An Efficient and Extremely Stable Photocatalytic PtSe2/FTO Thin Film for Water Splitting. Issue 1 (30th September 2019)

• Record Type: Journal Article
• Authors: Sun, Xiangnan; Zhang, Hechuan; Li, Xitao; Zheng, Yan-Zhen; Wu, Jiaojiao; Li, Nan; Ding, Haiyang; Lv, Xinding; Tao, Xia
• Is Part Of: Energy technology. Volume 8:Issue 1(2020:Jan.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-30
• Subjects: fluorine-doped tin oxide -- H2 evolution -- PtSe2 -- photocatalytics -- ultrastability; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201900903
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : Promising photocatalytic films are more viable for practical solar‐driven hydrogen (H2 ) evolution, which remains scarcely explored so far. Herein, a series of PtSe2 thin films are synthesized through thermal evaporation of Pt onto commercial fluorine‐doped tin oxide (FTO) substrates, followed by direct selenization through chemical vapor deposition (CVD). It is found that the optimized PtSe2 /FTO film exhibits an outstanding hydrogen evolution reaction (HER) rate of 506 mmol h −1 m −2, which is far higher than that of blank FTO and PtSe2 /Si films, and even sevenfold higher than that of the Pt/FTO film (68 mmol h −1 m −2 ). Surprisingly, the HER activity of the PtSe2 /FTO film has no decay after 15 recycling runs, aging for 1 year, and an additional eight recycling runs. The excellent HER activity and ultrastability of the PtSe2 /FTO film is further investigated by electronic/spectroscopic characterizations. All results show that the PtSe2 /FTO film has the potential to be a viable photocatalyst for solar‐driven H2 production. Abstract : PtSe2 thin films are synthesized by thermal evaporation of Pt onto commercial fluorine‐doped tin oxide (FTO) substrates and direct selenization through chemical vapor deposition. The PtSe2 /FTO film exhibits outstanding hydrogen evolution reaction activity and ultrastability. The findings pave a new route for designing and constructing high‐efficiency and highly stable photocatalytic film systems with applications in converting solar energy into chemical fuels.