Article
Nanoscience & Nanotechnology
Laszlo Szabo, Xingtao Xu, Koichiro Uto, Joel Henzie, Yusuke Yamauchi, Izumi Ichinose, Mitsuhiro Ebara
Summary: The study focuses on the relationship between the structure and electrochemical performance of porous carbon nanofibers (PCNFs) derived from the biobased building block chitosan. The researchers found that by varying the amount and molecular weight of the sacrificial pore-forming polymer, they could tailor the structure of the PCNFs to have a high surface area and hierarchical pore network, resulting in fast ion diffusion, high specific capacitance, and rate capability. The chitosan-based materials demonstrated high stability and charge efficiency, making them promising for use in charge storage devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Mamta Sham Lal, Ramaprabhu Sundara
Summary: This research developed a flexible electrode based on electrospun porous carbon nanofibers and TiO2 nanoparticles, and synthesized the PCNFs/TiO2 composite through a simple in-situ activation procedure. The composite exhibited a high specific surface area and pore volume, and the CDI unit assembled with the flexible electrodes demonstrated excellent salt electrosorption capacity and stability in high salt concentration and conductivity solutions, making it a promising option for future flexible CDI applications.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Lu Guo, Jintao Zhang, Meng Ding, Chengding Gu, Sareh Vafakhah, Wang Zhang, Dong-sheng Li, Pablo Valdivia Y. Alvarado, Hui Ying Yang
Summary: The cathode material, Co3O4@CNF@CNT, prepared using an unscalable electrospinning method, showed excellent pseudocapacitive performance and high rate performance, leading to improved salt adsorption capacity and rate in the HCDI system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Huizhong Zhang, Jiayu Tian, Xiangke Cui, Jiansheng Li, Zhigao Zhu
Summary: In capacitive deionization, porous carbon with high specific surface area has attracted attention due to its abundant active adsorption sites. In this study, a highly mesoporous carbon nanofiber electrode was prepared, which showed high salt adsorption capacity and improved electrical double-layer capacitance.
Article
Chemistry, Applied
Minjun Kim, Hyunsoo Lim, Xingtao Xu, Md Shahriar A. Hossain, Jongbeom Na, Nur Nadia Awaludin, Jagrat Shah, Lok Kumar Shrestha, Katsuhiko Ariga, Ashok Kumar Nanjundan, Darren J. Martin, Joseph G. Shapter, Yusuke Yamauchi
Summary: Biomass-derived carbons are widely studied as cost-effective energy storage materials with high performance due to their high specific surface area and the effectiveness of strategies like increasing surface area and introducing heteroatom doping. Porous carbon materials derived from sorghum stem show significantly higher specific capacitance after KOH activation, demonstrating their versatility in applications like capacitive deionization. The performance trend observed in both supercapacitors and CDI for all carbon samples is consistent due to the exploitation of carbon material's electrostatic double-layer capacitance behavior.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Environmental Sciences
Wei Zhang, Can Jin, Zhenyu Shi, Liang Zhu, Lin Chen, Yunlong Liu, Hao Zhang
Summary: In this study, nitrogen-doped polyporphyrin derived porous carbons (NPPCs) were prepared by a one-pot reaction from biobased furan derivative, followed by activation, for efficient capacitive deionization. The NPPCs exhibited cross-linked interconnected nanosphere chain-like structures and a rich pore structure, resulting in high specific surface area and large pore volume. The electrochemical measurements showed good conductivity, outstanding stability, and extraordinary specific capacitance of NPPCs. The NPPC-800 electrodes demonstrated high salt adsorption capacity and outstanding cycling stability in desalination tests, indicating the potential of biobased porous carbon material in CDI technique.
Article
Materials Science, Multidisciplinary
Bethwel K. Tarus, Yusufu A. C. Jande, Karoli N. Njau
Summary: Capacitive deionization is a promising method for water desalination, and the use of nanostructured porous carbon materials, such as electrospun carbon nanofibers, can enhance desalination performance. Compositing carbon nanofibers with faradaic materials can improve ion storage capacity.
NEW CARBON MATERIALS
(2022)
Article
Engineering, Chemical
Chunyu Chen, An Liu, Chi Fei, Bin Hui, Yingying Li, Deng Guan, Dianchun Ju
Summary: This study presents a scalable and eco-friendly process for the preparation of N-doped polyhedral macrotube carbon arrays. These arrays exhibit a high density of adsorption sites and good conductivity, making them suitable for use as electrodes in both supercapacitors and capacitive deionization cells. The N-ALS electrodes demonstrate high specific capacitance and excellent cycling stability in supercapacitors, as well as a high salt adsorption capacity and retention rate in capacitive deionization cells.
