Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of metallic ion coupled dye sensitization photocatalyst and optoelectronic pole

A metal ion, photocatalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the limitation of light harvesting efficiency photocatalyst active photoelectrode photoelectric conversion Efficiency improvement and other issues, to achieve the effect of improved transfer, improved harvesting efficiency, and improved charge efficiency

Inactive Publication Date: 2011-10-05
NANCHANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption of this dye is still monolayer adsorption, which limits the light harvesting efficiency, the activity of the photocatalyst and the improvement of the photoelectric conversion efficiency of the photoelectrode.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 0.50g nano-TiO 2 (KY-TiO 2 -01, anatase type, average particle size ≤ 20nm, specific surface = 124m 2 / g, content ≥99.5%, Shanghai Kangyu Industrial Co., Ltd.), add 20ml 5.0×10 -3 mol / 1 Fe(NO 3 ) 3 Aqueous solution, add 0.10mmol water-soluble Eosin Y dye (2,4,5,7-tetrabromofluorescein sodium salt) solid under stirring, stir for 6-12h, filter with suction, and dry at 80-100°C.

[0023] Prepared photocatalyst is in the presence of triethanolamine, uses the metal halide lamp of 400W as light source, removes ultraviolet and infrared light (light intensity is 18.05mw / cm2) with 420nm filter plate and water cooling jacket 2 ), the light time is 2h, with H 2 PtCl 6 The amount of Pt loaded in situ is 1.0wt%, and the quantum efficiency of photocatalytic hydrogen production is 12.8% (without Fe 3+ In the presence of pure TiO prepared under the same conditions 2 Adsorption of Eosin Y (replacing the above Fe(NO with distilled water) 3 ) 3 aqueous solution) with a maximum q...

Embodiment 2

[0025] 0.50g nano-TiO 2 (KY-TiO 2 -01, anatase type, average particle size ≤ 20nm, specific surface = 124m 2 / g, content ≥99.5%, Shanghai Kangyu Industrial Co., Ltd.), add 20ml 1.0×10 -2 mol / l Fe(NO 3 ) 3 Aqueous solution, add 0.20mmol water-soluble Eosin Y dye (2,4,5,7-tetrabromofluorescein sodium salt) solid under stirring, stir for 6-12h, filter with suction, and dry at 80-100°C.

[0026] Prepared photocatalyst is in the presence of triethanolamine, uses the metal halide lamp of 400W as light source, removes ultraviolet and infrared light (light intensity is 18.05mw / cm2) with 420nm filter plate and water cooling jacket 2 ), the light time is 2h, with H 2 PtCl 6 The amount of Pt loaded in situ is 1.0wt%, and the quantum efficiency of photocatalytic hydrogen production is 19.0%.

Embodiment 3

[0028] 0.50g nano-TiO 2 (KY-TiO 2 -01, anatase type, average particle size ≤ 20nm, specific surface = 124m 2 / g, content ≥99.5%, Shanghai Kangyu Industrial Co., Ltd.), add 20ml 5.0×10 -3 mol / l Fe(NO 3 ) 3 To the ethanol solution, add 0.10 mmol of water-soluble Eosin Y dye (2,4,5,7-tetrabromofluorescein sodium salt) solid under stirring, stir for 6-12 hours, filter with suction, and dry at 80-100°C to obtain a photocatalyst.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a manufacturing method of a dye sensitized photocatalyst and a photoelectrode coupled by metallic ions. Used materials thereof comprise semiconductor or insulator substrate (sensitized substrate), dyes of multi-coordination atom and metal ions. The metal ions couple the semiconductor or the insulator with the dyes, and couple the dyes by coordination function to form three-dimensional, bi-dimensional or one-dimensional polymers with a multilayer structure. Merits of the invention comprise: utilization per cent of visible light of the manufactured photocatalyst and photoelectrode is improved, and efficiency for transferring electric charges to catalytic materials and surface of photoelectrode is further improved.

Description

technical field [0001] The invention relates to a preparation method of a dye-sensitized photocatalyst and a photoelectrode, in particular to a preparation method of a metal ion coupled dye-sensitized photocatalyst and a photoelectrode. Background technique [0002] Photocatalysis is one of the best ways to use solar energy to solve energy shortage and environmental pollution. TiO 2 , ZnO and other wide-bandgap semiconductors as photocatalysts have good application prospects in photocatalytic water splitting to produce hydrogen, degrade pollutants, and self-cleaning. However, these wide bandgap semiconductors exhibit photocatalytic activity and photoelectric conversion efficiency only under UV light irradiation. In sunlight, ultraviolet light only accounts for about 5%, while visible light accounts for about 45%. Visible light activity of wide bandgap semiconductors by dye sensitization is one of their most important modification methods. Visible light sensitization of T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L51/48H01G9/20H01M14/00B01J31/02B01J8/00
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 李越湘郭苗苗彭邵琴
Owner NANCHANG UNIV