Ultrathin hematite film for photoelectrochemical water splitting enhanced with reducing graphene oxide. (8th June 2015)

• Record Type: Journal Article
• Authors: Wu, Quanping; Zhao, Jun; Liu, Kan; Wang, Hongyan; Sun, Zhe; Li, Ping; Xue, Song
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 21(2015)
• Page Start: 6763
• Page End: 6770
• Publication Date: 2015-06-08
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2015.03.160
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">Ultrathin hematite films have been prepared on FTO using a separated two-phase hydrolysis–solvothermal reaction. The film thickness can be controlled by the number of deposition cycles. The Photoanode based on hematite film with 7 deposition cycles generated a photocurrent of 0.61 mA cm⁻² at +1.5 V vs. RHE. The photocurrent can be improved by coating a layer of reducing graphene oxide (RGO) through spin coating. The enhanced performance is attributed to the promoting effects of RGO which acted as hole collector and transporter in the electrodes. This research demonstrates that graphene can be used as an alternative co-catalyst to enhance photoelectrochemical water splitting activity of ultrathin hematite film. The as-prepared photoanodes were notably stable under water oxidation conditions.</p> </sec> </abstract>