Iron phosphide-based photocatalyst and synthesis method thereof

An iron phosphide-based, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc.

Inactive Publication Date: 2017-09-05
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But finding excellent photocatalytic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] A total of 0.85g Fe(NO 3 ) 3 ·6H 2 O and (NH 4 ) 2 HPO 4 (Fe:P molar ratio is 1:1) was dissolved in 80mL deionized water, stirred for 30min, evaporated to dryness in a water bath at 95°C, ground the evaporated material, put it in a crucible, and heated it at a rate of 10°C / min to Keep at 500°C for 4h to obtain the precursor. Grind the precursor and put it in a porcelain boat, feed hydrogen at a rate of 300mL / min, raise the temperature to 650°C at a rate of 1°C / min, and keep it for 2h. After the reaction is over, cool it naturally, and store the iron phosphide sample in a vacuum in the dryer.

Embodiment approach 2

[0015] Add a total of 1.13mg of iron phosphide and cadmium sulfide (mass ratio of iron phosphide is 1-50%) into 40mL of deionized water, then add 10mL of L-lactic acid, and then vacuumize with a circulating water pump for 30min after sealing. 10 5WLed lamps are placed around the solution, and the solution generates hydrogen gas under stirring, and the generated hydrogen gas is analyzed by gas chromatography.

Embodiment approach 3

[0017] The Fe:P molar ratio in Embodiment 1 is changed from 1:1 to 1:0.5, and other conditions remain unchanged.

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PUM

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Abstract

The invention relates to a photocatalytic material and a preparation method thereof and belongs to the field of inorganic photocatalytic materials. The photocatalytic material is prepared from iron phosphide and a mixture of the iron phosphide and other photocatalytic materials. The photocatalytic material prepared by the preparation method has photocatalytic activity in a wavelength range of 400nm to 1000nm; the photocatalytic material can be radiated by visible light or natural light and be subjected to photocatalytic hydrolysis to generate hydrogen.

Description

technical field [0001] The invention relates to a novel photocatalytic material. [0002] The present invention also relates to a preparation method of the above-mentioned photocatalytic material. [0003] The present invention also relates to the use of the above-mentioned photocatalytic material. Background technique [0004] The technology of photolysis of water to produce hydrogen has the advantages of energy saving, cleanliness, and no pollution, so it has become a new hydrogen energy preparation method. But finding excellent photocatalytic materials is still a great challenge. It has recently been found that sulfides, nitrides, carbides, and phosphides have a high ability to photolyze water to produce hydrogen. Phosphides, in particular, are sensitive to light, stable under acid-base conditions, and have intrinsic properties as photocatalytic materials. Moreover, phosphides can replace noble metals as co-catalysts to generate hydrogen under light radiation. This pa...

Claims

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Application Information

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IPC IPC(8): B01J27/185C01B3/04C01B25/08
CPCB01J27/1853B01J35/004B01J37/18C01B3/042C01B25/08C01B2203/1047Y02E60/36
Inventor 宋立民鲍亭康杏思
Owner TIANJIN POLYTECHNIC UNIV
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