Visible-light-induced photocatalyst based on C-doped LaCoO3 synthesized by novel microorganism chelate method

被引:56
作者
Jia, Lishan [1 ,3 ]
Li, Juanjuan [3 ]
Fang, Weiping [2 ]
Song, Hao [3 ]
Li, Qingbiao [3 ]
Tang, Yong [3 ]
机构
[1] Xiamen Univ, Dept Chem & Biochem Engn, Key Lab Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
[2] Xiamen Univ, State Key Lab Phys Chem Solid Surface, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
[3] Key Lab Chem Biol Fujian Prov, Fujian, Peoples R China
关键词
Bacillus licheniformis R08 biomass; C-doped LaCoO3; Visible-light activity; Photocatalyst; Microorganism chelate method; (GA1-XZNX)(N1-XOX) SOLID-SOLUTION; HYDROGEN-PRODUCTION; WATER; TIO2; FE; SEMICONDUCTOR; DEGRADATION; NITROGEN; OXYGEN; PHOTOSENSITIZATION;
D O I
10.1016/j.catcom.2009.01.025
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The C-doped LaCoO3 was prepared by microorganism chelate method using Bacillus licheniformis R08 biomass as a chelating agent. XRD, DRS, FT-IR and XPS results demonstrated that the carbon was doped into lattice oxygen of LaCoO3, resulting in the optical absorption edge of C-doped LaCoO3 shifted to the low-energy region. The catalytic activities of the obtained samples were investigated by the photoreduction of carbon dioxide. The photocatalysis tests showed that C-doped LaCoO3 had more obvious advantage in harvesting the visible-light than pure LaCoO3, with the yield of formic acid reaching 95 mu mol/h.g. Narrowing of the band-gap and the existence of Co-C binding, to which the improvement in photocatalytic activity are attributed. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:1230 / 1234
页数:5
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