Photo-catalytic reactor and preparation method thereof, based on three-dimensional cylindrical hierarchical structure array

Abstract

The invention discloses a photo-catalytic reactor and a preparation method thereof, based on a three-dimensional cylindrical hierarchical structure array. Fiber cores are arranged on a glass base at 250 or 375 micros distance, one end of each of the fiber core is fixed by PDMS glue to form a first-layer fiber core array; a second-layer fiber core array is prepared in the same way in a direction perpendicular to the first-layer fiber core array; a third-layer fiber core array is prepared in the same way in a direction perpendicular to the second-layer fiber core array; ZNO nanowires are synthetized on the basis of an immersion method on the second-layer fiber core array and the third-layer fiber core array and a three-dimensional fiber core array, and the three-dimensional cylindrical hierarchical structure array with definite number of layers and pitch and controllable surface appearance and photocatalytic performance is obtained finally. The preparation method is low in manufacturing cost, simple and convenient to operate, remarkably increases the base area, and ensures the precision of the fiber core array. The ZNO nanowire film is synthetized on the surface of the three-dimensional fiber core array to obtain the three-dimensional cylindrical hierarchical structure array, and the surface area of the catalyst is further increased.

Description

Technical field [0001] The invention belongs to the field of photocatalysis technology, and is mainly used in the purification treatment of polluted water in the fields of chemical engineering, materials, medicine, biology, environmental protection, etc., and particularly relates to a photocatalytic reactor based on a three-dimensional cylindrical cross-scale structure array and preparation thereof method. Background technique [0002] The purification treatment of polluted water quality can be divided into physicochemical method, biological method and photocatalytic method. Among them, the cost of physicochemical method is relatively high, the biological method has low efficiency in the treatment of refractory organic matter, and the photocatalytic method has the advantages of high efficiency and low cost. Photocatalytic technology uses certain semiconductor materials as catalysts and degrades pollutants in water through its absorption of light, thereby realizing the purificatio...

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Problems solved by technology

In the above preparation methods, the substrates used are mainly planes, cylinders and single-layer rectangular grid structures, so that the catalytic area is limited, and the catalytic effect needs to be further improved.

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