Article
Chemistry, Physical
Ashley R. Bielinski, Emily A. Sprague-Klein, Brian T. Phelan, Alex B. F. Martinson
Summary: This study developed a pyroelectric calorimeter to quantitatively detect the heat generated by ALD reactions, with the most effective design used to measure the heat produced by a specific reaction. The sensitive and ultrafast probe can potentially enhance our fundamental understanding of numerous ALD reaction mechanisms through quantitative comparison with computational predictions.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Savan K. Raj, Vartika Sharma, Anshul Yadav, Pankaj D. Indurkar, Vaibhav Kulshrestha
Summary: This study reports the fabrication of a novel composite using alumina wrapped carbon microspheres (Al-CMs) with high adsorption capacities for pentavalent arsenic/arsenate (As(V)) and fluoride (F-). The maximum adsorption capacities for As(V) and F- are comparatively higher than other reported nano-adsorbents. The interaction energy between Al-CMs and F- and As(V) was examined using density functional theory (DFT).
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Diksha Choudhary, Deepika Tavar, Pardeep Singh, Pankaj Raizada, Mohammad Ashiq, Avanish Kumar Srivastava, Archana Singh
Summary: This study synthesized nano-gamma Al-Mn-O to remove As(III) and fluoride from groundwater. The results showed that the synthesized material had a good removal capacity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Toshiki Fujii, Yuichi Kitagawa, Yasuchika Hasegawa, Hiroaki Imoto, Kensuke Naka
Summary: This study demonstrates that arsenic motifs can enhance the photosensitized energy-transfer efficiency of lanthanide complexes, with the heavy-atom effect playing a key role.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
M. Y. Mihaylov, V. R. Zdravkova, E. Z. Ivanova, H. A. Aleksandrov, P. St Petkov, G. N. Vayssilov, K. Hadjiivanov
Summary: The structures of nitrates formed on ceria surface were investigated using FTIR spectroscopy and DFT methods, with isotope labelling utilized to strengthen the conclusions. It was found that monodentate nitrates were actually tridentate nitrates with C-2v symmetry, and bidentate nitrates typically bridge and chelate cerium cations. The spectral differences between these species are due to binding geometry and symmetry reduction.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Xueqing Liu, Nengsheng Liu, Xiang Li, Yongming Luo, Xiaoying Li, Bo Hu, Xintao He, Chengwei Liu, Sufang He
Summary: Aluminum-modified SBA-15 mesoporous materials were synthesized and used as efficient adsorbents for As(V) removal. The effects of aluminum loading on the physicochemical properties of Al-x-SBA-15 were investigated, and it was found that an optimal loading of 10% resulted in the highest adsorption capacity. The adsorption kinetics were found to be controlled by both film diffusion and intraparticle diffusion.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Engineering, Environmental
Chaohong Guan, Zhenming Xu, Hong Zhu, Xiaojun Lv, Qingsheng Liu
Summary: Activated alumina is the most common adsorbent for purifying fluoride in water, and in this study, the fluoride adsorption mechanisms on different crystal phase alumina surfaces were investigated using density functional theory. The results showed that theta-Al2O3 exhibited the highest reactivity for fluoride adsorption due to the high unsaturation level of aluminum atoms. Additionally, the bonding between fluoride and alumina surfaces was attributed to the hybridization between fluoride-p orbitals and aluminum-s,p orbitals.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Environmental Sciences
Sikpaam Issaka Alhassan, Lei Huang, Yingjie He, Lvji Yan, Bichao Wu, Haiying Wang
Summary: Fluoride concentration in drinking water has global health implications, with over 200 million people drinking fluorinated water. The use of alumina and aluminum-based composites for fluoride removal through the adsorption method is ideal due to its low cost, availability of adsorbents, pollution-free treated water, and environmental friendliness. The adsorbents can easily form aluminumfluoro complexes (AlFx) for enhanced adsorption at near-neutral pH, making them the most suitable for removing fluoride.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chao Wang, Yedong Rong, Boran Zhang, Jinlong Yang
Summary: In this study, Al2O3-hollow glass sphere foam ceramics were successfully fabricated using a particle-stabilized foaming method, showing high porosity and low thermal conductivity, reaching superinsulating material level. The compressive strength of the foam ceramics is acceptable, and the deviation between theoretical and experimental values is mainly due to the hierarchical microstructure of the foams. This work may deepen understanding of the particle-stabilized foaming technique and pave new ways for fabricating superior thermal-insulating ceramic materials.
