Phosphate-modified graphitic C3N4 as efficient photocatalyst for degrading colorless pollutants by promoting O2 adsorption
Phosphate-modified graphitic C3N4 as efficient photocatalyst for degrading colorless pollutants by promoting O2 adsorption
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DOI：
10.1039/c3cc47398h
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发表时间：
2014-01-01
影响因子：
4.9
通讯作者：
Li, Chengming
中科院分区：
文献类型：
--
作者：
Liu, Chong;Jing, Liqiang;Li, Chengming
磷酸改性后的氮化石墨光催化剂对气相乙醛和液相苯酚的光催化降解活性显著提高，这是由于其表面吸附的O-2明显增加，从而延长了光催化剂的寿命，提高了光生载流子的分离能力。这是基于O-2程序升温脱附曲线，稳态表面光电压谱，和时间分辨的表面光电压响应。
The photocatalytic activity for degrading gas-phase acetaldehyde and liquid-phase phenol by graphitic carbon nitride could be greatly improved after modification with phosphoric acid, which is attributed to the clear increase in adsorbed O-2 which prolongs the lifetime and enhances the separation of photogenerated charge carriers. This is based on O-2 temperature-programmed desorption curves, steady-state surface photovoltage spectra, and time-resolved surface photovoltage responses.