Fabrication of In(OH)3–In2S3–Cu2O nanofiber for highly efficient photocatalytic hydrogen evolution under blue light LED excitation. (22nd March 2023)

• Record Type: Journal Article
• Authors: Chang, Yu-Cheng; Syu, Shih-Yue; Lu, Ming-Yen
• Is Part Of: International journal of hydrogen energy. Volume 48:Number 25(2023)
• Page Start: 9318
• Page End: 9332
• Publication Date: 2023-03-22
• Subjects: In(OH)3–In2S3 Nanosheet -- Hydrothermal -- Wet Chemical -- Electrospinning -- In(OH)3–In2S3–Cu2O Nanofiber -- Photocatalytic Hydrogen Production; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.12.114
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: This study synthesized the In(OH)3 –In2 S3 nanosheet via a simple hydrothermal method. The different amounts of In(OH)3 –In2 S3 nanosheet used to synthesize In(OH)3 –In2 S3 –Cu2 O composite by a wet chemical method. FESEM, FETEM, XRD, XPS, BET, UV–vis DRS, and PL spectroscopy characterized the In(OH)3 –In2 S3 –Cu2 O composite. Compared with In(OH)3 –In2 S3 nanosheet, In(OH)3 –In2 S3 –Cu2 O composite can exhibit the synergistic effects of higher specific surface area, higher light-harvesting capacity, and accelerating the separation and migration of photogenerated charge carriers. In addition, In(OH)3 –In2 S3 –Cu2 O nanofiber was fabricated via a facile electrospinning process at the different amounts of In(OH)3 –In2 S3 nanosheet. The manufacturing process offers many advantages, such as simplicity, low temperature, and without templates. The effect of operational parameters (such as the reaction conditions of photocatalysts, pH values, sacrificial reagents, and light sources) on the photocatalytic hydrogen production of In(OH)3 –In2 S3 –Cu2 O nanofiber was investigated. The results indicate that the appropriate reaction conditions of In(OH)3 –In2 S3 –Cu2 O nanofiber can reveal higher efficient photocatalytic water splitting than commercial TiO2 or ZnO nanofiber under blue light LED excitation. Furthermore, In(OH)3 –In2 S3 –Cu2 O nanofiber can provide a simple fabrication process, high photocatalytic activity, and high reusability shall be beneficial for the practical application of photocatalytic hydrogen production. Graphical abstract: Image 1 Highlights: In2 S3 –In(OH)3 –Cu2 O nanofiber (NF) was prepared using the electrospinning method. In2 S3 –In(OH)3 –Cu2 O NF exhibited enhanced photocatalytic activity for H2 evolution. The HER of In2 S3 –In(OH)3 –Cu2 O NF is 14.5 times higher than In(OH)3 NF. Cu2 O nanoparticles can enhance charge-carries separation and transfer efficiency. The mechanism for the photocatalytic H2 production with In2 S3 –In(OH)3 –Cu2 O was explained.