@article{Zhao2026, 
author = {Xin Zhao and Wenzhong Wang},
title = {An efficient strategy to improve photoelectrochemical performance of TiO2 nanowire arrays by optimization electrolytes},
year = {2026},
journal = {Journal of Capital Normal University (Natural Science Edition)},
volume = {47},
number = {4},
pages = {1-10},
keywords = {nanowire array, PEC performance, electrolyte optimization, hole depletion, competitive oxidation reaction},
url = {https://www.sciopen.com/article/10.19789/j.1004-9398.2026.04.001},
doi = {10.19789/j.1004-9398.2026.04.001},
abstract = {Optimization of photoelectrochemical (PEC) performance for electrode is very important to efficiently utilize solar energy in the form of chemical energy. The aim of this study is to optimize the PEC performance of TiO2 nanowire array electrodes via the optimization of Na2SO3 and Na2SO4 electrolytes. The electrode shows significant improvement for the PEC performance in Na2SO3 electrolyte with a photocurrent density of 0.8 mA/cm2, which is 5 times higher than that in Na2SO4 electrolyte. The incident photon-to-current conversion efficiency obtained in Na2SO3 electrolyte is 14.7% at λ = 390 nm, which is 2.6 times higher than that in Na2SO4 electrolyte. The Mott-Schottky and electrochemical impedance spectroscopy measurements experimentally show that the improved PEC performance is attributed to the efficient separation of photo-generated electrons and holes induced by the consumption of holes by              S      O              3              2      −      . The results of this study provide a promising strategy to improve the PEC performance of electrode by choosing the optimal electrolyte.}
}