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An Efficient and Extremely Stable Photocatalytic PtSe 2 /FTO Thin Film for Water Splitting
Author(s) -
Sun Xiangnan,
Zhang Hechuan,
Li Xitao,
Zheng Yan-Zhen,
Wu Jiaojiao,
Li Nan,
Ding Haiyang,
Lv Xinding,
Tao Xia
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201900903
Subject(s) - tin oxide , materials science , photocatalysis , thin film , chemical vapor deposition , chemical engineering , water splitting , doping , nanotechnology , evaporation , optoelectronics , catalysis , chemistry , organic chemistry , physics , engineering , thermodynamics
Promising photocatalytic films are more viable for practical solar‐driven hydrogen (H 2 ) evolution, which remains scarcely explored so far. Herein, a series of PtSe 2 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 PtSe 2 /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 PtSe 2 /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 PtSe 2 /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 PtSe 2 /FTO film is further investigated by electronic/spectroscopic characterizations. All results show that the PtSe 2 /FTO film has the potential to be a viable photocatalyst for solar‐driven H 2 production.