Article
Engineering, Chemical
Hao Liu, Shifa Wang, Huajing Gao, Hua Yang, Fei Wang, Xiping Chen, Leiming Fang, Shengnan Tang, Zao Yi, Dengfeng Li
Summary: The study used a polyacrylamide gel method to prepare MgAl2O4 nanoparticles with different particle sizes for the removal of dyes from wastewater. A neural network prediction model was established to predict the effect of synthesis parameters on the phase purity of MgAl2O4. The adsorption experiments showed different adsorption performances of MgAl2O4 nanoparticles for Congo red, acid orange 7 and acid fuchsin under various experimental conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
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
Engineering, Environmental
Ruhma Rashid, Iqrash Shafiq, Muhammad Javid Iqbal, Maira Shabir, Parveen Akhter, Muhammad Haris Hamayun, Ashfaq Ahmed, Murid Hussain
Summary: The nitrogen and sulfur co-doped TiO2 (NS/TiO2) nanostructures were synthesized and effectively used for dye removal, achieving high removal efficiencies of 99.4% for MB, 98% for MO, and 96% for MR. The adsorbent showed high affinity towards various dyes and could be regenerated in acidic and basic mediums, maintaining good activity even after three repeated cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Qian Wu, Feng Jiang, Guo Feng, Sanhai Wang, Lifeng Miao, Weihui Jiang, Jian Liang, Jianmin Liu
Summary: MgAl2O4/C composite was synthesized using a low-temperature non-hydrolytic sol-gel method with Mg powder, Al wire, and isopropanol as raw materials. The influence of different magnesium sources and heat treatment temperature on the synthesis and adsorption properties of the composite was investigated. The results showed that amorphous MgAl2O4 had better adsorption capacity for Congo red compared to its crystalline counterpart, which could be attributed to the bimetallic alkoxides structure and the Lewis acid-base reaction between the anionic dye and the composite surface.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Environmental Sciences
Johnson Kwame Efavi, Nathaniel Yeboah, Richard Yeboah Abrokwah, Emmanuel Nyankson
Summary: This study explores the potential of developing a magnetic field-responsive adsorbent based on halloysite nanotubes (HNT) to facilitate the separation of HNT from aqueous media. Fe3O4 was successfully synthesized and combined with HNT to form Fe3O4-HNT composites. The adsorption capacity and kinetics of methylene blue dye by Fe3O4-HNT were investigated. The thermodynamic analysis revealed the dependence of adsorption parameters on temperature and the amount of HNT in the composite.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Dibya Ranjan Rout, Hara Mohan Jena
Summary: This study focuses on the batch adsorption of phenol from an aqueous solution using reduced graphene oxide (RGO) as an adsorbent. The optimized adsorption conditions were determined and various models were used to analyze the adsorption behavior. The results showed that RGO had the ability to regenerate and effectively remove phenol.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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
Environmental Sciences
Dhiraj Mehta, Virendra Kumar Saharan, Suja George
Summary: Waste marble powder is used to synthesize hydroxyapatite for defluoridation of drinking water. The synthesized marble hydroxyapatite is formed into pellets and tested in continuous column defluoridation studies. The optimized column parameters are determined, and modeling studies show that MA-Hap is a promising adsorbent for drinking water treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Imane Lebkiri, Brahim Abbou, Rachid Hsissou, Zaki Safi, Makfire Sadiku, Avni Berisha, Abdelhay El Amri, Youness Essaadaoui, Lamya Kadiri, Ahmed Lebkiri, El Housseine Rifi
Summary: This study investigates the use of anionic polyacrylamide hydrogels for the removal of cationic dye crystal violet from aqueous solutions. Batch adsorption studies show that the maximum adsorption capacity of the dye is 378 mg/g at an initial concentration of 300 mg/L, pH = 5, T = 298 K, and 0.039 g of the adsorbent. The adsorption mechanism follows the pseudo-second-order model, and the equilibrium adsorption follows the Langmuir model. Thermodynamic analysis suggests that the adsorption process is spontaneous and endothermic. Density functional theory (DFT), molecular dynamic (MD), and Monte-Carlo simulation studies were used to support the experimental findings.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Green & Sustainable Science & Technology
