Sustainable N-doped lignin-derived porous carbon for ion selectivity in capacitive deionization applications

2021 ◽  
Author(s):  
Saowaluk Chaleawlert-umpon ◽  
Supaporn Phiromrak ◽  
Nuttaporn Pimpha
Keyword(s):  
Porous Carbon ◽  
Self Assembly ◽  
Ion Selectivity ◽  
Crosslinking Agent ◽  
Capacitive Deionization ◽  
Green Materials ◽  
Synthetic Reaction ◽  
Low Toxic

As a green materials, we presented a high ion-selective N-doped lignin-derived porous carbon (NLC) treated with urea. The synthetic reaction occurred through self-assembly of a low toxic crosslinking agent (glyoxal),...

MnO2 decorated porous carbon derived from Enteromorpha prolifera as flow-through electrode for dual-mode capacitive deionization

Desalination ◽  
2021 ◽  
Vol 504 ◽  
pp. 114977
Author(s):  
Yong Liu ◽  
Bo Geng ◽  
Yuchen Zhang ◽  
Xin Gao ◽  
Xin Du ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Capacitive Deionization ◽  
Enteromorpha Prolifera ◽  
Dual Mode ◽  
Flow Through

scholarly journals Long-lasting, monovalent-selective capacitive deionization electrodes

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Eric N. Guyes ◽  
Amit N. Shocron ◽  
Yinke Chen ◽  
Charles E. Diesendruck ◽  
Matthew E. Suss
Keyword(s):  
Water Treatment ◽  
Ionic Conductivity ◽  
Ion Selectivity ◽  
Single Step ◽  
Carbon Electrodes ◽  
Capacitive Deionization ◽  
Treatment Technologies ◽  
Porous Carbon Electrodes ◽  
Monovalent Ion ◽  
Direct Use

AbstractEmerging water purification applications often require tunable and ion-selective technologies. For example, when treating water for direct use in irrigation, often monovalent Na+ must be removed preferentially over divalent minerals, such as Ca2+, to reduce both ionic conductivity and sodium adsorption ratio (SAR). Conventional membrane-based water treatment technologies are either largely non-selective or not dynamically tunable. Capacitive deionization (CDI) is an emerging membraneless technology that employs inexpensive and widely available activated carbon electrodes as the active element. We here show that a CDI cell leveraging sulfonated cathodes can deliver long-lasting, tunable monovalent ion selectivity. For feedwaters containing Na+ and Ca2+, our cell achieves a Na+/Ca2+ separation factor of up to 1.6. To demonstrate the cell longevity, we show that monovalent selectivity is retained over 1000 charge–discharge cycles, the highest cycle life achieved for a membraneless CDI cell with porous carbon electrodes to our knowledge, while requiring an energy consumption of ~0.38 kWh/m3 of treated water. Furthermore, we show substantial and simultaneous reductions of ionic conductivity and SAR, such as from 1.75 to 0.69 mS/cm and 19.8 to 13.3, respectively, demonstrating the potential of such a system towards single-step water treatment of brackish and wastewaters for direct use in irrigation.

An interfacial self-assembly strategy to fabricate graphitic hollow porous carbon spheres for supercapacitor electrodes

Carbon ◽  
2021 ◽  
Vol 182 ◽  
pp. 860
Author(s):  
Xiao-hua Zhang ◽  
Xin-yu Gan ◽  
Bao-sheng Liu ◽  
Xiao-yan Yan ◽  
Xin-xin Zhao
Keyword(s):  
Porous Carbon ◽  
Self Assembly ◽  
Carbon Spheres ◽  
Assembly Strategy ◽  
Porous Carbon Spheres

Facile fabrication of porous carbon nanofibers by electrospun PAN/dimethyl sulfone for capacitive deionization

2015 ◽  
Vol 3 (26) ◽  
pp. 13827-13834 ◽  
Author(s):  
Haojie Pan ◽  
Jianmao Yang ◽  
Shiping Wang ◽  
Zhubiao Xiong ◽  
Wenshu Cai ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Capacitive Deionization ◽  
Dimethyl Sulfone ◽  
Facile Fabrication

Flexible porous CNFs via facile heat treatment of electrospun PAN/DMSO2 nanofibers were successfully used for CDI with excellent desalination performance.

Sorghum biomass-derived porous carbon electrodes for capacitive deionization and energy storage

2021 ◽  
Vol 312 ◽  
pp. 110757
Author(s):  
Minjun Kim ◽  
Hyunsoo Lim ◽  
Xingtao Xu ◽  
Md Shahriar A. Hossain ◽  
Jongbeom Na ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Carbon Electrodes ◽  
Capacitive Deionization ◽  
Porous Carbon Electrodes

scholarly journals PhotoATRP Induced Self-Assembly (PhotoATR-PISA) Enables Simplified Synthesis of Responsive Polymer Nanoparticles in One-Pot

2020 ◽  
Author(s):  
Ali Shahrokhinia ◽  
Randall Scanga ◽  
Priyanka Biswas ◽  
James Reuther
Keyword(s):  
Self Assembly ◽  
Glycidyl Methacrylate ◽  
Uv Light ◽  
Copper Catalyst ◽  
Crosslinking Agent ◽  
Polymer Nanoparticles ◽  
One Pot ◽  
Responsive Polymer ◽  
Catalyst Systems ◽  
First Time

<p><b>ABSTRACT:</b> Photo-controlled atom transfer radical polymerization (PhotoATRP) was implemented, for the first time, to accomplish polymerization induced self-assembly (PISA) mediated by UV light (λ = 365 nm) using ppm levels (ca. < 20 ppm) of copper catalyst at ambient temperature. Using Cu<sup>II</sup>Br<sub>2</sub>/tris(pyridin-2-ylmethyl)amine (TPMA) catalyst systems, PISA was per-formed all in one-pot starting from synthesis of solvophilic poly(oligo(ethylene oxide) methyl ether methacrylate) (POEGMA) blocks to core-crosslinked nanoparticles (NPs) utilizing poly(glycidyl methacrylate) (PGMA) and N,N-cystamine bismethacrylamide (CBMA) as the solvophobic copolymer and crosslinking agent, respectively. Sequential chain-extensions were performed for PGMA demonstrating capabilities for accessing multi-block copolymers with temporal control via switching the UV light on and off. Further, core-crosslinking of PISA nanoparticles was performed via the slow incorporation of the CBMA enabling one-pot crosslinking during the PISA process. Finally, the disulfide installed in the CBMA core-crosslinks allowed for the stimuli-triggered dissociation of nanoparticles using DL-dithiothreitol at acidic pH.</p>

scholarly journals Three-dimensional honeycomb-like porous carbon derived from corncob for the removal of heavy metals from water by capacitive deionization

RSC Advances ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 1159-1167 ◽  
Author(s):  
X. F. Zhang ◽  
B. Wang ◽  
J. Yu ◽  
X. N. Wu ◽  
Y. H. Zang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Removal Efficiency ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Removal Of Heavy Metals ◽  
Porous Carbon Electrode

A porous carbon electrode with a 3D honeycomb-like structure demonstrates a high removal efficiency for the removal of chromium(vi) from water.

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