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| Preparation of High Purity CdTe Powder by Hydrometallurgical Method |
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Received:December 21, 2022
Revised:December 30, 2022
Accepted:January 01, 2023
Published Online:March 17, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.04.012 |
| KeyWord:CdTe; co-precipitation; hydrogen reduction; morphology control |
| Author | Institution |
| ZOU Fa-kui |
北京矿冶研究总院 |
| WANG Hai-bei |
矿冶科技集团有限公司 |
| FAN Yan-qing |
矿冶科技集团有限公司 |
| LIU Wei |
矿冶科技集团有限公司 |
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| Abstract: |
| CdTe powder was prepared by co-precipitation and hydrogen reduction method applying high purity CdCl2 and TeO2 as raw materials and (NH4)2CO3 as precipitant. The phase transformation and microstructure change during the above process were analyzed by means of XRD, SEM, TG and other research methods. Based on the thermodynamic data of chemical reactions, the chemical reactions occurred in hydrogenation process were theoretically analyzed. The results show that when CdCl2 and TeO2 are mixed at a molar ratio of 1︰1, the Cd and Te co-precipitation product is obtained. Cd2+ precipitates on the surface of TeO2 in the form of CdCO3 with a size of 1~2 μm. The CdTe powder composed of single phase is successfully reduced under the atmosphere of hydrogen argon mixture (10% H2+90% Ar) at 500 ℃. |
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