Preparation and application of Nd3-xCoxTaO7-zeolite composite porous nano-catalyst material

Abstract

According to the invention, a novel photocatalyst Nd3-xCoxTaO7 (x is less than or equal to 1 and greater than or equal to 0.5) is prepared by a coprecipitation-spray drying method; a Nd3-xCoxTaO7 (x is less than or equal to 1 and greater than or equal to 0.5)-zeolite composite porous nano-catalyst material is prepared by a sol-gel method; and Nd3-xCoxTaO7 is loaded on a common electrode by a sol-gel method to prepare a novel photoelectrode Nd3-xCoxTaO7 (x is less than or equal to 1 and greater than or equal to 0.5). With the application of the above photocatalytic material, organic pollutants such as parathion-methyl, methylene blue, sulfamethoxazole and the like in wastewater are degraded through a reaction system composed of a light source and a photocatalytic material. The light source is a xenon lamp. By the use of a cut-off filter (lambda is greater than 420nm) and through magnetic stirring, the photocatalyst is uniformly distributed in an aqueous solution, and simultaneously oxygenic aeration is performed. The whole illumination reaction is carried out in an enclosed lightproof environment. In addition, by using a Nd3-xCoxTaO7 (x is less than or equal to 1 and greater than or equal to 0.5) powder as a catalyst or respectively loading Pt, NiO and RuO2 cocatalysts and by using the xenon lamp or a high-pressure mercury lamp as the light source, water decomposition is carried out by illuminating the reactor inside an enclosed glass pipeline controlled by multiple valves so as to prepare hydrogen.

Description

technical field [0001] The present invention relates to two novel photocatalysts and a novel photoelectrode, preparation and application, especially powder catalytic material Nd 3-x co x TaO 7 (0.5≤x≤1), "Nd 3-x co x TaO 7 (0.5≤x≤1)-zeolite composite porous nanocatalytic material and Nd 3-x co x TaO 7 (0.5≤x≤1) new photoelectrode, preparation process, application of photocatalytic removal of organic pollutants in water, and application of photocatalytic decomposition of water to produce hydrogen. Background technique [0002] In recent years, due to the widespread use of traditional fossil fuels and the rapid development of industry today, which have caused problems such as environmental pollution, climate change, and energy crises, people have realized that the sustainable development of the future society must be based on environmental pollution control and sustainable development. Based on the development and utilization of sustainable energy. Traditional polluti...

AI Technical Summary

Problems solved by technology

Most of the visible light photocatalytic materials reported so far are in the form of powders, which have good photocatalytic activity in suspension systems. In addition, in order to solve the secondary pollution problem of powder photocatalytic materials in suspension systems, it is urgent to prepare core-shell powders. Shaped photocatalytic materials, the purpose is to improve the recovery rate of core-shell powdery photocatalytic materials, and also ensure that the core-shell powdery photocatalytic materials have high photocatalytic quantum efficiency

Images