A simple mechanical mixing method for preparation of visible-light-sensitive NiO-CaO composite photocatalysts with high photocatalytic activity

被引：32

作者：

Song, Limin ^{[2
,3
]}

Zhang, Shujuan ^{[1
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Sci, Tianjin 300457, Peoples R China

[2] Tianjin Polytech Univ, Coll Environm & Chem Engn, Tianjin 300160, Peoples R China

[3] Tianjin Polytech Univ, Tianjin Key Lab Fiber Modificat & Funct Fiber, Tianjin 300160, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 174卷 / 1-3期

关键词：

NiO-CaO; A mechanical mixing method; Visible-light-sensitive; Photocatalyst; TITANIUM-DIOXIDE PHOTOCATALYSTS; HYDROTHERMAL SYNTHESIS; IRRADIATION; DEGRADATION; NITROGEN; OXIDES; WATER; DECOMPOSITION;

D O I：

10.1016/j.jhazmat.2009.09.088

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Composite photocatalysts composed of NiO and CaO have been prepared via mechanically mixing of the two powders. The as-synthesized NiO-CaO products were characterized by X-ray diffraction (XRD) and UV-vis spectrometry. The experimental results showed that the absorption wavelength range of the mixed NiO-CaO sample was notably extended towards the visible-light region (400-450 nm). Photocatalytic activity of the NiO-CaO composite was evaluated based on the decomposition of methylene blue under visible-light irradiation. The effects of CaO doping and the duration of heat treatment on the durability of the NiO-CaO products have been investigated in detail. Factors influencing photocatalytic activity and the mechanism of photocatalysis were also addressed. Published by Elsevier B.V.

引用

页码：563 / 566

页数：4

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