Preparation method of atomic state Ag-modified ZnO polycrystal nanobelt assembly structure with high hydrogen producing performance

Abstract

The invention discloses a preparation method of an atomic state Ag-modified ZnO polycrystal nanobelt assembly structure with high hydrogen producing performance. The preparation method comprises the steps of weighing a certain amount of zinc acetate dihydrate, and dissolving the weighed zinc acetate dihydrate into deionized water to obtain a clear solution A; weighing a certain amount of hexamethylene tetramine and urea, and dissolving the weighed hexamethylene tetramine and urea into the deionized water to obtain a clear solution B; adding the solution B into the solution A, adding a certain volume of silver nitrate solution into the mixed solution, and evenly mixing to obtain a reaction system; transferring the mixed liquid into a reactor, and carrying out a reaction for 3-24h at the temperature of 60-100 DEG C; then, centrifuging, washing and drying; putting a dried solid into a tube furnace, and roasting to obtain a finished product. The preparation method provided by the invention is simple in operation and low in preparation cost, and can realize large-scale production; the obtained atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is regular in morphology and adjustable in size; the atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is used for simulating sunlight to carrying out photolysis on water so as to produce hydrogen, and the hydrogen production efficiency of the atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is obviously higher than that of a pure ZnO nanostructure.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for easy manufacturing of small particles that have specific shapes or sizes. These tiny particles are made up from zinc oxide (Zr02) grains joined together by metal bonds at their edges. They show improved photo catalyst performance when exposed to UV rays on an indoor surface due to increased absorbance compared to traditional materials like titanium dioxide powder. Additionally, this modification improves the ability of these fine particles to break down organic molecules into smaller compounds called oxygen gas during photosynthesis process. Overall, it provides technical benefits such as lower costs, ease of use, flexibility in designing structures, and enhanced effectiveness over existing methods.

Problems solved by technology

This patented technical problem addressed in this patents relates to developing cost-effective and efficiently active catalyst material for use in splitting water molecules producing hydrogen without causing environmental pollution or global warming issues. Current methods involve expensive noble metals like silver, which have limitations in terms of absorption range and electron conduction capacity. To address this challenge new ways were proposed including modifying zinc oxides through various techniques involving solvothermal reactions at very small scales.

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