Integrating boron atoms into ultrathin organic polymer for visible light photocatalytic CO2 reduction to CH4 with nearly 100% selectivity

作者：Hou, Linquan; Tang, Guoen; Huang, Hao; Yin, Shiheng; Long, Bei; Ali, Atif; Deng, Guo-Jun; Song, Ting^*

来源：Journal of Materials Chemistry A, 2022, 10(10): 5287-5294.

DOI：10.1039/d1ta09558g

• GRAPHITIC CARBON NITRIDE
• PHOSPHORUS
• FRAMEWORK
• NITROGEN
• HYBRID

Organic polymer materials, a promising type of photocatalyst, are still restricted by insufficient and poorly distributed active sites. Herein, a series of ultrathin organic polymers with boron as the active site is developed by regulating the B-containing framework. Compared with other monomers, 1,4-benzenediboronic acid is bonded with hexachlorocyclotriphosphazene to form a compact active site layout in the ultrathin organic polymers (CPB), thus promoting carrier transport and prompting CO2 activation. Without a cocatalyst and photosensitizer, the CPB samples deliver nearly 100% selectivity and a CH4 evolution rate of 1115.8 mu mol g(-1) (B-free polymer: no activity) under visible light illumination, while maintaining stability (30 h), surpassing many reported photocatalysts. This work provides an efficient way to promote efficient solar energy conversion by weaving metal-free B atoms in a reasonable layout.

• 单位
  湘潭大学