Preparation method of titanium dioxide biomorphic material with high catalytic activity

Abstract

The invention relates to a preparation method of a titanium dioxide biomorphic material with high catalytic activity. The method comprises the following steps: preparing a diluted hydrochloric acid solution, adding a biomass raw material, carrying out suction filtration, repeatedly conducting cleaning with deionized water until a pH value is 7, and carrying out drying at 50-60 DEG C; dissolving tetrabutyl titanate into absolute ethyl alcohol, and adding acetylacetone; conducting stirring in a magnetic stirrer to obtain a mixed solution which is marked as a solution A; dissolving triethylamineinto absolute ethyl alcohol and marking the formed solution as a solution B; pouring the solution B into the solution A until the pH value of the mixed solution is adjusted to 7.5+ / -0.5, and soaking abiomass raw material into a prepared alcoholic solution of TiO2; and carrying out drying and sintering, putting the biomass raw material impregnated with the TiO2 alcoholic solution into a muffle furnace, and carrying out sintering in the air to obtain the TiO2 biomorphic material. The method has the advantages of rich template materials, economy, environmental protection, simple process, diversetemplate compositions and structures and the like, and has important research significance.

Description

technical field

[0001] The present invention relates to a kind of titanium dioxide (TiO2) with high catalytic activity 2 ) preparation method of the remains material. It belongs to the technical field of material preparation. Background technique

[0002] In recent years, with the rapid development of my country's economy, water pollution problems such as industrial wastewater and chemical raw materials have become more prominent, so water treatment technology has attracted more and more attention. Water treatment methods mainly include membrane separation, sedimentation and chemical oxidation, etc. [1] , but these methods have certain difficulties in dealing with refractory organic pollutants, and it is difficult to achieve satisfactory results. Photocatalyst degradation technology uses sunlight to make the catalyst produce hydroxyl radicals with strong oxidation ability, so as to oxidize organic pollutants in water into non-toxic products. It has the advantages of high ...

Examples

Embodiment 1

[0039] Rice husk—TiO 2

[0040] The experimental drugs used in the experiment were all analytically pure.

[0041] (1) acid pretreatment

[0042] Acid treatment: configure concentrated hydrochloric acid (mass fraction: 36.5%) into a dilute hydrochloric acid solution with a mass fraction of 1%, add rice husks to the prepared solution, install an oil bath reflux device, heat to boiling and reflux for 3 hours, then cool to room temperature , filtered with suction, washed repeatedly with deionized water until the pH value is neutral (PH=7±0.1), and dried at 50° C. for 24 hours.

[0043] (2) Preparation of TiO 2 Alcoholic solution

[0044] Tetrabutyl titanate (Ti(OBu) 4 ) was dissolved in absolute ethanol, and a tetrabutyl titanate ethanol solution with a volume fraction of 6.3% was prepared, and then acetylacetone was added according to the volume ratio tetrabutyl titanate ethanol solution: acetylacetone=128:0.4, and stirred in a magnetic stirrer for 20 min , and the obtained ...

Embodiment 2

[0052] Begonia leaves—TiO 2 Material

[0053] Using crabapple leaves as natural biological templates to prepare residual TiO by solution impregnation method 2 .

[0054] The experimental drugs used in the experiment were all analytically pure.

[0055] (1) Pretreatment

[0056] Weigh three parts of crabapple leaves that are cleaned and dried in a vacuum drying oven, each part of 10g.

[0057] Acid treatment: configure concentrated hydrochloric acid (mass fraction: 36.5%) into a dilute hydrochloric acid solution with a mass fraction of 2%, add a portion of crabapple leaves to the dilute hydrochloric acid, install an oil bath reflux device, heat to boiling and reflux for 2 hours and cool to room temperature, Suction filtration, repeated washing with deionized water until the pH value is neutral (PH=7±0.1), and drying in a vacuum oven at 55° C. for 16 hours.

[0058] (2) Preparation of TiO 2 Alcoholic solution

[0059] Tetrabutyl titanate (Ti(OBu) 4 ) into absolute ethano...

Embodiment 3

[0067] Hemp fiber—TiO 2

[0068] The experimental drugs used in the experiment were all analytically pure.

[0069] (1) acid pretreatment

[0070] Use concentrated hydrochloric acid (mass fraction: 36.5%) to configure a dilute hydrochloric acid solution with a mass fraction of 3%, add hemp fiber in the prepared dilute hydrochloric acid solution, install an oil bath reflux device, heat to boiling, and cool to room temperature after reflux for 1h , after repeated suction filtration, washed with deionized water until the pH value is neutral (PH=7±0.1), and dried in a blast drying oven at 60° C. for 14 hours.

