Article
Chemistry, Analytical
Shalene Xue Lin Goh, Esther Xue Yi Goh, Hian Kee Lee
Summary: A novel membrane-based SPE-UHPLC-MS/MS method was developed for the determination of nine glucocorticoids in water, with the use of SDS-MWCNTs material and membrane device, enhancing the overall extraction efficiency.
Article
Environmental Sciences
Mingkai Liu, Yuxi Jia, Zilong Cui, Zhichao Lu, Weikun Zhang, Kezhong Liu, Li Shuai, Lei Shi, Runhui Ke, Yinghua Lou
Summary: This study found the presence of polyhalogenated carbazoles (PHCZs) in farmland soils, with 36-CCZ and 3-CCZ being the dominant congeners, and other congeners with average percentages lower than 10%. The diverse sources of PHCZs in the soil were identified, and even congeners with low concentrations may pose potential risks to the environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Thamer Adnan Abdullah, Tatjana Juzsakova, Sanaa A. Hafad, Rashed Taleb Rasheed, Noor Al-Jammal, Muhammad Ali Mallah, Ali Dawood Salman, P. C. Le, Endre Domokos, Mustafa Aldulaimi
Summary: The growing global economy has led to an increase in transportation and oil exploitation, resulting in oil spillage as a serious threat to aquatic and terrestrial ecosystems. Water purification has become a major challenge worldwide. Traditional adsorbents for oil removal have drawbacks, leading research efforts to focus on finding adsorbents with improved oil adsorption capabilities, such as nano-adsorbents like multi-walled carbon nanotubes.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Review
Environmental Sciences
Aiming Wu, Xiaoli Zhao, Junyu Wang, Zhi Tang, Tianhui Zhao, Lin Niu, Wendiang Yu, Chunyan Yang, Mengyuan Fang, Hongzhou Lv, Shasha Liu, Fengchang Wu
Summary: This review discusses the application of solid-phase extraction based on functionalized magnetic nanoparticle adsorbents for the detection of trace persistent organic pollutants in environmental water from 2015 to 2019, as well as the synthetic routes, characteristics of modification materials, selective sorption mechanisms, and analytical performance of these adsorbents. The properties of environmental water samples have complex effects on the extraction efficiency of POPs, and improvements in magnetic solid-phase extraction for POP analysis should focus on novel applicable functionalized MNP adsorbents, suitable detection techniques, combination of other extraction techniques, and automation of MSPE.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Lazaro Adrian Gonzalez-Fernandez, Nahum Andres Medellin-Castillo, Raul Ocampo-Perez, Hector Hernandez-Mendoza, Maria Selene Berber-Mendoza, Cristobal Aldama-Aguilera
Summary: Simple Walled Carbon Nanotubes (SWCNTs) were used as adsorbents to remove triclosan (TCS) from aqueous solution. The maximum adsorption capacity of TCS onto SWCNTs was found to be 30.3 mg g(-1) at a pH value of 7. The adsorption kinetics of TCS on SWCNTs was correctly interpreted by the First Order Kinetic Model and the Diffusional Model.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Nisar Ali, M. D. Mahamudul Hassan Riead, Muhammad Bilal, Yong Yang, Adnan Khan, Farman Ali, Shafiul Karim, Cao Zhou, Ye Wenjie, Farooq Sher, Hafiz M. N. Iqbal
Summary: Effective separation and remediation of environmentally hazardous pollutants are vital research areas, with magnetic solid-phase extraction (MSPE) technology gaining attention for its strong magnetic domain and ease of separation. Magnetic hybrid nanoscale materials as MSPE sorbents show potential in efficiently treating a variety of environmentally toxic pollutants.
Article
Green & Sustainable Science & Technology
Panagiota Martinaiou, Panagiota Manoli, Vasiliki Boti, Dimitra Hela, Elissavet Makou, Triantafyllos Albanis, Ioannis Konstantinou
Summary: The presence of organic pollutants in aquatic environments and their potential risks to ecosystems and public health have underscored the need for sensitive, reliable, economical, and environmentally friendly analytical methods. This study developed and validated a solid-phase extraction method for analyzing pesticides and pharmaceuticals in seawater. The method was used to assess environmental pollution levels in seawater samples collected from a fish farm in Greece, revealing traces of a pharmaceutical compound but no pesticides.
