@article{Hwang2025, 
author = {Sung Won Hwang and Yoo Jae Jeong and Runfa Tan and Indhujasri Saravanan and Hyun Soo Han and Dong Hoe Kim and In Sun Cho},
title = {Texture development and surface reconstruction of BiVO4 photoanode via one-pot hydrothermal reaction for enhanced photoelectrochemical water splitting},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {3},
pages = {9221043},
keywords = {surface reconstruction, texture, hydrothermal, photoelectrochemical water splitting, BiVO4, ethylene glycol (EG)},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221043},
doi = {10.26599/JAC.2025.9221043},
abstract = {The simultaneous optimization of the bulk and surface characteristics of photoelectrodes is essential to maximize their photoelectrochemical (PEC) performance. We report a novel one-pot hydrothermal synthesis of textured and surface-reconstructed BiVO4 photoanodes (ts-BVO), achieving significant improvements in PEC water splitting. By controlling precursor molarity and ethylene glycol (EG) addition, we developed a stepwise dual reaction (SDR) mechanism, which enables simultaneous bulk texture development and surface reconstruction. The optimized CoBi/ts-BVO photoanode exhibited a photocurrent density of 4.3 mA∙cm−2 at 1.23 V vs. reversible hydrogen electrode (RHE) with a high Faradaic efficiency of 98% under one sun illumination. Compared with nontextured BiVO4, the charge transport efficiency increased from 8% to 70%, whereas the surface charge transfer efficiency improved from 9% to 85%. These results underscore the critical role of both bulk and surface engineering in enhancing PEC performance. Our findings offer a streamlined approach for improving the intrinsic properties of photoanodes in solar water splitting.}
}