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以凹凸棒石为骨架,通过两步法制备了Ag@AgBr/氮化碳–凹凸棒石复合脱硫光催化剂(Ag@AgBr/FCN–ATP)。研究表明:ATP表面形成了均匀的FCN膜,Ag@AgBr粒子均匀地负载在ATP–FCN表面。与Ag@AgBr相比,Ag@AgBr/FCN–ATP具有大的比表面积和高的可见光响应及分离光生空穴–电子能力。以二苯并噻吩(DBT)为目标硫化物,考察了在可见光下催化剂对DBT的氧化脱除能力。结果表明:Ag与DBT中的S形成σ配位键吸附作用,Ag@AgBr和FCN–ATP之间的异质结构和协同效应有效地促进光生电子的传输且抑制空穴–电子复合。当光照时间为180 min时,Ag@AgBr/FCN–ATP的脱硫率可达85.2%。
Ag @ AgBr / carbon nitride-attapulgite composite desulfurization photocatalyst (Ag @ AgBr / FCN-ATP) was prepared by the two-step method using attapulgite as the framework. The results show that a uniform FCN film is formed on the surface of ATP, and the Ag @ AgBr particles are uniformly loaded on the surface of ATP-FCN. Compared with Ag @ AgBr, Ag @ AgBr / FCN-ATP has a large specific surface area and high visible light response and separation of photogenerated hole-electron capacity. Dibenzothiophene (DBT) as the target sulfide, under the visible light catalyst DBT oxidation removal capacity. The results showed that Ag and DBT formed sigma-coordinate bonds, and the heterostructure and synergistic effect between Ag @ AgBr and FCN-ATP effectively promoted the photogenerated electron transport and inhibited the hole-electron recombination. The desulfurization rate of Ag @ AgBr / FCN-ATP reached 85.2% when the illumination time was 180 min.