A facile strategy for high performance recyclable polymer systems via dynamic metal ion crosslinking

2019 ◽  
Vol 7 (8) ◽  
pp. 3577-3582 ◽  
Author(s):  
Yanjun Wang ◽  
Zhimeng Liu ◽  
Changlin Zhou ◽  
Ye Yuan ◽  
Liang Jiang ◽  
...  
Keyword(s):  
Metal Ion ◽  
High Performance ◽  
Synthesis Process ◽  
Reactive Processing ◽  
Polymer Systems

Incorporation of pendant carboxyl during the synthesis process and reactive processing can be adopted to prepare high performance recyclable polymer systems.

Recent Advances of Metal Phosphates-based Electrodes for High-Performance Metal Ion Batteries

2021 ◽  
Author(s):  
Qihui Cheng ◽  
Xun Zhao ◽  
Guiyuan Yang ◽  
Lei Mao ◽  
Fangfang Liao ◽  
...  
Keyword(s):  
Metal Ion ◽  
High Performance ◽  
Metal Phosphates ◽  
Recent Advances

Ultrahigh energy storage and ultrafast ion diffusion in borophene-based anodes for rechargeable metal ion batteries

2017 ◽  
Vol 5 (5) ◽  
pp. 2328-2338 ◽  
Author(s):  
Dewei Rao ◽  
Lingyan Zhang ◽  
Zhaoshun Meng ◽  
Xirui Zhang ◽  
Yunhui Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Metal Ion ◽  
High Performance ◽  
Storage Systems ◽  
Ultrahigh Energy ◽  
Ion Diffusion ◽  
Energy Storage Systems ◽  
Increasing Demand

Since the turn of the new century, the increasing demand for high-performance energy storage systems has generated considerable interest in rechargeable ion batteries.

Kinetic model for calcium sulfate α-hemihydrate produced hydrothermally from gypsum formed by flue gas desulfurization

2015 ◽  
Vol 48 (3) ◽  
pp. 827-835 ◽  
Author(s):  
Mingliang Tang ◽  
Xuerun Li ◽  
Yusheng Shen ◽  
Xiaodong Shen
Keyword(s):  
Flue Gas ◽  
Calcium Sulfate ◽  
High Performance ◽  
Transformation Process ◽  
Flue Gas Desulfurization ◽  
Synthesis Process ◽  
Stable Phase ◽  
Hydrothermal Conditions ◽  
Simple Method ◽  
Kinetics Of

Modeling of the kinetics of the synthesis process for calcium sulfate α-hemihydrate from gypsum formed by flue gas desulfurization (FGD) is important to produce high-performance products with minimal costs and production cycles under hydrothermal conditions. In this study, a model was established by horizontally translating the obtained crystal size distribution (CSD) to the CSD of the stable phase during the transformation process. A simple method was used to obtain the nucleation and growth rates. A nonlinear optimization algorithm method was employed to determine the kinetic parameters. The model can be successfully used to analyze the transformation kinetics of FGD gypsum to α-hemihydrate in an isothermal batch crystallizer. The results showed that the transformation temperature and stirring speed exhibit a significant influence on the crystal growth and nucleation rates of α-hemihydrate, thus altering the transformation time and CSD of the final products. The characteristics obtained by the proposed model can potentially be used in the production of α-hemihydrate.

scholarly journals Nanocelllulose Based Adsorbents for Heavy Metal Ions Removal

2021 ◽  
Author(s):  
Rongrong Si ◽  
Daiqi Wang ◽  
Yehong Chen ◽  
Dongmei Yu ◽  
Qijun Ding ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
High Performance ◽  
Advanced Technologies ◽  
Good Biocompatibility ◽  
Heavy Metal Ions Removal ◽  
Metal Ions Removal

