作者：Tangxin Zhang，Hao Zhang，Tiantian Zhu，Yuhua Mao，Jiayuan Wang，Lingyu Zhu，Jianli Wang
關鍵字：Dissolved oxygen，Catalytic membrane，Palladium nanoparticles，Hybrid microgel
論文來源：期刊
具體來源：Chemical Engineering Journal
發表時間：2025年
在脫氧水制備領域，開發兼具高效性與低污染特性的催化劑仍面臨重大挑戰。本研究創新性地構建了一種新型復合催化膜，其通過親水性聚合物網絡實現鈀納米顆粒的高度分散與流體充分接觸暴露。基于動態過濾-可逆固定策略構筑的催化膜在制備與應用中展現出卓越的柔性特征。為此，本研究設計并搭建了柔性連續化水處理裝置用于評估催化膜除氧性能。實驗表明：在常溫條件下，當水停留時間為32.3秒時，三層復合催化膜可將水中溶解氧濃度降至10 ppb。這種獨特構型的催化膜可滿足實驗室裝置與儀器預處理等場景的便攜式與柔性除氧需求。
In de-oxygen water preparation, it is still a challenge to develop a highly efficient catalyst with less pollution on produced water. Herein, we invented a novel catalytic membrane, in which palladium nanoparticles were well dispersed and exposed sufficiently to the fluid with the help of hydrophilic polymer networks. These catalytic membranes created by dynamic filtration and reversible fixation offer exceptional flexibility in preparation and application. An apparatus for flexible and continuous chemical removal of dissolved oxygen from water was built up and applied to determine the performance of catalytic membranes. When the residence time was 32.3 s, the concentration of DO could be reduced to 10 ppb by a tri-layer catalytic membrane at ambient temperature. This uniquely configured catalytic membrane could be applied in portable and flexible DO requirements, such as experimental setups and pretreatment of instruments.
國家自然科學基金(資助號:22178317、22109138)資助。