Article
Chemistry, Physical
Yun Wang, Xinchen Chen, Xuewen Hu, Peng Wu, Tu Lan, Yang Li, Hong Tu, Yan Liu, Dingzhong Yuan, Zhenyu Wu, Zhirong Liu, J. W. Chew
Summary: The ultralight three-dimensional porous network phosphonic acid functionalized polymer/graphene oxide nanoribbons aerogel (PAFP/GONRs-A) showed excellent adsorption capacity for thorium, with a maximum capacity of 457.9 mg g(-1) at a pH of 3.0 and a maximum thorium selectivity of 87.1% at a pH of 2.0 under optimal experimental conditions. Additionally, the adsorption process of Th(IV) on PAFP/GONRs-A was found to be pH-dependent, spontaneous, and endothermic.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Shih-Yang Lin, Ngoc Thanh Thuy Tran, Ming-Fa Lin
Summary: This study thoroughly investigates the significant similarities and differences among Bi-/Al-/Ti-/Fe-/Co-/Ni-adsorbed graphene nanoribbons using first-principles calculations. The main characterizations include adsorption sites, bond lengths, stability, band structures, charge density distributions, spin- and orbital-projected density of states, and magnetic configurations. The research shows a transformation from finite gap semiconducting to metallic behaviors, along with nonmagnetism, antiferromagnetism, or ferromagnetism, due to various factors such as chemical bonds, quantum confinement, edge structure, and spin-dependent many-body effects.
Article
Biotechnology & Applied Microbiology
Amina Bibi, Shazia Bibi, Mohammed Abu-Dieyeh, Mohammad A. Al-Ghouti
Summary: In this study, the removal of phenol from synthetic and real wastewater using a new polyacrylic acid-modified graphene oxide (GO-PAA) composite material was investigated. Results showed that the adsorption capacity of GO-PAA was double compared to un-modified GO, and under the optimum conditions (pH 2 and 25°C), GO-PAA was able to remove approximately 75% of phenol from synthetic wastewater. These findings suggest that adsorption using GO-PAA could be an effective and simple method for remediating pollution, especially in acidic conditions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Inorganic & Nuclear
Nildeniz Adman, Sabriye Yusan
Summary: In this study, graphene oxide and aginate were used to synthesize nanobiocomposites for the adsorption of Th (IV) ions from aqueous solutions. The materials were characterized using various techniques, and the adsorption efficiency was investigated under different conditions. The results showed significant effects of concentration, time, and temperature on the adsorption process.
Article
Chemistry, Physical
Dan Li, Tao Hua, Jiren Yuan, Feigao Xu
Summary: A novel adsorbent called magnetic humic acid/graphene oxide composite (MHAGO) has been prepared for treating methylene blue (MB) from wastewater. The MHAGO showed high adsorption capacity for MB, and the adsorption process was found to be well described by certain kinetic and isotherm models.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Yangyang Gao, Yongbo Qin, Meng Zhang, Lihong Xu, Zhencong Yang, Zhanglian Xu, Yin Wang, Meng Men
Summary: The presence of oxygen-containing functional groups on carbon materials enhances the adsorption capacity of radioactive thorium ions (Th(IV)), with the adsorption capacity dependent not only on the oxygen content but also on the type of oxygen-containing functional groups. Coordination of Th(IV) with oxygen functional groups induces the aggregation and sedimentation of graphene oxide nanoflakes (GONFs), facilitating the separation of adsorbents. This study deepens our understanding of the role of oxygen-containing groups in Th(IV) adsorption and provides a new strategy for the design and synthesis of high-performance carbon-based adsorbents.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
F. Caballero Briones, J. Guerrero-Contreras, S. E. Benito-Santiago, J. L. Sanchez Llamazares, F. J. Espinosa-Faller
Summary: This study observed the formation of nanoscrolls after hydrazine treatment in iron oxide-decorated graphene oxide, leading to the formation of nanoribbons after HCl treatment. The proposed mechanism includes the decoration onto the epoxy/hydroxyl moieties and the reduction of carboxyl and carbonyl groups causing the sheet rolling, with nanoribbons forming upon iron oxide dissolution and breaking of iron-carbon bonds. The superparamagnetic materials exhibited maximum saturation magnetization of 30 and 20 A.m(2).kg(-1), respectively, and the formation of these structures in FeOx-GO appears to be a more general phenomenon not described in other reports.
