Insights into photoluminescence property and photocatalytic activity of cubic and rhombohedral ZnIn2S4

被引：111

作者：

Shen, Shaohua ^{[1
]}

Guo, Penghui ^{[1
]}

Zhao, Liang ^{[1
]}

Du, Yuanchang ^{[1
]}

Guo, Liejin ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2011年 / 184卷 / 08期

基金：

中国国家自然科学基金;

关键词：

ZnIn2S4; Photocatalytic H-2 evolution; Photoluminescence property; Crystal phase; VISIBLE-LIGHT IRRADIATION; SOLID-SOLUTION PHOTOCATALYSTS; H-2; EVOLUTION; HYDROGEN EVOLUTION; RAMAN-SCATTERING; WATER; SULFIDE; CU; NANOPARTICLES; LUMINESCENCE;

D O I：

10.1016/j.jssc.2011.06.033

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cubic and rhombohedral ZnIn2S4 were synthesized by thermal sulfidation of Zn-In mixed oxide precursor in H2S atmosphere at different temperatures. Cubic ZnIn2S4 was obtained when Zn-In mixed oxide precursor was sulfurized at 400 degrees C. With sulfidation temperature increasing from 400 to 800 degrees C, the crystal phase of ZnIn2S4 gradually turned from cubic to rhombohedral, which was demonstrated by different analysis techniques such as XRD, Raman, SEM, etc. UV-vis absorption spectra indicated that cubic ZnIn2S4 displayed better light absorption property than rhombohedral ZnIn2S4, with band gaps calculated to be 2.0 and 2.5 eV, respectively. However, under visible light irradiation, rhombohedral ZnIn2S4 photocatalyzed H-2 evolution from aqueous sodium sulfite/sulfide solution efficiently, whereas cubic ZnIn2S4 was not active for this reaction. The photoluminescence property revealed the different dynamics of photogenerated carriers, which made a predominant contribution to the increasing photocatalytic performances of ZnIn2S4 with crystal phase turning from cubic to rhombohedral. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：2250 / 2256

页数：7

共 47 条

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