As an old physical concept, triboelectrification is a common phenomenon in different mechanical movements and always plays a negative effect on our daily life. Collection of triboelectricity from ambient mechanical energy recently has been realized via a triboelectric nanogenerator (TENG). Herein, we successfully used the triboelectricity from the magnetic stirring induced friction to catalytic degradation of organic dyes, therefore realizing the conversion of mechanical energy to electric energy and finally to chemical energy. The tribo-catalyst of BiOIO₃ exhibited an efficient catalytic activity where the dye degradation reached >90% after 6 h magnetic stirring, and meanwhile showed a superior durability. The charge exchange during the friction between catalyst and magnetic bar or beaker and the subsequent reaction of charges with aqueous solution to produce reactive oxygen species are considered to be responsible for the tribo-catalysis. However, due to the positive edge potential of conduction band (CB) of BiOIO₃, superoxide radicals cannot be generated by the reduction of dissolved oxygen with the electrons on CB. As a result, the holes on valence band (VB) and the hydroxyl radicals are mainly active species for dye degradation. This finding well demonstrates that catalysis reactions can be initiated by triboelectric charges on catalyst during harvesting small ambient mechanical energy.

作为一种古老的物理概念，摩擦起电是不同机械运动中的常见现象，并且始终对我们的日常生活产生负面影响。最近，通过摩擦电纳米发电机（TENG）实现了从周围机械能收集摩擦电。在这里，我们成功地利用了从电磁搅拌引起的摩擦到有机染料催化降解的摩擦电，从而实现了将机械能转化为电能，最终转化为化学能。BiOIO ₃的摩擦催化剂表现出有效的催化活性，在磁力搅拌6小时后，染料的降解率达到90％以上，同时显示出优异的耐久性。催化剂与电磁棒或烧杯之间的摩擦过程中的电荷交换以及随后的电荷与水溶液反应生成活性氧的现象被认为是摩擦催化的原因。但是，由于BiOIO ₃的导带（CB）的正边缘电势，通过在CB上的电子还原溶解的氧，不能生成超氧自由基。结果，价带（VB）上的孔和羟基自由基是染料降解的主要活性物种。该发现充分表明，在收获小的环境机械能期间，催化剂上的摩擦电荷可以引发催化反应。