Article
Chemistry, Analytical
Feyzullah Tokay, Refiye Gunaydin, Sema Bagdat
Summary: A novel vortex-assisted solid phase extraction method combined with inductively coupled plasma optical emission spectrometry was developed for direct determination of Mn, Cu, Ni, Cr, Cd, and Pb in oily matrices. The method involved sorption onto γ-Al2O3 functionalized with fluorescein, followed by transfer to an aqueous eluent for quantification. The method showed good accuracy and precision, with detection limits ranging from 0.7 to 1.6 μg L-1 and recovery values between 98.4% and 103.3% with 2.6-6.4% relative standard deviation.
Article
Environmental Sciences
Sadin Ozdemir, Zeynep Turkan, Ersin Kilinc, Ramazan Bayat, Mustafa Soylak, Fatih Sen
Summary: A novel preconcentration technique was developed for the simultaneous preconcentrations of Cu(II) and Mn(II), using Bacillus cereus loaded magnetic gamma-Fe2O3 nanoparticles as support materials on solid-phase extraction procedure. The optimized conditions were pH 6.0, flow rate of 3 mL min(-1), eluent of 5 mL 1 mol L-1 HCl, biomass of 200 mg, and magnetic gamma-Fe2O3 nanoparticles as support material. The developed method showed high preconcentration factors, low LOD values, and low RSD values, with extraction recoveries higher than 98%.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Applied
Hilal Ahmad, Lihua Zhao, Changkun Liu, Chaojie Cai, Fuqing Ma
Summary: A new method utilizing ultrasound-assisted dispersive solid phase microextraction was proposed for the analysis of trace inorganic arsenic, achieving low detection limits and high accuracy through the adsorption of arsenic species by hydrothermally synthesized cadmium sulfide nanoparticles within a short time frame.
Article
Chemistry, Physical
Mansoor Khan, Ozgur Ozalp, Muslim Khan, Mustafa Soylak
Summary: Fe3O4-Ti3AlC2 Max phase impregnated with 2-(5-Bromo-2-pyridylazo-5-(diethylamino) phenol) was prepared and used for the extraction of cadmium, lead and cobalt from water and food samples. The impregnated material was characterized and optimized factors impacting the recovery of analytes. The proposed strategy showed good performance in certified reference materials and real samples.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Barbara Feist
Summary: A method of dispersive micro-solid phase extraction (D mu-SPE) using graphene oxide and complexing reagents neocuproine or batocuproine is presented for the preconcentration of trace metal ions (Pb, Cd, Cr, Mn, Fe, Co, Ni, Cu, Zn). The metal ions form cationic complexes and are adsorbed on the graphene oxide surface. Various factors such as pH, eluent, neocuproine and batocuproine amount, mixing time, and sample volume were optimized. The method was validated and applied for metal level determination in food samples.
Article
Chemistry, Analytical
Caixia Yan, Xiaofang Yang, Zhengui Li, Yong Liu, Shengchun Yang, Qingwen Deng, Xiaodong Wen
Summary: In this study, switchable hydrophilicity solvent-based extraction (SHSE) was combined with inductively coupled plasma-optical emission spectrometry (ICP-OES) for the determination of trace lead (Pb) in environmental water and soil samples. By adding non-ionic surfactant Triton X-114 (TX-114), the sensitivity was significantly improved and satisfactory results were obtained, demonstrating a promising, simple and sensitive approach for the determination of trace Pb in environmental samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Hilal Ahmad, Bon Heun Koo, Rais Ahmad Khan
Summary: A new nano-sorbent Fe3O4@beta-lg was developed for selectively binding As(III) ions over As(V) ions at a wider pH range, which was effectively used for evaluating As(III) species in ecological water samples. The proposed method has a low detection limit and high recovery rate.
