Article
Engineering, Chemical
Imamdin Chandio, Farooque Ahmed Janjhi, Ayaz Ali Memon, Shahabuddin Memon, Zubair Ali, Khalid Hussain Thebo, Azhar Ali Ayaz Pirzado, Ayaz Ali Hakro, Waheed S. Khan
Summary: A class of GO-based composite membranes with large interlayer spacing was fabricated using serine amino acid as a cross-linker and reducing agent, which showed outstanding separation efficiency and high permeance for organic dyes and salts. The membranes exhibited good rejection for various substances and high stability in aqueous environment, indicating their potential application in water filtration and desalination.
Article
Engineering, Chemical
Yong Zhang, Bingyu Mei, Xiaoyu Tian, Lingyi Jia, Wenkun Zhu
Summary: Membrane separation technology is widely used in wastewater treatment, especially for U(VI)-containing wastewater. A novel GO/HAP membrane was prepared by a simple in-situ deposition self-assembly method, with high water flux and U(VI) retention rate. It shows potential for water environment renovation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jing Guo, Hongfei Bao, Yanqiu Zhang, Xi Shen, Jang-Kyo Kim, Jun Ma, Lu Shao
Summary: This study demonstrates the impact of molecular intercalation on the structure of graphene oxide membranes, revealing significant effects of different-sized intercalants on stacking. By intercalating with optimal-sized molecules, a nanostructured GO membrane with superior robustness and ultrafast water permeance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Peishan Li, Long Jiang, Lingfeng Liu, Pengxiang Zhao, Gaoyi Xie, Xiaolong Xu, Changyu Liu, Jianbo Jia, Mingchao Liu, Mengchen Zhang
Summary: This paper proposes a strategy to stabilize graphene oxide membranes using chelation-based metal cation immobilization. By firmly immobilizing metal cations and decorating with hydrophilic groups, the membranes exhibit superior sieving performance for mono/divalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Zheng Wang, Junyong Zhu, Shuainan Xu, Yatao Zhang, Bart Van der Bruggen
Summary: A stable composite membrane was developed by utilizing Cu-TCPP nanosheets to stabilize GO membranes, resulting in significantly improved water permeance and remarkable solute retention.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Qingbo Huang, Song Liu, Yanan Guo, Gongping Liu, Wanqin Jin
Summary: In this study, a graphene oxide (GO) membrane with charged interlayer channels was developed for the separation of mono-/di-valent ions. The membrane achieved selective transport of monovalent ions by utilizing size-sieving and electrostatic repulsion. The introduction of polyethyleneimine (PEI) into the interlayer channels not only controlled the charge property but also increased the hydrophilicity of the membrane surface. The optimal GO-PEI membrane exhibited high permeation rates and selectivity for monovalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Yinjie Lv, Lei Dong, Lvyang Cheng, Tianyi Gao, Cong Wu, Xin Chen, Tao He, Yuanyuan Cui, Wei Liu
Summary: By intercalating graphene oxide membranes with selective crown ethers, precise tailoring of monovalent cation sieving technology with enhanced water throughput is achieved. The critical interlayer distance is found to maximize water flux without sacrificing ion selectivity. The intercalated membranes can separate various specific cations with remarkably high selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Shabnam Pathan, Sk Safikul Islam, Ria Sen Gupta, Barnali Maity, P. Rajasekhar Reddy, Samir Mandal, K. Anki Reddy, Suryasarathi Bose
Summary: This study reports mechanically robust, chlorine-tolerant, self-assembled nanostructured graphene oxide (GO) membranes for precise molecular sieving. The modification of GO nanosheets allows for the alignment and stabilization of the GO LLC structure in a polar aprotic solvent. The modified GO membranes exhibit considerably improved salt rejection and water flux compared to shear-aligned GO membranes.
