Article
Environmental Sciences
Sarah Briceno, Carlos Reinoso
Summary: This study revealed the molecular interaction between chitosan, graphene, and CoFe2O4 nanoparticles with commercial glyphosate, and quantitatively measured the removal of glyphosate using a low-cost nanocomposite as bioadsorbent.
ENVIRONMENTAL RESEARCH
(2022)
Article
Biophysics
Jiayue Sun, Xuling Liu, Chengqi Lyu, Yinghan Hu, Derong Zou, Yu-Shi He, Jiayu Lu
Summary: The study introduces a graphene coating to modified titanium surfaces to prevent bacterial infections in oral implants, showing promising antibacterial effects in both in vitro and in vivo tests. The graphene coating, when loaded with levofloxacin, exhibits synergistic antibacterial properties through membrane stress and ROS generation, effectively preventing bacterial infections following implantation.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Engineering, Environmental
Linlin Dong, Zhong Zhuang, Guohua Dong, Hao Zhang, Min Zhu, Zhuanfang Zhang, Ming Zhao, Jinlong Li, Wenzhi Zhang
Summary: In this study, a laminated electrocatalyst was constructed to enhance the electrocatalytic degradation of organic wastewater. The Ti/ZnFe2O4/ Ce-PbO2 (TZCP) showed higher electrocatalytic activity compared to Ti/ZnFe2O4 (TZ) and Ti/Ce-PbO2 (TCP), attributed to its higher oxygen evolution potential, lower charges transfer resistance, and larger electrochemical active surface area. Furthermore, TZCP exhibited excellent stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Weilong Shi, Lijing Wang, Juan Wang, Haoran Sun, Yuxing Shi, Feng Guo, Changyu Lu
Summary: In this study, CdS/rGO/ZFO nanocomposite was constructed for efficient Photo-Fenton degradation of tetracycline. The nanocomposite exhibited excellent photoactivity and recyclability, providing potential application prospects.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Nguyen Minh Dat, Doan Ba Thinh, Nguyen Thanh Hoai Nam, Nguyen Duy Hai, Le Minh Huong, Nguyen Thi Hanh, Mai Thanh Phong, Nguyen Huu Hieu
Summary: The silver/graphene oxide (AG) nanocomposite was synthesized with different AgNO3:GO ratios and characterized by modern analytical methods. The AG nanocomposites showed particle sizes of 18.09 +/- 3.78 nm (1:1 wt/wt -AG2) and 22.88 +/- 4.67 nm (1.25:1 wt/wt -AG3). The smallest variations in factors affecting the Hg(II) sensing ability of AG nanocomposite were investigated through the Box-Behnken model. The results demonstrated that AG3 exhibited a limit of detection of 19.06 +/- 0.42 mu g/L with specific conditions of AG dose, solution salinity, and interaction time. Meanwhile, AG2 showed excellent adsorption capacity for crystal violet with high removal efficiency and reusability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Tahani Saad Algarni, Amal M. Al-Mohaimeed, Abdel-Basit Al-Odayni, Naaser A. Y. Abduh
Summary: This study investigated the potential advantage of ZnFe2O4-incorporated activated carbon (ZFAC) in the removal of cationic dye crystal violet (CV) from aqueous solutions. The results showed that ZFAC had a high adsorption capacity at optimal pH, temperature, and CV concentration, and the adsorption process followed the Langmuir isotherm model. Thermodynamic analysis indicated that the adsorption was spontaneous, endothermic, and a random process, supporting a physical adsorption mechanism.
Article
Energy & Fuels
Qana A. Alsulami, Laila M. Alharbi, Sherif M. A. S. Keshk
Summary: This study successfully synthesized a ternary composite electrode material consisting of graphene oxide, spinel zinc ferrite, and polyaniline, which exhibited significantly enhanced capacitance. The intercalation of polyaniline through in situ polymerization played a crucial role in improving the electrochemical properties of the material.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Usha Jinendra, Dinesh Bilehal, B. M. Nagabhushana, Avvaru Praveen Kumar
Summary: In this study, a RGO-Ni nanocomposite was synthesized and used for the removal of Rhodamine B dye from aqueous solutions. The results demonstrated that the RGO-Ni nanocomposite showed better adsorption capacity compared to other adsorbents, with good regeneration and reusability properties.