Article
Engineering, Chemical
Lijun Gao, Siyu Liu, Qiang Dong, Chao Hu, Jieshan Qiu
Summary: This study presents the preparation of sulfur and nitrogen co-doped carbon nanofibers (SCNFs) by a facile co-electrospinning strategy coupled with subsequent high-temperature heat treatment, and their application as monolithic and binder-free electrodes for membrane capacitive deionization (MCDI). The SCNFs exhibit superior electrosorption ability and excellent cycling stability, with the salt adsorption capacity up to 29.50 mg g(-1) and the current efficiency higher than 80% when desalting 500 mg L-1 NaCl solution at the voltage of 1.4 V. The heteroatom doping strategy can improve the electrical conductivity, wettability, and pore structure of the SCNFs, providing more active sites for ions adsorption. This finding sheds new light on the design of high-performance carbon-based electrodes for electrochemical MCDI application.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Electrochemistry
Boshuang Zhang, Jingjing Li, Bin Hu, Yiwen Wang, Xiaohong Shang, Pengfei Nie, Jianmao Yang, Jianyun Liu
Summary: In this study, ultrathin 8-MnO2 nanosheets were successfully embedded on electrospun porous carbon nanofibers (PCNF) to create flexible 8-MnO2@PCNFs electrodes. These electrodes exhibited high specific capacitance and ultrafast adsorption speed in capacitive deionization (CDI). The interconnected structure of 8-MnO2 nanosheets inserted in PCNF also provided excellent recycling stability in CDI devices.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Pengfei Nie, Shiping Wang, Xiaohong Shang, Bin Hu, Manhong Huang, Jianmao Yang, Jianyun Liu
Summary: This study presents a simple method to prepare self-supporting carbon nanofiber electrodes with opposite surface charges to enhance the deionization performance of i-CDI devices. The asymmetric capacitor device, with P-CNF as cathode and N-CNF as anode, achieved high performance deionization and demonstrated superior cycling stability and regenerability. The carbon nanofibers with significant surface charge difference show promise for i-CDI applications.
Article
Engineering, Chemical
Shoujun Wang, Dezhi Chen, Zhi-Xia Zhang, Yi Hu, Hongying Quan
Summary: N-doped hierarchically porous carbons with excellent adsorption capacity and fast ion transport capability were prepared and used as CDI electrode materials for efficient removal of heavy metal pollutants from water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Qi Dong, Dongxu Yang, Liang Luo, Qiang He, Fangheng Cai, Si Cheng, Yi Chen
Summary: This study utilized waste biomass to prepare porous biochar electrodes, achieving an improved fluoride removal efficiency and demonstrating the potential application of this method in environmental remediation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Mingming He, Mingzhu Zong, Peng Zhang, Silu Huo, Xueli Zhang, Xue Song, Kexun Li
Summary: In this study, nitrogen-doped porous carbon (NPC) was synthesized and facilely activated to obtain hierarchical porous carbon (KNPC) for capacitive deionization (CDI) desalination. The optimized KNPC exhibited outstanding desalination performance and regeneration performance, which can be attributed to its abundant pore structures, large specific surface area, and excellent electrochemical properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xinyi Gong, Shizhan Feng, Luxiang Wang, Dianzeng Jia, Nannan Guo, Mengjiao Xu, Lili Ai, Qingtao Ma, Qing Zhang, Zuyun Wang
Summary: Defect engineering is an effective approach for modulating the properties of carbon materials, and defect-rich hierarchical porous carbon (IHPC) fabricated through sol-gel method shows high desalination capacity and stability in capacitive deionization applications. The introduction of intrinsic defects optimizes the distribution of electron density and enhances saline ions adsorption. IHPC exhibits abundant adsorption sites, rapid charge transfer kinetics, and rapid ion diffusion.
Article
Engineering, Environmental
Wei Shi, Pengfei Nie, Guodong Zhu, Bin Hu, Jianmao Yang, Jianyun Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Electrochemistry
Pengfei Nie, Junbin Yan, Guodong Zhu, Jianyun Liu
ELECTROCHIMICA ACTA
(2020)
Article
Engineering, Environmental
Jialing Song, Manhong Huang, Nan Jiang, Shengyang Zheng, Tianwei Mu, Lijun Meng, Yanbiao Liu, Jianyun Liu, Gang Chen
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Chemistry, Analytical
Qian Tang, Guodong Zhu, Yuanxin Ge, Jianmao Yang, Manhong Huang, Jianyun Liu
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Analytical
Guodong Zhu, Qian Tang, Manhong Huang, Jianmao Yang, Ran Xu, Jianyun Liu
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Physical
Bin Hu, Yanbo Wang, Xiaohong Shang, Kaibing Xu, Jianmao Yang, Manhong Huang, Jianyun Liu
Summary: By tuning the Fe content in the Fe-CNF precursor, Mn3O4-Fe3O4@C hybrids with different structures were synthesized, exhibiting enhanced capacitor performance due to their excellent conductivity and redox properties.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Bin Hu, Xiaohong Shang, Pengfei Nie, Boshuang Zhang, Kaibing Xu, Jianmao Yang, Jieshan Qiu, Jianyun Liu
Summary: A nitrogen-doped nanotubular carbon aerogel with high porosity was synthesized through a simple in situ template-growth approach using melamine-cyanuric acid supramolecular aggregates. It showed a unique one-dimensional structure with high N content, superhigh specific surface area, large internal diameter, and uniform wall thickness. The aerogel exhibited a superior specific capacitance of 563 F g(-1) at 1 A g(-1) and a high energy density of 21 Wh kg(-1) at a power density of 1217 W kg(-1) as an electrode material for supercapacitors.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Zhaoyu Tang, Xiaohong Shang, Bin Hu, Pengfei Nie, Wei Shi, Jianmao Yang, Jianyun Liu
Summary: A versatile method for growing a series of metal hexacyanoferrates on carbon nanofiber was proposed, resulting in high stability composites with excellent electrochemical performance. The obtained self-supporting composites showed high specific capacitance and remarkable rate performance, indicating great potential for high performance supercapacitors.
