Titanium-phosphorus-codoped ferric oxide photoelectrode and preparation method thereof

Abstract

The invention provides a titanium-phosphorus-codoped ferric oxide photoelectrode and a preparation method thereof and belongs to the field of nanometer materials. The method includes the following steps that fluorine-doped tin oxide (FTO) conducting glass is cleaned, titanium inorganic salt and phosphoric acid are evenly dispersed into deionized water, and a precursor solution is acquired; the cleaned FTO conducting glass is put into a reacting still containing the precursor solution, and reaction is conducted at the temperature of 95-105 DEG C for 3-5 hours, so that titanium and phosphorus co-modified FTO conducting glass is prepared; the titanium and phosphorus co-modified FTO conducting glass is put into a reacting still containing an aqueous solution of iron inorganic salt and mineralizer, and reaction is conducted at the temperature of 90-100 DEG C for 3-5 hours; the titanium and phosphorus co-modified FTO conducting glass is taken out after the reaction, annealing is conducted at the temperature of 500-600 DEG C for 1-3 hours, and then annealing is conducted at the temperature of 700-800 DEG C for 10-30 min, so that the titanium-phosphorus-codoped ferric oxide photoelectrode is prepared. According to the scheme, metal and nonmetal are codoped into alpha-Fe2O3 so as to greatly improve the property of water photolysis.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a titanium-phosphorus co-doped iron oxide photoelectrode and a preparation method thereof. Background technique [0002] The energy crisis and environmental pollution are becoming key issues restricting the sustainable development of human society, and it is imperative to develop and utilize clean energy. Among the many clean energy sources, hydrogen energy is an energy source with great application potential. It has a high combustion value, and the products of hydrogen combustion will not cause any environmental pollution problems. It is an ideal energy source to replace traditional fossil energy sources. one. However, the current large-scale acquisition of hydrogen mainly comes from the reforming of coal, oil and natural gas. Although this hydrogen production method is mature, it is expensive and pollutes the environment. Therefore, it is imperative to seek green, economical...

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Problems solved by technology

However, the element-doped α-Fe prepared by the above two methods 2 o 3 The photolytic water splitting performance is still no

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