Article
Construction & Building Technology
Chandra Sekhar Reddy Indukuri, Ruben Nerella
Summary: This study aimed to evaluate the transport properties of a cement composite incorporated with graphene oxide (GO). The experimental results demonstrated that the addition of GO could significantly decrease water absorption, chloride migration coefficient, and chloride penetration depth in the cement composite specimens, while improving mechanical properties such as flexural strength and compressive strength. SEM analysis also showed that GO-cement composite specimens had a pore-filled structure. Overall, the incorporation of graphene oxide nano material effectively improved the transport properties of the cement composite.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Chemistry, Applied
Mojtaba Safaviyan, Mehdi Faramarzi, Seyed Aboutaleb Mousavi Parsa, Hajir Karimi
Summary: In this study, a novel Cr(VI) adsorbent, TEPA-enriched MGO, was developed and characterized. The optimal parameters for Cr(VI) sorption, including Cr(VI)/MGOT ratio, temperature, and pH, were determined through Box-Behnken Design. The maximum adsorption capacity was found to be 287.15 mg/g. The Lagergren kinetic and Langmuir isotherm models accurately represented the adsorption process on MGOT. Based on the obtained results, MGOT was identified as an excellent reusable adsorbent for selective Cr(VI) sorption and magnetic separation from wastewater.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Engineering, Environmental
Izabela Zielinska, Daniel Polak, Maciej Szwast
Summary: A composite material was developed to remove pharmaceutical compounds from water, with graphene oxide selected as the adsorbent for its properties. The material proved effective for adsorption of all analyzed substances in water, showing potential for water purification applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Yun Wang, Xuewen Hu, Yuting Liu, Yang Li, Tu Lan, Changfu Wang, Yan Liu, Dingzhong Yuan, Xiaogang Cao, Houjun He, Limin Zhou, Zhirong Liu, Jia Wei Chew
Summary: The study presented the preparation and characterization of an ultralight 3D porous amidoxime functionalized graphene oxide nanoribbons aerogel (PAO/GONRs-A) for the selective removal of uranium from water samples. The adsorbent exhibited high nitrogen content, low density, and large specific surface area, with excellent adsorption capacity and selectivity for uranium. Adsorption experiments showed a pH-dependent, spontaneous and endothermic process, with optimal fitting to pseudo-second-order kinetic model and Langmuir isotherm model.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
W. D. Wang, Y. X. Cui, L. K. Zhang, Y. M. Li, P. Sun, J. H. Han
Summary: A novel magnetic zinc ferrite/porous biochar composite was prepared and utilized for removing radioactive thorium (Th) (IV) from aqueous solutions, showing superior adsorption performance. The composite exhibited superparamagnetism and high Th(IV) removal efficiency, making it a promising adsorbent for recovering Th(IV) from wastewater.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Md Osim Aquatar, Juili S. Mankar, Urvashi Bhatia, Sadhana S. Rayalu, Reddithota J. Krupadam
Summary: Highly efficient CO2 capture at elevated temperatures has been achieved using few-layered graphene nanosheets prepared from solid waste from high energy explosive materials industry. The materials demonstrated high adsorption capacity, selectivity towards CO2, fast adsorption kinetics, and recycling stability, making them promising for real-life CO2 capture applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Bing Chen, Yanhui Li, Meixiu Li, Mingfei Cui, Wenshuo Xu, Liubo Li, Yaohui Sun, Mingzhen Wang, Yang Zhang, Kewei Chen
