| 碳酸镉转化制备氢氧化镉及产物光催化降解性 |
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| 引用本文： | 陈庆春,邦宇,万文杰,晏乐安,邓慧宇.碳酸镉转化制备氢氧化镉及产物光催化降解性[J].无机盐工业,2020,52(4):96-99. |
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| 作者姓名： | 陈庆春 邦宇 万文杰 晏乐安 邓慧宇 |
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| 作者单位： | 1.东华理工大学核资源与环境国家重点实验室,江西南昌 3300132.东华理工大学材料科学与工程系3.化工资源有效利用国家重点实验室 |
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| 基金项目： | 核资源与环境重点实验室开放基金项目(NRE1609);国家自然科学基金项目(51463001);国家自然科学基金项目(51666002);化工资源有效利用国家重点实验室开放基金项目(CRE-2015-C-107) |
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| 摘 要： | 用碳酸钠溶液直接混合硫酸镉溶液制备了沉淀碳酸镉,再以沉淀碳酸镉为基体,氢氧化钠溶液为转化剂,通过阴离子交换制备出氢氧化镉纳米材料。采用X射线衍射仪（XRD）和场发射扫描电子显微镜（FESEM）对沉淀碳酸镉和转化产物的结构和形貌进行了表征。结果表明,沉淀碳酸镉的结构遭到破坏,转化完全所得到的氢氧化镉的形貌完全不同于沉淀碳酸镉,为片状组装的不规则球体。紫外光照射下光催化降解罗丹明B染料测试表明,转化产物比沉淀碳酸镉具有更好的光催化降解性能,转化时间不同的产物表现出不同的降解效率。当20 mg的转化产物分散到50 mL 8 mg/L的罗丹明B染料中,在黑暗环境中磁力搅拌吸附120 min达吸附平衡,开启300 W紫外汞灯后,效率最高的转化产物可在180 min内将染料完全降解。
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| 关 键 词： | 碳酸镉 氢氧化镉 离子交换法 光催化降解性 |
| 收稿时间： | 2019-10-15 |
Preparation and photocatalytic degradation property of cadmium hydroxide transformed from cadmium carbonate |
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| Chen Qingchun,Bang Yu,Wan Wenjie,Yan Lean,Deng Huiyu.Preparation and photocatalytic degradation property of cadmium hydroxide transformed from cadmium carbonate[J].Inorganic Chemicals Industry,2020,52(4):96-99. |
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| Authors: | Chen Qingchun Bang Yu Wan Wenjie Yan Lean Deng Huiyu |
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| Affiliation: | 1.State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China2.Department of Materials Science and Engineering,East China University of Technology3.State Key Laboratory of Chemical Resource Engineering |
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| Abstract: | Precipitated cadmium carbonate（P-CdCO3） was prepared by direct blend method with sodium carbonate solution poured into cadmium sulfate solution.Then,the as-prepared P-CdCO3 was used as raw materials to produce cadmium hydro-xideCd（OH）2] nanomaterials with sodium hydroxide as transforming agent.The structure and morphology of P-CdCO3 and Cd（OH）2 nanomaterials were characterized by powder X-ray diffraction（XRD） and field-emission scanning electron micro-scope（FESEM）.Results showed that the structure of P-CdCO3 was destroyed and the morphology of completely transformed Cd（OH）2 was irregular sphere assembled by sheets and totally different from P-CdCO3. Photocatalytic degradation of Rhoda-mine B under irradiation of UV light tests demonstrated that the transformed products had better photocatalytic degradation property than P-CdCO3 and different transformed products had various degradation efficiencies.The Rhodamine B could be degraded completely in 180 min under irradiation of 300 W mercury lamp with addition of best transformed product when 20 mg of transformed product was added into 50 mL of 8 mg/L Rhodamine B solution and the system was stirred for 120 min in dark to reach adsorption equilibrium. |
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| Keywords: | CdCO3 Cd（OH）2 ion-exchange method photocatalytic degradation performance |
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