Light-catalyst high flux research

Abstract

The invention is a high-throughput research method for evaluating catalysts for photocatalytic biomass hydrogen production. In this method, biomass starch, fiber, glucose and sucrose are used as degradation reactants, and hydrogen is generated on the semiconductor catalyst under light, and the generated hydrogen reduces nitrobenzene to beacon aniline, and then the beacon aniline and Fluorescent agent reacts to generate fluorescent substance, which is quantitatively analyzed by fluorescence imaging system to obtain the amount of aniline, and the amount of aniline is directly proportional to the activity of photocatalyst. This method can evaluate hundreds of catalysts at the same time, and is a high-throughput photocatalyst evaluation method. Verification and comparison with traditional research methods show that this method is simple to operate, has good reliability and reproducibility, and improves the screening speed and efficiency of photocatalysts by hundreds of times, and is especially suitable for the selection of large-scale multi-component photocatalysts.

Description

technical field [0001] The invention discloses a high-throughput research method for photocatalysts. Background technique [0002] Hydrogen as a future potential clean fuel is currently only produced industrially from non-renewable oil, natural gas and coal. In principle, hydrogen can also be produced from renewable biomass and water. With the consumption of fossil energy and the increase of energy demand in various countries, it is very important to research and develop new energy. Sugar, starch, fiber, etc. are renewable biomass produced by green plants, and are energy-rich energy carriers. If they are used to prepare hydrogen, it will be an ideal new energy material. Cortrigh et al. reported [Nature 418(2002) 964.] to prepare hydrogen from biomass through liquid-phase steam reforming. In order to keep the reaction in the liquid phase, the reaction must be carried out under high pressure, and a large amount of CO, Methane, ethane, propane and other by-products. It has ...

AI Technical Summary

Problems solved by technology

The traditional method to study catalysts is to use a single preparation and single evaluation method. It takes a few days to evaluate a catalyst, which is inefficient and takes a long time.

In recent years, a high-throughput chemical research method has been developed in the field of catalysis, which can prepare hundreds of catalysts at the same time. Maier et al. developed a high-throughput photocatalyst evaluation method using high-performance liquid chromatography to study catalysts [Angew.Chem. Int.Ed.2001, 40(17), 3160.], but because it takes several minutes to tens of minutes to analyze a sample, the speed cannot meet the requirements of high throughput

Suzuki et al [Appl.Surf.Sci.189(2002)260] developed PH imaging technology for photocatalyst evaluation, but due to the interdiffusion of samples, the quantitative analysis error is large

Matsumoto et al [Meas.Sci.Technol.16(2005) 199] use atomic force microscopy to evaluate photocatalysts, but because it is also a sequential scan, the speed is slow and the equipment is expensive

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