Nitrogen-doped carbon supported tin and tin oxide nano composite material as well as preparation and application thereof

Abstract

The invention relates to a nitrogen-doped carbon supported tin and tin oxide nano composite material as well as preparation and application thereof. A preparation method of the composite material specifically comprises the following steps: (1) weighing SnCl2 and NH4F, dissolving the components into water, further pouring the solution into a reaction container, vertically putting pretreated carboncloth into the container of the reaction container, performing a hydrothermal reaction, performing cooling, taking out the carbon cloth, performing cleaning, and performing drying; (2) weighing dopamine, dissolving the dopamine in a Tris buffer, further vertically suspending the prepared carbon cloth loaded with a Sn2O3 nano chip array material, performing a standing reaction, taking out the carbon cloth material, performing cleaning, and performing drying; and (3) performing calcining treatment on the carbon cloth which is prepared in the step (2) and has the polydopamine wrapped Sn2O3 nano chip array material, so as to obtain a target product, namely a Sn / SnO2@C nano composite material. Compared with the prior art, the nitrogen-doped carbon material into which a metal nano particle composite carbon material is introduced is applied to electrocatalytic carbon dioxide reduction, and provides a novel idea for preparation of carbon dioxide electrocatalytic reduction catalysts.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic composite materials, and relates to a nanocomposite material of nitrogen-doped carbon-loaded tin and tin oxide and its preparation and application. Background technique [0002] Excessive CO 2 Emissions are considered to be the main cause of climate change, the accumulation of greenhouse gases leading to global warming, resulting in many hazards, such as the redistribution of global rainfall, melting glaciers, and rising sea levels, which will ultimately endanger the survival of human beings . Therefore, how to reduce CO 2 It is an urgent problem to be solved in the sustainable development of mankind. [0003] So far, various technologies have been developed to convert CO 2 , such as electrochemical, photocatalytic, biochemical and thermochemical methods. CO 2 The condition of electrochemical reduction is very mild, and by controlling the electrochemical parameters, such as potentia...

AI Technical Summary

Problems solved by technology

However, in this process, the biggest challenge is the CO 2 The slow kinetics of electrochemical reduction and the presence of H during the reaction 2 reduced competition

Common heterogeneous catalysts such as Au, Ag, and Pd have high catalytic activity and selectivity, but their low reserves and high price limit their wide-scale use.

[0004] N-doped carbon materials have good stability and conductivity, but when used alone 2 The reduction ability of CO is relatively weak, therefore, how to improve N-doped carbon materials belongs to the current research CO 2 Key Points and Hotspots of Electrochemical Reduction Catalytic Materials

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