MICROCHEMICAL JOURNAL
(2022)
Article
Biotechnology & Applied Microbiology
Ohana Nadine de Almeida, Rebeca Moraes Menezes, Leane Santos Nunes, Valfredo Azevedo Lemos, Francisco Heriberto Martinez Luzardo, Fermin Garcia Velasco
Summary: This study focuses on the Eichornia crassipes plant leaves, transforming them into a solid phase for the determination of lead (II) using flame atomic absorption spectrometry online method. The developed method is a simple, fast, economical, safe, and eco-friendly alternative for lead (II) determination.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Analytical
Marina Araujo J. Lopes da Costa, Mariana F. Costa, Rayane Sorrentino, Nakedia M. F. Carvalho, Jefferson S. de Gois
Summary: This study introduces a novel method for preconcentrating As, Cu, and Pb from seawater samples using manganese oxide octahedral molecular sieve (OMS-2). The method was optimized using ICP-OES analysis and achieved high enrichment factors and low detection limits for the target elements. The method was successfully applied to determine As, Cu, and Pb in seawater samples.
Article
Environmental Sciences
Ersin Kilinc, Sadin Ozdemir, Annarita Poli, Barbara Niolaus, Ida Romano, Muhammed Bekmezci, Fatih Sen
Summary: An ecofriendly preconcentration method using Geobacillus galactosidasius sp. nov immobilized on Amberlite XAD-4 as an adsorbent was developed for Hg and Sn preconcentration. The method showed successful quantification of Hg and Sn concentrations in various real meal patterns.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Applied
Francisco L. F. da Silva, Francisco E. H. Lima, Davino M. Andrade Neto, Fernando L. de Menezes, Lillian M. U. D. Fechine, Abdullah Akhdhar, Livia P. D. Ribeiro, Ana R. A. Nogueira, Pierre B. A. Fechine, Gisele S. Lopes, Wladiana O. Matos
Summary: An alternative analytical method using ICP OES was developed for quantifying inorganic arsenic (iAs) in rice. Iron nanoparticles modified with an organophosphorus compound were used to extract iAs from the plant matrix. The proposed method demonstrated satisfactory precision, LOD, and LOQ, with tAs contents between 0.090 and 0.295 mg kg-1 and iAs mass fractions between 0.055 and 0.109 mg kg-1 in rice samples.
Article
Chemistry, Analytical
Hadi M. Marwani, Jahir Ahmed, Mohammed M. Rahman
Summary: In this study, functional multiwall carbon nanotubes (f-MWCNTs) were fabricated by a simple acid treatment and used for the selective detection of toxic lead ions. The f-MWCNTs exhibited excellent selectivity and were successfully employed to detect lead ions in environmental water samples.
Article
Chemistry, Analytical
Ezequiel Vidal, Anabela S. Lorenzetti, Monica B. Alvarez, Claudia Domini, Miguel Angel Aguirre, Lorena Vidal, Antonio Canals
Summary: A green and fast sample preparation method based on RP-DLLME was developed for the separation and preconcentration of multiple elements in gasoline samples, enabling reliable and efficient determination of the elements.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Olena Artiushenko, Volodymyr Zaitsev
Summary: A simple and efficient solid phase extraction technique using functionalized silica nanocomposites was developed and optimized for the extraction of phenolic compounds from wine. The method involved pre-concentration and cleaning of the compounds using an adsorbent with covalently immobilized fragments of phosphonic acid covered with Fe3+ ions. The technique was successfully applied for the quantification of five phenolic compounds in red and white wine samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Environmental Sciences
Celal Caner, Mustafa Sahin Dundar, Huseyin Altundag
Summary: The synthesis of Fe3O4 nanoparticles coated with tetraethyl orthosilicate, (3-chloropropyl)triethoxysilane, and 3-amino-1,2,4-triazole-5-thiol respectively, for antimony speciation was successfully achieved in this research. The nanoparticles were characterized and the speciation study was conducted under optimized conditions. The method showed high sensitivity and low detection limit, making it suitable for antimony separation, enrichment, and determination.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2022)
Article
Chemistry, Analytical
Hadi M. Marwani, Shahid Ahmad