Summary: By improving the synthesis process, a MOF-525/GO composite with high surface area and good adsorption properties was obtained; the adsorption rate of TC by MOF-525/GO is rapid and stable, mainly driven by pi-pi stacking and hydrogen bonding, as well as complexation between Zr and TC.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Santiago Jose Guevara-Martinez, Francisco Villanueva-Mejia, Luis Olmos, Pedro Navarro-Santos, Manuel Arroyo-Albiter
Summary: In this study, the effect of oxidized functional groups on the properties of armchair graphene nanoribbons was investigated. It was found that functional groups near the edges have a greater stabilizing effect on oxidized graphene nanoribbons. Additionally, promising nanostructures for adsorption were proposed based on the reactivity of oxidized graphene nanoribbons towards phenol, a critical pollutant.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Chemistry, Analytical
Zhirong Liu, Taoyuan Xiu, Ying Du, Yun Wang
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2020)
Article
Environmental Sciences
Yan Liu, Yunfei Ouyang, Dejuan Huang, Chao Jiang, Xiaopeng Liu, Yun Wang, Ying Dai, Dingzhong Yuan, Jia Wei Chew
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Chemical
Xuewen Hu, Yun Wang, Jinbo Ou Yang, Yang Li, Peng Wu, Hengju Zhang, Dingzhong Yuan, Yan Liu, Zhenyu Wu, Zhirong Liu
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2020)
Article
Biochemistry & Molecular Biology
Xiaohuan Tang, Limin Zhou, Zhanggao Le, Yun Wang, Zhirong Liu, Guolin Huang, Adesoji A. Adesina
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Chemistry, Analytical
Xuewen Hu, Yun Wang, Peng Wu, Yang Li, Hong Tu, Changfu Wang, Dingzhong Yuan, Yan Liu, Xiaogang Cao, Zhirong Liu
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2020)
Article
Engineering, Chemical
Dingzhong Yuan, Shiao Zhang, Jiale Tan, Yahong Dai, Yun Wang, Yan He, Yan Liu, Xiaohong Zhao, Mengmeng Zhang, Qinghua Zhang
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Chemistry, Physical
Yun Wang, Yuting Liu, Xuewen Hu, Yang Li, Hong Tu, Changfu Wang, Yan Liu, Dingzhong Yuan
Summary: The study focused on the uranium(VI) adsorption performances of GONRs with different unzipping levels, revealing a close relationship between enhanced U(VI) capture and their structures and surface oxygen-containing functional groups. At the molecular level, the interaction mechanism demonstrated that UO22+ mainly complexed with carboxyl and hydroxyl groups at the edges of the GONRs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Yun Wang, Xuewen Hu, Yuting Liu, Yang Li, Tu Lan, Changfu Wang, Yan Liu, Dingzhong Yuan, Xiaogang Cao, Houjun He, Limin Zhou, Zhirong Liu, Jia Wei Chew
Summary: The study presented the preparation and characterization of an ultralight 3D porous amidoxime functionalized graphene oxide nanoribbons aerogel (PAO/GONRs-A) for the selective removal of uranium from water samples. The adsorbent exhibited high nitrogen content, low density, and large specific surface area, with excellent adsorption capacity and selectivity for uranium. Adsorption experiments showed a pH-dependent, spontaneous and endothermic process, with optimal fitting to pseudo-second-order kinetic model and Langmuir isotherm model.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Yun Wang, Xinchen Chen, Xuewen Hu, Peng Wu, Tu Lan, Yang Li, Hong Tu, Yan Liu, Dingzhong Yuan, Zhenyu Wu, Zhirong Liu, J. W. Chew
Summary: The ultralight three-dimensional porous network phosphonic acid functionalized polymer/graphene oxide nanoribbons aerogel (PAFP/GONRs-A) showed excellent adsorption capacity for thorium, with a maximum capacity of 457.9 mg g(-1) at a pH of 3.0 and a maximum thorium selectivity of 87.1% at a pH of 2.0 under optimal experimental conditions. Additionally, the adsorption process of Th(IV) on PAFP/GONRs-A was found to be pH-dependent, spontaneous, and endothermic.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Yang Li, Houjun He, Zuocong Liu, Zeen Lai, Yun Wang
