Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 81, Issue -, Pages 124-127Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2017.06.017
Keywords
Room temperature thermocatalysis; Thermo-electrochemical coupling; Pyroelectric effect; ZnO nanorods
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Funding
- National Natural Science Foundation of China [51502266]
- National College Students' Innovative Undertaking Training Project of China [201610345021]
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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 degrees C heating- cooling cycles, ZnO nanorods are shown to possess high thermocatalytic activity for Rhodamine B, resulting in similar to 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.
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