TiO2-coated glass hollow fiber membranes: preparation and application for photocatalytic methylene blue removal

•TiO2-coated glass hollow fiber membrane is prepared via dip-coating process.•Photocatalytic process is applied to improve methylene blue removal degree.•Methylene blue removal rate reaches 98% within 8 h photocatalytic reaction.•The membrane with the removal degree of 92.3–93.6% exhibits long-term stability.