Preparation of carbon/Fe-doped g-C3N4 and study on its photocatalytic hydrogen production performance

Abstract

With the large consumption of non-renewable energy, energy shortage has become a major challenge to human society. Among many new energy production technologies, photocatalytic hydrogen production from water can be realized by using abundant solar energy as the driving force, and the conditions of hydrogen production are mild, green and pollution-free, it is considered one of the effective technologies to solve the current energy shortage crisis. The core of photocatalytic hydrogen production is photocatalyst, therefore, the study of efficient, stable and cheap photocatalysts has become a hot spot. Two-dimensional layered g-C3N4 has become an important photocatalytic material in recent years because of its suitable band gap, its response in the visible light band and its chemical and thermal stability. Due to the high rate of photogenerated electron-hole recombination and the slow rate of photoreaction of g-C3N4, the addition of [Fe2(HMOPIP)6]·8H2O·10OH to regulate g-C3N4 forming carbon/Fe-doped g-C3N4, it can reduces the recombination efficiency of photogenerated electron-hole and improves photocatalytic activity. Through hydrogen production experiment, we can see that, compared with g-C3N4, the carbon/Fe-doped g-C3N4 has better electron-hole separation ability and photocatalytic hydrogen production performance, with the hydrogen production rate of the carbon/Fe-doped g-C3N4 being approximately 5.92-fold higher than g-C3N4.