Article
Polymer Science
Ivonne Quintanilla, Carlos Perello, Francesca Merlo, Antonella Profumo, Claudia Fontas, Enriqueta Antico
Summary: Monitoring organic pollutants in environmental water bodies is vital for controlling contamination levels. This study focuses on the development of functionalised polymeric films for measuring toxic compounds. The films, made from modified cellulose triacetate and multi-walled carbon nanotubes, enable the detection of low levels of selected compounds in water samples. The method is found to be satisfactory in terms of repeatability and detection limits, and it is successfully applied to river water without significant matrix effects for certain compounds.
Article
Chemistry, Multidisciplinary
Jiazhuo Chen, Takashi Kikuchi, Kazuhiro Takagi, Hiromasa Kiyota, Kiyohiro Adachi, Takaaki Mitsuhashi, Makoto Fujita
Summary: This article introduces a method for analyzing the degradation products of organic pollutants, which can obtain the crystal structure of organic pollutants. The study found that halogen interactions play an important role in molecular recognition in the crystalline sponge.
Article
Chemistry, Analytical
Sergio Santana-Viera, Sarah Montesdeoca-Esponda, Rayco Guedes-Alonso, Zoraida Sosa-Ferrera, Jose Juan Santana-Rodriguez
Summary: The widespread use of plastics in products has led to the global generation of microplastic debris, causing negative impacts on marine organisms and the environment. Understanding the types and concentrations of contaminants adsorbed on microplastics, and developing effective extraction procedures, is crucial for evaluating the issue. Research has shown that a variety of organic pollutants have been widely found on microplastic samples, highlighting the importance of future studies focusing on emerging pollutants.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Biochemical Research Methods
Yang Feng, Min Sun, Mingxia Sun, Jiaqing Feng, Haili Sun, Juanjuan Feng
Summary: Polyamidoamine dendrimers were synthesized on silica in situ, with G4 and G5 showing good extraction performance mainly attributed to hydrophobic effects and other interactions.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Environmental Sciences
Lu Peng, Lili Liu, Peng Li, Kunde Lin
Summary: Polyhalogenated carbazoles (PHCZs) have been detected in high concentrations in sediment samples from the Yangtze River estuary and the adjacent East China Sea. The dominant PHCZ, 36-CCZ, is primarily of anthropogenic origin, while 36-BCZ has a natural origin. These findings provide valuable information on the sources of PHCZs and carbazole in this area.
ENVIRONMENTAL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Lin Niu, Xiaoli Zhao, Zhi Tang, Hongzhou Lv, Fengchang Wu, Xiaolei Wang, Tianhui Zhao, Junyu Wang, Aiming Wu, John. P. Giesy
Summary: This study synthesized TiO2 NTs using TiO2 NPs as raw materials and analyzed their differences in adsorption and photocatalytic performance. TiO2 NTs showed better adsorption performance and photocatalytic activity, but a slight decrease in photocatalytic efficiency due to changes in crystal structure. Under optimal conditions, TiO2 NTs can rapidly degrade MB through synergistic adsorption and photocatalysis.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemical Research Methods
C. E. Rodriguez-Palma, R. Herraez-Hernandez, P. Campins-Falco
Summary: A micro-solid phase extraction device with C18 sorbent was developed for the enrichment and purification of organic water pollutants using a portable liquid chromatograph. By immobilizing the sorbent at the inlet of a modified syringe filter, the target compounds could be desorbed and transferred directly to the chromatographic column with a small volume of organic solvent. The proposed micro-SPE approach was proven to be reliable and effective for on-site analysis of pollutants in environmental water samples.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Review
Chemistry, Physical
Mohammad K. Al Hassan, Amna Alfarsi, Mustafa S. Nasser, Ibnelwaleed A. Hussein, Imran Khan
Summary: Wastewater treatment is essential for protecting the environment and human health. Conventional methods may not effectively eliminate organic contaminants, hence the need for innovative solutions like Natural Deep Eutectic Solvents (NADES) and Ionic liquids (ILs).
