Chemicals & Materials

A systematic experimental study of the synthesis of copper oxide nanoparticles and nanoporous films is presented. Powders were made by flame spray pyrolysis method with end applications in the photoeclectrochemical production of hydrogen. Inhibited particle growth was observed for prticles made...

S-PEEK has been known as one of the promising candidates for fuel cell application since it has high thermo-oxidative stability and extraordinary mechanical properties as well as high cost effectiveness. However, the nanoscale structure and transport properties for S-PEEK have not been thoroughly...

The most popular catalyst for low temperature proton exchange membrane fuel cells (PEMFC) is platinum (Pt) nanoparticles supported on carbon [1]. One of the major issues concerning Pt nanoparticles is the very slow kinetics of oxygen reduction reaction (ORR) which limits overall performance of...

Fuel Cells (FCs) have been recognized as one important device for efficient transformation of chemical energy to electricity. Among the different FC types those of Polymer Electrolyte Membranes (PEMs) have received significant attention. In such FCs, a membrane that ideally enables only proton...

The sub-picosecond mobility and lifetime of free electrons injected into TiO2 nanotubes were probed with sub-picosecond temporal resolution using time resolved terahertz spectroscopy (TRTS). The photoconductivity spectra of the nanotubes revealed the free electrons to be very mobile, however most...

Dye-sensitized solar cells (DSSCs) made from oriented, one-dimensional (1D) semiconductor nanostructures such as nanorods, nanowires, and nanotubes are receiving wide attention because direct connection of the point of photogeneration with the collection electrode using such 1D structures may...

Semiconductor nanostructure-based solar cells, such as dye-sensitized solar cells, all-inorganic nanostructure solar cells, and hybrid inorganic nanostructure-conductive polymer composite solar cells, are promising candidates for future-generation photovoltaic devices due to their advantages in low...

There is significant interest in combining carbon nanotubes with semiconducting polymers for photovoltaic applications due to potential advantages from smaller exciton transport lengths and enhanced charge separation. However, to date, bulk heterojunction (BHJ) devices have demonstrated relatively...

Abstract: TiO2 nanowires were sensitized with CdS and CdTeS quantum dots which were grown using an in situ colloidal method using both conventional organic solvents and supercritical carbon dioxide (scCO2). No pretreatment of the TiO2 nanowires was required prior to nanoparticle generation. The...