3 years ago

Thermo-electrochemical coupling for room temperature thermocatalysis in pyroelectric ZnO nanorods

Thermo-electrochemical coupling for room temperature thermocatalysis in pyroelectric ZnO nanorods
A strong thermo-electrochemical coupling in solvothermally-synthesized ZnO nanorods is achieved by combining pyroelectric effects and electrochemical oxidation, and is employed for room temperature thermocatalysis. Under 22–62°C heating–cooling cycles, ZnO nanorods are shown to possess high thermocatalytic activity for Rhodamine B, resulting in ~98.15% decomposition. The active species are shown to be hydroxyl and superoxide radicals generated from the reaction between pyroelectrically-induced charges and the hydroxyl ions/oxygen gas in solution. After being recycled six times, the ZnO shows no decrease in thermocatalytic activity. Thermocatalysis offers a non-toxic, highly efficient, recyclable approach for utilization of thermal energy at room temperature.

Publisher URL: www.sciencedirect.com/science

DOI: S1388248117301716

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