Article
Engineering, Chemical
Hadi Ahmadi, Mohammad Zakertabrizi, Ehsan Hosseini, Withita Cha-Umpong, Mojtaba Abdollahzadeh, Asghar Habibnejad Korayem, Vicki Chen, Ho Kyong Shon, Mohsen Asadnia, Amir Razmjou
Summary: This study introduces an approach to enhance the Li+ selectivity of 2D membranes by inducing asymmetry in the morphology and chemistry of their nanochannels. This approach allows for manipulation of cation hydration shells through a sudden change in nanochannel size and the addition of nucleophilic traps. The design results in a new ion transport mechanism called Energy Surge Baffle (ESB) that significantly enriches Li+ selectivity.
Article
Chemistry, Multidisciplinary
Dian Gong, Yichen Yin, Huiling Chen, Bing Guo, Ping Wu, Yue Wang, Yang Yang, Zhikao Li, Yue He, Gaofeng Zeng
Summary: This study develops a facile method to prepare perfluoro-alkyl grafted graphene membranes on porous ceramic, demonstrating efficient desalination with ultrahigh antiwetting surfaces and oriented mesoporous surface entrances. These membranes exhibit high rejection rates and water fluxes, as well as robust stability during desalination.
Article
Nanoscience & Nanotechnology
Maryam Mirzaei, Javad Karimi-Sabet, Sepehr Nikkho, Jafar Towfighi-Darian
Summary: A novel transfer technique for the fabrication of graphene membrane on a porous polymer substrate was developed in this study, resulting in crack-free large-area graphene film. The graphene membrane exhibited high gas molecular sieving performance, especially in helium and hydrogen gas separation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Andrei A. Eliseev, Konstantin E. Gurianov, Andrei. A. Poyarkov, Maria A. Komkova, Ilia S. Sadilov, Andrei P. Chumakov, Dmitrii I. Petukhov
Summary: This paper presents a comparative study on the swelling processes of free-standing graphene oxide membranes and GO laminates encapsulated with epoxy glue. The research reveals that the d-spacing of free-standing graphene oxide membranes can vary greatly depending on the ambient humidity and electrolyte type and concentration. On the other hand, the swelling of epoxy-encapsulated GO is limited. The physical constriction and intercalation of amines into GO laminates are believed to be the causes of this swelling suppression.
Article
Engineering, Chemical
Xue Zhang, Lingyi Li, Dadong Shao
Summary: In this study, a novel polyoxometalate modified ammoniated graphene oxide (PHGO) was synthesized and found to be an effective adsorbent for removing U(VI) from radioactive wastewater. PHGO exhibited a high efficiency in U(VI) removal and showed good stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Saedah R. Al-Mhyawi, D. M. D. Bader, Majed A. Bajaber, Samia M. Abd El Dayem, Ahmed H. Ragab, Khaled A. Abd El-Rahem, Mohamed A. Gado, Bahig M. Atia, Mohamed F. Cheira
Summary: Heavy metal contamination is a global environmental issue with significant public health risks. This study introduces an eco-friendly approach of using a composite material called ZrO2/GO, obtained from synthesized nano zirconium oxide (ZrO2) and graphene oxide (GO) prepared from spent carbon rods, to address water contamination caused by heavy metals.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Environmental
Jinglei Liu, Guizheng Zou, Shifeng Hou
Summary: A multi-effect separation membrane with GO nanosheets was fabricated using L-cysteine functionalized gold nanoparticles as scaffolds and spacers. The membrane showed stability due to the robust spacer provided by the gold nanoparticles. By controlling the pH, the membrane achieved controllable ultrahigh permeance for size sieving. Furthermore, the membrane exhibited high enantioselectivity for chiral separation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Peng Shi, Ze-Yu Liu, Xue-Qiang Zhang, Xiang Chen, Nan Yao, Jin Xie, Cheng-Bin Jin, Ying-Xin Zhan, Gang Ye, Jia-Qi Huang, Stephens E. Ifan, Titirici Maria-Magdalena, Qiang Zhang
Summary: The study proposes a strategy of utilizing the interaction between a polar polymer host and solvent molecules to achieve a stable SEI and uniform Li deposition in a working battery. The composite Li anode with a PAN host demonstrates improved cycling performance and provides new guidance for designing practical composite Li anodes.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Review
Environmental Sciences
Zhe Wang, Lingyu Zhang, Kangjie Zhang, Yuexiang Lu, Jing Chen, Shuqin Wang, Baowei Hu, Xiangke Wang
Summary: It is crucial to develop methods and materials for detecting and removing radioactive ions with high-heat release or long half-life. Carbon dots and their composite materials are widely used due to their plentiful raw materials, facile synthesis, functional process, unique optical property, and abundant functional groups. This review focuses on the preparation of CDs and composite materials for detecting and adsorbing radioactive ions, exploring their application in detecting uranium, iodine, europium, strontium, samarium, and more.
