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Chemical depositing Ni-P-nano titanic oxide photocatalysis composite coating plating solution and plating method thereof

A technology of nano-titanium dioxide and chemically deposited nickel, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of easy agglomeration recovery, photocatalyst deactivation, etc., and achieve the effect of overcoming agglomeration

Inactive Publication Date: 2010-09-01
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve nano titanium dioxide TiO 2 Problems such as easy deactivation, easy agglomeration and difficult recovery of photocatalysts exist. The present invention provides a plating solution for chemically deposited nickel-phosphorus-nano-titanium dioxide photocatalytic composite coating and a plating method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of Nickel-Phosphorus Ni-P / Nano Titanium Dioxide TiO on No. 45 Steel Substrate (30×20×3mm) 2 Chemical composite coating.

[0027] Electroless deposition of nickel-phosphorus-nano-titanium dioxide photocatalytic composite coating bath includes the following chemical raw materials:

[0028] Nickel sulfate 25g / L

[0029] Sodium hypophosphite 24g / L

[0030] Lactic acid 30ml / L

[0031] Propionic acid 3g / L

[0032] Boric acid 4.5g / L

[0033] Lead acetate 2mg / L

[0034] Sodium dodecylbenzenesulfonate 100mg / L

[0035] Nano Titanium Dioxide TiO 2 8g / L,

[0036] Distilled water 1L.

[0037] The plating process that adopts above-mentioned composite coating bath comprises following operation steps:

[0038] a. Preparation of nickel-phosphorus (Ni-P) alloy plating solution

[0039] According to above-mentioned formula, except titanium dioxide and lead acetate, get other chemical raw materials and be dissolved in 900mL distilled water, prepare and obtain ele...

Embodiment 2

[0052] 1. The composition of the plating solution:

[0053] Nickel sulfate 15g / L

[0054] Sodium hypophosphite 24g / L

[0055] Lactic acid 30ml / L

[0056] Propionic acid 3g / L

[0057] Boric acid 4.5g / L

[0058] Lead acetate 2mg / L

[0059] Sodium dodecylbenzenesulfonate 50mg / L

[0060] Nano Titanium Dioxide TiO 2 2g / L

[0061] Distilled water 1L.

[0062] 2, process condition of the present invention

[0063] Stirring speed 100r / min

[0064] Temperature 75°C

[0065] pH 4.0

[0066] Plating time 2h.

[0067] 3. Verification result:

[0068] Ni-P-Nano TiO 2 Nano-TiO in Chemical Composite Coating 2 The compounding amount is 4.7wt%.

[0069] The microhardness of nickel-phosphorus (Ni-P) electroless coating is 542.4Hv before heat treatment, and 946.7Hv after heat treatment at 400℃; Ni-P-nano TiO 2 The microhardness of the chemical composite coating was 606.7Hv before heat treatment, and 1018.2Hv after heat treatment at 400°C.

[0070] The wear amount of nickel-...

Embodiment 3

[0074] 1. Composition of plating solution

[0075] Nickel sulfate 30g / L

[0076] Sodium hypophosphite 24g / L

[0077] Lactic acid 30ml / L

[0078] Propionic acid 3g / L

[0079] Boric acid 4.5g / L

[0080] Lead acetate 2mg / L

[0081] Sodium dodecylbenzenesulfonate 200mg / L

[0082] Nano-TiO 2 8g / L

[0083] Distilled water 1L.

[0084] 2, process condition of the present invention

[0085] Stirring speed 300r / min

[0086] Temperature 90°C

[0087] pH 5.5

[0088] Plating time 2h.

[0089] 3. Verification result:

[0090] Ni-P-Nano TiO 2 Nano-TiO in Chemical Composite Coating 2 The compounding amount is 9.32wt%.

[0091] The microhardness of nickel-phosphorus (Ni-P) electroless coating is 542.4Hv before heat treatment, and 946.7Hv after heat treatment at 400℃; Ni-P-nano TiO 2 The microhardness of the chemical composite coating was 627.1Hv before heat treatment, and 1102.3Hv after heat treatment at 400°C.

[0092] The wear amount of nickel-phosphorus (Ni-P...

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Abstract

The invention relates to a chemical Ni-P-nano-TiO2 depositing photo-catalysis composite coating plating solution and a plating method thereof, aiming at solving the problems that the nano-TiO2 photo-catalyst is easy to be deactivated and agglomerate and is difficult to be recovered, and the like. The nano-TiO2 photo-catalytic composite coating plating solution comprises the chemical raw materialsas follows: nickel sulfate, sodium hypophosphite, lactic acid, propionic acid, boric acid, nano-TiO2, lead acetate and sodium dodecyl benzene sulfonate. The process conditions for plating a workpieceare defined as follows: the pH value of the composite coating solution is 4.0-5.5; the plating time is 2 hours at the temperature of 75-90 DEG C. On the basis of the particularity of the nano-particle, the prepared composite coating has the functions of anti-corrosion, anti-abrasion, photo-catalysis, self-degradation and recycling. The nano-TiO2 is introduced in chemical plating solution to co-deposit with Ni-P substrate so as to prepare the Ni-P-nano TiO2 chemical composite coating and provide a feasible loading method for the practical application of the nano-TiO2.

Description

technical field [0001] The invention relates to a surface chemically deposited nickel-phosphorus-titanium dioxide (Ni-P-TiO 2 ) composite coating preparation method, specifically the nickel-phosphorus-titanium dioxide Ni-P-TiO with excellent wear resistance, corrosion resistance and photocatalytic properties prepared by the chemical plating method 2 Functional coating. Background technique [0002] Nano Titanium Dioxide TiO 2 Under the irradiation of light, the synthesis of compounds is promoted or the degradation of compounds is promoted by converting light energy into chemical energy. Nano Titanium Dioxide TiO 2 The photocatalytic degradation of photocatalytic materials is an efficient deep oxidation process. Its advantages are: no photocorrosion after illumination, good acid and alkali resistance, high temperature and high pressure resistance, stable chemical properties, and non-toxic to organisms; abundant sources, energy The gap is large, the potential potential for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36B01J21/06
Inventor 黄新民吴玉程舒霞郑玉春单传丽
Owner HEFEI UNIV OF TECH