Self-cleaning, antimicrobial ultrafiltration membranes are urgently needed to alleviate the low flux problems caused by membrane fouling in water treatment processes. In this study, generated nano-TiO MXene lamellar materials were synthesized and then 2D membranes were fabricated using vacuum filtration. The presence of nano TiO particles as an interlayer support layer widened the interlayer channels, and also improved the membrane permeability. The TiO/MXene composite on the surface also showed an excellent photocatalytic property, resulting in enhanced self-cleaning properties and improved long-term membrane operational stability. The best overall performance of the TiO/MXene membrane at 0.24 mg cm loading was optimal, with 87.9% retention and 211.5 L m h bar flux at a filtration of 1.0 g L bovine serum albumin solution. Noticeably, the TiO/MXene membranes showed a very high flux recovery under UV irradiation with a flux recovery ratio (FRR) of 80% as compared to the non-photocatalytic MXene membranes. Moreover, the TiO/MXene membranes demonstrated over 95% resistance against . And the XDLVO theory also showed that the loading of TiO/MXene slowed down the fouling of the membrane surface by protein-based contaminants.
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http://dx.doi.org/10.1039/d3ra02230g | DOI Listing |
Environ Sci Technol
November 2024
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
Two-dimensional transition metal carbides and nitrides (MXenes) and MXene-based membranes hold promise for applications including water purification and seawater desalination; however, their environmental behavior and fate in these matrices remain unknown. In this study, we systematically assessed the reaction efficiencies of TiCT at varying important environmental conditions. Our experiments revealed that copper and iron ions accelerated the oxidation rate of TiCT 55.
View Article and Find Full Text PDFJ Colloid Interface Sci
February 2025
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University Changchun 130012, PR China. Electronic address:
The industrialization of hydrogen production technology through polymer electrolyte membrane water splitting faces challenges due to high iridium (Ir) loading on the anode catalyst layer. While rational design of oxygen evolution reaction (OER) electrocatalysts aimed at effective iridium utilization is promising, it remains a challenging task. Herein, we present exfoliated TiCT MXene as a highly conductive and corrosion-resistant support for acidic OER.
View Article and Find Full Text PDFAnal Chem
October 2024
Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
Adv Sci (Weinh)
September 2024
Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608, Taiwan.
Triboelectric nanogenerators (TENGs) have become reliable green energy harvesters by converting biomechanical motions into electricity. However, the inevitable charge leakage and poor electric field (EF) of conventional TENG result in inferior tribo-charge density on the active layer. In this paper, TiO-MXene incorporated polystyrene (PS) nanofiber membrane (PTMx NFM) charge trapping interlayer is introduced into single electrode mode TENG (S-TENG) to prevent electron loss at the electrode interface.
View Article and Find Full Text PDFHeliyon
May 2024
School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, 230601, China.
We present an innovative methodology for the synthesis of MXene membranes through a dual-stage process involving etching and subsequent thermal self-crosslinking. A molar ratio of 1 (Al):9 (F) using HCl/LiF was employed to convert raw TiAlC (MAX phase) into MXene within 48 h at 40 °C. This procedure predominantly yielded monolayers distinguished by diameters exceeding 500 nm, elevated crystallinity and a high overall yield.
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