The BiFeO₃/g-C₃N₄ heterostructure, which is fabricated via a simple mixing-calcining method, benefits the significant enhancement of the pyrocatalytic performance. With the growth of g-C₃N₄ content in the heterostructure pyrocatalysts from 0 to 25%, the decomposition ratio of Rhodamine B (RhB) dye after 18 cold-hot temperature fluctuation (25–65 °C) cycles increases at first and then decreases, reaching a maximum value of ∼94.2% at 10% while that of the pure BiFeO₃ is ∼67.7%. The enhanced dye decomposition may be due to the generation of the internal electric field which strengthens the separation of the positive and negative carriers and further accelerates their migrations. The intermediate products in the pyrocatalytic reaction also have been detected and confirmed, which proves the key role of the pyroelectric effect in realizing the dye decomposition using BiFeO₃/g-C₃N₄ heterostructure catalyst. The pyroelectric BiFeO₃/g-C₃N₄ heterostructure shows the potential application in pyrocatalytically degrading dye wastewater.

所述的BiFeO ₃ / GC ₃ Ñ ₄异质结构，其通过简单的混合，煅烧方法制造，益pyrocatalytic性能的显著增强。随着异质结构热催化剂中gC ₃ N ₄含量的增加（从0％到25％），若在18个冷热温度波动（25-65°C）循环后，若丹明B（RhB）染料的分解率先增大然后减小在10％时达到最大值〜94.2％，而纯BiFeO ₃达到最大值是〜67.7％。增强的染料分解可能是由于内部电场的产生，内部电场加强了正负载体的分离并进一步加速了它们的迁移。还检测并确定了热催化反应中的中间产物，这证明了热电效应在使用BiFeO ₃ / gC ₃ N ₄异质结构催化剂实现染料分解中的关键作用。热电BiFeO ₃ / gC ₃ N ₄异质结构显示了在热催化降解染料废水中的潜在应用。