Song Cheng, Saidan Zhao, Baolin Xing, Yongzhi Liu, Chuanxiang Zhang, Hongying Xia
Summary: Biochar-based magnetic photocatalyst (ZnFe-BC) was successfully prepared using a one-pot method and microwave heating. It showed excellent adsorption and photocatalytic degradation properties for removing rhodamine B (RB) and malachite green (MG) from wastewater.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
O. A. Abdel Moamen, E. H. EL-Masry, A. M. El-Kamash
Summary: The effect of polyacrylamide-bentonite (PAAmB) composite on the retention of strontium (Sr2+) and cobalt (Co2+) ions was investigated. The addition of bentonite to polyacrylamide polymer enhanced the adsorption capacities of the ions. The adsorption mechanism was found to be chemisorption, and the adsorbed amount of ions increased with temperature.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Environmental
Ali Akbari, Elham Akbari, Amirreza Azadmehr, Ardeshir Hezarkhani
Summary: The study successfully prevented the production of acidic effluent by preparing Pyrite@Silica on the surface of natural pyrite, showing significant adsorption capacity. Under optimal conditions, the adsorption capacities for the dyes were 349 mg g(-1) and 97 mg g(-1), respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Nisreen S. Ali, Noor M. Jabbar, Saja M. Alardhi, Hasan Sh. Majdi, Talib M. Albayati
Summary: The potential of raw date seeds as an adsorbent for removing dyes from aqueous solutions was studied. The pseudo second-order model was found to be the best-fitting model for the adsorption process, and the Langmuir model was the better adsorption isotherm model. The study demonstrated that date seeds could effectively remove dyes from aqueous solutions.
Article
Multidisciplinary Sciences
Wasan A. Muslim, Talib M. Albayati, Salam K. Al-Nasri
Summary: Batch adsorption using Iraqi bentonite as a natural adsorbent showed a high removal efficiency of about 95.66% for Cs-137 decontamination from radioactive wastewater. The Freundlich adsorption isotherm and pseudo-second-order models were found to be suitable for Cs-137 adsorption. Thermodynamic analysis revealed that the adsorption process was endothermic, spontaneous, and favorable.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Ayat Allah Al-Massaedh, Fawwaz I. Khalili
Summary: In this study, macroporous polyacrylamide-based monoliths with negatively charged interaction sites were synthesized for the removal of Th4+ from aqueous solutions. The effects of various factors on the adsorption process were studied, and the adsorption data were best described by Freundlich and Langmuir models. Kinetic studies showed that the adsorption process followed pseudo-second order kinetics, and thermodynamic studies revealed it to be an endothermic and spontaneous process.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Hao Liang, Ruiqi He, Lei Liu, Wei Zhang, Leiming Fang
Summary: Understanding the acoustic velocity-elasticity behavior of beta-Mo2C is important in materials science and earth science. In this study, pure-phase beta-Mo2C ceramics were synthesized using a high-pressure high-temperature method, and their properties were investigated using ultrasonic interferometry and theoretical calculations. The results showed that beta-Mo2C exhibited increasing compressive and shear wave velocities, moduli, hardness, toughness, and temperatures with increasing pressure. The ceramic also maintained high hardness at elevated temperatures.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Shifa Wang, Maoyuan Li, Huajing Gao, Zijuan Yin, Chaoli Chen, Hua Yang, Leiming Fang, Jagadeesha Angadi, Zao Yi, Dengfeng Li
Summary: A simple two-step method was developed to fabricate ternary heterojunctions of YMnO3/CeO2/MgAl2O4 composite photocatalysts, which exhibited good adsorption capacity and photocatalytic activity. The GA model showed the best predictive ability for the adsorption capacity. The YCM photocatalysts displayed high optical absorption coefficient, charge carrier transfer and separation efficiency, adsorbed oxygen concentration and interface defect, high adsorption capacity, and photocatalytic activity. This study demonstrated the huge potential of YCM composite photocatalysts for eco-friendly adsorption of dye and degradation of drugs.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jiao Zhang, Xiaofeng Sun, Jinyuan Ma, Zao Yi, Tao Xian, Shifa Wang, Guorong Liu, Xiangxian Wang, Hua Yang
