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Synthetic method of biological structural carbon/cerium oxide artificial photosynthesis material

A biological structure and photosynthetic material technology, applied in hydrogen/synthesis gas production, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of titanium dioxide without visible light response ability, low repeated utilization rate, and limited service life, etc. Achieve the effect of wide application value, improve utilization rate and enhance effect

Inactive Publication Date: 2017-04-19
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Hydrogen production by electrolysis of water is the most common method of hydrogen production, but it has many disadvantages: first, solid polymer electrolyte membrane is the core part of hydrogen production by electrolysis of water, but the current domestic development of solid polymer electrolyte membrane is limited, Most rely on a few foreign companies, so the cost of hydrogen production is relatively high; second, the membrane as a catalyst has a limited service life and a low repeated utilization rate; third, in the actual operation process, it needs to consume a lot of electric energy, etc.
[0004] After searching the literature of the prior art, there are some patent reports on the preparation of visible light response, such as Chinese patent application number 201310102897.4, titled "Preparation method of visible light catalyst with multi-component porous hierarchical structure". The membrane is used as a template to synthesize a multi-component porous hierarchical structure visible light catalyst; Chinese patent application number 201310071212.4, titled "a cerium oxide / titania nanobelt surface heterogeneous structure photocatalyst with capture-catalysis performance and its preparation method", the The patent synthesized a ceria / titania nanobelt surface heterostructure photocatalyst with visible light response, but the substrate used in the above patent is still titanium dioxide without visible light response ability

Method used

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  • Synthetic method of biological structural carbon/cerium oxide artificial photosynthesis material

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Experimental program
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Effect test

Embodiment 1

[0018] The synthetic method of biological structure carbon / cerium oxide artificial photosynthetic material comprises the following steps:

[0019] The first step: pretreatment of leaves: Bamboo bamboo leaves are soaked in a mixture of 5% dilute hydrochloric acid and 95% absolute ethanol and distilled water with a volume ratio of 3:1 for 12 hours, washed with distilled water after taking them out, and then Soak for 12 hours with 5% dilute hydrochloric acid and 95% mixture of absolute ethanol and distilled water with a volume ratio of 3:1;

[0020] Step 2: Prepare 1 L of cerium nitrate aqueous solution with a concentration of 0.1 mol / L. After stirring and dissolving, soak 10 g of Bamboo bamboo leaves that have been pretreated in the solution for 24 hours, take it out, wash it, and dry it;

[0021] Step 3: Heat the treated blade template to 700°C under the protection of nitrogen atmosphere, calcining for 196 minutes, then change to air atmosphere, calcining at 550°C for 3 hours, ...

Embodiment 2

[0026] The synthetic method of biological structure carbon / cerium oxide artificial photosynthetic material comprises the following steps:

[0027] The first step: pretreatment of leaves: willow leaves are soaked in a mixture of 5% dilute hydrochloric acid and 95% absolute ethanol and distilled water with a volume ratio of 3:1 for 12 hours, taken out, washed with distilled water, and then used Soak in a mixture of 5% dilute hydrochloric acid and 95% absolute ethanol and distilled water at a volume ratio of 3:1 for 18 hours;

[0028] Step 2: Prepare 1L aqueous solution of cerium chloride with a concentration of 0.15mol / L. After stirring and dissolving, soak the pretreated willow leaves in the solution for 48 hours, take it out, wash it, and dry it;

[0029] Step 3: Heat the treated blade template to 600°C under the protection of nitrogen atmosphere, calcining for 400 minutes, then change to air atmosphere, calcining at 500°C for 3 hours, and cool naturally.

[0030] Through the...

Embodiment 3

[0032] The synthetic method of biological structure carbon / cerium oxide artificial photosynthetic material comprises the following steps:

[0033] The first step: pretreatment of the leaves: the leaves of the star anise gold plate are soaked in a mixture of 5% dilute hydrochloric acid and 95% absolute ethanol and distilled water with a volume ratio of 3:1 for 12 hours, and then washed with distilled water after taking them out. Soak with 5% dilute hydrochloric acid and 95% mixture of absolute ethanol and distilled water with a volume ratio of 3:1 for 24 hours;

[0034] Step 3: Prepare 1L aqueous solution of cerium sulfate with a concentration of 1mol / L. After stirring and dissolving, soak the pretreated star anise gold plate leaf in the solution for 24 hours, take it out, wash it with distilled water, and dry it;

[0035] Step 3: Heat the treated leaf template to 650°C under the protection of nitrogen atmosphere, calcining for 380 minutes, then change to air atmosphere, calcin...

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Abstract

The invention provides a synthetic method of a biological structural carbon / cerium oxide artificial photosynthesis material. The synthetic method comprises the following steps: leaf pretreatment is carried out, plant leaves are soaked in mixed liquor of dilute hydrochloric acid, absolute ethyl alcohol and distilled water, then is taken out, is cleaned with the distilled water, and is soaked in the mixed liquor of dilute hydrochloric acid, absolute ethyl alcohol and the distilled water; a cerium solution is prepared, a pretreated leaf template is soaked in the cerium solution, is taken out, is washed with the distilled water, and is dried; the treated leaf template is calcined under nitrogen atmosphere protection, then is calcined in an air atmosphere, and is subjected to natural cooling, and the biological structural carbon / cerium oxide artificial photosynthesis material is obtained. The synthetic method of the biological structural carbon / cerium oxide artificial photosynthesis material adopts a relatively simple chemical technology, the reaction requires no complicated equipment, the varieties of required chemical raw materials are few, the cost is low, the experiment repeatability is good, the biological structural carbon / cerium oxide artificial photosynthesis material has very high photocatalysis value, a utilization ratio of visible light by the biological structural carbon / cerium oxide artificial photosynthesis material can be raised substantially, the effect of photocatalytically splitting of water into hydrogen of the biological structural carbon / cerium oxide artificial photosynthesis material under sunlight can be improved, and the biological structural carbon / cerium oxide artificial photosynthesis material has wide potential application value.

Description

technical field [0001] The invention relates to the field of photosynthetic materials, in particular to a method for synthesizing biological structure carbon / cerium oxide artificial photosynthetic materials. Background technique [0002] Hydrogen production by electrolysis of water is the most common method of hydrogen production, but it has many disadvantages: first, solid polymer electrolyte membrane is the core part of hydrogen production by electrolysis of water, but the current domestic development of solid polymer electrolyte membrane is limited, Most rely on a few foreign companies, so the cost of hydrogen production is relatively high; second, the membrane as a catalyst has a limited service life and a low repeated utilization rate; third, in the actual operation process, it needs to consume a lot of electric energy. The biostructural carbon / cerium oxide artificial photosynthetic material prepared by the bioremains method can decompose water to produce hydrogen under...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J32/00B01J21/18C01B3/04
CPCC01B3/042B01J21/18B01J23/10C01B2203/0277C01B2203/1082C01B2203/1205C01B2203/1041B01J35/39Y02E60/36
Inventor 刘成宝陈丰王陈程陈志刚钱君超吴正颖唐远征陈晓
Owner SUZHOU UNIV OF SCI & TECH
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