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Process for preparing nano metal sulfide as physically developing nucleus

A metal sulfide and nano-metal technology, applied in photography, photography technology, semiconductor/solid-state device manufacturing, etc., can solve problems such as high cost, cumbersome operation, and influence on diffusion speed, and achieve high stability, high catalytic activity, and improved The effect of ink acceptance and runnability

Inactive Publication Date: 2004-12-15
ZHONGKEYIN IND SHANTOU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome defects such as high cost, cumbersome operation, and influence on diffusion speed when synthesizing functional polymers, and provide a method for preparing a nano-metal sulfide physical development core that is easy to operate and reduces costs

Method used

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  • Process for preparing nano metal sulfide as physically developing nucleus
  • Process for preparing nano metal sulfide as physically developing nucleus
  • Process for preparing nano metal sulfide as physically developing nucleus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0039] Preparation of palladium sulfide PdS core: the preparation concentration is 2.5×10 -2 mol / L palladium chloride (PdCl 2 ) solution 40ml, the injection concentration is 3.4×10 at a stirring speed of 1000 rev / min at 25°C -2 mol / L of sodium sulfide (Na 2 S) 35ml of solution, and then add 400ml of deionized water to produce colloidal nano-PdS core. The size of the nano-PdS core was determined by an electron microscope, and the particle diameter was 10-20nm. The nanoscale PdS solution can be placed for 24 hours without any aggregation or sedimentation, and is quite stable. like figure 1 shown. The following plate-making method is carried out by comparative example 1. The printing results are shown in Table 2.

Embodiment 4

[0041] Silver sulfide (Ag 2S) Preparation of nucleus: the same as the method prepared in Example 3, put into the reaction pot with 400ml deionized water, and the addition concentration is 2.50×10 -2 mol / L silver nitrate (AgNO 3 ) solution 40ml, at a stirring speed of 500 rpm, at 25°C, gradually inject a concentration of 1.20×10 -2 mol / L of sodium sulfide (Na 2 S) solution 50ml produces colloidal nano-Ag 2 S nucleus. Determination of Nano Ag by Electron Microscope 2 The size of the S core, the particle diameter is 3-10nm. like figure 2 shown. The rest of the plate preparation and development processing are the same as in Comparative Example 1, and the experimental data obtained are shown in Table 2.

Embodiment 5

[0043] Preparation of cobalt sulfide (CoS) core: the preparation concentration is 1.58×10 -2 mol / L cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) solution 50ml, at a stirring speed of 700 rpm, at a temperature of 25°C, gradually inject a concentration of 1.25 × 10 -2 mol / L of sodium sulfide (Na 2 S·9H 2 O) 65ml of solution, then add 400ml of ionized water, continue to stir for 15 minutes after adding, produce colloidal nano-CoS core, its diameter is 5-15nm. Plate preparation and development processing were carried out completely according to the method of Comparative Example 1. The experimental data obtained can be seen in Table 2.

[0044] physical development kernel

medium

ink receptivity

(open)

Durability

Remark

Example 1 (PdS)

gelatin

10

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Compare

Example 2 (CoS)

gelatin

15

***

Compare

Example 3 (PdS)

no media

3

*****

this invention ...

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Abstract

A process for preparing nano-class physical developing kernels of metal sulfide includes proportinoally mixing the aqueous solution of metal salt with the aqueous solution of sodium sulfide, adding deionized water, and stirring at 500-1000 rpm. Its advantages are high stability, high catalytic activity, and high ink receptability.

Description

technical field [0001] The invention belongs to the preparation method of the physical development nucleus in the silver salt diffusion transfer system, in particular to the preparation method of the physical development nucleus of nanometer metal sulfide. Background technique [0002] Silver salt diffusion transfer reversal principle (abbreviated as DTR principle) in "Photographic Silver Halide Diffusion Processes" written by A. Rott and E. Weyde, by Andr. Rott and Edith Weyde, The Focal Press , London and New York, 1972) have been described in a book. When the silver halide photosensitive layer is exposed, it will form a latent image, which will be chemically developed by the developer and reduced to silver to form a negative image; at the same time, the unexposed silver halide will be quickly dissolved by the silver complexing agent in the developer to form silver. The complex ions are diffused and transferred to the image receiving layer, and under the catalysis of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03C8/06G03C8/28G03F7/07G03F7/26
Inventor 陈萍盛丽琴于淑芳
Owner ZHONGKEYIN IND SHANTOU CITY