Nickel ferrite nanoparticles and green synthesis method and application thereof

Abstract

The invention provides nickel ferrite nanoparticles and a preparation method and application thereof in promoting hydrogen production, a water hyacinth extracting solution is adopted as a stabilizer and a regulator, a mixed solution of nickel salt and ferric salt is added, continuous stirring reaction is performed, constant-temperature heating reaction is performed in a water bath kettle, and viscous gel is obtained and dried; and calcining, grinding, washing and drying the product to obtain the nickel ferrite nanoparticles. In the preparation process, no extra chemical reagent is added except the precursor nickel salt and the ferric salt, expensive instruments and equipment are not needed, the operation condition is mild, the method is simple and easy to implement, economical and environmentally friendly, and further expanded production and application are facilitated. The prepared nickel ferrite nanoparticles are stable in performance, relatively uniform in particle size and good in biocompatibility, and have the effects of promoting biological hydrogen synthesis and utilizing reducing sugar in straw hydrolysate after being added into a dark fermentation hydrogen production system; and the accumulated hydrogen yield, the glucose utilization rate and the xylose utilization rate obtained under the optimal addition concentration are respectively and obviously improved compared with control treatment.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and biological hydrogen energy synthesis regulation, and particularly relates to a nickel ferrite nanoparticle, a green synthesis method thereof, and an application of promoting hydrogen production. Background technique [0002] Nanotechnology is an important strategic emerging technology for mankind in the 21st century. So far, most nanomaterials have been synthesized by physical methods or chemical methods. However, physical methods have high energy and economic requirements in terms of preparation conditions, and require stabilizers to disperse the prepared nanoparticles. Chemical methods can produce nanoparticles in a relatively short time, but most of them use toxic and harmful chemical raw materials and have low biocompatibility, which greatly limits the application of nanomaterials in the biological and medical fields. In recent years, with the application prospect of metal nanoparti...

AI Technical Summary

Problems solved by technology

There have been some reports on the addition of single Fe, Ni and their oxide nanoparticles to the dark fermentation hydrogen production system. However, there is no report on the regulation of dark fermentation biological hydrogen production by purely cultured hydrogen-producing bacteria in the form of nano-nickel ferrite complex.

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