Abstract Heavy metal ion pollutions are of serious threat for our human health, and advanced technologies on removal of heavy metal ions in water or soil are in the focus of intensive research worldwide. Nanocellulose based adsorbents are emerging as an environmentally friendly appealing materials platform for heavy metal ions removal as nanocellulose has higher specific surface area, excellent mechanical properties and good biocompatibility. In this review, we briefly compare the differences of three kinds of nanocellulose and their preparation method. Then we cover the most recent work on nanocellulose based adsorbents for heavy metal ions removal, and present an in-depth discussion of the modification technologies for nanocellulose in assembling high performance heavy ions adsorbent process. By introducing functional groups, such as amino, carboxyl, phenolic hydroxyl, and thiol, the nanocellulose based adsorbents not only remove single heavy metal ions through ion exchange, chelation/complexation/coordination, electrostatic attraction, hydrophobic actions, binding affinity and redox reactions, but also can selectively adsorb multiple heavy ions in water. Finally, some challenges of nanocellulose based adsorbents for heavy metal ions are also prospected. We anticipate that the review supplies some guides for nanocellulose based adsorbents applied in heavy metal ions removal field.

Studies on the biofilm produced by Pseudomonas aeruginosa grown in different metal fatty acid salt media and its application in biodegradation of fatty acids and bioremediation of heavy metal ions

2017 ◽  
Vol 63 (1) ◽  
pp. 61-73 ◽  
Author(s):  
P. Abinaya Sindu ◽  
Pennathur Gautam
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Fatty Acid ◽  
Metal Ions ◽  
Metal Ion ◽  
High Performance ◽  
Toxic Metal ◽  
Industrial Effluents ◽  
Aquatic Organism ◽  
Fatty Acid Salt ◽  
Planktonic Form

Metal fatty acid salts (MFAS) in untreated industrial effluents cause environmental pollution. The use of biocompatible agents for remediation may help in reducing the harm caused to the ambient aquatic organism. Pseudomonas aeruginosa is a ubiquitous organism that thrives under harsh conditions and is resistant to toxic metal ions. The present study shows a proof-of-concept of using this organism in the biodegradation of MFAS. MFAS were prepared and we studied their effect on the growth of the planktonic form and the formation of biofilm by P. aeruginosa. We observed biofilm formation in the presence of all the MFAS when used as the sole carbon source, albeit the quantity of biofilm formed in the presence of cadmium and copper was less. There was no effect on the planktonic form of the organism but the formation of biofilm increased in the presence of magnesium palmitate. This study shows that metal ions play a pivotal role in the formation of biofilm. HPLC (high-performance liquid chromatography) analysis of the biofilm polysaccharide showed that hexose sugar was a major component when compared with pentose sugar. The structure of biofilm polysaccharide and the coordination of the metal ion with the biofilm polysaccharide were confirmed by FTIR (Fourier transform infrared spectroscopy) and Raman spectroscopy.

Dirac nodal surface semimetallic carbon based structure as a universal anode material for metal-ion batteries with high performance

2021 ◽  
Author(s):  
Shouren Zhang ◽  
Huili Liu ◽  
Yadan Zhang ◽  
Shuaiwei Wang ◽  
Baocheng Yang
Keyword(s):  
Anode Material ◽  
High Power ◽  
Metal Ion ◽  
High Performance ◽  
Rapid Development ◽  
Electronic Devices ◽  
Storage Battery ◽  
Nodal Surface ◽  
Power Storage ◽  
Carbon Based

The rapid development of electronic devices require the high power storage battery. However, the reported 3D carbon based materials are semiconductor or metal and used for Li- or Na-ion battery...

scholarly journals The Marine Catenovulum agarivorans MNH15 and Dextranase: Removing Dental Plaque

Marine Drugs ◽  
2019 ◽  
Vol 17 (10) ◽  
pp. 592 ◽  
Author(s):  
Lai ◽  
Liu ◽  
Liu ◽  
Deng ◽  
Feng ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Performance Liquid Chromatography ◽  
Dental Plaque ◽  
Metal Ion ◽  
High Performance ◽  
Opposite Effect ◽  
Nacl Concentration ◽  
Initial Ph ◽  
Application Potential ◽  
High Application

