高效传质与电子转移的全纳米线光催化燃料电池自驱动净水同步产氢

Self‑driven water purification and simultaneous hydrogen generation by all‑nanowire photocatalytic fuel cell with enhanced mass and electron transfer

分别以三维分级碳布基底上组装的TiO_(2)纳米线阵列和铂化的硅纳米线阵列作为光阳极和光阴极,构建了具有高效传质和电子转移特征的全纳米线光催化燃料电池。在光照作用下,光阳极微流道内的光生空穴能有效氧化降解有害污染物,这同时增强了光电子还原水产氢的活性。与传统的平面式光电极相比,全纳米线光催化燃料电池在不需要外部偏压条件下即可高效降解模拟印染废水和同步生成氢气新能源。

This paper constructed an all-nanowire photocatalytic fuel cell with enhanced mass and electron transfer by integrating TiO_(2) nanowire array photoanodes on three-dimensional(3D)hierarchical carbon cloth and platinized Si nanowire array photocathodes.Under light illumination,the potholes generated at the microfluidic photoanodes effectively oxidize various harmful contaminants,which significantly enhanced the reduction of water by photoelectrons for hydrogen gas production.Compared with conventional planar photoelectrodes,the all-nanowire photocatalytic fuel cell can efficiently degrade simulated dye wastewater and simultaneously generate hydrogen new energy without requiring an external bias voltage.