| Preparation of flake AgSnO2 composite powders by hydrothermal method |
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| 作者姓名： | 杨天足 杜作娟 古映莹 邱晓勇 江名喜 楚广 |
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| 作者单位： | [1]School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [2]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China |
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| 摘 要： | Silver-tin oxide composite powders and silver powders were synthesized by hydrothermal method using NHs to complex Ag^＋, SO3^2- to reduce Ag（NH3）2^＋ and Na2SnO3 as the source of tin. The powders were characterized by XRD, SEM and EDX. The results show that there are macroscopic and microscopic differences between two kinds of powders. Spherical silver powders are 3μm in diameter, and silver-tin oxide composite powders are mainly flake of about 0.3μm in thickness. Silver crystal in silver-tin oxide composite powders is preferentially oriented in the （111） crystallographic direction and its oriented index is 2.581. Crystal lattice parameter of silver crystal of silver tin-oxide composite powders is 0.409 34 nm, larger than 0.408 68 nm of silver powders. The XPS analysis shows that silver in silver-tin oxide composite powders is metallic silver and tin oxide in silver tin-oxide composite powders has the red shift for Sn^4＋（3d（5/2）） and O^2-（1s）.
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| 关 键 词： | 水热法 AgSnO2复合粉末 制备 定向生长 |
| 收稿时间： | 2006-07-08 |
| 修稿时间： | 2006-10-24 |
Preparation of flake AgSnO2 composite powders by hydrothermal method |
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| YANG Tian-zu,DU Zuo-juan,GU Ying-ying,QIU Xiao-yong,JIANG Ming-xi,CHU Guang.Preparation of flake AgSnO2 composite powders by hydrothermal method[J].Transactions of Nonferrous Metals Society of China,2007,17(2):434-438. |
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| Authors: | YANG Tian-zu DU Zuo-juan GU Ying-ying QIU Xiao-yong JIANG Ming-xi CHU Guang |
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| Affiliation: | 1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China |
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| Abstract: | Silver-tin oxide composite powders and silver powders were synthesized by hydrothermal method using NH3 to complex Ag+, SO2?3 to reduce Ag(NH3)+2 and Na2SnO3 as the source of tin. The powders were characterized by XRD, SEM and EDX. The results show that there are macroscopic and microscopic differences between two kinds of powders. Spherical silver powders are 3 μm in diameter, and silver-tin oxide composite powders are mainly flake of about 0.3 μm in thickness. Silver crystal in silver-tin oxide composite powders is preferentially oriented in the (111) crystallographic direction and its oriented index is 2.581. Crystal lattice parameter of silver crystal of silver tin-oxide composite powders is 0.409 34 nm, larger than 0.408 68 nm of silver powders. The XPS analysis shows that silver in silver-tin oxide composite powders is metallic silver and tin oxide in silver tin-oxide composite powders has the red shift for Sn4+(3d5/2) and O2?(1s). |
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| Keywords: | composite material silver-tin oxide powder silver powder hydrothermal method oriented growth |
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