Cu2O/TiO2 photocatalyst on glass substrate and preparation method and application of Cu2O/TiO2 photocatalyst

Abstract

The invention discloses a Cu2O / TiO2 photocatalyst on a glass substrate and a preparation method and application of the Cu2O / TiO2 photocatalyst. The Cu2O / TiO2 photocatalyst consists of the following components in percentage by weight: 0.1 to 50 percent of Cu2O and the balance of TiO2. The preparation method is simple; raw materials are single; the cost is relatively low; equipment cannot be corroded; the raw materials are readily available; the recycling rate is high; the Cu2O / TiO2 photocatalyst is relatively high in degrading rate when being applied to photocatalysis of methylene blue solution; secondary pollution can be avoided; and the Cu2O / TiO2 photocatalyst is suitable for industrial production and application and has a relatively good market prospect.

Description

technical field

[0001] The invention relates to a Cu on a glass substrate 2 O / TiO 2 Preparation method of visible light catalyst. Background technique

[0002] With the rapid development of social industrial production, a large number of pollutants continue to enter the natural world, bringing pollution to the living environment of human beings that cannot be ignored. Improving the living environment of human beings and eliminating organic pollutants in water is an urgent task for human beings. There are many traditional sewage treatment methods, but most of them have poor mineralization ability to organic pollutants and are easy to cause secondary pollution. At present, these waste water cannot be effectively treated. Nowadays, with the development requirements of society, many emerging water treatment methods have emerged. Among them, the heterogeneous photocatalytic oxidation method has become a current research hotspot because of its outstanding advantages such as bei...

Examples

Embodiment 1

[0042] Weigh 2.0g nano-TiO 2 The powder (mixed crystal type, the weight ratio of anatase and rutile is about 80 / 20) is put into a muffle furnace and roasted at 400°C for 3h. TiO 2 The particle size of the nanopowder is 20 nanometers;

[0043] Weigh 0.65g of copper acetate, dissolve it in 60mL of ethanol, add the pretreated nano-TiO 2 Powder, stirred, and then added 1.0g deionized water, 0.5g acetic acid and 6.0g polyvinyl alcohol. After ball milling for 24 hours, use a rotary evaporator to distill off excess ethanol at 50°C under reduced pressure to obtain Cu-containing 2+ TiO 2 Viscous slurry, the viscosity at 25°C is 6000cps;

[0044] The prepared Cu-containing 2+ TiO 2 The viscous slurry is coated on the cleaned glass substrate by scraping method, the coating thickness is 12 μm, and the coating size is 3 cm 2 . Then it was fired at 480°C for 1h, and the heating rate was 1°C / min to obtain CuO / TiO on the glass substrate. 2 Composite samples.

[0045] CuO / TiO 2 The...

Embodiment 2

[0048] Weigh 2.0g nano-TiO 2 The powder (mixed crystal type, the weight ratio of anatase and rutile is about 80 / 20) is put into a muffle furnace and roasted at 400°C for 3h. TiO 2 The particle size of the nanopowder is 20 nanometers;

[0049] Weigh 1.25 g of copper nitrate, dissolve it in 60 mL of ethanol, add the pretreated nano-TiO 2 Powder, stirred, and then added 1.0g deionized water, 0.5g acetic acid and 6.0g polyvinyl alcohol. After ball milling for 24 hours, use a rotary evaporator to distill off excess ethanol at 50°C under reduced pressure to obtain Cu-containing 2+ TiO 2 Viscous slurry, the viscosity at 25°C is 6000cps;

[0050] The prepared Cu-containing 2+ TiO 2 The viscous slurry is coated on the cleaned glass substrate by scraping method, the coating thickness is 8 μm, and the coating size is 3 cm 2 . Then it was fired at 480°C for 1h, and the heating rate was 1°C / min to obtain CuO / TiO on the glass substrate. 2 Composite samples.

[0051] CuO / TiO 2 Th...

technical field

[0001] The invention relates to a Cu on a glass substrate 2 O / TiO 2 Preparation method of visible light catalyst. Background technique

[0002] With the rapid development of social industrial production, a large number of pollutants continue to enter the natural world, bringing pollution to the living environment of human beings that cannot be ignored. Improving the living environment of human beings and eliminating organic pollutants in water is an urgent task for human beings. There are many traditional sewage treatment methods, but most of them have poor mineralization ability to organic pollutants and are easy to cause secondary pollution. At present, these waste water cannot be effectively treated. Nowadays, with the development requirements of society, many emerging water treatment methods have emerged. Among them, the heterogeneous photocatalytic oxidation method has become a current research hotspot because of its outstanding advantages such as bei...

Examples

Embodiment 1

[0042] Weigh 2.0g nano-TiO 2 The powder (mixed crystal type, the weight ratio of anatase and rutile is about 80 / 20) is put into a muffle furnace and roasted at 400°C for 3h. TiO 2 The particle size of the nanopowder is 20 nanometers;

[0043] Weigh 0.65g of copper acetate, dissolve it in 60mL of ethanol, add the pretreated nano-TiO 2 Powder, stirred, and then added 1.0g deionized water, 0.5g acetic acid and 6.0g polyvinyl alcohol. After ball milling for 24 hours, use a rotary evaporator to distill off excess ethanol at 50°C under reduced pressure to obtain Cu-containing 2+ TiO 2 Viscous slurry, the viscosity at 25°C is 6000cps;

[0044] The prepared Cu-containing 2+ TiO 2 The viscous slurry is coated on the cleaned glass substrate by scraping method, the coating thickness is 12 μm, and the coating size is 3 cm 2 . Then it was fired at 480°C for 1h, and the heating rate was 1°C / min to obtain CuO / TiO on the glass substrate. 2 Composite samples.

[0045] CuO / TiO 2 The...

Embodiment 2

[0048] Weigh 2.0g nano-TiO 2 The powder (mixed crystal type, the weight ratio of anatase and rutile is about 80 / 20) is put into a muffle furnace and roasted at 400°C for 3h. TiO 2 The particle size of the nanopowder is 20 nanometers;

[0049] Weigh 1.25 g of copper nitrate, dissolve it in 60 mL of ethanol, add the pretreated nano-TiO 2 Powder, stirred, and then added 1.0g deionized water, 0.5g acetic acid and 6.0g polyvinyl alcohol. After ball milling for 24 hours, use a rotary evaporator to distill off excess ethanol at 50°C under reduced pressure to obtain Cu-containing 2+ TiO 2 Viscous slurry, the viscosity at 25°C is 6000cps;

[0050] The prepared Cu-containing 2+ TiO 2 The viscous slurry is coated on the cleaned glass substrate by scraping method, the coating thickness is 8 μm, and the coating size is 3 cm 2 . Then it was fired at 480°C for 1h, and the heating rate was 1°C / min to obtain CuO / TiO on the glass substrate. 2 Composite samples.

[0051] CuO / TiO 2 Th...