Highly efficient pyrocatalysis of pyroelectric NaNbO3 shape-controllable nanoparticles for room-temperature dye decomposition

Huilin You; Zheng Wu; Lang Wang; Yanmin Jia; Sheng Li; Jun Zou

doi:10.1016/j.chemosphere.2018.02.059

Highly efficient pyrocatalysis of pyroelectric NaNbO₃ shape-controllable nanoparticles for room-temperature dye decomposition

Chemosphere. 2018 May:199:531-537. doi: 10.1016/j.chemosphere.2018.02.059. Epub 2018 Feb 9.

Authors

Huilin You¹, Zheng Wu², Lang Wang¹, Yanmin Jia³, Sheng Li¹, Jun Zou⁴

Affiliations

¹ Department of Physics, Zhejiang Normal University, Jinhua, 321004, China.
² College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China. Electronic address: wuzheng@zjnu.edu.cn.
³ Department of Physics, Zhejiang Normal University, Jinhua, 321004, China. Electronic address: ymjia@zjnu.edu.cn.
⁴ College of Science, Shanghai Institute of Technology, Shanghai, 200235, China.

PMID: 29455123
DOI: 10.1016/j.chemosphere.2018.02.059

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.

Keywords: NaNbO(3); Pyrocatalysis; Pyrocatalytic effect; Pyroelectric effect.

MeSH terms

Catalysis
Coloring Agents / chemistry*
Nanoparticles / chemistry*
Nanotubes / chemistry
Niobium / chemistry*
Sodium / chemistry*
Temperature*

Substances

Coloring Agents
sodium niobate
Niobium
Sodium