Ferroelectric　materials　have　multiple　characteristics　in　ferroelectric,　piezoelectric,　pyroelectric　properties,　which　provide　an　attractive　prospect　for　simultaneously　harvesting　multiple　energy　sources　for　catalytic　applications.　However,　the　crucial　challenge　for　wastewater　purification　lies　in　the　development　of　ferroelectric　materials　with　improved　functions　and　the　design　of　advanced　oxidation　processes.　Herein,　Sr0.3Ba0.7TiO3　(SBT-0.3)　nano-catalysts　modified　by　PVP　surfactant　could　significantly　promote　water　recovery　efficiency　from　the　rhodamine　B　(RhB),　which　is　as　high　as　98%　by　simultaneously　collecting　two　types　of　energy　sources　of　mechanical　friction　and　temperature　fluctuation　from　the　natural　environment　for　tribo-/pyro-catalysis　under　dark　conditions.　It　was　found　that　the　samples　containing　PVP　surfactant　show　significantly　improved　performance　in　the　separation　of　charge　carriers　in　comparison　with　those　without　PVP　surfactant.　The　permanent　polarization　in　SBT-0.3,　coupled　with　the　piezo-/pyro-potential,　could　generate　internal　field　and　therefore　reduce　charge　recombination.　It　also　helps　to　absorb　charged　species　from　the　dye　solution,　which　favors　the　reaction　with　active　oxygen　to　cause　the　cleavage　and　breakdown　of　organic　molecules.　The　mechanism　of　RhB　decomposition　mediated　by　SBT-0.3　ferroelectric　is　also　discussed.　This　work　favors　us　to　in-depth　understanding　for　the　tribo-/pyro-catalysis　and　hence　proposes　a　new　strategy　to　improve　the　water　purification　efficiency　of　ferroelectric　nanocrystals.　©　2021　Elsevier　B.V.