Highly efficient pyrocatalysis of pyroelectric NaNbO3 shape-controllable nanoparticles for room-temperature dye decomposition. (May 2018)

• Record Type: Journal Article
• Authors: You, Huilin; Wu, Zheng; Wang, Lang; Jia, Yanmin; Li, Sheng; Zou, Jun
• Is Part Of: Chemosphere. Volume 199(2018)
• Page Start: 531
• Page End: 537
• Publication Date: 2018-05
• Subjects: Pyroelectric effect -- Pyrocatalytic effect -- Pyrocatalysis -- NaNbO3; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2018.02.059
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: In this work, pyrocatalytic effect is realized in hydrothermally-synthesized pyroelectric NaNbO3 shape-controllable nanoparticles via the product of pyroelectric effect and electrochemical redox. A pyro-catalysis is designed to decompose dye wastewater. Under the 23–50 °C heating-cooling cycle, the maximum pyrocatalytic decomposition ratio of NaNbO3 nanorods, nanosheets and nanocubes are 96%, 76% and 33%, respectively. The pyrocatalytic effect of NaNbO3 nanoparticles is potential in developing a environmentally-friendly technology for room-temperature pyrocatalysis through utilizing natural heat energy. Graphical abstract: Image Highlights: Pyrocatalytic effect is realized in the hydrothermally-synthesized NaNbO3 . Pyrocatalytic decomposition ratio for Rhodamine B reaches ∼96%. Pyro-catalysis is potential in dye decomposition utilizing natural heat energy.