scholarly journals Enhanced capacitive deionization performance by an rGO–SnO2 nanocomposite modified carbon felt electrode

RSC Advances ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 4182-4190 ◽  
Author(s):  
Syed Kamran Sami ◽  
Jung Yong Seo ◽  
Suh-Eun Hyeon ◽  
Md. Selim Arif Shershah ◽  
Pil-Jin Yoo ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Capacitive Deionization ◽  
Carbon Felt ◽  
Nano Composite ◽  
Carbon Felt Electrode

The rGO–SnO2 nano-composite with a significantly high-surface-area, greatly improves the electrosorption capacity and is proposed as a novel electrode for capacitive deionization applications.

Water Treatment: Sponge-Templated Preparation of High Surface Area Graphene with Ultrahigh Capacitive Deionization Performance (Adv. Funct. Mater. 25/2014)

2014 ◽  
Vol 24 (25) ◽  
pp. 3838-3838 ◽  
Author(s):  
Zhi-Yu Yang ◽  
Lin-Jian Jin ◽  
Guo-Qian Lu ◽  
Qing-Qing Xiao ◽  
Yu-Xia Zhang ◽  
...  
Keyword(s):  
Water Treatment ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Capacitive Deionization

Response to Comment onSponge-Templated Preparation of High Surface Area Graphene with Ultrahigh Capacitive Deionization Performance

2014 ◽  
Vol 25 (2) ◽  
pp. 182-183 ◽  
Author(s):  
Zhi-Yu Yang ◽  
Lin-Jian Jin ◽  
Guo-Qian Lu ◽  
Qing-Qing Xiao ◽  
Yu-Xia Zhang ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Capacitive Deionization

scholarly journals Preparation and Application of Bismuth/MXene Nano-Composite as Electrochemical Sensor for Heavy Metal Ions Detection

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 866 ◽  
Author(s):  
Ying He ◽  
Li Ma ◽  
Liya Zhou ◽  
Guanhua Liu ◽  
Yanjun Jiang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Surface Area ◽  
Heavy Metal Ions ◽  
High Surface ◽  
High Surface Area ◽  
Effective Surface ◽  
Nano Composite ◽  
Environmental Friendliness ◽  
Metal Ions Detection

A nano-form composite of MXenes (Ti3C2Tx, Tx = -O, -OH, -F) was synthesized through depositing bismuth-nanoparticle (BiNPs) onto Ti3C2Tx sheets. Because of the preventive effect of the two-dimensional layered structure of Ti3C2Tx, the nanoparticles of Bi were uniform and well attached on the Ti3C2Tx. The obtained BiNPs/Ti3C2Tx nano-composite was applied for sensors construction of electrochemical detecting of Pb2+ and Cd2+ heavy metal ions. The produced BiNPs@Ti3C2Tx-based sensor showed high effective surface area and excellent conductivity. Also, the BiNPs were efficient for anodic-stripping voltammetric to detect heavy metal ions. After conditions optimization, the BiNPs@Ti3C2Tx nano-sensor could detect Pb2+ and Cd2+ simultaneously and the detection limits were 10.8 nM for Pb2+ and 12.4 nM for Cd2+. The BiNPs@Ti3C2Tx was promising for detecting heavy metal ions due to their high surface area, fast electron-transfer ability, environmental friendliness, and facial preparation.

scholarly journals Enhanced Desalination Performance of Capacitive Deionization Using Nanoporous Carbon Derived from ZIF-67 Metal Organic Frameworks and CNTs

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2091
Author(s):  
Ngo Minh Phuoc ◽  
Euiyeon Jung ◽  
Nguyen Anh Thu Tran ◽  
Young-Woo Lee ◽  
Chung-Yul Yoo ◽  
...  
Keyword(s):  
Surface Area ◽  
Electrochemical Impedance ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
High Surface Area ◽  
Metal Center ◽  
Carbon Cloth ◽  
Capacitive Deionization ◽  
Metal Organic ◽  
Carbon Based