Article
Chemistry, Multidisciplinary
Hongpeng Li, Qi Qing, Liyuan Zheng, Lan Xie, Zhiqiang Gan, Liqin Huang, Shuang Liu, Zhe Wang, Yuexiang Lu, Jing Chen
Summary: Photocatalytic removal of uranium is a significant research topic in nuclear wastewater treatment. In this study, carbon dots/carbon nitride (CDs/CN) composites were synthesized and SerCDs/CN with excellent removal performance was identified. The introduction of CDs led to higher photocurrent density, lower interfacial charge transfer impedance, and narrower band gap, resulting in improved removal performance. SerCDs/CN exhibited a high removal capacity of up to 1690 mg/g and the reaction could be conducted under air atmosphere, showing potential for practical application.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biochemical Research Methods
Zhe Wang, Liyuan Zheng, Qi Cheng, Xuedong Li, Liqin Huang, Yuexiang Lu
Summary: Graphene oxide (GO) is a versatile optical platform for imaging and sensing, but its fluorescence is relatively weak. In this study, we observed metal-enhanced fluorescence (MEF) of GO on a silver substrate, which significantly increased the fluorescence intensity. Visual and analytical techniques were used to investigate the MEF behavior and its response to different metal ions. The direct contact between GO and the metal substrate exhibited strong MEF without quenching, allowing for three-dimensional optical imaging and sensing.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Guilin Wei, Xiaoyan Shu, Mingfen Wen, Fen Luo, Yuexiang Lu, Jing Chen, Xirui Lu, Lingshuang Li, Faqin Dong
Summary: This study investigates the immobilization of TRPO waste in Gd2Zr2O7 ceramics using a simple sintering method, achieving a high solid-solubility limit. The results demonstrate an efficient immobilization method for TRPO waste.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Weilian Zheng, Yijian Zhao, Xinyi Lin, Qiaojuan Zhang, Keren Xiao, Nan Cheng, Xiaohong Mei, Yuexiang Lu, Zhiyi Yao
Summary: The detection of picric acid is crucial for environmental protection and public safety. This study presents a fluorescent probe based on perylene diimide derivative, which allows for sensitive and selective detection of picric acid in 100% aqueous solution. The probe's self-assembly relies on the synergistic effect of non-covalent interactions including static electricity, hydrophobic interaction, charge transfer, and π-π stacking.
Article
Chemistry, Applied
Jingye Zhao, Ziyi Wang, Yuexiang Lu, Hui Li, Yuwei Guan, Wei Huang, Yueying Liu
Summary: A facile and environmentally friendly method for synthesizing copper nanoclusters (CuNCs) has been developed. It only takes 2 minutes to synthesize CuNCs by adjusting the pH value of a glutathione and copper ions mixture at room temperature. CuNCs exhibit strong fluorescence emission with excitation and emission peaks at 340 nm and 646 nm, respectively. Additionally, the physical state of CuNCs can be manipulated by the presence of aluminum and fluoride ions, enabling the development of luminescent off-on-off nanoswitch.
