Abstract Herein, nitrogen-doped tin oxide intercalated activated carbon nanocomposite (N-AC/SnO 2 ) were prepared using hydrothermal strategy and explored as an electrode for capacitive desalination and disinfection. Although tin oxide (SnO 2 ) has good characteristics, the nitrogen must be carefully considered for modifying the characteristics of the carbonaceous materials to improve the performance as an electrode in the CDI process. The characterization of the proposed materials which investigated by XRD, TEM, FE-SEM, XPS and FT-IR affirmed the formation of the nanocomposite. The electrosorption behavior investigated by electrochemical techniques demonstrates that, compared to the specific capacitance of the AC and AC/SnO 2 (207.46 F g −1 and 233.21 F g −1 ), that of the N-AC/SnO 2 is higher at 408.8 F g −1 , and N-AC/SnO 2 exhibits better electrical conductivity. The CDI performance evaluated by batch mode experiments through an applied voltage of 1.2 V in a 50 mg L −1 NaCl aqueous solution shows that the N-AC/SnO 2 electrode introduces a higher electrosorptive capacity of 3.42 mg g −1 , an enhanced desalination efficiency of 61.13%, and good antibacterial performance. Overall, the present study demonstrates that N-AC/SnO 2 has considerable potential as an electrode material for CDI application.

中文翻译：

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制备掺氮 & SnO 2 的活性炭以提高电容去离子的脱盐和生物净化性能

摘要 在此，采用水热策略制备了氮掺杂氧化锡插层活性炭纳米复合材料（N-AC/SnO 2 ），并将其用作电容式脱盐和消毒电极。尽管氧化锡 (SnO 2 ) 具有良好的特性，但必须仔细考虑氮来改变碳质材料的特性，以提高 CDI 工艺中作为电极的性能。通过 XRD、TEM、FE-SEM、XPS 和 FT-IR 研究的拟议材料的表征证实了纳米复合材料的形成。通过电化学技术研究的电吸附行为表明，与 AC 和 AC/SnO 2 的比电容（207.46 F g -1 和 233.21 F g -1 ）相比，N-AC/SnO 2 的比电容更高，为 408.8 F g -1 , N-AC/SnO 2 表现出更好的导电性。通过在 50 mg L -1 NaCl 水溶液中施加 1.2 V 电压的批处理模式实验评估的 CDI 性能表明，N-AC/SnO 2 电极引入了更高的电吸附容量 3.42 mg g -1，增强了脱盐能力有效率61.13%，抗菌性能好。总体而言，本研究表明，N-AC/SnO 2 作为 CDI 应用的电极材料具有相当大的潜力。