Article
Materials Science, Multidisciplinary
Shi Liu, Bingjian Li, Yinjie Zhou, Xixi Xu, Rong Yang, Qiuze Wang, Jinchun Li
Summary: The NHGH-0.2 electrode, synthesized with nitrogen doped and hydrogen peroxide etching, exhibits a high specific surface area and hierarchical holey structure, leading to excellent electrochemical performance and cycling stability for capacitive deionization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Faheem Ahmed, Ahmad Umar, Shalendra Kumar, Nagih Mohammed Shaalan, Nishat Arshi, Mohd Gulfam Alam, P. M. Z. Hasan, Shahid M. Ramay, Rizwan Khan, Abdullah Aljaafari, Adil Alshoaibi
Summary: In this study, a highly stable capacitive deionization (CDI) electrode was fabricated using reduced graphene oxide (RGO) as the positive electrode and spherical-like manganese dioxide nanoparticles decorated RGO sheets (MnO2/RGO) as the negative electrode, which selectively captured salt ions from saline solution. The MnO2/RGO electrodes exhibited a large specific capacitance and lower internal resistance, making them suitable for desalination applications. The MnO2/RGO//RGO-based CDI device showed higher salt uptake capacity and average salt adsorption capacity compared to recent electrode materials, indicating its potential for producing portable drinking water from seawater.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Physical
Gyuleen Park, Sung Pil Hong, Changha Lee, Jaehan Lee, Jeyong Yoon
Summary: This study achieved selective fluoride removal in a CDI system using rGO/HA composite material, which showed a significantly higher fluoride removal capacity compared to the traditional AC electrode. Experimental results demonstrate an increase in fluoride removal capacity with the application of adequate voltage. Furthermore, the rGO/HA electrode exhibits stability and reusability in operation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Javad Safaei, Seyed Mostafa Hosseinpour Mashkani, Hao Tian, Caichao Ye, Pan Xiong, Guoxiu Wang
Summary: The 2D NbOPO4/rGO heterostructure, synthesized through electrostatic self-assembly, exhibits excellent CDI performance, including high specific capacitance and electrosorption capacity, along with high stability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Chemical
Zeqiu Chen, Xingtao Xu, Kai Wang, Fanyue Meng, Ting Lu, Likun Pan
Summary: In this study, a dual confinement strategy was proposed to enhance the application of metal oxide nanoparticles in capacitive deionization (CDI). By combining Nb2O5 with Nb2CTx MXene and rGO, the hybrid material exhibited improved electronic conductivity and structural stability, resulting in outstanding desalination performance.
Article
Engineering, Chemical
Xu Shang, Zhenzhen Liu, Wenxin Ji, Haibo Li
Summary: Capacitive deionization (CDI) is a promising technique for removing charged species from brackish water. In this study, a robust CDI electrode is designed by synthesizing Li3VO4 on reduced graphene oxide (LVO/rGO) to enhance Li+ extraction capacity. The optimized LVO/rGO composite exhibits improved specific surface area (SSA) and electrochemical performance, surpassing pure LVO. Meanwhile, the parallel configuration of LVO/rGO with Activated Carbon (AC) shows superior Li+ extraction capacity in LiCl solution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ruige Li, Dapeng Wu, Jingke Song, Yachao He, Wenyu Zhu, Xiaopeng Wang, Lixia Wang, Nhlanhla Mtelisi Dube, Kai Jiang
Summary: A composite electrode with 3D Cu-Ni foam and reduced graphene oxide was synthesized for capacitive deionization. The morphology and defect content of the electrode can be adjusted by varying the substitution reaction time to enhance salt adsorption capacity. The electrode maintained over 91% of its original salt adsorption capacity after 20 cycles of use.
Article
Engineering, Chemical
Ruige Li, Jingke Song, Songsong Zhi, Xiaopeng Wang, Lixia Wang, Kai Jiang, Dapeng Wu
Summary: This study successfully prepared a laser-induced 3D porous flower-like Fe2O3/reduced graphene oxide (rGO) modified nickel foam (NF) electrode (LIFG/NF), and investigated the impacts of different laser etching power on the electrode performance. The results showed that the electrode with proper laser power exhibited high specific surface area, good wettability, improved electrochemical performance, excellent salt adsorption capacity and rate, as well as good deionization stability and reusability in CDI experiments.