Article
Green & Sustainable Science & Technology
Hakan Celebi, Ismail Bilican, Tolga Bahadir
Summary: The experimental results showed that RU, FeU, and FeU@200 degrees C are effective in removing geogenic arsenic from well-waters, with adsorption process matching the Langmuir isotherm model and pseudo-second-order kinetics.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Lauren N. Pincus, Predrag V. Petrovic, Isabel S. Gonzalez, Eli Stavitski, Zachary S. Fishman, Holly E. Rudel, Paul T. Anastas, Julie B. Zimmerman
Summary: The study investigated the selective adsorption capabilities of transition metal chitosan complexes towards arsenite and arsenate over phosphate, with Fe(III)-chitosan showing the strongest affinity for As(V) and As(III) over phosphate.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Rooh Ullah, Mustafa Tuzen
Summary: Double hydrolysis mesoporous alumina (DHA) synthesized via hydrothermal technique was used as a support for ZnO and Ni. The desulfurization activities and interactions of Ni/ZnO/DHA adsorbents were compared with Ni/ZnO supported on commercially prepared alumina (Com). The binding extent of Zn/Ni atoms with Al2O3 support, the presence of free ZnO/Ni species, and the formation of inactive ZnAl2O4 phases influenced the higher breakthrough desulfurization activity and sulfur adsorption capability of the catalysts.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Multidisciplinary
Javad Khodaii, Hamed Adibi, Farshad Barazandeh, Mehdi Rezaei, Ahmed. A. D. Sarhan
Summary: This paper investigates the effects of different factors on Alumina during grinding using various diamond grinding wheels, including surface integrity, flexural strength, grinding energy, and cost. The experimental and analytical results showed good agreement, with a reduction in subsurface damages and improvements in flexural strength observed by controlling the grinding conditions. Optimal grinding conditions led to significant reductions in surface roughness and grinding cost.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiaoxiao Huang, Gang Yang
Summary: Pollution control of As(III), a naturally occurring carcinogen, is gaining global attention. TiO2 shows promise for controlling As(III) pollution, and the formation of As oxyanions enhances As(III) adsorption and immobilization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Chunmeng Li, Haichao Wang, Xiaorui Chen, Tianyu Zhai, Xuefei Ma, Xinping Yang, Shiyi Chen, Xin Li, Limin Zeng, Keding Lu
Summary: In this study, the measurements of two types of organic nitrates (ONs), peroxy nitrates (PNs) and alkyl nitrates (ANs), in Chengdu, China, during summer 2019, were reported. The average concentrations of PNs and ANs were found to be in the middle and upper end of the reported levels in China. The study showed higher concentrations of PNs and ANs during photochemical pollution period. The box model simulation was able to reproduce PNs during the pollution episodes, but showed overestimation in other periods.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Muhammad Irfan, Masooma Irfan, Ani Idris, Abdullah Saad Alsubaie, Khaled H. Mahmoud, Noordin Mohd Yusof, Naeem Akhtar
Summary: Commercial grade sulfonated-Polyethersulfone (S-PES) and functionalized multiwall carbon nanotube (f-MWCNT)/polyvinylpyrrolidone (PVP) nanocomposites (NCs) were used to enhance and optimize the antifouling, protein resistance and protein separation properties of the S-PES ultrafiltration membranes. The binding forces between the different functional groups greatly reduced the leaching of nanocomposites and developed long finger-like projections. The NCs/S-PES membranes showed impressive flux recovery ratio and reversible resistance values, with reduced protein adsorption. The best performing membrane exhibited high removal rates for proteins of different molecular weights.
