soha M. Albukhari, Doaa F. Baamer
Summary: In this study, rare earth (Gd) and transition metal (Co) co-doped LaFeO3 perovskite and its carbon nanotube (CNT) reinforced nanohybrid were prepared via a wet-chemical and post-ultrasonication method. The doped and reinforced materials were characterized using various physical and electronic techniques, and their effects on morphology, surface area, conductivity, and band structure were investigated. The resulting LGFCO@C catalyst exhibited excellent catalytic capabilities for the mineralization of anionic dye phenol red (PR), attributed to its hybrid composition, optimal band gap, large surface area, and high electronic conductivity. The incorporation of CNTs significantly improved light harvesting and catalytic activity. The stability and reusability of the LGFCO@C catalyst were also evaluated, showing only a minor decrease in activity after multiple reuse cycles. The study suggests that integrating multiple features into a single catalyst holds promise for advancing photocatalysis.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Applied
Saedah R. Al-Mhyawi, Muhammed Abdel-Hamied Abdel-Tawab, Rasha M. El Nashar
Summary: An electrochemical sensor for fast and sensitive analysis of kasugamycin residues (KASU) in vegetables was developed. The sensor utilizes a conducting polyserine film (poly (SER)) and carbon nanomaterials including functionalized multiwalled carbon nanotubes (fMWCNTs) and reduced graphene oxide (rGO). The sensor exhibited excellent sensitivity, selectivity, and applicability for the selective analysis of KASU in foodstuffs.
Article
Electrochemistry
Saedah R. Al-Mhyawi
Summary: Silver nanoparticles were synthesized using plant extract and the relationship between their size and form with the concentration of silver nitrate salt was examined. The results showed a linear relationship between the salt concentration and the size of silver nanoparticles. The inhibitory efficacy of the nanomaterials on the corrosion of carbon steel in hydrochloric acid was studied, and it was found that the inhibition efficiency increased with higher doses of the nanomaterials.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Chemistry, Physical
Mohamed Mokhtar M. Mostafa, Ahmed Shawky, Sharif Fakhruz Zaman, Katabathini Narasimharao, Mohamed Abdel Salam, Abdulmohsen A. Alshehri, Nezar H. Khdary, Sulaiman Al-Faifi, Abhishek Dutta Chowdhury
Summary: Photocatalytic conversion of carbon dioxide (CO2) into methanol (CH3OH) using PdO/GdFeO3 nanocomposites as photocatalysts was investigated. The inclusion of PdO into GdFeO3 enhanced the visible-light absorption and reduced the overall bandgap. The optimized PdO dosage of 1.5% resulted in significantly improved CH3OH production and sustainable recyclability.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Saeed Saad Alelyani, Yasar N. Kavil, Radwan Kh Al-Farawati, Mousa Zobidi, Mohamed Abdel Salam, Yasser A. Shaban
Summary: The addition of multi-walled carbon nanotubes (MWCNT) to TiO2 altered its properties, enhancing the photoactivity for reducing Cr (VI) in water. The photocatalyst was synthesized and characterized, showing improved efficiency compared to bare TiO2. The optimized conditions achieved the highest removal efficiency of Cr (VI) to Cr (III) within 90 minutes of natural sunlight illumination.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Multidisciplinary Sciences
Dmitry Galyamin, Jorge Torrero, Isabel Rodriguez, Manuel J. Kolb, Pilar Ferrer, Laura Pascual, Mohamed Abdel Salam, Diego Gianolio, Veronica Celorrio, Mohamed Mokhtar, Daniel Garcia Sanchez, Aldo Saul Gago, Kaspar Andreas Friedrich, Miguel A. Pena, Jose Antonio Alonso, Federico Calle-Vallejo, Maria Retuerto, Sergio Rojas
Summary: The study finds that low-ruthenium-content pyrochlores (R2MnRuO7, R = Y, Tb, and Dy) exhibit high activity and durability for the oxygen evolution reaction (OER) in acidic media. Among them, Y2MnRuO7 is the most stable catalyst, showing a voltage of 1.5 V at 10 mA cm(-2) for 40 h, or 5000 cycles up to 1.7 V. Experimental and computational results indicate that the excellent performance is attributed to the Ru sites embedded in RuMnOx surface layers. A water electrolyzer with Y2MnRuO7 and only 0.2 mgRu cm(-2) achieves a current density of 1 A cm(-2) at 1.75 V, remaining stable at 200 mA cm(-2) for over 24 h. These findings suggest further investigation on Ru catalysts with the goal of enhancing OER performance through a partial replacement of Ru with inexpensive cations. Ru-pyrochlores can serve as alternative anodes of PEM water electrolyzers, and their high performance is attributed to the Ru sites embedded in RuMnOx surface layers. The durability of a water electrolyzer with Y2MnRuO7 and only 0.2 mgRu cm(-2) has been successfully demonstrated.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Naif S. Aljohani, Yasar N. Kavil, Radwan K. Al-Farawati, Saeed Saad Alelyani, Mohammed Orif, Yasser A. Shaban, Saedah R. Al-Mhyawi, Enas H. Aljuhani, Mohamed Abdel Salam
Summary: The study used modified Halloysite nanoclay to enhance the adsorption efficacy of heavy metals from water, focusing on As (III) adsorption. The experimental conditions were optimized with a dosage of 1 g/L, contact time of 90 min, pH 8, and an initial concentration of 5 ppm As (III). The physical characteristics of the modified Halloysite nanoclay were investigated, and the adsorption efficiency of As (III) reached 82.4% under the optimized conditions. Kinetic study revealed that the removal process of As (III) followed pseudo-second order kinetics.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Nasser H. H. Shalaby, Saedah R. R. Al-Mhyawi, Ahmed H. H. Ragab, H. A. Elmawgoud, Eman A. A. Al-Swat, Noha M. M. Al-Thubaiti
Summary: The current study applies eco-friendly principle in treating waste. A composite photocatalyst was prepared from waste-extracted oxides with swift methods, using metal-lixiviant complexes as metal precursors and nitrogen doping. The efficiency of dye removal reached 89.9% and 83.4% for two different catalysts under visible irradiation. The kinetic study showed the significant role of mass transfer in the reaction rate.
