Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (4): 694-696.DOI: 10.19894/j.issn.1000-0518.210464

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WO3/Fe2TiO5 Composite Photoanode Deposited via Electrospray for Enhanced Photoelectrochemical Water Splitting

Xiao-Feng WU, De-Shun CHEN, Wei MA, Ke-Ke HUANG()   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2021-09-13 Accepted:2021-11-16 Published:2022-04-01 Online:2022-04-19
  • Contact: Ke-Ke HUANG
  • About
  • Supported by:
    the National Natural Science Foundation of China(21801090);the Education Department of Jilin Province(JJKH20211044KJ);the Project on Experimental Technique of Jilin University(409020720202)


Heterojunction construction is one of efficient routes for improving light response and carrier transport of semiconductor. Here, nanostructured WO3 and Fe2TiO5 films were sequentially deposited on the fluorine-doped SnO2 (FTO) coated glass substrate by two electrospray steps, and the performance of as-prepared photoanode was studied in detail. Benefited from the complex surface structure in nano-micro scale, the trapping ability of photons and the active area for water oxidation reaction are enhanced effectively. More importantly, the photo-generated charge carrier recombination is restrained by the heterojunction formed at the interface of WO3 and Fe2TiO5 and the charge transfer is accelerated due to the presence of built-in potential, which promotes the photoelectrochemical water splitting performance. The photocurrent density of WO3/Fe2TiO5 photoanode is 1.4 and 4.6 fold larger than those of pristine Fe2TiO5 at 1.23 V (vs.RHE) and 1.6 V (vs.RHE), respectively.

Key words: Photoelectrochemical, Heterojunction, Electrospray, Water Splitting, Photoanode

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