Journal article
Microwave‐Assisted Synthesis of Ultrastable Cu@TiO2 Core‐Shell Nanowires with Tunable Diameters via a Redox‐Hydrolysis Synergetic Process
ChemNanoMat : chemistry of nanomaterials for energy, biology and more, Vol.4(9), pp.914-918
09/2018
DOI: 10.1002/cnma.201800210
Abstract
The nanoscale integration of copper metal, frequently with semiconductor heterostructure interfaces, is a promising route for fabricating new micro‐/nanoelectronic devices. Synthesizing such systems using wet‐chemistry methods requires stabilization of nano‐Cu against corrosion/oxidation, which has proven to be challenging. Here we report a methodology for the facile preparation of Cu@TiO2 core‐shell nanowires (NWs). The synthesis combines redox formation of Cu NWs with kinetically controlled hydrolysis of a titania precursor in a single‐pot microwave reaction. The final core‐shell NWs can be precisely tailored with 20‐nm to 140‐nm Cu core diameters, aspect ratios >250, and a 10‐nm porous titania shell. This metal/semiconductor heterojunction is particularly important for its excellent photocatalytic activity. The rapid microwave‐assisted synthesis provides a potentially generalizable paradigm for the rational design of heterogeneous nanostructures with metals and oxides.
Fast, convenient, and uniform: High‐quality and ultrastable core‐shell Cu@TiO2 nanowires were synthesized by a microwave‐assisted one‐pot method, integrating the hydrolysis reaction towards TiO2 with the metal nanocrystal growth. The diameter of the Cu@TiO2 nanowires is selectively controllable by the reaction conditions.
Details
- Title: Subtitle
- Microwave‐Assisted Synthesis of Ultrastable Cu@TiO2 Core‐Shell Nanowires with Tunable Diameters via a Redox‐Hydrolysis Synergetic Process
- Creators
- Deyu Liu - University of California, Santa BarbaraBinghui Wu - University of California, Santa BarbaraSyed Mubeen - University of California, Santa BarbaraKunlun Ding - University of California, Santa BarbaraHongmei Zeng - Sichuan UniversityTracy T Chuong - University of California, Santa BarbaraMartin Moskovits - University of California, Santa BarbaraGalen D Stucky - University of California, Santa Barbara
- Resource Type
- Journal article
- Publication Details
- ChemNanoMat : chemistry of nanomaterials for energy, biology and more, Vol.4(9), pp.914-918
- DOI
- 10.1002/cnma.201800210
- ISSN
- 2199-692X
- eISSN
- 2199-692X
- Number of pages
- 5
- Grant note
- China Scholarship Council MRSEC Program of the National Science Foundation (DMR 1720256) US National Science Foundation (DMR 0805148)
- Language
- English
- Date published
- 09/2018
- Academic Unit
- Chemical and Biochemical Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984197525002771
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