| Title | Three-Dimensional Decoupling Co-Catalyst from a Photoabsorbing Semiconductor as a New Strategy To Boost Photoelectrochemical Water Splitting |
| Authors | Lin, He Long, Xia An, Yiming Zhou, Dan Yang, Shihe |
| Affiliation | Peking Univ, Guangdong Key Lab Nanomicro Mat Res, Sch Chem Biol & Biotechnol, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China Hong Kong Univ Sci & Technol, Dept Chem, Clear Water Bay, Kowloon, Hong Kong, Peoples R China |
| Keywords | Photoelectrochemical water splitting cocatalyst decoupling conducting polymer network in situ formation |
| Issue Date | 2019 |
| Publisher | NANO LETTERS |
| Abstract | A cocatalyst is normally deposited on a (PAS) for photoelectrochemical (PEC) water splitting, but with drawbacks of limited loading, reduced light absorption, and tendency of charge recombination. To tackle these problems, a scheme of three-dimensional (3D) decoupling cocatalysts from the PAS with a pore-spanning crisscross conducting polymer host is proposed in this work. To demonstrate the concept, a facile method was developed for the in situ cogrowth of FeOx nanoparticles and conducting polymer (CP) network in various PAS with different microstructures such as a TiO2 nanorod array, WO3 nanosheet array, and planar TiO2 nanoparticle film, generating the bespoke photoanodes. The as-synthesized photoanodes exhibited a significantly enhanced PEC water splitting performance, which is clearly shown to arise from the improved light utilization, increased catalytic active sites, enhanced charge separation, and decreased electrochemical impedance of the photoelectrode. This 3D decoupling strategy is expected to open a promising direction for designing efficient PEC cells. |
| URI | http://hdl.handle.net/20.500.11897/552238 |
| ISSN | 1530-6984 |
| DOI | 10.1021/acs.nanolett.8b04278 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 化学生物学与生物技术学院 |
