Fabrication of Bi_2O_3/TiO_2nanocomposites and their applications to the degradation of pollutants in air and water under visible-light

查看全文 作　　者：Ashok Kumar [1]Chakraborty;Md Emran [1]Hossain;Md Masudur [1]Rhaman;K M A [2]Sobahan

机构地区：[1]Department of Applied Chemistry and Chemical Technology, Islamic University;[2]Department of Applied Physics, Electronics and Communication Engineering, Islamic University

出　　处：《Journal of Environmental Sciences》索引2014年第26卷第2期,共8页

摘　　要：A nanoheterojunction composite photocatalyst Bi2O3/TiO2working under visible-light(λ 420 nm) was prepared by combining two semiconductors Bi2O3 and TiO2 varying the Bi2O3/TiO2molar ratio. Maleic acid was employed as an organic binder to unite Bi2O3 and TiO2 nanoparticles. The SEM, TEM, XRD and diffuse reflectance spectra were utilized to characterize the prepared Bi2O3/TiO2nanoheterojunction. The nanocomposite exhibited unusual high photocatalytic activity in decomposing 2-propanol in gas phase and phenol in aqueous phase and, evolution of CO2 under visible light irradiation while the end members exhibited low photocatalytic activity. The composite was optimized to 5 mol% Bi2O3/TiO2. The remarkable high photocatalytic efficiency originates from the unique relative energy band position of Bi2O3 and TiO2 as well as the absorption of visible light by Bi2O3. 关键词：纳米复合材料可见光照射 TIO2纳米粒子水相污染物 BI2O3 光催化活性制造

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Fabrication of Bi_2O_3/TiO_2nanocomposites and their applications to the degradation of pollutants in air and water under visible-light

参考文献(35)

引证文献(7)

耦合文献(16)

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