In a typical photocatalytic process, the photo-induced electron–hole pairs can be used to degrade dye wastewater or to promote the splitting of water for hydrogen evolution. Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization. All ferroelectrics are pyroelectric and all pyroelectrics are piezoelectric. Ferroelectric materials possess the ability to convert vibration energy or cold-hot alternation thermal-energy into electric energy. I will show my recent work related on some novel catalytic design such as piezocatalysis and pyrocatalysis of ferroelectric micro-/nanomaterials for application in dye wastewater degradation and water splitting into hydrogen through harvesting the environmental vibration energy or cold-hot fluctuation thermal-energy.