A facile and green method to prepare Ce-doped TiO₂ nanoparticles supported on porous glass beads is reported. An ion exchange process and subsequent calcination yielded Ce-doped TiO₂ nanoparticles with a mean size of 4.8 ± 0.3 nm. The nanoparticles were dispersed on the surface of porous glass beads. The addition of Ce enhanced the visible light absorption of the TiO₂ nanoparticles in the 400–500 nm spectral window. The band gap of the as-prepared catalyst was 2.80 eV. The Ce-doped TiO₂ nanoparticles immobilized on porous glass beads exhibited excellent photocatalytic activity for the visible-light-degradation of methyl orange (MO) and rhodamine B (RhB); with rate constants of 0.095 and 0.230 min⁻¹; respectively. The effects of Ce dosage; reaction duration; and initial solution pH on the conversion of MO and RhB dyes were investigated. The green synthesis and favorable photocatalytic activity makes the Ce-doped TiO₂ nanoparticles immobilized on porous glass an attractive alternative for the efficient degradation of organic pollutants.

报道了一种简便且绿色的方法来制备负载在多孔玻璃珠上的Ce掺杂的TiO ₂纳米粒子。离子交换过程和随后的煅烧产生平均尺寸为4.8±0.3 nm的Ce掺杂的TiO ₂纳米颗粒。纳米颗粒分散在多孔玻璃珠的表面上。Ce的添加增强了TiO ₂纳米颗粒在400–500 nm光谱窗口中的可见光吸收。所制备的催化剂的带隙为2.80eV。固定在多孔玻璃珠上的Ce掺杂的TiO ₂纳米颗粒对甲基橙（MO）和若丹明B（RhB）的可见光降解表现出优异的光催化活性。速率常数为0.095和0.230 min ^-1; 分别。Ce用量的影响；反应时间 考察了初始溶液pH对MO和RhB染料转化的影响。绿色合成和良好的光催化活性使固定在多孔玻璃上的Ce掺杂的TiO ₂纳米颗粒成为有效降解有机污染物的有吸引力的替代方法。