TiO2水性溶胶的制备及其对NO的净化性能
Preparation of TiO2 Hydrosol and Its Purification Activity on NO
DOI: 10.12677/ms.2024.147126, PDF,    科研立项经费支持
作者: 孙 芃, 刘未杰, 刘 凝, 贾依婷, 宁占武, 刘锦华*：北京市科学技术研究院城市安全与环境科学研究所，北京；张志伟：河北省建筑科学研究院有限公司，河北 石家庄；河北省建筑工程质量检测中心有限公司，河北 石家庄；张高雨：北京科技大学天津学院，天津；谷占勇：石家庄学院化工学院，河北 石家庄；王树威：交通运输部公路科学研究院，北京；李云周：河北省建筑工程质量检测中心有限公司，河北 石家庄；刘文秀：北京为康环保科技有限公司，北京
关键词: 二氧化钛；水性溶胶；光催化；一氧化氮净化；TiO2； Hydrosol； Photocatalytic； NO Purification
摘要: 本文采用水热法，以过氧钛酸(PTA)为前驱体制备了二氧化钛(TiO2)、钨掺杂二氧化钛(W-TiO2)和铜掺杂二氧化钛(Cu-TiO2)系列溶胶。XRD显示所合成的溶胶均为锐钛矿相。激光粒度散射(DLS)结果表明溶液中的胶体粒径分布为10 nm~100 nm范围内的单分散形态，且zeta电位绝对值大于35 mV，说明溶胶具有良好的稳定性。所合成的溶胶光照下对NO具有良好的净化效果，其中Cu-TiO2的净化率最高，约为88%。此外，还对所合成的溶胶进行了包含紫外光照和湿热条件的老化测试，在经过300 h的老化测试后，所有样品对NO的净化性能衰减均不超过10%，说明所合成的溶胶具有良好的长效性。
Abstract: In this work, titanium dioxide (TiO2), tungsten-doped titanium dioxide (W-TiO2) and copper-doped titanium dioxide (Cu-TiO2) hydrosols were prepared by hydrothermal method with peroxo titanic acid (PTA) as precursor. XRD results showed that the synthesized samples were all anatase phase. Dynamic light scattering (DLS) results showed that the colloidal particle size distribution in the solution was monodisperse in the range of 10 nm~100 nm, and the absolute value of zeta potential was greater than 35 mV, indicating that the hydrosols had good stability. The prepared sample had good purification ability of NO under irradiation. Among them, Cu-TiO2 exhibited the highest purification ratio of 88%. In addition, the aging experiments were carried out to investigate the long-term stability of the samples. After 300 h of aging test, the decrease of purification activity of the samples was less than 10%, indicating the good long-term stability of the samples.
文章引用：孙芃, 张志伟, 张高雨, 刘未杰, 刘凝, 贾依婷, 谷占勇, 王树威, 李云周, 刘文秀, 宁占武, 刘锦华. TiO2水性溶胶的制备及其对NO的净化性能[J]. 材料科学, 2024, 14(7): 1118-1125. https://doi.org/10.12677/ms.2024.147126

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