Preparation and surface modification methods of ferrous titanate/iron trioxide composite photoelectrode

Abstract

The invention provides preparation and surface modification methods of a ferrous titanate/iron trioxide composite photoelectrode and relates to the field of materials. The preparation method of the composite photoelectrode includes the steps that FTO conducting glass is washed; the FTO conducting glass is placed in an inorganic salt water solution of titanium in the manner that the conducting face is downward, and the FTO conducting glass is soaked for 10-60 min at the temperature of 60-80 DEG C; the washed FTO conducting glass is heated for 10-30 min at the temperature of 150-200 DEG C; the heated FTO conducting glass is placed in a reaction still containing inorganic salt of iron and a mineralizer water solution, and the reaction still is heated for 2-5 h at the temperature of 60-100 DEG C; and the FTO conducting glass obtained after the reaction in the reaction still is taken out and washed, the washed FTO conducting glass is annealed for 1-3 h at the temperature of 500-600 DEG C and then annealed for 10-30 min at the temperature of 700-800 DEG C, and the nano ferrous titanate/iron trioxide composite photoelectrode is prepared. The preparation method of the composite photoelectrode is simple, experimental conditions are easy to control, and the prepared composite photoelectrode has high photoelectrocatalysis water decomposition performance.

Description

technical field [0001] The invention relates to the field of materials, in particular to the preparation and surface modification method of nanometer iron titanate / ferric oxide composite photoelectrode. Background technique [0002] In recent decades, with the depletion of coal, oil, natural gas and other fossil energy sources and the increasingly serious environmental pollution problems, the sustainable development of human society has been seriously threatened, and the development of clean and renewable energy is imminent. . As a kind of clean energy, hydrogen energy is considered as one of the most ideal alternative energy sources to solve energy crisis and environmental problems because of its high combustion value, high efficiency and environmental friendliness. 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 enviro...

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Problems solved by technology

[0006] One object of the present invention is to provide a kind of preparation method of nano iron titanate / ferric oxide composite photoelectrode, to solve the complicated preparation method of present composite photoelectrode, relatively harsh experimental conditions, the prepared nano iron titanate / The problem that the morphology of the ferric oxide composite photoelectrode will change greatly from that of the photoelectrode before the composite

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