Wang Z. – TechConnect Briefs

Biofilm as a versatile stablizer and promoter for Pd nanoparticle (PdNP) recovery and catalytic denitrification

Zhou C., Rittmann B.E., Wang Z., Ontiveros-Valencia A., Krajmalnik-Brown R., Arizona State University, US

There is an increasing demand on recycling of palladium from mining waste streams for purposes of resource retrieval and catalytic application. We introduced the novel H2-based membrane biofilm reactor (MBfR) technology to recover Pd in [...]

Computer modeling of complex block copolymer micelles with metal-ligand self-assembly

Wang Z., Dormidontova E.E., University of Connecticut, US

For many applications of nanostructured materials it is essential to understand the principles controlling self-assembly, which is often a challenging task due to the heterogeneity of building blocks, (different chemical nature, size, shape, deformability, etc.) [...]

Synthesis and characterization of methoxy poly(ethylene glycol)-O-chitosan-polyethylenimine as a noviral carrier for gene delivery and expression

Yu Y.Y., Wang G., Wang Z., Cai L., Wang G., Wang Z., Yang X., Xu X.H., Xu Z.G., Wan X.P., Wang G., Wang Z., Xu X.H., Xu Z.G., Li Y., Jiang Q., Gao R., Sichuan University, CN

A novel water-soluble chitosan (CS) derivative，methoxy poly(ethylene glycol)-O-chitosan- polyethylenimine(mPEG-O-CS-PEI), was synthesized by grafting polycationic polyethylenimine (PEI) and methoxy poly (ethylene glycol) (mPEG) onto chitosan, the copolymer was characterized and confirmed by 1H-NMR and FT-IR spectra. [...]

Radiolabeling of Nanoshells with Cu-64 and In-111 for PET and SPECT Imaging in Rats

Xie H., Wang Z., Bao A., Goins B., Phillips W.T., Coleman C.L., Texas Southern University, US

Here we report for the first time the radioactive labeling of gold-silica nanoshells with Cu-64 and In-111. A bifunctional polyethylene glycol (PEG2000) is used as crosslinker to connect nanoshells with DOTA or DTPA, which are [...]

Mimicking Photosynthesis to Make Functional Nanostructures and Nanodevices

Shelnutt J.A., Wang Z., Song Y., Medforth C.J., Pereira E., Sandia National Laboratories, US

Photocatalytic porphyrins are used to reduce metal complexes from aqueous solution and, further, to control the deposition of metals onto porphyrin nanotubes and surfactant assembly templates to produce metal composite nanostructures and nanodevices. For example, [...]

Modeling Facet Growth of Cu Thin Films

Wang Z., Li Y., Adams J.B., Arizona State University, US

We present a Kinetic Lattice Monte Carlo (KLMC) model, which describes deposition, surface self-diffusion, nucleation, and film growth on fcc metal substrates. The activation energies for diffusion are calculated using embedded-atom method (EAM). Using this [...]