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[期刊论文]

Ultrasmall NiS decorated HNb3O8 nanosheeets as highly efficient photocatalyst for H2 evolution reaction

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author:

Xia, Yuzhou (Xia, Yuzhou.) [1] | Liang, Shijing (Liang, Shijing.) [2] | Wu, Ling (Wu, Ling.) [3] | Unfold

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EI

Abstract:

The construction of high-performance and stable nanocomposite photocatalyst remains a great challenge toward photocatalytic hydrogen evolution reaction, which is mainly due to the mediocre interfacial contact between the cocatalyst and the host. In this work, ultrasmall NiS is highly dispersed on HNb3O8 2D nanosheet via a facile electrostatic adsorption/self-assembly process. Interestingly, the growth of NiS is greatly suppressed by the interlayered spatial steric inhibition effect and a strong interaction between NiS and HNb3O8 nanosheet is formed. While the modification of NiS by the traditional methods, such as the coprecipitation and mechanical mixing methods, could not generate the sub-nanometer size of NiS with the tight contract between NiS and HNb3O8 nanosheet. As a result, the recombination of the photogenerated carriers is greatly suppressed on the sample prepared by our method. Furthermore, the overpotential of hydrogen evolution reaction could also be reduced significantly. Thus, the as-prepared composite exhibits a markedly improved photocatalytic H2 evolution activity as well as considerable stability. The optimal sample shows the H2 evolution rate of 1519.4 μmol g−1 h−1, which is about 17.4 times higher than that of the bare HNb3O8 nanosheets. The activity is also a magnitude higher than that of the sample prepared by a mechanical mixing method. Additionally, NiS/HNb3O8 prepared by the developed method shows a comparable activity as well as overpotential with Pt/HNb3O8, indicating an alternative to platinum. © 2018 Elsevier B.V.

Keyword:

Hydrogen Hydrogen evolution reaction Mixing Nanosheets Nickel Nickel sulfates Niobium compounds Photocatalysis Photocatalytic activity Self assembly Sulfur compounds

Community:

  • [ 1 ] [Xia, Yuzhou]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Minhou; 350116, China
  • [ 2 ] [Liang, Shijing]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Minhou; 350116, China
  • [ 3 ] [Liang, Shijing]Key Laboratory of Eco-materials Advanced Technology, Fuzhou University, Fujian Province University, Fuzhou; 350116, China
  • [ 4 ] [Liang, Shijing]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou; 350002, China
  • [ 5 ] [Wu, Ling]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Minhou; 350116, China
  • [ 6 ] [Wang, Xuxu]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Minhou; 350116, China

Reprint 's Address:

  • [liang, shijing]national engineering research center of chemical fertilizer catalyst, fuzhou university, fuzhou; 350002, china;;[liang, shijing]state key laboratory of photocatalysis on energy and environment, fuzhou university, fuzhou; minhou; 350116, china;;[liang, shijing]key laboratory of eco-materials advanced technology, fuzhou university, fujian province university, fuzhou; 350116, china

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Source :

Catalysis Today

ISSN: 0920-5861

Year: 2019

Volume: 330

Page: 195-202

5 . 8 2 5

JCR@2019

5 . 2 0 0

JCR@2023

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

30 Days PV: 0

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