Summary: Rational design of heterostructures is an effective strategy for enhancing the photocatalytic activity of semiconductors. In this study, a dual Z-scheme CdS/ZWO/ZnS heterojunction photocatalyst was synthesized by assembling zero-dimensional CdS and ZnS quantum dots onto one-dimensional ZnWO4 nanorods. The photocatalytic experiments demonstrated that the dual Z-scheme heterojunction photocatalyst exhibited significantly higher photodegradation activity compared to individual CdS, ZnS, and binary CdS/ZWO and ZnS/ZWO heterojunctions. The characteristics and photocatalytic mechanism of the CdS/ZWO/ZnS photocatalysts were investigated using various measurement techniques and computational calculations.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Zhenhong Zheng, Xueshuang Yao, Sinan Zhang, Leiming Fang, Zhuo Jiang
Summary: High-pressure Raman and infra-red spectroscopies were used to investigate the molecular structure changes of alpha-D-glucose under high pressure and temperature. The spectra showed a significant pressure dependence at room temperature, with an abrupt change in the 5.7-5.9 GPa pressure range. The spectra of alpha-D-glucose crystals did not change significantly with temperature increase from 25°C to 110°C. However, the synergistic effect of temperature and pressure could reduce the pressure to 4.4 GPa, suggesting that high temperature may accelerate the structural change of the molecules.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Ceramics
Maoyuan Li, Shifa Wang, Huajing Gao, Zijuan Yin, Chaoli Chen, Hua Yang, Leiming Fang, Jagadeesha Angadi Veerabhadrappa, Zao Yi, Dengfeng Li
Summary: A simple polyacrylamide gel method combined with low temperature sintering technology has been used to synthesize the C-O functional groups grafted MgAl2O4/C3N4/YMnO3 (MAO-CN-YMO) heterojunction photocatalysts with enhanced visible-light-induced photodegradation toward oxytetracycline hydrochloride (OTC-HCl).
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Hao Liang, Ruiqi He, Weitong Lin, Lei Liu, Xiaojun Xiang, Zhengang Zhang, Shixue Guan, Fang Peng, Leiming Fang
Summary: The study demonstrates that high-strain-induced plastic deformation in ceramic materials leads to the formation of a lamellar sub-grain structure with high-density dislocations and the evolution of dislocations into low-angle grain boundaries. The high density of states at the Fermi level and the strong hybridization between Mo-4d and C-2p orbitals contribute to the superconductivity and hardness of the material. The strain-induced defect structure (dislocations and low-angle grain boundaries) enhances the intrinsic structure of the material.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Ruiqi He, Leiming Fang, Xiping Chen, Lei Xie, Guoliang Niu, Gongzhang Yang, Tiexin Han, Jiacheng Sun
Summary: In this study, pure polycrystalline Cr3C2 was synthesized using high pressure and high temperature method, and its sound velocities, elasticity, and mechanical properties were investigated. The results showed that Cr3C2 is more ductile than most covalent carbides, and its Vickers hardness is higher than that reported in previous studies. The intrinsic properties of Cr3C2 were obtained, relying on the advantages of sintering the pure polycrystalline ceramics.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Xuefeng Zhou, Wenwen Xu, Zhigang Gui, Chao Gu, Jian Chen, Jianyu Xie, Xiaodong Yao, Junfeng Dai, Jinlong Zhu, Liusuo Wu, Er-jia Guo, Xiaohui Yu, Leiming Fang, Yusheng Zhao, Li Huang, Shanmin Wang
Summary: Based on high-quality samples synthesized by a high-pressure method, the crystal structure and properties of LaWN3 have been studied comprehensively. It is found that LaWN3 adopts an orthorhombic Pna2(1) structure with a polar symmetry along the c-axis. The atomic polar distortions in LaWN3 are driven by covalent hybridization of W: 5d and N: 2p orbitals, which leads to its semiconducting behaviors. This study provides important insights into the structures and properties of nitride perovskites.
