海藻酸鈉中空纖維馬達(dá)的設(shè)計(jì)、運(yùn)動(dòng)調(diào)控及染料降解應(yīng)用

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中圖分類(lèi)號(hào)：TB333文獻(xiàn)標(biāo)志碼：A

文章編號(hào)：1673-3851（2025）07-0469-11

引用格式：，．海藻酸鈉中空纖維馬達(dá)的設(shè)計(jì)、運(yùn)動(dòng)調(diào)控及染料降解應(yīng)用[J].浙江理工大學(xué)學(xué)報(bào)（自然科學(xué)），2025，53（4）：469-479.

Abstract： Coaxial fibers were prepared by coaxial wet spinning of sodium alginate （SA） and SA/Fe3O4 loaded with Fe3O4 ，and SA@Pt and SA/Fe3O4@Pt hollow fiber motors were obtained by wet chemically depositing platinum （ Pt ） nanoparticles onto the inner wall of the hollow fibers. The morphology and structural composition of the hollow fiber motors were characterized using SEM， XRD，and FTIR. The motion behavior of the holow fiber motors was regulated，and their eficacy on pollutant degradation was evaluated. The results demonstrated that hollow fiber motors containing Pt nanoparticles could achieve autonomous motion in H2O2 ． The motion speed of could reach 2.1mm/s as the mass fraction of H2O2 was 2% ， showing good motion performance. Furthermore， the motion modes of the SA （20 hollow fiber motors could be modulated by adjusting the shape of the ports and the length of the hollow fibers，resulting in both linear and rotational movement patterns. When guided by an external magnetic field，the SA/Fe3O4@Pt motor could move along a predetermined path， including forming complex trajectories such as 'ZSTU′ ， showcasing its versatile movement and high precision control. Finally，the SA/Fe3O4@Pt achieved a 93.4% and 87.9% degradation rate of malachite green and Rhodamine B within 120mins ，with consistent performance over three cycles. This study provides new insights into the design and application of sodium alginate-based hollow fiber motors for eficient polutant degradation.

Key words： sodium alginate；holow fiber motors； coaxial spining; magnetic drive； bubble drivecontaminant degradation

0 引言

微納米馬達(dá)（Micro/nanomotors，MNM）是一種可以將化學(xué)能（化學(xué)燃料）或外部刺激（光、電、磁和超聲波等）轉(zhuǎn)化為機(jī)械能的微小裝置[1。（剩余19220字）