Precious metal Pt modified BiOI photocatalyst and preparation and application thereof

• Main Authors: SONG YIBING, XIAO SONGTAO, BI HUI, HU DAIRONG, FANG YIWEN, ZHANG CHENCHEN
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a precious metal Pt modified BiOI photocatalyst. BiOI is a bismuth oxyiodide microballoon with the center being groove-shaped which is formed through self-assembly of two-dimensional nano sheets, Pt is deposited on the surface and the interior of the groove of the BiOI microballoon, and the content of Pt is 0.5-5wt%. The preparation method comprises the steps that a BiOI microballoon photocatalysis material with the groove is placed in a quartz pipe at the temperature of 26-28 DEG C, an organic solution is added to prepare suspension liquid, and the gas is introduced for 10-60 minutes so as to remove the dissolved oxygen in the solution; a platinum precursor solution is added into the suspension liquid drop by drop under the condition of dark and fierce stirring; the mixed solution is stirred continuously and placed under a mercury lamp to be irradiated for 1-6 hours; and a solid product is obtained after filtration is conducted, the product is sufficiently washed and dried for 8-24 h