Summary: A simple and economically practical method was used to fabricate an efficient catalyst, with sodium alginate used to prepare hydrogel beads and loaded with metal nanoparticles. The Ag-coated NPs showed high catalytic performance among different nitrophenols, CR, and MO.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Muhammad Tariq Saeed Chani, Khasan S. Karimov, Hadi M. Marwani, Hafiz Muhammad Zeeshan, Mohammed M. Rahman, Abdullah M. Asiri
Summary: This study fabricates resistive and impedimetric sensors using rubber-carbon nanotubes-orange dye nanocomposites, which can be used for multiple sensing purposes. The sensors are made using rubbing-in technology on rubber substrates, with observed changes in resistance and impedance under various external conditions.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mohammad Musarraf Hussain, Abdullah M. Asiri, Jamal Uddin, Hadi M. Marwani, Mohammed M. Rahman
Summary: Here, nanocomposites of thallium oxide doped multi-walled carbon nanotube (Tl2O MWCNT NCs) were synthesized using a wet-chemical method. The fabricated Tl2O MWCNT NCs were fully characterized using various optical techniques, and the NCs were then utilized to modify a glassy carbon electrode for the selective and sensitive detection of L-cysteine. The performance of the sensor was evaluated using analytical sensing indexes, and the results showed that the sensor exhibited high sensitivity, low detection limits, and good durability. The proposed sensor was successfully applied for the detection of L-cysteine in real biological samples and yielded satisfactory results.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Abdullah M. Asiri, Dan Ren, Hong Zhang, Sher Bahadar Khan, Khalid A. Alamry, Hadi M. Marwani, Mohammad Sherjeel Javed Khan, Waheed A. Adeosun, Shaik M. Zakeeruddin, Michael Graetzel
Summary: Splitting water using renewable energy is a promising strategy for hydrogen production. This study investigated the use of earth-abundant catalysts and low-cost perovskite solar cells for efficient water splitting. The developed catalysts showed high activities for hydrogen evolution and oxygen evolution reactions, enabling a remarkable solar-to-hydrogen conversion efficiency of 12.67% in an alkaline electrolyzer.
Article
Chemistry, Multidisciplinary
Mohammed M. Rahman, M. M. Alam, Abdullah M. Asiri, Sulaiman Y. M. Alfaifi, Hadi M. Marwani
Summary: A high-performance acute toxic methanol sensor based on ZnO/CdO/SnO2 hexagonal nanodiscs was fabricated. The sensor exhibited linear response in a wide range of methanol concentration and showed excellent sensitivity, stability, and reproducibility. The assembled sensor was validated with real environmental samples and demonstrated good performance. This unique method could be a potential technique in the field of portable sensor development for environmental and healthcare applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Abdullah M. Asiri, Jing Gao, Sher Bahadar Khan, Khalid A. Alamry, Hadi M. Marwani, Mohammad Sherjeel Javed Khan, Waheed A. Adeosun, Shaik M. Zakeeruddin, Dan Ren, Michael Gratzel
Summary: This study reveals the catalytic performance of polycrystalline copper, Cu2O-derived copper, and CuO-derived copper in the electroreduction of CO2. The results show that all three catalysts exhibit high electroreduction efficiency and production rate in a flow electrolyzer. The selectivity and activity of ethylene-dominated C2+ products are similar on the three catalysts at the same current density.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Multidisciplinary Sciences
Abdullah M. Asiri, Waheed A. Adeosun, Sher Bahadar Khan, Khalid A. Alamry, Hadi M. Marwani, Shaik M. Zakeeruddin, Michael Graetzel
Summary: Clean energy is highly needed due to increasing energy requirements. Water splitting for hydrogen energy is made possible by using CdFe2O4 as a potential catalyst, which exhibits high current and potential stability.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Abdullah M. Asiri, Valerio Pugliese, Francesco Petrosino, Sher Bahadar Khan, Khalid Ahmad Alamry, Soliman Y. Alfifi, Hadi M. Marwani, Maha M. Alotaibi, Debolina Mukherjee, Sudip Chakraborty
Summary: This study aimed to investigate the degradation performance of natural cellulose acetate membranes filled with ZnO nanostructures. Photocatalytic degradation of methylene blue (MB) using UV light was studied. The results showed that the cellulose acetate membranes filled with ZnO nanoparticles exhibited higher photocatalytic activity under UV light, leading to better degradation of methylene blue and significant potential for practical applications.
