scholarly journals A Cross-Linker-Based Poly(Ionic Liquid) for Sensitive Electrochemical Detection of 4-Nonylphenol

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 513 ◽  
Author(s):  
Jian Hu ◽  
Hao Dai ◽  
Yanbo Zeng ◽  
Yiwen Yang ◽  
Hailong Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Environmental Water ◽  
Charge Transfer Resistance ◽  
Current Response ◽  
Transfer Resistance ◽  
Peak Current ◽  
Lower Charge ◽  
One Step ◽  
Cross Linker ◽  
Poly Ionic Liquid

In this study, we report a cross-linker-based poly(ionic liquid) (PIL) for the sensitive detection of 4-nonylphenol (4-NP). PIL was poly(1,4-butanediyl-3,3′-bis-l-vinylimidazolium dibromide) (poly([V2C4(mim)2]Br2)). Poly([V2C4(mim)2]Br2) was prepared via one-step free-radical polymerization. The poly([V2C4(mim)2]Br2) was characterized by infrared spectroscopy, Raman spectroscopy, thermal gravimetric analyzer and scanning electron microscope. The poly([V2C4(mim)2]Br2) was then drop-cast onto a glassy carbon electrode (GCE) to obtain poly([V2C4(mim)2]Br2)/GCE. In comparison with a bare GCE, poly([V2C4(mim)2]Br2)/GCE exhibited higher peak current responses for [Fe(CN)6]3−/4−, lower charge transfer resistance, and larger effective surface area. While comparing the peak current responses, we found the peak current response for 4-NP using poly([V2C4(mim)2]Br2)/GCE to be 3.6 times higher than a traditional cross-linker ethylene glycol dimethacrylate (EGDMA) based poly(EGDMA) modified GCE. The peak current of poly([V2C4(mim)2]Br2) sensor was linear to 4-NP concentration from 0.05 to 5 μM. The detection limit of 4-NP was obtained as 0.01 μM (S/N = 3). The new PIL based electrochemical sensor also exhibited excellent selectivity, stability, and reusability. Furthermore, the poly([V2C4(mim)2]Br2)/GCE demonstrated good 4-NP detection in environmental water samples.

Hydrothermal synthesis MoO3@CoMoO4 hybrid as an anode material for high performance lithium rechargeable batteries

2019 ◽  
Vol 12 (01) ◽  
pp. 1850104 ◽  
Author(s):  
Jinggao Wu ◽  
Qi Lai ◽  
Canyu Zhong
Keyword(s):  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Rate Capability ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Rechargeable Batteries ◽  
Transfer Resistance ◽  
Lithium Rechargeable Batteries ◽  
One Step

MoO3@CoMoO4 hybrid is fabricated by a facile one-step hydrothermal method and is used as anode for lithium-ion battery (LIB). Compared to pristine MoO3, galvanostatic charge–discharge tests show that the hybrid electrode delivered a remarkable rate capability of 586.69[Formula: see text]mAh[Formula: see text]g[Formula: see text] at the high current density of 1000[Formula: see text]mA[Formula: see text]g[Formula: see text] and a greatly enhanced cyclic capacity of 887.36[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] after 140 cycles at the current density of 200[Formula: see text]mA[Formula: see text]g[Formula: see text] (with capacity retention, 85.3%). The superior electrochemical properties could be ascribed to the synergistic effect of MoO3 and CoO nanostructure that results in the lower charge transfer resistance and the higher Li[Formula: see text] diffusion coefficient, thus leading to high performance Li[Formula: see text] reversibility storage.

