Electrodeposited WO3/Au photoanodes for photoelectrochemical reactions

Lorna Jeffery Minggu, and Nurul Akmal Jaafar, and Ng, Kim Hang and Khuzaimah Arifin, and Rozan Mohamad Yunus, (2020) Electrodeposited WO3/Au photoanodes for photoelectrochemical reactions. Sains Malaysiana, 49 (12). pp. 3209-3217. ISSN 0126-6039


Official URL: https://www.ukm.my/jsm/malay_journals/jilid49bil12...


This work aims to study the effect of gold (Au) loading on the photoelectrochemical behavior of tungsten trioxide (WO3 ) photoelectrodes. The WO3 film has been fabricated via electrodeposition method with constant potential on fluorine doped tin oxide (FTO) glass substrate. The Au nanoparticle loading on WO3 films surface was also prepared by constant potential electrodeposition. Due to the small amount of Au loading, the band gap values of the plasmonized WO3 remained around 2.6 eV. However, during the photoelectrochemical analysis, the photoactivity of the plasmonized WO3 photoelectrodes improved >100% with a minimal amount of Au loading compared to the pristine WO3 . The photocurrent generation was further enhanced with the presence of organic donors (methanol and formic acid). The photocurrent achieved 3.74 mA/cm2 when 1.0 M of formic acid was added. Plausible charge transfer mechanism was suggested.

Item Type:Article
Keywords:Au nanoparticles; Electrodeposition; Photoelectrochemical; Waste degradation; WO3 films
Journal:Sains Malaysiana
ID Code:16186
Deposited By: ms aida -
Deposited On:10 Feb 2021 03:02
Last Modified:13 Feb 2021 14:32

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