Article
Polymer Science
Abdullah M. Asiri, Francesco Petrosino, Valerio Pugliese, Sher Bahadar Khan, Khalid Ahmad Alamry, Soliman Y. Alfifi, Hadi M. Marwani, Maha M. Alotaibi, Catia Algieri, Sudip Chakraborty
Summary: The casting and preparation of ultrafiltration ZnO modified cellulose acetate membrane (CA/ZnO) were investigated in this work. The results showed that ZnO modified CA membranes have higher surface pore size, pore density and porosity, and improved surface hydrophilicity compared with pure CA membranes, but lower flux.
Article
Biochemistry & Molecular Biology
Anish Khan, Lau Kia Kian, Mohammad Jawaid, Aftab Aslam Parwaz Khan, Hadi M. Marwani, Maha Moteb Alotaibi, Abdullah M. Asiri
Summary: This study aimed to synthesize SBR composites with the properties of graphene oxide filler and biodegradable lignin fillers. The addition of graphene oxide improved the morphology of pure SBR, while lignin fillers enhanced the molecular interaction between graphene oxide and SBR. Composite with 1 wt% lignin showed promising characteristics for green tire applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Materials Science, Multidisciplinary
Anish Khan, Madhu Puttegowda, Praveenkumara Jagadeesh, Hadi M. Marwani, Abdullah M. Asiri, A. Manikandan, Aftab Aslam Parwaz Khan, Ghulam Md Ashraf, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: The review article summarizes previous research on polymer composites filled with nitride compounds and discusses their potential applications in electronics and thermal management. The addition of nitride compounds can enhance the mechanical, thermal, and electrical properties of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Chemistry, Multidisciplinary
Abhinandan Kumar, Vatika Soni, Pardeep Singh, Aftab Aslam Parwaz Khan, Mohammed Nazim, Satyabrata Mohapatra, Vipin Saini, Pankaj Raizada, Chaudhery Mustansar Hussain, Mohamed Shaban, Hadi M. Marwani, Abdullah M. Asiri
Summary: This article systematically discusses the potential and challenges of photocatalysis in combating the spread of the COVID-19 virus. From the origin of the virus to the mechanisms of photocatalytic materials, sustainable solutions for the current pandemic and future developments are proposed and discussed.
Article
Polymer Science
Anish Khan, Lau Kia Kian, Mohammad Jawaid, Aftab Aslam Parwaz Khan, Maha Moteb Alotaibi, Abdullah M. Asiri, Hadi M. Marwani
Summary: In this study, an SBR composite reinforced with graphene oxide and collagen filler was successfully synthesized. The composite exhibited good biodegradability and mechanical properties, making it suitable for the production of green tires in the automotive industry.
Article
Polymer Science
Hadi M. Marwani, Shahid Ahmad, Mohammed M. Rahman
Summary: A biopolymer nanocomposite hydrogel based on gelatin and tin-doped gadolinium oxide (Sn-Gd2O3@GH) was prepared for the efficient reduction of water pollutants. The hydrogel showed efficient catalytic reduction of water pollutants and could be easily recovered and reused.
Article
Engineering, Chemical
Mohd Zeeshan, Rais Ahmad, Asif Ali Khan, Aftab Aslam Parwaz Khan, Hadi M. Marwani, Mohamed Shaban, Abdullah M. Asiri, Sakshi Singh
Summary: This work presents the synthesis of a novel organic-inorganic nanocomposite ion exchanger with exceptional ion exchange capacities. Cu2+ selective membrane electrodes were fabricated and tested, and several parameters were measured.
DESALINATION AND WATER TREATMENT
(2022)