High-performance Yb, N, P-tridoped anatase-TiO2 nano-photocatalyst with visible light response by sol-solvothermal method

Microwave-assisted hydrothermal synthesis of Nd, N, and P tri-doped TiO2 from TiCl4 hydrolysis and synergetic mechanism for enhanced photoactivity under simulated sunlight irradiation

“…4b. The XPS peak in the P 2p 3/2 region appears at 133.0 eV, suggesting that P exists in the pentavalent oxidation state (P 5 þ ) [5]. The doped P 5 þ probably replace the Ti 4 þ in TiO 2 lattice, forming a Ti-O-P linkage, instead of in the form of phosphate anion ( PO 4 3− ) [5][6][7].…”

“…The broad absorption bands around 3439 cm À 1 in the FTIR spectra for all the samples are attributed to overlapping asymmetric and symmetric À OH stretching vibrations of weakly bound water molecule and associated surface hydroxyl groups [30]. The peaks around 1636 cm À 1 are related to ÀOH bending vibrations of adsorbed water molecules [5][6][7][8]. As for NdPTO and NdNPTO, the absorption peaks at 1037 cm À 1 are observed in their FTIR spectra, but are absent for the samples without P-doping such as TO and NdNTO, which are assigned to Ti-O-P stretching modes [6,7].…”

Effect of Cu-doping on the visible photocatalytic performance of Cu<sub>2</sub>O immersion-plated on silicon nanoporous pillar array

“…为将TiO 2 的有效激发光波长从紫外光扩展至可 见光范围, 人们尝试通过元素掺杂/共掺杂 [6] 、粒子改 性 [7,8] 、 染料敏化 [9,10] 等多种方法对其电子结构进行改 造, 以期实现对太阳光全波段的利用. 通过上述方法 改造后, 虽然TiO 2 产生电子-空穴对所需波段范围有 所扩展, 但距离实际光催化过程对其性能的要求依 然存在较大差距, 而且掺杂和改性还带来了材料稳 定性变差等问题 [6,11] . 因此, 依据材料的电子结构特 解作用 [12] ; 以硫酸铜为铜源、 采用恒温水浴液相法制 备的Cu/Cu 2 O核壳结构对结晶紫表现出良好的光催 化降解性能 [13] ; 以半胱氨酸作为连接剂, 用 CuCl 2 ,…”

Investigating the synergy of integrated anaerobic digestion and photodegradation using hybrid photocatalyst for molasses wastewater treatment

“…This process, however, is ineffective for the removal of the high organic content of MWW and has, therefore, been recommended for application as a plausible post-treatment to AD (Otieno et al 2016). Moreover, the widely used semiconductor oxide photocatalyst titanium (TiO 2 ) and zinc (ZnO) despite having desirable properties such as low cost, chemical stability, and high resistance to photo-corrosion, still suffer from low quantum efficiency due to the rapid recombination of electron-hole pairs (Bechambi et al 2015a;Jiang et al 2013). The generated electrons react with water molecules leading to the production of highly reactive hydroxyl radicals (OHÁ), which initiate micropollutant degradation in addition to direct hole attack (Arany et al 2014).…”