Fabrication of PbS/CdS/TiO <sub>2</sub> nanotube array for enhanced photoelectrochemical response and photocathodic protection performance
A ternary stepped heterojunction of PbS/CdS/TiO<sub>2</sub>was fabricated using the successive ionic layer adsorption and reaction method, which significantly enhanced the photocathodic protection performance of TiO<sub>2</sub>. The experimental results demonstrate the superiority of the dual-loading modification over its single-loading counterparts. The co-loading of CdS and PbS resulted in a TiO<sub>2</sub>nanocomposite with a reduced bandgap of 1.0 eV, a further extended light absorption range, and enhanced visible light utilization efficiency. The PbS/CdS/TiO<sub>2</sub>electrode exhibited a photogenerated current density of 6.46 mA cm<sup>-2</sup>, which is 1.6 times and 22.1 times higher than that of PbS/TiO<sub>2</sub>and pure TiO<sub>2</sub>, respectively. The dual loading of metal sulfide semiconductors markedly improved the photoelectrochemical properties of TiO<sub>2</sub>and its corresponding photocathodic protection effect.
Authors
- Yun Gao (ORCID: https://orcid.org/0000-0001-9416-1769)
- Chong Peng (ORCID: https://orcid.org/0000-0002-0593-3083)
- Rongjie Gao (ORCID: https://orcid.org/0000-0002-1831-9234)
- Zihao Qiao
Institutions
- Ocean University of China (CN)
Publication Details
- Journal
- Nanotechnology
- Published
- 2025-12-12
- DOI
- https://doi.org/10.1088/1361-6528/ae2c04
- Primary Topic
- TiO2 Photocatalysis and Solar Cells
- Type
- article
- Field-Weighted Citation Impact
- 0.00