TY - JOUR
T1 - Insights into photoluminescence property and photocatalytic activity of cubic and rhombohedral ZnIn2S4
AU - Shen, Shaohua
AU - Guo, Penghui
AU - Zhao, Liang
AU - Du, Yuanchang
AU - Guo, Liejin
PY - 2011/8
Y1 - 2011/8
N2 - 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 °C. With sulfidation temperature increasing from 400 to 800 °C, the crystal phase of ZnIn 2S4 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 ZnIn 2S4, with band gaps calculated to be 2.0 and 2.5 eV, respectively. However, under visible light irradiation, rhombohedral ZnIn 2S4 photocatalyzed H2 evolution from aqueous sodium sulfite/sulfide solution efficiently, whereas cubic ZnIn 2S4 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.
AB - 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 °C. With sulfidation temperature increasing from 400 to 800 °C, the crystal phase of ZnIn 2S4 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 ZnIn 2S4, with band gaps calculated to be 2.0 and 2.5 eV, respectively. However, under visible light irradiation, rhombohedral ZnIn 2S4 photocatalyzed H2 evolution from aqueous sodium sulfite/sulfide solution efficiently, whereas cubic ZnIn 2S4 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.
KW - Crystal phase
KW - Photocatalytic H evolution
KW - Photoluminescence property
KW - ZnInS
UR - https://www.scopus.com/pages/publications/79960699857
U2 - 10.1016/j.jssc.2011.06.033
DO - 10.1016/j.jssc.2011.06.033
M3 - 文章
AN - SCOPUS:79960699857
SN - 0022-4596
VL - 184
SP - 2250
EP - 2256
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 8
ER -