有机体基锌铁双金属催化剂的溶胶凝胶法制备及对染料废水的可见光催化降解

doi:10.3969/j.issn.1007-2861.2015.04.009

Abstract

Abstract:

Zinc acetylacetonate and iron acetylacetonate are used as sources of organic zinc and organic iron to successfully synthesize a new type of organism-based zinc-iron bimetallic material using the sol-gel method. This organic material has wonderful photocatalytic performance for degrading organic contaminants in water. Several techniques including X-ray diffraction (XRD), elemental analysis (EA), UV-Vis diffuse reflection spectrum(UVPC), inductively coupled plasma emission spectrometry (ICP-AES) and Fourier transform infrared spectroscopy (FT-IR) are used to analyze its structure and composition. It is found that this organism-based zinc-iron bimetallic material has a layered structure with a layer distance of about 8.74 nm. Contents of iron, zinc and carbon of the material are 8.39%, 25.73% and 39.64%, respectively. The material contains metal-oxygen bond and acetylacetone. Photo-catalytic activity and selectivity of the photocatalysts are evaluated by visible photo-catalytic degradation of Congo Red, Rhodamine B and aniline, respectively standing for anion organic, cationic organic and non-ionic organic. The photocatalytic degradation rate of anion organic Congo Red reaches 99 mg/g by the catalyst under sunshine, the cationic organic Rhodamine B reaches 36 mg/g, and the non-ionic organic aniline is only 32 mg/g. Therefore, its selective photocatalysis performance of anionic
dyes is the best.

Key words: dye wastewater, organism-based zinc-iron bimetallic material , photocatalysis , sol-gel method

RUAN Xiuxiu, ZUO Jianwei, CHEN Hua, XU Nannan, YANG Erwei. Synthesis of organism-based zinc-iron bimetallic catalyst by sol-gel and its visible photocatalytic activity to dyeing effluents[J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(4): 515-523.

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Synthesis of organism-based zinc-iron bimetallic catalyst by sol-gel and its visible photocatalytic activity to dyeing effluents

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