Ag-nanogel blended polymeric membranes with antifouling, hemocompatible and bactericidal capabilities

2015 ◽  
Vol 3 (48) ◽  
pp. 9295-9304 ◽  
Author(s):  
Yi Xia ◽  
Chong Cheng ◽  
Rui Wang ◽  
Chuanxiong Nie ◽  
Jie Deng ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Polymeric Membranes ◽  
Highly Efficient

A highly efficient, universal and convenient protocol is reported to fabricate antifouling, hemocompatible, and bactericidal membranes by physically blending of antifouling nanogels and in situ silver nanoparticles immobilization.

In situ polydopamine-assisted deposition of silver nanoparticles on a two dimensional support as an inexpensive and highly efficient SERS substrate

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36368-36373 ◽  
Author(s):  
Peilan Wang ◽  
Yanling Zhou ◽  
Ying Wen ◽  
Feng Wang ◽  
Haifeng Yang
Keyword(s):  
Silver Nanoparticles ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Highly Efficient

Versatile substrates were modified with polydopamine followed by in situ AgNP deposition to fabricate a cheap, flexible and disposable SERS substrate.

scholarly journals Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes

Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 205
Author(s):  
Juan Zhang ◽  
Guang Wang ◽  
Jianhua Zhang ◽  
Zhiguang Xu ◽  
Yan Zhao ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Membrane Surface ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Energy Costs ◽  
Membrane Process ◽  
Permeate Flux ◽  
Membrane Surfaces ◽  
Substrate Independent

Biofouling is a common but significant issue in the membrane process as it reduces permeate flux, increases energy costs, and shortens the life span of membranes. As an effective antibacterial agent, a small amount of silver nanoparticles (AgNPs) immobilized on membrane surfaces will alleviate the membrane from biofouling. However, loading AgNPs on the membrane surface remains a challenge due to the low loading efficiency or the lack of bonding stability between AgNPs and the membrane surface. In this study, a substrate-independent method is reported to immobilize silver nanoparticles on polymeric membrane surfaces by firstly modifying the membrane surface with functional groups and then forming silver nanoparticles in situ. The obtained membranes had good anti-biofouling properties as demonstrated from disk diffusion and anti-biofouling tests. The silver nanoparticles were stably immobilized on the membrane surfaces and easily regenerated. This method is applicable to various polymeric micro-, ultra-, nano-filtration and reverse osmosis (RO) membranes.

Surfactant-Free In Situ Synthesis of Sub-5 nm Silver Nanoparticles Embedded Silica Sub-Microspheres as Highly Efficient and Recyclable Catalysts

2018 ◽  
Vol 3 (37) ◽  
pp. 10352-10356 ◽  
Author(s):  
Qihui Shen ◽  
Hanliang Gao ◽  
Peng Xue ◽  
Yang Lü ◽  
Dongmei Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
In Situ Synthesis ◽  
Highly Efficient ◽  
Recyclable Catalysts

Catalytic asymmetric hydrogenation reaction by in situ formed ultra-fine metal nanoparticles in live thermophilic hydrogen-producing bacteria

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Bing ◽  
Faming Wang ◽  
Yuhuan Sun ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Hydrogenation ◽  
Asymmetric Hydrogenation ◽  
Environmentally Friendly ◽  
Hydrogenation Reaction ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Live Bacteria ◽  
Catalytic Asymmetric Hydrogenation

An environmentally friendly biomimetic strategy has been presented and validated for the catalytic hydrogenation reaction in live bacteria. In situ formed ultra-fine metal nanoparticles can realize highly efficient asymmetric hydrogenation reactions.

scholarly journals Influence of Casting Solvents on CO2/CH4 Separation Using Polysulfone Membranes

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 286
Author(s):  
Roba M. Almuhtaseb ◽  
Ahmed Awadallah-F ◽  
Shaheen A. Al-Muhtaseb ◽  
Majeda Khraisheh
Keyword(s):  
High Efficiency ◽  
In Situ Synthesis ◽  
Separation Process ◽  
Polymeric Membranes ◽  
Gas Mixture ◽  
Manufacturing Cost ◽  
Binary Gas Mixture ◽  
Maximum Permeability ◽  
Polysulfone Membranes

Polysulfone membranes exhibit resistance to high temperature with low manufacturing cost and high efficiency in the separation process. The composition of gases is an important step that estimates the efficiency of separation in membranes. As membrane types are currently becoming in demand for CO2/CH4 segregation, polysulfone will be an advantageous alternative to have in further studies. Therefore, research is undertaken in this study to evaluate two solvents: chloroform (CF) and tetrahydrofuran (THF). These solvents are tested for casting polymeric membranes from polysulfone (PSF) to separate every single component from a binary gas mixture of CO2/CH4. In addition, the effect of gas pressure was conducted from 1 to 10 bar on the behavior of the permeability and selectivity. The results refer to the fact that the maximum permeability of CO2 and CH4 for THF is 62.32 and 2.06 barrer at 1 and 2 bars, respectively. Further, the maximum permeability of CF is 57.59 and 2.12 barrer at 1 and 2 bars, respectively. The outcome selectivity values are 48 and 36 for THF and CF at 1 bar, accordingly. Furthermore, the study declares that with the increase in pressure, the permeability and selectivity values drop for CF and THF. The performance for polysulfone (PSF) membrane that is manufactured with THF is superior to that of CF relative to the Robeson upper bound. Therefore, through the results, it can be deduced that the solvent during in-situ synthesis has a significant influence on the gas separation of a binary mixture of CO2/CH4.

MOF-derived M-OOH with rich oxygen defects by in-situ electro-oxidation reconstitution for highly efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Zhikai Shi ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jun Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Energy Production ◽  
Low Cost ◽  
Highly Efficient ◽  
Oxygen Defects ◽  
Electro Oxidation

The oxygen evolution reaction (OER) is an important half-reaction in the field of energy production. However, how effectively, simply, and greenly to prepare low-cost OER electrocatalysts remains a problem. Herein,...

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