Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing, 400715, PR China; Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, 400715, PR China.
Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing, 400715, PR China; Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, 400715, PR China.
Chemosphere. 2020 Apr;244:125462. doi: 10.1016/j.chemosphere.2019.125462. Epub 2019 Nov 25.
A series of AgPO/g-CN nanocomposites were synthesized by introducing various small amount of AgPO in g-CN and subsequently employed for decomposing formaldehyde (HCHO) in continuous flow as photocatalysts. The results show that all the AgPO/g-CN nanocomposites could perform a very stable photoactivity for degrading continuously flowing gaseous formaldehyde for at least 600 h. Especially, the HCHO degradation rate reached 22.4% by using 1AP-CN, which was 2.63 times as fast as that of g-CN. Our results reveal that the photoinduced electrons in conduction band (CB) are trapped by O to yield ⋅O, while holes in valence band (VB) directly oxidize -OH and/or water to produce ·OH under visible light irradiation. As a consequence, HCHO is further oxidized to CO and HO by as-generate active species.
一系列的 AgPO/g-CN 纳米复合材料通过在 g-CN 中引入不同量的 AgPO 而被合成，并随后作为光催化剂用于分解连续流动的甲醛（HCHO）。结果表明，所有的 AgPO/g-CN 纳米复合材料在连续流动的气态甲醛降解方面都表现出非常稳定的光活性，至少可以持续 600 小时。特别是，使用 1AP-CN 时，HCHO 的降解率达到 22.4%，是 g-CN 的 2.63 倍。我们的结果表明，价带（VB）中的光致空穴直接氧化-OH 和/或水生成·OH，而导带（CB）中的光生电子被 O 捕获生成 ⋅O。因此，HCHO 进一步被生成的活性物质氧化为 CO 和 HO。