Article
Materials Science, Multidisciplinary
Alessandro Pedico, Sergio Bocchini, Elena Tresso, Andrea Lamberti
Summary: A novel functionalized graphene oxide (fGO) is proposed for water desalination in this study. The fGO is obtained through functionalization and coating to create a porous electrode, which shows remarkable improvement in desalination performance. These findings lay the groundwork for future research.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Analytical
Eric R. Halabaso, Pooja Somnath Dayma, Jonathan W. L. Salvacion, Ruey-an Doong
Summary: Copper tungstate (CuWO4) decorated 2-dimensional reduced graphene oxide (CWO/rGO) nanocomposite with large specific surface area and abundant mesopores was synthesized and used for capacitive deionization (CDI). The CuWO4 provides electroactive sites and the rGO enhances electric conductivity and offers mesoporous channels for electrosorption of ions. The CWO/rGO exhibits high specific capacitances, specific electrosorption capacity, charge efficiency, low energy consumption, and long-term stability, making it a potential material for brackish water desalination.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Energy & Fuels
Guojie Chao, Dong Wang, Yang Wang, Xu Zhang, Suli Chen, Yufeng Wang, Wei Zong, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: In this study, a scalable method for the preparation of Co-doped graphene/carbon hybrid aerogel with hierarchically porous structure was reported. The CGCA samples demonstrated improved electrical conductivity, enhanced capacitance storage capacity, and good cyclic stability. The supercapacitor assembled with CGCA electrodes showed high specific capacitance and could provide a high energy density at a power density.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Chemical
Shreerang D. Datar, K. Mohanapriya, Dinesh J. Ahirrao, Neetu Jha
Summary: A comparison was made between flow-between and flow-through capacitive deionization setups using solar reduced graphene oxide (SRGO) as an electrode material. Different cations (sodium and potassium) were studied to analyze their effect on electrosorption performance, with different voltage and salt solution concentrations used. The results were validated using Langmuir and Freundlich adsorption isotherms, along with a modified Donnan (mD) model for additional validation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Huiting Xu, Meng Li, Siqi Gong, Fan Zhao, Yang Zhao, Chunli Li, Junjie Qi, Zhiying Wang, Honghai Wang, Xiaobin Fan, Wenchao Peng, Jiapeng Liu
Summary: In this study, a two-dimensional titanium carbide/reduced graphene oxide superlattice heterostructure was successfully synthesized and investigated as electrode material for capacitive deionization. The heterostructure exhibited superior performance, including high salt adsorption capacity and long-term cycling stability. The mechanism involved was comprehensively characterized. This study provides a new pathway for designing high-performance electrode materials for capacitive deionization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Environmental Sciences
Muaz Al Radi, Enas Taha Sayed, Hussain Alawadhi, Mohammad Ali Abdelkareem
Summary: Capacitive deionization (CDI) is a promising water desalination method due to its high performance, energy efficiency, and environmental friendliness. Graphene, a carbon derivative, is widely used as an electrode material in CDI due to its exceptional electrical conductivity and large surface area. Recovering some of the input energy can further reduce the energy consumption of CDI and the recovered energy can be utilized for other purposes.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Xun-rui Wang, Xiang Wang, Hong-en Nian, Tong Chen, Lin Zhang, Shuang Song, Jin-hong Li, Yu Wang
Summary: In this study, a hierarchically architectured hybrid electrode was developed by spinning MXene into PAN-based carbon nanofibers, resulting in a highly conductive carbon nanocomposite framework. The obtained membrane electrodes showed outstanding specific capacitance, low charge transfer resistance, excellent cycling performance, and selective adsorption properties for divalent ions in high-salt water.
ACS APPLIED MATERIALS & INTERFACES
(2022)