| 不同前驱体制备的碳化氮材料电化学选择性还原四价锡离子 |
| Selective electrocatalytic reduction of Sn(Ⅳ) by carbon nitrogen materials prepared with different precursors |
| 作者 | 单位 | E-mail | | 潘锐 | 常州大学环境科学与工程学院, 常州 213164
石油和化工行业连续流技术工程实验室, 常州 213164 | | | 孟钰婷 | 常州大学环境科学与工程学院, 常州 213164
石油和化工行业连续流技术工程实验室, 常州 213164 | | | 谢瑞刚 | 常州大学环境科学与工程学院, 常州 213164
石油和化工行业连续流技术工程实验室, 常州 213164 | | | 陈代祥 | 石油和化工行业连续流技术工程实验室, 常州 213164 | | | 沈介发 | 石油和化工行业连续流技术工程实验室, 常州 213164 | | | 严生虎 | 石油和化工行业连续流技术工程实验室, 常州 213164 | | | 刘建武 | 石油和化工行业连续流技术工程实验室, 常州 213164 | | | 张跃 | 常州大学环境科学与工程学院, 常州 213164
石油和化工行业连续流技术工程实验室, 常州 213164 | Zyjs@cczu.edu.cn |
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| 摘要: 分别以三聚氰胺、尿素、碳酸胍和硫脲为原料，通过热解法制备了碳化氮(CN)材料。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和氮气吸附-脱附测试对其进行了详细表征。将由该材料制备的电极作为阴极，铂片作为对电极，在酸性溶液中电催化选择性还原Sn(Ⅳ)。与铜片、石墨板、钌铱钛板等常见阴极电极材料相比，CN不仅在双电极电解池中具有较低的电势，且在酸性溶液中稳定，可以实现将Sn(Ⅳ)选择性还原为Sn(Ⅱ)。 |
| 关键词: 碳化氮 Sn(Ⅳ)还原 电催化 |
| 基金项目: 南通醋酸化工股份有限公司吡唑酮绿色工艺的产业化研究（2020年横向项目）资助。 |
| Abstract: Graphitic carbon nitride (CN)-based materials were synthesized using melamine, urea, guanidine carbonate, and thiourea as precursors via pyrolysis. The synthesized materials underwent comprehensive characterization employing techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption-desorption test. These materials were evaluated for their performance as cathodes with platinum sheet electrodes as anodes in the selective electrocatalytic reduction of Sn(Ⅳ) in an acid solution. During the reduction of Sn(Ⅳ) to Sn(Ⅱ), Sn(Ⅱ) can also be reduced to Sn due to the similar reduction potentials of Sn(Ⅱ) and Sn(Ⅳ). The deposition of Sn on the cathode diminishes the electrode conductivity efficiency. Therefore, the electrode material must fulfill the dual requirements of reducing Sn(Ⅳ) to Sn(Ⅱ) while preventing the reduction of Sn(Ⅱ) to Sn. In comparison to conventional cathode materials such as copper plates, graphite plates, ruthenium iridium titanium plates, and platinum plates, the CN demonstrated superior performance in the selective electrocatalytic reduction of Sn(Ⅳ) in an acidic solution. In addition, CN exhibited a lower potential in a dual-electrode electrolytic cell and maintained stability under acidic conditions, enabling the selective reduction of Sn(Ⅳ) to Sn(Ⅱ). |
| Keywords: carbon nitride Sn(Ⅳ) reduction electrocatalysis |
| 投稿时间：2023-11-16 修订日期：2024-03-15 |
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| 潘锐,孟钰婷,谢瑞刚,陈代祥,沈介发,严生虎,刘建武,张跃.不同前驱体制备的碳化氮材料电化学选择性还原四价锡离子[J].无机化学学报,2024,40(5):1015-1024. |
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