Dextranase, a hydrolase that specifically hydrolyzes α-1,6-glucosidic bonds, has been used in the pharmaceutical, food, and biotechnology industries. In this study, the strain of Catenovulum agarivorans MNH15 was screened from marine samples. When the temperature, initial pH, NaCl concentration, and inducer concentration were 30 °C, 8.0, 5 g/L, and 8 g/L, respectively, it yielded more dextranase. The molecular weight of the dextranase was approximately 110 kDa. The maximum enzyme activity was achieved at 40 °C and a pH of 8.0. The enzyme was stable at 30 °C and a pH of 5–9. The metal ion Sr2+ enhanced its activity, whereas NH4+, Co2+, Cu2+, and Li+ had the opposite effect. The dextranase effectively inhibited the formation of biofilm by Streptococcus mutans. Moreover, sodium fluoride, xylitol, and sodium benzoate, all used in dental care products, had no significant effect on dextranase activity. In addition, high-performance liquid chromatography (HPLC) showed that dextran was mainly hydrolyzed to glucose, maltose, and maltoheptaose. The results indicated that dextranase has high application potential in dental products such as toothpaste and mouthwash.

scholarly journals Synthesis and characterization of a high performance polycarboxylic acid water reducing agent

2020 ◽  
Vol 198 ◽  
pp. 01018
Author(s):  
Qiong Yan ◽  
Liangke Yao ◽  
Yongzhong Xia ◽  
Shishan Liu ◽  
Lingcong Chen
Keyword(s):  
High Performance ◽  
Chain Transfer ◽  
Reducing Agent ◽  
Acid Water ◽  
Synthesis Process ◽  
Process Conditions ◽  
Polycarboxylic Acid ◽  
Synthetic Process ◽  
Working Performance

The optimal synthesis process conditions of polycarboxylic acid water reducers were investigated and characterized by infrared spectroscopy as well as GPC using high performance polycarboxylic acid water reducers synthesized by isoproterenol polyoxyethylene ether polymerized with acrylic acid and introducing unsaturated monomeric dibasic ester. The results showed that the optimum synthetic process conditions were as follows: acid-ether ratio of 3.0:1, amount of binary ester as 2.8% of monomer mass, amount of initiator as 0.35% of monomer mass, amount of chain transfer agent as 0.35% of monomer mass; the initial slump and initial expansion of the concrete of the synthetic water-reducing agent PCE-H were greater than those of the commercially available polycarboxylic acid water-reducing agent PCE-W, and the working performance of the concrete was better. PCE-H also has no adverse effect on strength.

scholarly journals Architectured ZnO–Cu particles for facile manufacturing of integrated Li-ion electrodes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Fabio L. Bargardi ◽  
Juliette Billaud ◽  
Claire Villevieille ◽  
Florian Bouville ◽  
André R. Studart
Keyword(s):  
Metal Ion ◽  
High Performance ◽  
Mechanical Stability ◽  
Active Material ◽  
Processing Route ◽  
Zno Films ◽  
Charge Capacity ◽  
Zno Powders ◽  
Polymeric Binders ◽  
Li Ion

Abstract Designing electrodes with tailored architecture is an efficient mean to enhance the performance of metal-ion batteries by minimizing electronic and ionic transport limitations and increasing the fraction of active material in the electrode. However, the fabrication of architectured electrodes often involves multiple laborious steps that are not directly scalable to current manufacturing platforms. Here, we propose a processing route in which Cu-coated ZnO powders are directly shaped into architectured electrodes using a simple uniaxial pressing step. Uniaxial pressing leads to a percolating Cu phase with enhanced electrical conductivity between the active ZnO particles and improved mechanical stability, thus dispensing the use of carbon-based additives and polymeric binders in the electrode composition. The additive-free percolating copper network obtained upon pressing leads to highly loaded integrated anodes displaying volumetric charge capacity 6–10 fold higher than Cu-free ZnO films and that matches the electrochemical performance reported for advanced cathode structures. Achieving this high charge capacity using a readily available pressing tool makes this approach a promising route for the facile manufacturing of high-performance electrodes at large industrial scales.

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