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Robust nanoporous Cu/TiO_(2) ceramic filter membrane with promoted bactericidal function

Science China(Technological Sciences) 2022年第11期65卷 2687-2694页

作者： ZHOU Li SHI ChunYing XU XiaoHong JIA ChuanCheng Center of Single-Molecule Sciences Institute of Modern OpticsFrontiers Science Center for New Organic Matter Tianjin Key Laboratory of Micro-scale Optical Information Science and TechnologyCollege of Electronic Information and Optical EngineeringNankai UniversityTianjin300350.China School of Chemistry and Chemical Enginering Shandong UniversityJinan 250100China

filter membrane technology has been extensively used for water purification.However,due to their high brittleness and biological fouling,filter membranes will gradually deteriorate.Here we develop a robust Cu/TiO_(2) ceramic filter membrane for water treatment,which has excellent inherent antibacterial activities both in the dark and under visible light irradiation.Onedimensional nanobelt TiO_(2) can be sintered into a nanoporous membrane structure by overlapping and interweaving with each other,thereby achieving high flux simultaneously and solving the problem of high brittleness of inorganic ceramics.Meanwhile,such one-dimensional TiO_(2) nanostructures can provide more deposition sites for Cu nanoparticles with inherent antibacterial activity in the dark.To realise the surface plasmon resonance-enhanced antibacterial activity under visible light,Cu/TiO_(2) heterostructures are used.

关键词： filter membrane one-dimensional TiO_(2) Cu/TiO_(2)heterostructure antibacterial activity

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Integration of filter membrane and Ca_(2)Nb_(3)O_(10) nanosheets for high performance flexible UV photodetectors

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Journal of Materials Science & Technology 2022年第34期129卷 108-114页

作者： Yong Zhang Fa Cao Siyuan Li Xinya Liu Lixing Kang Limin Wu Xiaosheng Fang School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China Department of Materials Science Fudan UniversityShanghai 200433China Division of Advanced Materials Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123China College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021China

We report that the integration of filter membrane and Ca_(2)Nb_(3)O_(10)nanosheets(FM@CNO) UV photodetector(UV PD) shows high performance and excellent flexibility. The Ca_(2)Nb_(3)O_(10)nanosheets were prepared by a facile solid-state reaction and liquid exfoliation process. The Ca_(2)Nb_(3)O_(10)nanosheets can be integrated into the pores of a filter membrane via a simple vacuum filtration method. The FM@CNO UV PD shows high performance under 300 nm light illumination at 5 V bias, including high responsivity(0.08 AW^(-1)), high detectivity(1.1 × 10^(12)Jones), high UV/visible rejection ratio(3.86 × 10^(3)) and fast speed(0.12/1.24 ms). Furthermore, the FM@CNO device exhibits excellent flexibility after many bending cycles.In addition, the FM@CNO array device was used as a pixel array detector for UV imaging. This work provides a novel approach to achieve high performance flexible PDs based on filter membrane and two dimensional materials.

关键词： UV photodetector Ca_(2)Nb_(3)O_(10)nanosheets filter membrane Flexible

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Removal of 17β-Estradiol by Nylon filter membrane: Adsorption Mechanism,pH Effect,Temperature Influence and Spectrofluorimetric Analysis

Removal of 17β-Estradiol by Nylon Filter Membrane: Adsorpti...

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2011 World Congress on Engineering and Technology(CET 2011)

作者： Edward P.C.Lai Department of Chemistry Ottawa-Carleton Chemistry Institute Carleton University l125 Colonel By DriveOttawaOntario K1S 5B6Canada

Purification of drinking water for marketing presents a need for efficient removal of 17β-estradiol（E2）and other potentially harmful chemical contaminants.The nylon membrane,mounted inside a filter,has good potential for use as an adsorbent that provides a low-cost technology for the removal of E2.Experimental results showed that pH 5 is optimal for the adsorption of E2 onto a nylon membrane.E2 adsorption also increased with decreasing temperature（down to 4oC）. Adsorption efficiency was high at all filtration rates（up to 5.4 mL min-1）to protect the consumer from health risks.Hence,E2 enrichment on nylon membrane can be proposed as a simple method for rapid quantification by spectrofluorimetry（λem= 310 nm,λex=279 nm）.

关键词： 17β-estradiol nylon filter membrane adsorption binding spectrofluorimetry

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EFFECTS OF filter membraneS ADSORBING INFLAMMATORY MEDIATORS IN HEMOFILTRATI ON

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Journal of Pharmaceutical Analysis 2004年第2期16卷 164-166,187页

作者：蒋红利薛武军尹爱萍李大庆鞠峰炽孔澍 Hemodialysis Center First Hospital of Xi'an Jiaotong University Xi'an 710061 China Department of Biomedical Engineering XianJiaotong UniversityXian710053China

Objective In this study, an in vitro hemofiltration model was set up to investigate adsorptive saturati on time of different membrane under different blood flow rate (Q B)and filt rate rate(Q F). Methods Anticoagulated cattle blood (2000 mL per bag) was stimulated with 1μg·mL -1 endotoxin to induce i nflammatory mediators before hemofiltration (HF) using AN69, PS and PMMA filters in vitro. Adsorptive saturation time of membrane was observed using data br idge in different Q B and different Q F. TNF was measured by radioimmu noassays. Results Before the resistance level reached the peak value in the same group, resistance level increased significantly (P05). It was suggested tha t the resistance level reached plateau at 150,120,90,120, and150 minutes in Q F of 100 mL·minute -1, 200 mL·minute -1, 300 mL·minute -1 , respectively and in Q F of 1L·hour -1, 2L·hour -1, 4L·hour -1, respectively. And with the Q B and Q F increasing, resistanc e level increased significantly (Pmembrane resis tance level online measured by Data Bridge can instantly reflect the degree of m embrane adsorption. Adsorptive saturation time of filter membrane in different f iltration flow rate and blood flow rate are different.

关键词： hemofiltration inflammatory mediator adsorption filter membrane

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