Article
Chemistry, Physical
Kunrong Zeng, Kadda Hachem, Mariya Kuznetsova, Supat Chupradit, Chia-Hung Su, Hoang Chinh Nguyen, A. S. El-Shafay
Summary: This study investigated the adsorption process and mechanism of heavy metal ion lead using a magnetic ash/graphene oxide nanocomposite through artificial intelligence simulation and molecular dynamics calculations. The adsorption was found to occur through electrostatic interactions and van der Waals bonding, with the lead-water-GO configuration showing the highest adsorption affinity. An artificial neural network model was developed to predict the adsorption capacity, and the initial ion concentration was found to have a significant effect on the equilibrium concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Masoud Ebratkhahan, Mahmoud Zarei, Nasser Arsalani
Summary: In this study, graphene quantum dots were successfully synthesized and applied for efficient removal of tetracycline from water. The nanocomposite of graphite/chitosan/graphene quantum dots showed promising performance in the electro-Fenton process for water treatment applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Masoud Ebratkhahan, Mahmoud Zarei, Nasser Arsalani
Summary: In this research, graphene quantum dots were synthesized and used as a cathode electrode in the electro-Fenton process to remove tetracycline from aqueous solution. The optimal conditions for maximum tetracycline removal efficiency were determined. Various analysis techniques were performed to investigate the properties of the cathode. The reusability of the cathode was also studied.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Cristina Coromelci, Mariana Neamtu, Maria Ignat, Petrisor Samoila, Mirela Fernanda Zaltariov, Mircea Palamaru
Summary: New catalysts were synthesized and showed promising characteristics for wastewater treatment and organic pollutant removal. Optimum experimental parameters were determined, and the conventionally calcined lanthanum doped TiO2/ZnFe1.98La0.02O4 system exhibited the highest efficiency for dye removal.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Daryoush Khedri, Amir Hessam Hassani, Elham Moniri, Homayon Ahmad Panahi, Mehrnoosh Khaleghian
Summary: In this study, a novel thermo-responsive polymer was synthesized and grafted onto the surface of graphene oxide for efficient removal of phenol and 2,4-dichlorophenol from aqueous solutions. The nanoadsorbent demonstrated high adsorption capacity, achieving removal percentages of 91% and 99% for phenol and 2,4-dichlorophenol, respectively, under optimal conditions. The adsorption of phenol and 2,4-dichlorophenol followed pseudo-second-order kinetics and Langmuir isotherm models, and the thermodynamic parameters confirmed spontaneous and exothermic adsorption. The reusability study showed that the adsorbent can be reused in wastewater treatment applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mohammad Hossein Ahmadi Azqhandi, Maryam Foroughi, Zahra Gholami
Summary: In this study, a novel nanocomposite was developed for the efficient removal of antibiotic pollutants from water bodies. The engineered nanocomposite showed excellent adsorption performance and the modeling approaches accurately predicted the removal efficiency. The nanocomposite can be reused multiple times and easily separated due to its magnetic properties.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Soumaya Rezgui, Aida M. Diez, Lotfi Monser, Nafaa Adhoum, Marta Pazos, M. Angeles Sanroman
Summary: A simple protocol was proposed for the preparation of magnetic chitosan beads ZnFe2O4-CS via a co-precipitation method, which were evaluated as catalyst for heterogeneous photo-Fenton treatment of chlordimeform insecticide. Under optimal conditions, the ZnFe2O4-CS beads showed efficient removal of the insecticide and demonstrated stable photocatalytic activity through four consecutive cycles of testing.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)