Pulse Electrodeposition of Cu-ZnO and Mn-Cu-ZnO Nanowires
- Louisiana State Univ., Baton Rouge, LA (United States)
Cu–ZnO and Mn–Cu–ZnO nanowires are attractive catalysts for alcohol synthesis from CO hydrogenation reactions. Nanowire alloys are pulse electrodeposited into track etched polycarbonate membranes using aqueous electrolytes including Mn(NO3)2, Cu(NO3)2, Zn(NO3)2, and NH4 NO3. Pulse waveforms with a cathodic current density of 50.7mAcm -2 for 50 ms (on-time), with varying off-times (400, 500, and 600 ms), are used to fabricate nanowire arrays (400 nm diameter, 25μm long, and pore density of 1.5×108pores cm-2 ). Pulse waveforms allow significantly higher copper concentrations and better control of zinc and manganese concentrations within nanowires. X-ray diffraction results show preferential growth in the (111) direction and crystallite size increases with an increase in off-time. Waveforms with longer off-times (500 and 600 ms) resulted in nanowires with relatively higher copper concentrations due to improved copper transport in nanopores. The nanowire surface has no manganese; however, the core shows manganese, which increases with the decrease in off-time. The effect of deposition conditions and electrolyte composition on nanowire properties are explained and discussed.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Atomic-Level Catalyst Design (CALCD)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- SC0001058
- OSTI ID:
- 1065099
- Journal Information:
- Journal of the Electrochemical Society, Vol. 157, Issue 9; Related Information: CALCD partners with Louisiana State University (lead); Clemson University; University of Florida; Georgia Institute of Technology; Grambling State University; Oak Ridge National Laboratory; Ohio State University; Pennsylvania State; Texas A&M University; Vienna University of Technology, Austria; University of Utrecht, Netherlands
- Publisher:
- Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
Novel Pulse Electrodeposited Co-Cu-Zn Nanowire/tubeCatalysts for C1-C4 Alcohols and C2 - C6 (except C5) Hydrocarbons from CO and H2
Role of Cu-Ion Doping in Cu-α-MnO2 Nanowire Electrocatalysts for the Oxygen Reduction Reaction