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Enhanced Pyroelectric Catalysis of BaTiO3 Nanowires for Utilizing Waste Heat in Pollution Treatment
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-10-15 00:00:00 , DOI: 10.1021/acsami.8b11158 Jiang Wu 1 , Ni Qin 1 , Baowei Yuan 1 , Enzhu Lin 1 , Dinghua Bao 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-10-15 00:00:00 , DOI: 10.1021/acsami.8b11158 Jiang Wu 1 , Ni Qin 1 , Baowei Yuan 1 , Enzhu Lin 1 , Dinghua Bao 1
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A novel catalytic effect of pyroelectric materials induced by a change in temperature, namely pyroelectric catalysis, was found to be attractive due to its ability to utilize waste heat in pollution treatment. In this work, the pyroelectric catalytic properties of BaTiO3 (BTO) nanowires synthesized by a template hydrothermal method have been thoroughly investigated. The nanowires with an elongated polar axis show a superior pyroelectric catalytic performance in comparison with the equiaxial nanoparticles. Our numerical simulation results with a finite element method indicate that the enhanced catalytic efficiency of BTO nanowires can be attributed to the higher pyroelectric potential. On the basis of the pyroelectric effect and our experimental results, a pyroelectric catalytic degradation mechanism has been proposed by taking into account the migration of charge carriers and the formation of reaction radicals. This study for enhancing the pyroelectric catalytic activity by using BTO nanowires may provide a facile, promising, and new reusable strategy for the catalytic degradation of organic dye pollutant by means of temperature variation. It is hoped that the present work gives a clear understanding of the mechanism of pyroelectric catalysis.
中文翻译：
利用废热污染处理增强BaTiO 3纳米线的热电催化。
由于温度变化而利用余热的能力，发现由温度变化引起的热电材料的新型催化作用即热电催化是有吸引力的。在这项工作中，BaTiO 3的热电催化性能已经彻底研究了通过模板水热法合成的（BTO）纳米线。与等轴纳米粒子相比，具有延长的极轴的纳米线显示出优异的热电催化性能。我们用有限元方法进行的数值模拟结果表明，BTO纳米线的催化效率提高可以归因于较高的热电势。基于热电效应和我们的实验结果，通过考虑电荷载流子的迁移和反应自由基的形成，提出了热电催化降解机理。这项通过使用BTO纳米线增强热电催化活性的研究可能会提供一种简便而有希望的方法，以及通过温度变化催化降解有机染料污染物的可重复使用的新策略。希望目前的工作能对热电催化机理有一个清晰的认识。
更新日期：2018-10-15
中文翻译：
利用废热污染处理增强BaTiO 3纳米线的热电催化。
由于温度变化而利用余热的能力，发现由温度变化引起的热电材料的新型催化作用即热电催化是有吸引力的。在这项工作中，BaTiO 3的热电催化性能已经彻底研究了通过模板水热法合成的（BTO）纳米线。与等轴纳米粒子相比，具有延长的极轴的纳米线显示出优异的热电催化性能。我们用有限元方法进行的数值模拟结果表明，BTO纳米线的催化效率提高可以归因于较高的热电势。基于热电效应和我们的实验结果，通过考虑电荷载流子的迁移和反应自由基的形成，提出了热电催化降解机理。这项通过使用BTO纳米线增强热电催化活性的研究可能会提供一种简便而有希望的方法，以及通过温度变化催化降解有机染料污染物的可重复使用的新策略。希望目前的工作能对热电催化机理有一个清晰的认识。
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