Topotactic synthesis of mesoporous ZnS and ZnO nanoplates and their photocatalytic activity

被引：137

作者：

Jang, Jum Suk ^{[1
,2
]}

Yu, Chung-Jong ^{[3
]}

Choi, Sun Hee ^{[3
]}

Ji, Sang Min ^{[1
,2
]}

Kim, Eun Sun ^{[1
,2
]}

Lee, Jae Sung ^{[1
,2
]}

机构：

[1] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Eco Friendly Catalysis & Energy Lab, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Dept Chem Engn, Pohang 790784, South Korea

[3] POSTECH, Pohang Accelerator Lab, Beamline Res Div, Pohang 790784, South Korea

来源：

JOURNAL OF CATALYSIS | 2008年 / 254卷 / 01期

关键词：

solvothermal synthesis; mesoporous ZnS and ZnO nanoplates; topotactic transformation; photocatalysts;

D O I：

10.1016/j.jcat.2007.12.010

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：

Mesoporous ZnS and ZnO nanoplates were fabricated by calcination of a ZnS(en)(0.5) complex (en = ethylenediamine), which was solvothermally synthesized using ethylenediamine as a single solvent. When the synthesized ZnS(en)(0.5) complex was heated, mesoporous nanoplates of wurtzite ZnS were formed, which then transformed to ZnO platelets upon further oxidation. The ZnS(en)(0.5) -> ZnS -> ZnO transformation process appeared to be topotatic because of the crystallographic relation of the structures and pseudomorphism among the three solids. Photocatalytic performance of the materials was investigated for hydrogen production from aqueous Na2S/Na2SO3 solution and decomposition of the azo dye, acid red 14. The ZnS calcined at 500 degrees C exhibited the highest hydrogen production rate through water splitting under visible light irradiation, and ZnO calcined at 550-600 degrees C photocatalytically degraded the dye upon UV-irradiation. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：144 / 155

页数：12

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