Article
Chemistry, Multidisciplinary
Xiaoyan Shu, Qi Qing, Mingfen Wen, Wei Zhang, Yuexiang Lu, Yanrong Cheng, Jing Chen, Faqin Dong, Xirui Lu
Summary: In this study, the co-doping effects of alpha and beta waste in a Gd2Zr2O7-based matrix were investigated. The effects of Ce4+ and Sr2+ content on the phase, unit cell parameters, mechanical property, etc., were systematically studied and compared with theoretical calculations. The results obtained from the virtual crystal approximation theory agreed well with the experimental results.
Article
Materials Science, Multidisciplinary
Fen Luo, Beilong Yuan, Mingfen Wen, Yulong Miao, Yuexiang Lu, Jing Chen, Xirui Lu, Guilin Wei, Faqin Dong
Summary: A series of Nd and Ce co-doped Gd2Zr2O7 ceramics were synthesized and their properties were investigated. It was found that the structure of the materials changed with the increase of doping amount. Within a certain range, doping could improve the hardness and chemical stability of the materials.
Article
Materials Science, Ceramics
Yang He, Xiaoyan Shu, Lingshuang Li, Mingfen Wen, Guilin Wei, Yuexiang Lu, Yi Xie, Faqin Dong, Shunzhang Chen, Kuibao Zhang, Xirui Lu
Summary: Based on the chemical composition and secondary diagenetic property, a natural aluminosilicate was proposed as an immobilization matrix for the simulated An3+ waste (Nd2O3). Sintering at 1500 degrees C for 6 h was found to be a prerequisite for the preparation of the waste form. The glass-ceramic structure-dominated waste form can achieve a loading content of 16 wt.% Nd2O3.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Multidisciplinary Sciences
Zhipeng Wang, Liqin Huang, Xue Dong, Tong Wu, Qi Qing, Jing Chen, Yuexiang Lu, Chao Xu
Summary: An efficient separation strategy based on ion sieving in graphene oxide membrane is reported for the separation of actinides from lanthanides. This work realizes the group separation of actinides from lanthanides under highly acidic conditions by a simple ion sieving strategy and highlights the great potential of utilizing graphene oxide membrane for nuclear waste treatment.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Yanrong Cheng, Xiaoyan Shu, Mingfen Wen, Yuexiang Lu, Pan Tan, Xirui Lu, Lingshuang Li, Faqin Dong
Summary: The solidification of nuclear waste has significant implications for development, and scientists have fabricated a simulated nuclear waste form using the sintering process of diopside. The study found that the Fe element in diopside affects the amorphization process and mechanical properties of the waste form. A natural analog in the form of a glassy bulk was discovered, which can solidify the simulated trivalent actinide of Nd3+. The addition of Nd2O3 was found to affect the polymerization degree of glass components in the waste form. Q3 unit was identified as a key component, and the loading capacity of Nd2O3 reached 19 wt.%. The waste form has a silicate-apatite structure with even distribution, showing promising mechanical properties.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Nanoscience & Nanotechnology
Shuang Liu, Xuedong Li, Liqin Huang, Qi Qing, Daniel-James Maguire, Nakkyu Chae, Zhe Wang, Jing Chen, Yuexiang Lu
Summary: A tunable carbon nitride nanostructure synthesized using molten salt is reported, with its adsorption capacity and photocatalytic activity adjustable with the synthesis temperature. The carbon nitride nanostructure obtained at 550 degrees C showed the highest photo-catalysis-assisted extraction ability (9.4 times higher than that of g-C3N4), while that obtained at 600 degrees C demonstrated the highest adsorption capacity (51 times higher than that of g-C3N4).
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhe Wang, Bin Li, Hailin Shang, Xue Dong, Liqin Huang, Qi Qing, Chao Xu, Jing Chen, Hongtao Liu, Xiangke Wang, Xiao-Gen Xiong, Yuexiang Lu
Summary: This study proves that photo-induced formation of insoluble uranium peroxide mineral is a feasible method for uranium extraction, without the need for inert gas protection and with good selectivity for coexisting ions.
