Rapid and energy-efficient preparation of boron doped g-C3N4 with excellent performance in photocatalytic H2-evolution

By Pengfei Chen, Pingxing Xing, Zhiqiang Chen, Hongjun Lin, Yiming He. International journal of hydrogen energy, 2018

159 citations recorded by the source corpus.

Abstract Microwaving heating method, which shows significantly higher efficiency in synthesis time and energy utilization than conventional heating method, was firstly applied to synthesize boron doped g-C3N4 (B-g-C3N4). Results demonstrated that B-g-C3N4 could be prepared in 35 min via the method. XRD and XPS analyses verified the successfully doping of B element into the structure of g-C3N4. The doped B improved the photoabsorption performance of g-C3N4. Meanwhile, it greatly hindered the annihilation of charge carriers, prolonging the lifetime of photogenerated electrons, and thereby resulting in the excellent photocatalytic activity. The optimal B-g-C3N4 exhibited a H2 production rate of 1439 and 400 μmol g−1 h−1 under simulated sunlight and visible light irradiation, respectively. This values are about 2.4 times higher than that of pure g-C3N4. This study offered an energy-efficient and rapid way for the synthesis of external atom doped g-C3N4 with high catalytic efficiency.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/42d1fdbc6ba5b1e4a06bab09db2506e376834cbd

Citations in the corpus

• Recent developments of doped g-C3N4 photocatalysts for the degradation of organic pollutants (2020, unknown): “Chen et al. (2018) synthesized boron-doped g-C3N4 in just 35minutes by microwave heating.”