Pulse Polymerized Poly(3,4-ethylenedioxythiophene) Electrodes For Solid-State Supercapacitors with Ionic Liquid Gel Polymer Electrolyte

2012 ◽  
Vol 1448 ◽  
Author(s):  
G. P. Pandey ◽  
A. C. Rastogi
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Polymer Electrolyte ◽  
Photoelectron Spectroscopy ◽  
Gel Polymer Electrolyte ◽  
Charge Transfer Resistance ◽  
Polymer Chains ◽  
Transfer Resistance ◽  
Spectroscopy Studies ◽  
Highly Porous

ABSTRACTPoly(3,4-ethylenedioxythiophene) (PEDOT) electrodes are prepared by a novel ultrashort galvanic pulse electropolymerization technique for application in solid-state supercapacitors. Microstructure studies using scanning electron microscopy (SEM) show that PEDOT electrodes deposited by pulse polymerization are highly porous as compared to the conventional potentiostatic polymerization. In addition, as revealed by the X-ray photoelectron spectroscopy (XPS) studies in the PEDOT films formed by pulse polymerization, the polymer chains are fully conjugated with the dopant ClO4- ions. Solid-state supercapacitor cells using pulse polymerized PEDOT electrodes and ionic liquid gel polymer electrolyte were fabricated and characterized. The impedance spectroscopy studies show that the pulse polymerized PEDOT electrode have specific capacitance value of ∼ 65 F g-1 as compared to ∼52 F g-1for potentiostatically polymerized PEDOT and significantly lower interfacial and charge transfer resistance. Cyclic voltammetry (CV) and galvanostatic charge-discharge characterization show highly capacitive behavior of the supercapacitor cells in the solid-state configuration.

Novel redox-responsive nanogels based on poly(ionic liquid)s for the triggered loading and release of cargos

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 3013-3019 ◽  
Author(s):  
Congcong Miao ◽  
Feng Li ◽  
Yong Zuo ◽  
Rongmin Wang ◽  
Yubing Xiong
Keyword(s):  
Ionic Liquid ◽  
Redox Responsive ◽  
One Step ◽  
Poly Ionic Liquid

A redox-responsive nanogel matrix was fabricated by one-step synthesis for the controlled loading and release of cargos.

scholarly journals Optimum dose of Chaetoceros for controlling methanogenesis to improve power production of microbial fuel cell

2021 ◽  
Author(s):  
P. P. Rajesh ◽  
P. Christine ◽  
M. M. Ghangrekar
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Marine Algae ◽  
Coulombic Efficiency ◽  
Charge Transfer Resistance ◽  
Optimum Dose ◽  
Anaerobic Sludge ◽  
Power Performance ◽  
Transfer Resistance ◽  
Lower Charge

Abstract The marine algae Chaetoceros contains hexadecatrienoic acid, which suppresses methanogen development and improves the coulombic efficiency (CE) of microbial fuel cell (MFC). To inhibit the methanogens, optimum concentration of marine algae should be added to the anaerobic sludge to enhance the performance of microbial fuel cell. A varying concentration of Chaetoceros ranging from 1 to 20 mg/mL was carried out for pretreatment of anaerobic mix-consortium to suppress methanogens. MFC inoculated with pretreated anaerobic sludge with 10 mg/mL Chaetoceros showed a maximum power density of 21.62 W/m3 and a maximum CE of 37.25%, which was considerably higher than the treatment with other concentrations. At 10 mg/mL concentration, Tafel analysis of anode in MFC showed a higher exchange current density of 66.35 mA/m2 and a lower charge transfer resistance of 0.97 Ω.m2, revealing higher bio-electrochemical activity. The performance of MFC improved when the concentration of Chaetoceros was increased up to 10 mg/mL, but then began to decline as the concentration increased further. Thus, the optimum dose of Chaetoceros to be added in the mix-anaerobic consortiumto optimize the power performance of MFC is determined, which can be carried out in scaled-up MFCs.

γ-CuI from Ionic Liquids/Poly(Ionic liquid)s Precursor with Controllable Morphologies and Improved Photocatalytic Performance

2021 ◽  
Author(s):  
Su-Yun Zhang ◽  
Fangchao Long ◽  
Chenxu Kang ◽  
Zhengyuan Jin ◽  
Ailun Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Redox Process ◽  
One Step ◽  
Poly Ionic Liquid

γ-phase copper(I) iodide (abbreviated to CuI hereafter) with different morphologies is realized through one-step redox process from I-containing ionic liquid (IL) or poly(ionic liquid)s (PILs) precursors at room temperature. The...

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