Article
Materials Science, Ceramics
Shifa Wang, Hao Liu, Maoyuan Li, Mengjun Han, Huajing Gao, Hua Yang, Leiming Fang, Huijun Zhang, Angadi. V. Jagadeesha, S. O. Manjunatha, Chao Cai, Dengfeng Li
Summary: Various carbon-based MgAl2O4 (MAO) adsorbents were synthesized using ultrasound irradiation technology and different carbon sources. The optimal synthesis conditions were determined by studying the addition of different carbon types and mass ratios. The adsorption behavior of the carbon-based MAO adsorbents for different dyes and drugs was discussed, and various adsorption isotherm models were studied. The study demonstrated the potential of carbon-based MAO adsorbents as eco-friendly adsorbents for the removal of dyes and drugs.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Shifa Wang, Shengnan Tang, Huajing Gao, Chuan Yu, Hua Yang, Xianlun Yu, Xiping Chen, Leiming Fang, Dengfeng Li
Summary: The one step polyacrylamide gel method was employed to synthesize ZnO/MgO adsorbents with successful confirmation of their composition and absence of impurity elements. The morphology of the adsorbent changed with increased MgO content. The adsorption process was found to be influenced by pH, adsorbent dosage, contact time, and reaction temperature, with optimal values determined. The ZnO/MgO adsorbents demonstrated a higher maximum adsorption capacity for Congo red dye compared to previous reports, and the adsorption mechanism was determined to involve hydrogen bonding, n-pi interaction, and electrostatic interaction.
JOURNAL OF NANO RESEARCH
(2023)
Article
Chemistry, Physical
Yan Han, Shifa Wang, Maoyuan Li, Huajing Gao, Mengjun Han, Hua Yang, Leiming Fang, V. Jagadeesha Angadi, A. F. Abd El-Rehim, Atif Mossad Ali, Dengfeng Li
Summary: A polyacrylamide gel method was used to fabricate Ba1-xSrxTiO3 (BST, x = 0.1-0.5) photocatalysts. The phase structure of BST photocatalysts changed from tetragonal to cubic, affecting their color parameters, energy band values, and photocatalytic activity. The optimal conditions for the degradation of tetracycline hydrochloride by BST photocatalysts were determined. The technique used in this study can be applied to the development of similar photocatalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhijie Ma, Ying Sun, Huiqing Lu, Kewen Shi, Sihao Deng, Xiuliang Yuan, Weichang Hao, Yi Du, Yuanhua Xia, Leiming Fang, Jinbo Yang, Wenyun Yang, Claire V. Colin, Huaiming Guo, Xiaobai Ma, Dongfeng Chen, Cong Wang
Summary: In this study, a noncoplanar antiferromagnetic phase was experimentally obtained in the antiperovskite system Mn3Sn0.5Zn0.5Cx through neutron powder diffraction analysis. This phase exhibits zero thermal expansion behavior in a wide temperature range from 10 to 162 K. The zero thermal expansion in this noncoplanar antiferromagnetic ordered system is attributed to the competition between nearest antiferromagnetic direct exchange and ferromagnetic superexchange interaction.
Article
Materials Science, Ceramics
Yan Han, Shifa Wang, Xinmiao Yu, Maoyuan Li, Zao Yi, Jinlong Tang, Huajing Gao, Hua Yang, Leiming Fang, Asad Syed, Dengfeng Li
Summary: In this study, BST5/BFO magnetic photocatalysts were constructed using a polyacrylamide gel route combined with low temperature heat treatment process. The effect of different BFO contents on the properties of BST5/BFO magnetic photocatalysts was investigated. The results showed that the BST5/5%BFO catalyst exhibited the highest photocatalytic efficiency under simulated sunlight irradiation.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yaoshi Cheng, Ruiqi He, Yuanhua Xia, Tiexin Han, Leiming Fang, Shiliang Huang, Benqiong Liu
Summary: The compressional and shear wave velocities of polycrystalline CeAl2 were measured up to 12.5 GPa, revealing a discontinuity at around 7.5 GPa, supporting the volume collapse of this material. The high-pressure behavior of the bulk and shear moduli were investigated using experimental data and first-principles calculations, showing significant pressure dependence and mechanical instability above 15 GPa.
