In Situ Doping of Metal Nanoparticles into Medical Polymer Membranes and Their Biomedical Application

2020 ◽  
Vol 5 (18) ◽  
pp. 5451-5459 ◽  
Author(s):  
Xiaoyun Li ◽  
Qi Wang ◽  
Yueqi Yu ◽  
Leyi Fang ◽  
Xingwen Wang ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Biomedical Application ◽  
Polymer Membranes ◽  
Medical Polymer

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.

Microchip Dialysis of Proteins Using in Situ Photopatterned Nanoporous Polymer Membranes

2004 ◽  
Vol 76 (8) ◽  
pp. 2367-2373 ◽  
Author(s):  
Simon Song ◽  
Anup K. Singh ◽  
Timothy J. Shepodd ◽  
Brian J. Kirby
Keyword(s):  
Polymer Membranes

In-situ formed Co from Co-Mg-O solid solution synergizing with LiH for efficient ammonia synthesis

2021 ◽  
Author(s):  
Wenbo Gao ◽  
Sheng Feng ◽  
Hanxue Yan ◽  
Qianru Wang ◽  
Hua Xie ◽  
...  
Keyword(s):  
Solid Solution ◽  
Metal Nanoparticles ◽  
Magnesium Oxide ◽  
Ammonia Synthesis ◽  
Oxide Solid Solution ◽  
In Situ Formation

A cobalt magnesium oxide solid solution (Co-Mg-O) supported LiH catalyst has been synthesized, in which LiH functions both as a strong reductant for in-situ formation of Co metal nanoparticles and...

Copper foam in situ loaded with precious metal nanoparticles as transmission SEIRAS substrate for rapid detection of dithiocarbamate pesticides

2020 ◽  
Vol 12 (28) ◽  
pp. 3600-3607
Author(s):  
Xincheng Jiang ◽  
Wen Liu ◽  
Bin Luo ◽  
Xuke Liu ◽  
Yuting Huang ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Rapid Detection ◽  
Precious Metal ◽  
Copper Foam

Copper foam in situ loaded with precious metal nanoparticles as transmission SEIRAS substrate.

A facile approach to fabricate halloysite/metal nanocomposites with preformed and in situ synthesized metal nanoparticles: a comparative study of their enhanced catalytic activity

2015 ◽  
Vol 44 (19) ◽  
pp. 8906-8916 ◽  
Author(s):  
Sankar Das ◽  
Subhra Jana
Keyword(s):  
Catalytic Activity ◽  
Comparative Study ◽  
Metal Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Cost Effective ◽  
Environmentally Benign ◽  
Metal Nanocomposites

Halloysite/metal nanocomposites have been synthesized through the immobilization of preformed and in situ synthesized metal nanoparticles over halloysite surfaces, which in turn produce efficient, cost-effective, and environmentally benign heterogeneous catalysts.

scholarly journals Injectable and Gellable Chitosan Formulations Filled with Cellulose Nanofibers for Intervertebral Disc Tissue Engineering

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1202 ◽  
Author(s):  
Ingo Doench ◽  
Maria Torres-Ramos ◽  
Alexandra Montembault ◽  
Paula Nunes de Oliveira ◽  
Celia Halimi ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Rheological Behavior ◽  
Biomedical Application ◽  
Flow Behavior ◽  
Cellulose Nanofibers ◽  
Nanofibrillated Cellulose ◽  
The Body ◽  
Mechanical Reinforcement ◽  
Invasive Approach

The development of non-cellularized injectable suspensions of viscous chitosan (CHI) solutions (1.7–3.3% (w/w)), filled with cellulose nanofibers (CNF) (0.02–0.6% (w/w)) of the type nanofibrillated cellulose, was proposed for viscosupplementation of the intervertebral disc nucleus pulposus tissue. The achievement of CNF/CHI formulations which can gel in situ at the disc injection site constitutes a minimally-invasive approach to restore damaged/degenerated discs. We studied physico-chemical aspects of the sol and gel states of the CNF/CHI formulations, including the rheological behavior in relation to injectability (sol state) and fiber mechanical reinforcement (gel state). CNF-CHI interactions could be evidenced by a double flow behavior due to the relaxation of the CHI polymer chains and those interacting with the CNFs. At high shear rates resembling the injection conditions with needles commonly used in surgical treatments, both the reference CHI viscous solutions and those filled with CNFs exhibited similar rheological behavior. The neutralization of the flowing and weakly acidic CNF/CHI suspensions yielded composite hydrogels in which the nanofibers reinforced the CHI matrix. We performed evaluations in relation to the biomedical application, such as the effect of the intradiscal injection of the CNF/CHI formulation in pig and rabbit spine models on disc biomechanics. We showed that the injectable formulations became hydrogels in situ after intradiscal gelation, due to CHI neutralization occurring in contact with the body fluids. No leakage of the injectate through the injection canal was observed and the gelled formulation restored the disc height and loss of mechanical properties, which is commonly related to disc degeneration.

Fabrication of a Metal Nanoparticles and Polymer Nanofibers Composite Material by an in Situ Chemical Synthetic Route

Langmuir ◽  
2005 ◽  
Vol 21 (17) ◽  
pp. 7964-7967 ◽  
Author(s):  
Kaushik Mallick ◽  
Mike J. Witcomb ◽  
Andy Dinsmore ◽  
Mike S. Scurrell
Keyword(s):  
Composite Material ◽  
Metal Nanoparticles ◽  
Synthetic Route ◽  
Polymer Nanofibers

scholarly journals Pore functionalized PVDF membranes with in-situ synthesized metal nanoparticles: Material characterization, and toxic organic degradation

2017 ◽  
Vol 530 ◽  
pp. 147-157 ◽  
Author(s):  
Hongyi Wan ◽  
Nicolas J. Briot ◽  
Anthony Saad ◽  
Lindell Ormsbee ◽  
Dibakar Bhattacharyya
Keyword(s):  
Metal Nanoparticles ◽  
Material Characterization ◽  
Organic Degradation
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