Preparation and Surface Modification of Ferric Titanate/Fe2O3 Composite Photoelectrode

Abstract

The invention provides a preparation and surface modification method of an iron titanate / ferric oxide composite photoelectrode, and relates to the field of materials. The preparation method of the composite photoelectrode includes: cleaning the FTO conductive glass; placing the FTO conductive glass in the inorganic salt solution of titanium with the conductive side facing down, soaking at 60-80°C for 10-60min; conducting the cleaned FTO The glass is heated at 150-200°C for 10-30min; the heated FTO conductive glass is placed in a reaction kettle filled with iron inorganic salt and mineralizer aqueous solution, and the reaction kettle is heated at 60-100°C 2‑5h; take out the FTO conductive glass reacted in the reactor, and clean it, anneal the cleaned FTO conductive glass at 500‑600°C for 1‑3h, then anneal at 700‑800°C for 10‑ 30min, the nanometer iron titanate / ferric oxide composite photoelectrode was prepared. The preparation method of the composite photoelectrode of the present application is simple, the experimental conditions are easy to control, and the prepared composite photoelectrode has high photoelectric catalytic water splitting 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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