JOURNAL OF MOLECULAR LIQUIDS
(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, Multidisciplinary
Muhammad Rashid, Warda Hassan, Muhammad Aadil, H. H. Somaily, Noor Mahmood Mahdi, Rahiam Lataef, Anmar Ghanim Taki, Khaysy Srithilat, Doaa F. Baamer, Soha M. Albukhari, Mohamed Abdel Salam, Asif Llyas
Summary: Semi-conductive photocatalysts are highly efficient and cost-effective for water treatment applications. Material scientists are working on developing nanostructured Mn-doped cobalt ferrite as a magnetically recyclable photocatalytic material that is active in visible light and has high conductivity. The study investigates the crystal structure, chemical composition, functionality, and morphology of the prepared ferrite samples, as well as their thermal stability, electrical conductivity, light-harvesting capability, charge transport performance, and charge separation efficiency.
Article
Chemistry, Physical
Asma D. D. Alomari, Dalal Alezi, Mohamed Abdel Salam
Summary: A terbium-based metal-organic framework (Tb-FTZB-MOF) with high surface area was successfully synthesized and characterized. It was found to effectively remove direct violet 31 dye from both model and real solutions, with optimal conditions being ambient temperature, pH value of 8.0, and a dosage of 35 mg Tb-FTZB-MOF.
Article
Chemistry, Analytical
Maymounah N. Alharthi, Iqbal Ismail, Stefano Bellucci, Mariusz Jaremko, Salah E. M. Abo-Aba, Mohamed Abdel Salam
Summary: The green biosynthesis of zinc oxide nanoparticles (GBS ZnO NPs) using Ziziphus jujuba leaves extract assisted by ultrasonic irradiation was reported. The biosynthesized ZnO NPs were characterized as hexagonal wurtzite crystal with an average size of 90 +/- 10 nm. They showed effective antibacterial activities against S. aureus and E. coli bacteria and outstanding cytotoxic effects on human colon cancer cell lines (HCT-116) and human liver cancer cell lines (HepG2). The cytotoxicity mechanism was enhanced by generating ROS and inducing apoptosis in the cells.
Review
Multidisciplinary Sciences
Monis Bin Abid, Roswanira Abdul Wahab, Mohamed Abdel Salam, Iqbal Ahmed Moujdin, Lassaad Gzara
Summary: Water is crucial for human survival, particularly in arid regions or places with limited fresh water. Desalination is an effective method for meeting the increasing water demand. Membrane distillation technology, which operates at low temperature and pressure, is used for water treatment and desalination. However, the challenges of water efficacy and biofouling arise due to the lack of suitable and versatile membranes. Researchers have explored different membrane composites to develop efficient and biofouling-resistant membranes for membrane distillation.
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, 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
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
Engineering, Multidisciplinary
Ferda Civan Cavusoglu, Sahika Sena Bayazit, Mohamed Abdel Salam
Summary: Water pollution caused by untreated waste, especially paint waste from various industries, has become a major concern. Crystal violet is a toxic dye used in industries, and its removal from wastewater before discharge is essential for environmental safety. This research evaluated the effectiveness of two montmorillonite-based nanoclays as low-cost materials for crystal violet dye removal. Parameters affecting the adsorption process were optimized, and the adsorption kinetics and equilibrium parameters were studied. The results showed that the montmorillonite-based adsorbents were effective and cost-effective for crystal violet dye removal.
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohamed Mokhtar M. Mostafa, Yining Li, Wael Halawani, Katabathini Narasimharao, Mohamed Abdel Salam, Abdulmohsen A. A. Alshehri, Nezar H. H. Khdary, Sulaiman Al-Faifi, Lin Gu, Abhishek Dutta Chowdhury
Summary: The increased awareness of carbon management has driven the scientific community to develop sustainable catalytic technologies for CO2 conversion. Copper-based multifunctional catalysts are commonly used for thermal hydrogenation and electrocatalytic reduction of CO2. This study synthesized Cu-Zn oxides combined with Al2O3 and ZrO2 through coprecipitation and annealing at different temperatures, revealing that the composition and pretreatment temperature of Cu-Zn oxides significantly affect electrocatalytic CO2 reduction performance. The findings provide insights for designing an efficient catalytic system for CO2 conversion.
DALTON TRANSACTIONS
(2023)
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.