Summary: A 3D porous structure graphene oxide nanoribbons (GONRs) aerogel was prepared via hydrothermal method, showing good mechanical strength, easy separation from water, and high adsorption capacity for uranium and thorium. The adsorption processes of GONRs aerogel are strongly pH-dependent and spontaneous. GONRs aerogel has great potential for treatment of uranium and thorium-containing effluents.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yuting Liu, Yun Wang, Hongtao Xia, Qinghua Wang, Xinchen Chen, Jianqi Lv, Yang Li, Jiankun Zhao, Yan Liu, Dingzhong Yuan
Summary: In this study, green and economical reed straw-derived biochar (RBC) was prepared for uranium(VI) removal. The RBC exhibited larger pores and more oxygen-containing functional groups, providing abundant adsorption sites for uranyl ions. The adsorption process of uranium by RBC could be described by pseudo-second-order kinetics and the Langmuir model.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Chemistry, Physical
Xinchen Chen, Hongtao Xia, Jianqi Lv, Yuting Liu, Yang Li, Lejin Xu, Chuting Xie, Yun Wang
Summary: Reasonable surface modification and increasing structural porosity are crucial for enhancing the adsorption performance of biochar. This study synthesized bamboo-based magnetic biochar modified with Fe3O4 through the one-can method. The results demonstrated that Fe3O4 @ MBC exhibited excellent adsorption properties due to its increased surface area and magnetic response. The adsorption mechanism involved chemical complexation and electrostatic action, making it a promising solution for radioactive wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Xinchen Chen, Yang Wang, Hongtao Xia, Qi Ren, Yang Li, Lejin Xu, Chuting Xie, Yun Wang
Summary: Significant selectivity, reasonable surface modification and increased structural porosity are key factors to improve the competitiveness of biochar in the adsorption field. In this study, hydrothermal bamboo-derived biochar modified with phosphate groups (HPBC) was synthesized using one-can strategy. The results showed that HPBC had excellent selectivity for U(VI), high adsorption capacity, and a mechanism involving electrostatic action and chemical complexation.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2023)
Article
Chemistry, Analytical
Jianqi Lv, Hongtao Xia, Qi Ren, Yang Wang, Yuting Liu, Zihao Feng, Yang Li, Yanjun Du, Yun Wang
Summary: Amino functionalized lotus seedpods-derived biochar (LSBC-NH2) was prepared using natural lotus seedpods as raw material and urea as nitrogen source through hydrothermal method for the removal of uranium (VI) from aqueous solution. LSBC-NH2 exhibited a thin sheet structure with a rough porous surface and cluster structure, and possessed good thermal stability. Kinetics, isotherms, and thermodynamics studies showed that the adsorption of uranium (VI) by LSBC-NH2 was a spontaneous, endothermic, and single-layer chemisorption process, with a maximum uranium (VI) adsorption capacity of 367.99 mg g(-1). The adsorption mechanism indicated that the adsorption process of LSBC-NH2 for uranium (VI) involved amino, carboxyl, and hydroxyl groups in LSBC-NH2.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xinchen Chen, Yun Wang, Jianqi Lv, Zihao Feng, Yuting Liu, Hongtao Xia, Yang Li, Changfu Wang, Kai Zeng, Yan Liu, Dingzhong Yuan
Summary: MnO2 modified bamboo-derived biochar composites were successfully synthesized and demonstrated to have a large adsorption surface area and abundant oxygen-containing functional groups, making them feasible for treating uranium-containing wastewater with low cost and competitive adsorption capacity.
NEW JOURNAL OF CHEMISTRY
(2022)
