Graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of ionic liquid

A graphite phase carbon nitride, ionic liquid technology, used in physical/chemical process catalysts, nanotechnology, nanotechnology and other directions, to achieve a wide range of selectivity, increase specific surface area, good controllability and universality.

Active Publication Date: 2014-04-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, using urea, a cheap chemical raw material, as the precursor of carbon nitride, introducing ionic liquid into the reaction system to promote g-C 3 N 4 The research work on the synthesis of nanosheets has not been reported yet

Method used

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  • Graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of ionic liquid
  • Graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of ionic liquid
  • Graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of ionic liquid

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Embodiment 1

[0025] Urea and 1-ethyl-3-methylimidazolium tetrafluoroborate (EmimBF 4 ) was dissolved in water, stirred at room temperature for 12h, evaporated to dryness, and ground. The solid powder was heat-treated in a muffle furnace at 550°C for 2 h to prepare graphitic carbon nitride nanosheets facilitated by ionic liquid synthesis.

Embodiment 2

[0027] Urea and 1-butyl-3-methylimidazolium tetrafluoroborate (BmimBF) with a mass ratio of 45:1 4 ) was dissolved in water, stirred at room temperature for 12h, evaporated to dryness, and ground. The solid powder was heat-treated in a muffle furnace at 550°C for 2 h to prepare graphitic carbon nitride nanosheets facilitated by ionic liquid synthesis.

Embodiment 3

[0029] Urea and 1-hexyl-3-methylimidazolium tetrafluoroborate (HmimBF) with a mass ratio of 40:1 4 ) was dissolved in water, stirred at room temperature for 12h, evaporated to dryness, and ground. The solid powder was heat-treated in a muffle furnace at 550°C for 2 h to prepare graphitic carbon nitride nanosheets facilitated by ionic liquid synthesis.

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Abstract

The invention discloses a preparation method and application of a graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of ionic liquid and belongs to the technical field of material preparation and photocatalysis. A graphite phase carbon nitride nanosheet material is formed by using room-temperature ionic liquid of urea and dialkyl imidazolium tetrafluoroborate as a precursor through high-temperature co-polymerization. The graphite phase carbon nitride prepared by the preparation method has a low-dimensional nanosheet layer microstructure and a suitable forbidden bandwidth and shows more efficient photocatalytic hydrogen production performance than that of conventional body phase carbon nitride under the visible light. The graphite phase carbon nitride nanosheet visible-light-induced photocatalyst synthesized by promotion of the ionic liquid is simple in synthetic process, is low in cost, has high photocatalytic efficiency, accords with the actual production requirement and has a wide application prospect in the field of photocatalysis.

Description

technical field [0001] The invention belongs to the technical field of material preparation and photocatalysis, and in particular relates to a preparation method and application of an ionic liquid-promoted synthesis of graphite-phase carbon nitride nanosheet visible light catalyst. Background technique [0002] Hydrogen is a clean energy transporter, and photocatalytic water splitting to produce hydrogen is a highly appraised method to solve energy problems. The core of photocatalysis research is to find photocatalysts with excellent performance, so the development of high-efficiency photocatalysts is the core topic of photocatalysis research. However, most of the photocatalysts currently studied have problems such as low solar energy utilization, easy deactivation, and high cost of use, which greatly restricts the application of photocatalysis in industrial production. Therefore, the development of efficient, stable, non-toxic, and cheap visible light catalysts is a core c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C01B21/082C01B3/04B82Y30/00B82Y40/00
CPCY02E60/36
Inventor 王心晨林珍珍
Owner FUZHOU UNIV
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