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Ultrathin two-dimensional nickel phosphide nano-sheets as well as preparation and application thereof to photocatalytic hydrogen production

A nanosheet, nickel phosphide technology, applied in physical/chemical process catalysts, hydrogen production, chemical instruments and methods, etc., to achieve high photocatalytic efficiency and the effect of being conducive to sustainable development

Active Publication Date: 2018-11-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although many supported and unsupported 2D Ni have been synthesized 2 P nanosheets or nanodisks, but ultrathin Ni 2 Controlled synthesis of P nanosheets remains challenging

Method used

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  • Ultrathin two-dimensional nickel phosphide nano-sheets as well as preparation and application thereof to photocatalytic hydrogen production
  • Ultrathin two-dimensional nickel phosphide nano-sheets as well as preparation and application thereof to photocatalytic hydrogen production
  • Ultrathin two-dimensional nickel phosphide nano-sheets as well as preparation and application thereof to photocatalytic hydrogen production

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of ultra-thin nickel hydroxide nanosheets:

[0031] Add 2.2 g of cetyltrimethylammonium bromide and 2.4 mmol of nickel acetate tetrahydrate into a mixed solution of 60 mL of ethanol and 11 mL of water, and ultrasonically stir the above mixture to form a homogeneous solution, and then stir for 1 h; then The solution was transferred into a polytetrafluoroethylene (PTFE)-lined 100 mL stainless steel autoclave and heated at 180 °C for 24 h. The reactor was automatically cooled to room temperature and the final light green product was collected by centrifugation, washed and then lyophilized.

[0032] The photocatalytic hydrogen production reaction was carried out in a Pyrex top irradiation vessel connected to a glass-enclosed gas circulation system. A 300 W xenon lamp (420 nm ≤ λ) (PLS-SXE300C, Perfectlight) equipped with a 420 nm cut-off filter was used as a visible light source. The irradiation area is controlled to 18.1 cm −2 . Typically, 20 mg of the ...

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Abstract

The invention discloses an ultrathin two-dimensional nickel phosphide nano-sheet material as well as preparation and application thereof to photocatalytic hydrogen production. The preparation comprises the following steps: firstly, preparing an ultrathin nickel hydroxide (Ni(OH)2) precursor through a solvothermal method; dispersing the synthetic (Ni(OH)2 on single-layer graphene (FGR) through an electrostatic self-assembling method; finally, synthesizing an ultrathin two-dimensional Ni2P nano-material through a gas-phase and solid-phase phosphatization method. Under the irradiation of visiblelight, the catalyst has good eosin Y sensitized water decomposition and hydrogen production activity and stability. The preparation method is simple and can realize batch production; reaction conditions are moderate, and efficient separation and recycling, and repeated utilization can be realized; a compound catalytic material has important actual application value in the technical field of material preparation and the aspect of water decomposition and hydrogen production; sustainable development of environments and energy sources is facilitated.

Description

technical field [0001] The invention belongs to the field of catalyst preparation and sustainable development of environment and energy, and in particular relates to an ultra-thin two-dimensional nickel phosphide nanosheet material and its preparation and application of photocatalytic hydrogen production. Background technique [0002] Energy crisis and environmental pollution are two major social problems facing mankind at present. Hydrogen production by photolysis of water is considered to be an ideal way to alleviate energy and environmental problems, and has received extensive attention and research. Selecting suitable catalytic materials and designing reasonable structures is an effective strategy to improve the efficiency of hydrogen production by photolysis of water. Ultrathin two-dimensional (2D) transition metal phosphides (TMPs) offer new options for energy conversion and storage with unique electrical, mechanical, and catalytic properties due to their ultrahigh sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J35/00B01J35/02C01B3/04
CPCC01B3/042B01J27/1853C01B2203/1058C01B2203/0277B01J35/00B01J35/30B01J35/39Y02E60/36
Inventor 徐艺军李少海唐紫蓉
Owner FUZHOU UNIV
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