As one of the most common ferrous (Fe²⁺)-containing oxide minerals in the Earth’s crust, ilmenite (FeTiO₃) is a potential low-cost heterogeneous Fenton-like catalyst for organic wastewater treatment via catalytic wet peroxide oxidation (CWPO). However, it suffers from low activity and long induction time. Herein anisotropic FeTiO₃/C nanocomposite with rich Fe²⁺ ions on large surface area of 159.0 m² g⁻¹ (surface Fe/Ti and Fe²⁺/Fe³⁺ ratios were respectively 2.1 and 2.0) was prepared via cetyltrimethylammonium (CTA⁺)-assisted sol-gel synthesis. CTA⁺ modulated the growth of FeTiO₃ nanoparticles with more exposed metallic sites by preferential adsorption on its (104) plane via electrostatic attraction, provided the carbon source and facilitated the generation of more Fe²⁺ ions at the interface of FeTiO₃/C via carbothermal reduction of FeTiO₃. FeTiO₃/C efficiently catalyzed CWPO removal of six aromatic pollutants with different charges (25 mg L⁻¹ each) at 25 ^oC and pH 3.0 without an induction period owing to rich Fe²⁺ content on neutral surface (pH_pzc ~3.3)—three dye solutions completely decolorized in 1 h and three antibiotics degraded by >90% in 3 h. Reusability of FeTiO₃/C was demonstrated with cationic rhodamine B and anionic orange G dyes in five consecutive runs. Scavenging tests and spin-trapping EPR spectra confirmed the generation of dominant ·OH and minor O₂^•− species for organic degradation via catalytic decomposition of H₂O₂ on FeTiO₃/C as a heterogeneous Fenton-like catalyst.

作为地壳中最常见的含亚铁（Fe ^{2+ ）氧化物矿物之一，钛铁矿（FeTiO} ₃）是一种潜在的低成本非均相类芬顿催化剂，用于通过催化湿式过氧化物氧化（CWPO）处理有机废水。然而，它的活性低且诱导时间长。本文通过十六烷基三甲基铵(CTA)制备了在159.0 m ² g ^-1的大表面积上富含Fe ^{2+离子的各向异性FeTiO} ₃ /C纳米复合材料(表面Fe/Ti和Fe ²⁺ /Fe ^{3+比率分别为2.1和2.0)。 +} )-辅助溶胶-凝胶合成。CTA ^{+通过静电引力优先吸附在其（104）面上，调节了具有更多暴露金属位点的 FeTiO} ₃纳米颗粒的生长，提供了碳源，并通过促进 FeTiO ₃ /C界面上产生更多的 Fe 2+^离子FeTiO ₃的碳热还原。由于中性表面富含 Fe ^{2+含量（pH} _pzc ~3.3） ， FeTiO ₃ /C在 25  ^o C 和 pH 3.0 下有效催化 CWPO 去除六种不同电荷（每种 25 mg L ^-1 ）的芳香族污染物，无需诱导期—三种染料溶液在 1 小时内完全脱色，三种抗生素在 3 小时内降解>90%。FeTiO ₃ /C 的可重复使用性通过阳离子罗丹明 B 和阴离子橙色 G 染料在连续五次运行中得到证明。清除测试和自旋捕获EPR光谱证实了通过H ₂ O ₂在FeTiO ₃ /C上作为非均相类芬顿催化剂的催化分解，产生了主要的·OH和次要的O ₂ ^{•−物种，用于有机降解。}