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Density of nanoparticles matters in nanobiotechnology

Density of nanoparticles matters in nanobiotechnology

by David Tai Wei, LEONG

The integrity of the vasculature system is intrinsically sensitive to biophysical cues. We have earlier found that certain nanomaterials could induce endothelial leakiness (nanoparticle induced endothelial leakiness). We now report that the density of the nanomaterial, a basic intrinsic material property not implicated in many nanoparticle-mediated biological effects, predominantly dictates t...

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Elucidation of rapid methane- tetrahydrofuran hydrate formation kinetics: Applicable to gas storage

Elucidation of rapid methane- tetrahydrofuran hydrate formation kinetics: Applicable to gas storage

by Praveen LINGA

Methane storage as solidified natural gas (SNG) in the form of clathrate hydrates is an emerging, economically feasible and environmentally benign technology. Mixed methane (CH4) - tetrahydrofuran (THF) hydrates offer a paradigm shift to milder storage conditions and faster hydrate formation kinetics, providing a promising scenario to scale up the SNG technology. In this work, we synthesize m...

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MMMs with tunable free volume for H2 purification at 150°C

MMMs with tunable free volume for H2 purification at 150°C

by Neal, Tai-Shung, CHUNG

Membranes with attractive H2/CO2 separation properties at 150°C and thermally controlled free volume are the pre-requisites for their industrial application in pre-combustion CO2-removal processes. We report the H2/CO2 separation properties of di/tri-amine vapor cross-linked mixed matrix membranes (MMMs) with tunable free volume at elevated temperatures up to 150 °C. Free volume of cr...

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Reversed thermo-switchable molecular sieving membranes composed of two-dimensional metal-organic nanosheets for gas separation

Reversed thermo-switchable molecular sieving membranes composed of two-dimensional metal-organic nanosheets for gas separation

by Dan ZHAO

We pioneer a smart 2D MOF membrane for H2/CO2 separation.We prepared nm-thick two-dimensional (2D) membranes composed of metal-organic framework (MOF) nanosheets demonstrating reversed thermos-switchable molecular sieving gas separation performance. The MOF nanosheets were exfoliated by freeze-thaw approach in suitable solvent systems. In order to remove the nanoparticles or small fragments, ...

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Single-atom Catalysis

Single-atom Catalysis

by Ning YAN

Every Rh metal atom is a working horse!Atomically dispersed Rh catalysts supported on phosphotungstic acid (PTA) with Rh loading up to 0.9 wt % were prepared through a self-assembly method. Rh stays exclusively as single atom species coordinated to six oxygen atoms, plausibly located at the 4-fold hollow site on one phosphotungstic acid (PTA) molecule together with a chemically adsorbed O2 mo...

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