Photocatalytic material with nano TiO2 loaded on graphene-foamed nickel and preparation method of photocatalytic material

Abstract

The invention discloses a photocatalytic material with nano TiO2 loaded on graphene-foamed nickel and a preparation method of the photocatalytic material. The foamed nickel is taken as a base, a graphene film layer is deposited on the foamed nickel to form a graphene-foamed nickel composite carrier, a TiO2 sol film layer is formed on the graphene-foamed nickel composite carrier, the graphene is combined with the foamed nickel to serve as an organic carrier loaded with the nano TiO2, a three-layer structure is formed, the carrier is firmly loaded with the nano TiO2, and the photocatalytic activity of the TiO2 is greatly improved. An electrophoretic deposition method is used and a polyurethane foam serves as a base to prepare the foamed nickel with high specific surface area, the foamed nickel is then loaded with the graphene through the electrophoretic deposition method, the grapheme film layer is formed, a sol-gel method is used, no binder is used, the nano TiO2 with higher photocatalytic activity is loaded on the graphene-foamed nickel composite carrier, the whole process is simple in operation, the period is short, and the manufacturing cost is low.

Description

technical field

[0001] The invention relates to the technical field of nanocomposite materials, in particular to a graphene-foam nickel loaded nano TiO 2 Photocatalytic materials and their preparation methods. Background technique

[0002] Nano-TiO 2 Powder has been proved to be an efficient, non-toxic and stable photocatalyst material in this year's research, and it has good photocatalytic activity in both liquid phase reaction and gas phase reaction, but due to the powdery nano TiO 2 The particles are fine, difficult to recycle, and the loss of active components of the catalyst is large, which is not conducive to the regeneration and reuse of the catalyst, which brings a lot of tedious operations to the actual production, and a lot of extra costs are invested to maintain the use of the catalyst to meet the production needs.

[0003] Use a solid carrier to load the photocatalyst on the carrier, so that the photocatalyst is immobilized, which can solve the problem of cata...

Examples

Embodiment 1

[0029] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0030] Polyurethane foam matrix with a pore size of 200 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 20 minutes, and then dried to obtain the foamed nickel; the photographs of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 96%, a pore diameter o...

Embodiment 2

[0036] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0037] Polyurethane foam matrix with a pore size of 400 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4 The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 30 minutes, and then dried to obtain the foamed nickel; the photos of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 97.5%, a pore diameter of ...

Embodiment 3

[0043] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0044] Polyurethane foam matrix with a pore size of 400 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4 The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 40 minutes, and then dried to obtain foamed nickel; the photographs of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 98.1%, a pore diameter of...

technical field

[0001] The invention relates to the technical field of nanocomposite materials, in particular to a graphene-foam nickel loaded nano TiO 2 Photocatalytic materials and their preparation methods. Background technique

[0002] Nano-TiO 2 Powder has been proved to be an efficient, non-toxic and stable photocatalyst material in this year's research, and it has good photocatalytic activity in both liquid phase reaction and gas phase reaction, but due to the powdery nano TiO 2 The particles are fine, difficult to recycle, and the loss of active components of the catalyst is large, which is not conducive to the regeneration and reuse of the catalyst, which brings a lot of tedious operations to the actual production, and a lot of extra costs are invested to maintain the use of the catalyst to meet the production needs.

[0003] Use a solid carrier to load the photocatalyst on the carrier, so that the photocatalyst is immobilized, which can solve the problem of cata...

Examples

Embodiment 1

[0029] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0030] Polyurethane foam matrix with a pore size of 200 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 20 minutes, and then dried to obtain the foamed nickel; the photographs of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 96%, a pore diameter o...

Embodiment 2

[0036] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0037] Polyurethane foam matrix with a pore size of 400 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4 The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 30 minutes, and then dried to obtain the foamed nickel; the photos of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 97.5%, a pore diameter of ...

Embodiment 3

[0043] Graphene-Ni Foam Loaded Nano-TiO 2 Preparation of photocatalytic materials

[0044] Polyurethane foam matrix with a pore size of 400 μm, weighing about 80 mg, was sprayed with H 2 Cr 2 o 7 / H 2 SO 4 / H 3 PO 4 After the mixture with a mass ratio of 5:3:1 is pretreated, it is immersed in 20g / L PdCl 2 solution, at room temperature for activation treatment; then put the polyurethane foam matrix into the solution containing 20g / LNiSO 4 , 30g / LNa 3 Cyt, 45g / LNa 3 PO 4 The electroless plating reaction is carried out in the plating solution, and finally, the polyurethane foam is used as the cathode, and the platinum electrode is used as the anode for electroplating for 40 minutes, and then dried to obtain foamed nickel; the photographs of the scanning electron microscope and the transmission electron microscope show that the foamed nickel has a three-dimensional network structure, and the pores are The interconnected pores have a porosity of 98.1%, a pore diameter of...