[0071] (2) Configure Ti(OBu) 4 Alcoholic solution

[0072] Tetrabutyl titanate (Ti(OBu) 4 ) was dissolved in absolute ethanol, and a tetrabutyl titanate ethanol solution with a volume fraction of 7.7% was prepared, and then acetylacetone was added according to the volume ratio tetrabutyl titanate ethanol solution: acetylacetone=128:0.6, and stirred in a magnetic stirre...

technical field

[0001] The present invention relates to a kind of titanium dioxide (TiO2) with high catalytic activity 2 ) preparation method of the remains material. It belongs to the technical field of material preparation. Background technique

[0002] In recent years, with the rapid development of my country's economy, water pollution problems such as industrial wastewater and chemical raw materials have become more prominent, so water treatment technology has attracted more and more attention. Water treatment methods mainly include membrane separation, sedimentation and chemical oxidation, etc. [1] , but these methods have certain difficulties in dealing with refractory organic pollutants, and it is difficult to achieve satisfactory results. Photocatalyst degradation technology uses sunlight to make the catalyst produce hydroxyl radicals with strong oxidation ability, so as to oxidize organic pollutants in water into non-toxic products. It has the advantages of high ...

Examples

Embodiment 1

[0039] Rice husk—TiO 2

[0040] The experimental drugs used in the experiment were all analytically pure.

[0041] (1) acid pretreatment

[0042] Acid treatment: configure concentrated hydrochloric acid (mass fraction: 36.5%) into a dilute hydrochloric acid solution with a mass fraction of 1%, add rice husks to the prepared solution, install an oil bath reflux device, heat to boiling and reflux for 3 hours, then cool to room temperature , filtered with suction, washed repeatedly with deionized water until the pH value is neutral (PH=7±0.1), and dried at 50° C. for 24 hours.

[0043] (2) Preparation of TiO 2 Alcoholic solution

[0044] Tetrabutyl titanate (Ti(OBu) 4 ) was dissolved in absolute ethanol, and a tetrabutyl titanate ethanol solution with a volume fraction of 6.3% was prepared, and then acetylacetone was added according to the volume ratio tetrabutyl titanate ethanol solution: acetylacetone=128:0.4, and stirred in a magnetic stirrer for 20 min , and the obtained ...

Embodiment 2

[0052] Begonia leaves—TiO 2 Material

[0053] Using crabapple leaves as natural biological templates to prepare residual TiO by solution impregnation method 2 .

[0054] The experimental drugs used in the experiment were all analytically pure.

[0055] (1) Pretreatment

[0056] Weigh three parts of crabapple leaves that are cleaned and dried in a vacuum drying oven, each part of 10g.

[0057] Acid treatment: configure concentrated hydrochloric acid (mass fraction: 36.5%) into a dilute hydrochloric acid solution with a mass fraction of 2%, add a portion of crabapple leaves to the dilute hydrochloric acid, install an oil bath reflux device, heat to boiling and reflux for 2 hours and cool to room temperature, Suction filtration, repeated washing with deionized water until the pH value is neutral (PH=7±0.1), and drying in a vacuum oven at 55° C. for 16 hours.

[0058] (2) Preparation of TiO 2 Alcoholic solution

[0059] Tetrabutyl titanate (Ti(OBu) 4 ) into absolute ethano...

Embodiment 3

[0067] Hemp fiber—TiO 2

[0068] The experimental drugs used in the experiment were all analytically pure.

[0069] (1) acid pretreatment

[0070] Use concentrated hydrochloric acid (mass fraction: 36.5%) to configure a dilute hydrochloric acid solution with a mass fraction of 3%, add hemp fiber in the prepared dilute hydrochloric acid solution, install an oil bath reflux device, heat to boiling, and cool to room temperature after reflux for 1h , after repeated suction filtration, washed with deionized water until the pH value is neutral (PH=7±0.1), and dried in a blast drying oven at 60° C. for 14 hours.

[0071] (2) Configure Ti(OBu) 4 Alcoholic solution

[0072] Tetrabutyl titanate (Ti(OBu) 4 ) was dissolved in absolute ethanol, and a tetrabutyl titanate ethanol solution with a volume fraction of 7.7% was prepared, and then acetylacetone was added according to the volume ratio tetrabutyl titanate ethanol solution: acetylacetone=128:0.6, and stirred in a magnetic stirre...

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