Article
Engineering, Chemical
Pengfei Nie, Shiping Wang, Xiaohong Shang, Bin Hu, Manhong Huang, Jianmao Yang, Jianyun Liu
Summary: This study presents a simple method to prepare self-supporting carbon nanofiber electrodes with opposite surface charges to enhance the deionization performance of i-CDI devices. The asymmetric capacitor device, with P-CNF as cathode and N-CNF as anode, achieved high performance deionization and demonstrated superior cycling stability and regenerability. The carbon nanofibers with significant surface charge difference show promise for i-CDI applications.
Article
Chemistry, Analytical
Xiaoyuan Zhu, Guodong Zhu, Yuanxin Ge, Boshuang Zhang, Jianmao Yang, Bin Hu, Jianyun Liu
Summary: A hybrid of amino-containing Fe-based metal-organic frameworks decorated with gold nanoparticles was successfully fabricated via a simple adsorption/reduction method. The composite showed good charge transfer properties and high sensitivity for As(III) detection, with excellent repeatability and selectivity in real water samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Xiaohong Shang, Jianyun Liu, Bin Hu, Pengfei Nie, Jianmao Yang, Boshuang Zhang, Yiwen Wang, Fei Zhan, Jieshan Qiu
Summary: A two-step strategy is reported to fabricate highly conductive and stable CNT-strung LiMn2O4 (CNT-s-LMO) electrode by stringing Mn3O4 particles with CNT and then converting the hybrids into CNT-s-LMO through hydrothermal lithiation. The resulting structure of CNT-s-LMO electrode exhibits excellent conductivity, high specific capacitance, and enhanced rate performance. The CNT-s-LMO-based HCDI cell shows a high Li+ extraction percentage in brine and outstanding lithium selectivity with exceptional cycling stability.
Article
Chemistry, Physical
Yongsheng Hu, Bin Hu, Yuanxin Ge, Pengfei Nie, Jianmao Yang, Manhong Huang, Jianyun Liu
Summary: This study presents a method for the selective removal of highly fluoridated water using UiO-66-NH2 synthesized on the surface of porous carbon nanofibers. The UiO-66-NH2 @PCNF electrode demonstrated exceptional adsorption performance and stability, with a high F- removal capacity. The electrode also showed good selectivity for F- over other ions, making it a promising candidate for the purification of fluoride-contaminated water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Jun Yu, Bin Hu, Pengfei Nie, Xiaohong Shang, Boshuang Zhang, Zhaoyu Tang, Jianmao Yang, Jianyun Liu
Summary: The cobalt-decorated nitrogen-rich carbon material Co@C-NCNTs showed high efficiency in degrading NX, with enhanced electron transfer in the PMS system. The introduction of Zn led to the formation of abundant CNTs with high N-doping, greatly inhibiting the release of cobalt and improving catalytic activity. At the optimal Zn/Co ratio, Co@C-NCNTs delivered 92% removal of NX in 30 min, significantly higher than single Co-MOF based catalyst.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Electrochemistry
Hao Wang, Wenwen Jiang, Pengfei Nie, Bin Hu, Yongsheng Hu, Manhong Huang, Jianyun Liu
Summary: In this study, a new method for defluoridation was developed by synthesizing lanthanum-doped hydroxyapatite-modified three-dimensional reduced graphene oxide. The resulting electrode showed excellent selectivity and high cycle stability for fluoride removal in a capacitive deionization system, achieving a fluoride removal rate of 90.5% with an effluent concentration below the permissible limit of the World Health Organization.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Chemical
Pengfei Nie, Bin Hu, Xiaohong Shang, Zhengzheng Xie, Manhong Huang, Jianyun Liu
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