Article
Chemistry, Applied
Aiza Azam, Gulzar Muhammad, Muhammad Shahbaz Aslam, Muhammad Mudassir Iqbal, Muhammad Arshad Raza, Naeem Akhtar, Muhammad Ajaz Hussain, Noreen Sajjad, Asad Syed, Ali H. Bahkali, Zahid Shafiq
Summary: The multifunctional zinc oxide nanoparticles synthesized using a cost-effective and eco-friendly approach demonstrated excellent antibacterial properties and wound healing potential. The nanoparticles were characterized using various techniques to confirm their antibacterial activity and biocompatibility.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Analytical
Faria Shakeel, Muhammad Asad, Farhan Zafar, Adel A. Abdelwahab, Naeem Akhtar(s), Hafiz Badaruddin Ahmad, Zahid Shafiq, Mohamed A. Shenashen
Summary: In this study, a highly sensitive and selective non-enzymatic bioinspired electrochemical sensor was developed for monitoring adrenaline from COVID-19 quarantined person blood and pharmaceutical samples. The sensor showed excellent performance with high sensitivity and selectivity in a wide linear range.
Article
Materials Science, Multidisciplinary
Tayyaba Masood, Muhammad Asad, Sara Riaz, Naeem Akhtar, Akhtar Hayat, Mohamed A. Shenashen, Mohammed M. Rahman
Summary: The worldwide outbreak of COVID-19 pandemic poses a great threat to human life and has invisible negative impacts on the mental health of quarantined individuals. Therefore, it is crucial to precisely monitor neurotransmitters like dopamine to assess mental health.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Muhammad Azhar Hayat Nawaz, Mahmood Hassan Akhtar, Jia Ren, Naeem Akhtar, Akhtar Hayat, Cong Yu
Summary: An electrochemical immunosensor based on BPNS/PAH nanocomposite modified electrode was developed for the detection of ovarian cancer biomarker HE4. The sensor showed good linear range, detection limit, selectivity, and specificity towards HE4.
Article
Materials Science, Multidisciplinary
Farhan Zafar, Muhammad Waseem, Muhammad Asad, Adel A. Abdelwahab, Muhammad Usman Ur Rehman, Naeem Akhtar, Abdullah Akhdhar, Mohamed A. Shenashen
Summary: Bioinspired nitrogen-rich carbon-coated zeolitic imidazolate framework-8 (NRC@ZIF-8) was prepared and showed improved electrocatalytic activity for oxygen reduction reaction (ORR) with high half wave potential, methanol poisoning tolerance, and remarkable stability.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Elham S. Aazam, Naeem Akhtar, Waleed Ahmed El-Said
Summary: A novel bioinspired material, NDA@BM-ZIF, has been designed and fabricated for fuel cell applications. It exhibits excellent electrocatalytic performance with high half wave potential value and high tolerance against methanol poisoning. This material provides more O2 adsorption sites and facilitates the kinetics of the oxygen reduction reaction.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Muhammad Waseem Fazal, Farhan Zafar, Muhammad Asad, Fatimah Mohammad H. Al Sulami, Hamad Khalid, Adel A. Abdelwahab, Muhammad Usman Ur Rehman, Naeem Akhtar, Waleed Ahmed El-Said, Sajjad Hussain, Mohamed A. Shenashen
Summary: In this study, a noble metal-free electrocatalyst based on Zn and Co loaded porous C decorated cellulose acetate-polyaniline (ZnCo-C/CA-PANI) electrospun nanofibers at the surface of nickel foam (NF) was fabricated. The smooth coating of CA-PANI electrospun nanofibers at the surface of NF helps to expose the maximum fraction of ZnCo-C based electrocatalyst and ensures uniform flow of ions, resulting in high OH- adsorption capability. The designed ZnCo-C/CA-PANI@NF electrode exhibits efficient electrocatalytic activity for oxygen evolution reaction (OER) with a lower onset potential, small Tafel slope, and high stability. These findings suggest the importance of exploring more noble metal-free hybrid materials for efficient electrocatalytic water splitting in sustainable energy conversion.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Environmental Sciences
Mariam Ghafoor, Zaib Ullah Khan, Mian Hasnain Nawaz, Naeem Akhtar, Abdur Rahim, Sara Riaz
