文献类型：期刊文献

英文题名：Intensive turbulence eddy-induced piezoelectric polarization boosting photocatalytic hydrogen production in ZnO/NF

作者：Huang, Changfei[1];Deng, Zhuofan[1];Yuan, Cong[1];Zhang, Meng[1];Wang, Xinlan[1];Yang, Danhui[1];Tian, Chengcheng[1,2];Wang, Hualin[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2026

卷号：406

外文期刊名：FUEL

收录：;EI(收录号：20254119298898);WOS:【SCI-EXPANDED(收录号:WOS:001597926000006)】；

基金：This work was finically supported by the National Natural Science Foundation of China (NSFC, Grant No. 52400080 and 52170109) , the Shanghai Science and Technology Innovation Plan (22DZ1208600) , and the Innovation Program of Shanghai Municipal Education Commission (2023ZKZD41) .

语种：英文

外文关键词：Flow field; Piezo-photocatalytic water splitting; Hydrogen production; CFD simulation; Hydro-cyclone reactor

摘要：Fluid eddy-induced piezoelectric effect has been extensively employed to boost photocatalysis. However, the dynamic fluid-induced stress distribution on porous support and the effect of variable surface shear stresses on catalytic activity remain unclear in a rotating fluid-driven piezo-photocatalytic process. Herein, the ZnOsupported porous nickel foam (NF) monolithic catalyst was successfully fabricated, where the interconnected pore network induced intensive turbulence eddies, leading to enhanced light absorption and accelerated mass transport during photocatalysis. Furthermore, the effects of piezoelectric polarization intensity and porosity on hydrogen production via photocatalytic water splitting were systematically investigated. The ZnO/NF particles (porosity: 40 PPI) under flow-field rotation achieved an optimal hydrogen evolution rate of 1.02 mmol center dot g-1 center dot h-1, representing a 7.3-fold improvement compared to the non-porous conductive glass loaded ZnO (0.14 mmol center dot g-1 center dot h-1). The computational fluid dynamics (CFD) simulation revealed that the dynamic pressure distribution increased with porosity, whereas the effective light absorption area exhibited an opposite trend, underscoring the role of piezoelectric polarization in enhancing photocatalytic hydrogen production. Additionally, for the scalable production of clean hydrogen, a hydro-cyclonic piezo-photocatalytic reactor for H2 production was initially designed and assembled under laboratory conditions.