A kind of carbonized nitrogen nanosheet and its preparation method and application

Abstract

The invention belongs to the technical field of nano material synthesis. A graphite-like phase nitrogen carbide (g-C3N4) nanosheet photocatalyst is synthetized in one step by using a simple, direct and quick thermal polymerization method, and can be used for photocatalytic decomposition on water to produce hydrogen under visible light. The method comprises the following steps: weighing tripolycyanamide, putting into a round crucible, flatly putting treated foam nickel on the tripolycyanamide, covering with a crucible cover, flatly putting into a muffle furnace with initial temperature of 50 DEG C, heating the muffle furnace to 500 to 550 DEG C at a heating rate of 2.3 DEG C / min, reacting for 4h at the temperature which is 550 DEG C preferably, and naturally cooling to room temperature, thus obtaining black foam nickle on an upper layer and a corresponding nitrogen carbide nanosheet on a lower layer.

Description

technical field The invention belongs to the technical field of nanomaterial synthesis, and uses a simple, direct and rapid thermal polymerization method to synthesize graphite-like phase nitrogen carbide (g-C) in one step. 3 N 4 ) nanosheet photocatalyst, which can be used for photocatalytic decomposition of water to produce hydrogen under visible light. Background technique In recent years, a series of global problems such as environmental pollution and energy shortage have had an increasingly serious impact on human development. Governments and scientists are seeking a green, sustainable and effective alternative to solve the above problems. In the past In the past 40 years, photocatalytic water splitting to produce hydrogen has become a hot research topic to solve problems due to its advantages of economy, environmental protection, renewability, and safety. Photocatalytic technology can realize water splitting by using green and pollution-free sunlight. Hydrogen produc...

AI Technical Summary

Problems solved by technology

Therefore, the preparation of carbon nitride nanosheets is an effective strategy to improve the photocatalytic performance of carbon nitride. The current preparation methods of carbon nitride nanosheets mainly include ultrasonic exfoliation, thermal exfoliation, and template-assisted synthesis. These methods have many shortcomings, such as Long preparation cycle, energy consumption and cumbersome process

There is no report on the preparation of nitrogen carbide nanosheets assisted by nickel foam

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