Summary: Heavy metals, resulting from human activities, are widely present in water bodies and accumulate in the body over time, posing serious health problems. Therefore, improving the sensing performance of electrochemical sensors for the detection of heavy metal ions (HMIs) is crucial. In this study, a cobalt-derived metal-organic framework (ZIF-67) was synthesized and incorporated onto the surface of graphene oxide (GO) using a simple sonication method. The synthesized material (ZIF-67/GO) was characterized and used to create a sensing platform for the individual and simultaneous detection of heavy metal ion pollutants (Hg2+, Zn2+, Pb2+, and Cr3+), with detection limits below the permissible limit set by the World Health Organization. This is the first report of HMIs detection using a ZIF-67 incorporated GO sensor, which can successfully determine Hg+2, Zn+2, Pb+2, and Cr+3 ions simultaneously with lower detection limits.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Chemistry, Multidisciplinary
Nageen Shoukat, Shanza Anzar, Muhammad Asad, Ahlam I. Al-Sulami, Hamad Khalid, Aqif Anwar Choudhary, Lubna Sherin, Naeem Akhtar
Summary: An electrochemical sensor based on nanofibers was developed for the sensitive and selective monitoring of bisphenol-A (BPA). The sensor showed high sensitivity, low detection limit, wide linear range, and high selectivity, making it suitable for BPA detection in plastic bottled water.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Jamal Mustafa Al-Tuwaijari, Naeem Th. Yousir, Nafea Ali Majeed Alhammad, Salama Mostafa
Summary: This study employed three different deep learning models to classify dermatoscopy images and showed that the improved ResNet152 model outperformed the other models in terms of accuracy and ROC score. The deep residual learning skin cancer recognition system based on this model has the potential to assist dermatologists in diagnosing skin cancer.
ACTA INFORMATICA PRAGENSIA
(2023)
Article
Chemistry, Analytical
Anam Zulfiqar, Farhan Zafar, Bushra Yaqub, HassabAlla M. A. Mahmoud, Mohibullah Shah, Einas M. A. Widaa, Haq Nawaz, Naeem Akhtar, Umar Nishan
Summary: A heteroatom-doped nanocomposite based on cobalt oxide modified sulfur, phosphorus co-doped carbon nitride (Co3O4/SP-CN) with increased active sites has been fabricated. The synthesized nanocomposite shows high electrocatalytic oxidation efficacy towards human albumin (HA) despite its agglomeration. This improved efficacy can be attributed to the increased adsorption sites and surface defects, fast charge transportation capability, and conductivity of Co3O4/SP-CN.
Article
Biochemistry & Molecular Biology
Nadia Akram, Iram Shahzadi, Khalid Mahmood Zia, Muhammad Saeed, Akbar Ali, Rashad Al-Salahi, Hatem A. Abuelizz, Francis Verpoort
Summary: The innovative aspect of this research is the tuning of the thermo-mechanical behavior of polyurethane composites with improved biocompatibility for vibrant applications. The study found that the addition of chitosan to the composite material improved its hemolytic activity and inhibited biofilm formation.
Article
Chemistry, Multidisciplinary
Reda M. El-Shishtawy, Mahmoud A. Hussein, Salih S. Al-Juaid, Muhammad Waseem Fazal, Waleed A. El-Said, Naeem Akhtar
Summary: The fabrication of N-coordinated cobalt single-atom catalysts (NC-Co-SACs) on a carbon matrix derived from a bimetallic Zn/Co zeolitic imidazole framework is reported. The NC-Co-SACs are integrated into highly conductive cellulose acetate-polyaniline (CP) electrospun nanofibers and exhibit excellent oxygen evolution reaction (OER) efficacy in water splitting. These novel NC-Co-SAC@CP electrospun nanofibers demonstrate superior performance compared to commercial catalysts, highlighting their potential for sustainable energy conversion.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Usman Ur Rehman, Gaber A. M. Mersal, Muhammad Farhan Farid, Azza A. Al-Ghamdi, Ahlam I. Al-Sulami, Muhammad Waseem Fazal, Mohamed M. Ibrahim, Saadat Majeed, Naeem Akhtar
Summary: Salbutamol is a drug used to maintain bronchodilation, but some athletes misuse it as a performance-enhancing drug. To ensure fair competition, a novel non-enzymatic electrochemical sensor was designed for the detection of salbutamol in urine. The sensor showed excellent selectivity, sensitivity, and stability.
NEW JOURNAL OF CHEMISTRY
(2023)
