Three-dimensional ordered macroporous g-C3N4-Cu2O-TiO2 heterojunction for enhanced hydrogen production

نویسندگان

چکیده

In this study, a g-C3N4-Cu2O-TiO2 photocatalyst with novel three-dimensional ordered macroporous (3DOM) structure was successfully prepared using sacrificial template strategy and photodeposition method. The influence of the special porous cross pore channels on photocatalytic properties as-prepared sample studied in detail. Compared original (TiO2 3 wt% Pt), exhibited higher specific surface area more active sites, thus accelerating separation efficiency photogenerated electron-hole pair. Consequently, showed good performance, reaching maximum hydrogen production rate 12,108 µmol g−1 h−1 approximately five times than that pristine comparison sample. enhanced photoactivity heterojunction can be ascribed to its double p-n robust structure, where photodeposited Cu2O plays synergistic catalytic role process outer clad g-C3N4 layer prevents oxidation. Additionally, possible mechanism briefly discussed based experimental results. This work identifies viable pathways for developing low-cost photocatalysts highly efficient activity toward improved solar energy conversion.

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ژورنال

عنوان ژورنال: Science China. Materials

سال: 2021

ISSN: ['2095-8226', '2199-4501']

DOI: https://doi.org/10.1007/s40843-021-1714-9