Capacitive deionization (CDI) based on ion electrosorption has recently emerged as a promising desalination technology due to its low energy consumption and environmental friendliness compared to conventional purification technologies. Carbon-based materials, including activated carbon (AC), carbon aerogel, carbon cloth, and carbon fiber, have been mostly used in CDI electrodes due their high surface area, electrochemical stability, and abundance. However, the low electrical conductivity and non-regular pore shape and size distribution of carbon-based electrodes limits the maximization of the salt removal performance of a CDI desalination system using such electrodes. Metal-organic frameworks (MOFs) are novel porous materials with periodic three-dimensional structures consisting of metal center and organic ligands. MOFs have received substantial attention due to their high surface area, adjustable pore size, periodical unsaturated pores of metal center, and high thermal and chemical stabilities. In this study, we have synthesized ZIF-67 using CNTs as a substrate to fully utilize the unique advantages of both MOF and nanocarbon materials. Such synthesis of ZIF-67 carbon nanostructures was confirmed by TEM, SEM, and XRD. The results showed that the 3D-connected ZIF-67 nanostructures bridging by CNTs were successfully prepared. We applied this nanostructured ZIF-67@CNT to CDI electrodes for desalination. We found that the salt removal performance was significantly enhanced by 88% for 30% ZIF-67@CNTs-included electrodes as compared with pristine AC electrodes. This increase in salt removal behavior was analyzed by electrochemical analysis such as cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements, and the results indicate reduced electrical impedance and enhanced electrode capacitance in the presence of ZIF-67@CNTs.

Nitrogen-doped porous carbons with high surface area for capacitive deionization

2020 ◽  
Vol 104 ◽  
pp. 107758
Author(s):  
Zhuyin Sui ◽  
Wei Liu ◽  
Xiufeng Xu ◽  
Yi Liu ◽  
Qinghua Tian
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Capacitive Deionization ◽  
Porous Carbons ◽  
Nitrogen Doped

Sponge-Templated Preparation of High Surface Area Graphene with Ultrahigh Capacitive Deionization Performance

2014 ◽  
Vol 24 (25) ◽  
pp. 3917-3925 ◽  
Author(s):  
Zhi-Yu Yang ◽  
Lin-Jian Jin ◽  
Guo-Qian Lu ◽  
Qing-Qing Xiao ◽  
Yu-Xia Zhang ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Capacitive Deionization

Tenacious Mass Transfer Limitations Drive Catalytic Selectivity during Electrochemical Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kailun Yang ◽  
Recep Kas ◽  
Wilson A. Smith
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Layer ◽  
Active Surface ◽  
Active Surface Area ◽  
High Concentration ◽  
Copper Electrodes ◽  
Surface Enhanced ◽  
Local Current

<p>This study evaluated the performance of the commonly used strong buffer electrolytes, i.e. phosphate buffers, during CO<sub>2</sub> electroreduction in neutral pH conditions by using in-situ surface enhanced infrared absorption spectroscopy (SEIRAS). Unfortunately, the buffers break down a lot faster than anticipated which has serious implications on many studies in the literature such as selectivity and kinetic analysis of the electrocatalysts. Increasing electrolyte concentration, surprisingly, did not extend the potential window of the phosphate buffers due to dramatic increase in hydrogen evolution reaction. Even high concentration phosphate buffers (1 M) break down within the potentials (-1 V vs RHE) where hydrocarbons are formed on copper electrodes. We have extended the discussion to high surface area electrodes by evaluating electrodes composed of copper nanowires. We would like highlight that it is not possible to cope with high local current densities on these high surface area electrodes by using high buffer capacity solutions and the CO<sub>2</sub> electrocatalysts are needed to be evaluated by casting thin nanoparticle films onto inert substrates as commonly employed in fuel cell reactions and up to now scarcely employed in CO<sub>2</sub> electroreduction. In addition, we underscore that normalization of the electrocatalytic activity to the electrochemical active surface area is not the ultimate solution due to concentration gradient along the catalyst layer.This will “underestimate” the activity of high surface electrocatalyst and the degree of underestimation will depend on the thickness, porosity and morphology of the catalyst layer. </p> <p> </p>

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