Article
Materials Science, Multidisciplinary
Tongfei Lei, Azam Khan, Jasim Yousaf, Ahmed Deifalla, Feng Pan, Ahmed H. Ragab, Ali Sayqal, Muhammad Khan, Mohd Zahid Ansari, Yaqoob Khan
Summary: The monoclinic CuO naturally grows into sheet-like structures from alka-line solutions. The growth can be achieved by heterogeneously nucleating CuO onto Ni foam substrate from ammonical solutions of Cu salts. The grown CuO nanosheets demonstrate great potential as electrode materials for electrochemical supercapacitors.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Alvaro Tolosana-Moranchel, Alvaro Garcia, Alvaro Garcia-Corral, Jose F. Marco, L. Pascual, Dalia Liuzzi, Mohamed A. Salam, Pilar Ferrer, Jorge Torrero, David C. Grinter, Georg Held, Daniel Garcia Sanchez, K. Andreas Friedrich, Maria Retuerto, Sergio Rojas
Summary: The overall performance of proton exchange membrane fuel cells is limited by the sluggish kinetics of the oxygen-reduction reaction (ORR). Among the most active PGM-free ORR electrocatalysts are metal-nitrogen-carbon (M-N-C), such as Fe-N-C. In this work, a Fe/N/C catalyst was synthesized via thermal treatment of a polymeric CxNy precursor obtained by the wet-polymerization of melamine (a nitrogen rich molecule) and terephthaldehyde, and it displayed high ORR activity in acid electrolyte compared to other Fe-N-C catalysts.
JOURNAL OF POWER SOURCES
(2023)
Article
Polymer Science
Murad. M. Qronfla, Bassem Jamoussi, Radhouane Chakroun, Bandar A. Al-Mur, Riyadh F. Halawani, Fahed A. Aloufi
Summary: A novel molecularly imprinted polymer (MIP) was synthesized to selectively extract and enrich phenylglyoxylic acid (PGA) in urine samples. The efficiency of the molecularly imprinted solid-phase extraction (MISPE) process was optimized by investigating critical variables such as pH and sorbent mass. The MIP showed higher selectivity and affinity for PGA compared to hippuric acid.
Article
Polymer Science
Bassem Jamoussi, Radhouane Chakroun, Bandar A. Al-Mur, Riyadh F. Halawani, Fahed A. Aloufi, Anis Chaabani, Naif S. Aljohani
Summary: This study introduces a novel technique that combines ion-imprinted polymers and solid-phase extraction to selectively adsorb lithium ions from reverse osmosis brine. The efficiency of this technique is optimized through systematic manipulation of pH, temperature, sorbent mass, and elution volume. The ion-imprinted polymer shows excellent adsorption capacity for lithium ions and can achieve high recovery rates.
Article
Chemistry, Multidisciplinary
Naif S. Aljohani, Yasar N. Kavil, Radwan K. Al-Farawati, Nasser H. Aljohani, Mohammed I. Orif, Mohammed A. Ghandourah, Safia Mohammed Bahshwan, Fahed Ayed Aloufi, Riyadh F. Halawani, Mohamed Abdel Salam
Summary: Saudi Arabia is the country that obtains the most desalination water from the Red Sea. Most of the desalination plants in the country use advanced technologies to minimize their impact on the environment. This study provides a comprehensive database of hydrographic parameters from observed desalination facilities in the last four years, shedding light on the environmental impact regarding these factors.