Preparation and application of hollow tree-like bismuth oxide-bismuth sulfide complex

A technology of bismuth oxide and bismuth sulfide, applied in chemical/physical processes, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of environmental pollution, toxic and harmful organic intermediates that increase the difficulty of the post-processing process, and achieve Controllable crystal phase, cheap raw materials, and simple process
CN103447052AActive Publication Date: 2013-12-18HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HUNAN UNIV
Publication Date
2013-12-18

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Abstract

The invention provides a preparation method of a hollow tree-like bismuth oxide-bismuth sulfide complex. The preparation method comprises the following steps: (1) taking bismuth nitrate pentahydrate, stirring and dissolving in dilute nitric acid, and then regulating the pH value of a bismuth nitrate solution to 9-14 with a fixed quantity of alkaline solution; then transferring the solution into a crystallization reaction kettle, reacting at the temperature of 80-200 DEG C for 0.5-12h, cooling, filtering, separating, washing with deionized water, washing with anhydrous ethanol, drying and calcining to obtain hollow tubular bismuth oxide; and (2) dispersing the prepared hollow tubular bismuth oxide in the deionized water, adding a water-soluble sulfide while stirring, controlling the molar ratio of the bismuth oxide to the sulfide to be 1: (1-8), then transferring the obtained solution into the crystallization reaction kettle, reacting at 40-180 DEG C for 0.5-36h, cooling, filtering, separating, washing with the deionized water for three times, washing with the anhydrous ethanol and drying to obtain the hollow tree-like bismuth oxide-bismuth sulfide complex. The invention further relates to an application of the hollow tree-like bismuth oxide-bismuth sulfide complex as a photocatalyst.
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Description

[Technical field]

[0001] The invention relates to the field of catalysts, in particular to the preparation and application of a hollow dendritic bismuth oxide-bismuth sulfide photocatalyst. [Background technique]

[0002] With the development of society, the problem of energy shortage and environmental pollution has been paid more and more attention. Solving these two problems is an urgent need to achieve sustainable development. Solar energy is a kind of clean, inexhaustible energy source, so the full utilization of solar energy is considered to be one of the most likely ways to solve these two problems. Photocatalytic materials have important application prospects in the use of sunlight to photolyze water to produce hydrogen and eliminate organic pollutants. Traditional photocatalytic material TiO 2 Because of its wide band gap, it can only absorb ultraviolet light in sunlight, and its utilization efficiency of sunlight is low. In recent years, BiWO 6 , Bi 2 o 3 , Bi...

Claims

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