In JoVE (1)
Other Publications (1)
Articles by Joshua P. McClure in JoVE
A Rapid Synthesis Method for Au, Pd, and Pt Aerogels Via Direct Solution-Based Reduction Fred J. Burpo1, Enoch A. Nagelli1, Lauren A. Morris2, Joshua P. McClure3, Madeline Y. Ryu1, Jesse L. Palmer1 1Department of Chemistry and Life Science, United States Military Academy, West Point, 2Armament Research, Development and Engineering Center, U.S. Army RDECOM-ARDEC, 3Sensors and Electron Devices Directorate, United States Army Research Laboratory A rapid, direct solution-based reduction synthesis method to obtain Au, Pd, and Pt aerogels is presented.
Other articles by Joshua P. McClure on PubMed
Harvesting Resonantly-trapped Light for Small Molecule Oxidation Reactions at the Au/α-FeO Interface Nanoscale. | Pubmed ID: 29664495 Plasmonic metal nanoparticles (NPs) extend the overall light absorption of semiconductor materials. However, it is not well understood how coupling metal NPs to semiconductors alters the photo-electrochemical activity of small molecule oxidation (SMO) reactions. Different photo-anode electrodes comprised of Au NPs and α-Fe2O3 are designed to elucidate how the coupling plays not only a role in the water oxidation reaction (WO) but also performs for different SMO reactions. In this regard, Au NPs are inserted at specific regions within and/or on α-Fe2O3 layers created with a sequential electron beam evaporation method and multiple annealing treatments. The SMO and WO reactions are probed with broad-spectrum irradiation experiments with an emphasis on light-driven enhancements above and below the α-Fe2O3 band gap. Thin films of α-Fe2O3 supported on a gold back reflective layer resonantly-traps incident light leading to enhanced SMO/WO conversion efficiencies at high overpotential (η) for above band-gap excitations with no SMO activity observed at low η. In contrast, a substantial increase in the light-driven SMO activity is observed at low η, as well as for below band-gap excitations when sufficiently thin α-Fe2O3 films are decorated with Au NPs at the solution-electrode interface. The enhanced photo-catalytic activity is correlated with increased surface oxygen content (hydroxyl groups) at the Au/α-Fe2O3 interface, as well as simulated volume-integrated near-field enhancements over select regions of the Au/α-Fe2O3 interface providing an important platform for future SMO/WO photo-electrocatalyst development.