Flexible chemical removing dissolved oxygen from water by nano-palladium hybrid microgel filled membrane
writer：Tangxin Zhang，Hao Zhang，Tiantian Zhu，Yuhua Mao，Jiayuan Wang，Lingyu Zhu，Jianli Wang
keywords：Dissolved oxygen，Catalytic membrane，Palladium nanoparticles，Hybrid microgel
source：期刊
specific source：Chemical Engineering Journal
Issue time：2025年
在脫氧水制備領(lǐng)域，開發(fā)兼具高效性與低污染特性的催化劑仍面臨重大挑戰(zhàn)。本研究創(chuàng)新性地構(gòu)建了一種新型復(fù)合催化膜，其通過親水性聚合物網(wǎng)絡(luò)實(shí)現(xiàn)鈀納米顆粒的高度分散與流體充分接觸暴露?；趧討B(tài)過濾-可逆固定策略構(gòu)筑的催化膜在制備與應(yīng)用中展現(xiàn)出卓越的柔性特征。為此，本研究設(shè)計(jì)并搭建了柔性連續(xù)化水處理裝置用于評估催化膜除氧性能。實(shí)驗(yàn)表明：在常溫條件下，當(dāng)水停留時間為32.3秒時，三層復(fù)合催化膜可將水中溶解氧濃度降至10 ppb。這種獨(dú)特構(gòu)型的催化膜可滿足實(shí)驗(yàn)室裝置與儀器預(yù)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(xué)基金(資助號:22178317、22109138)資助。