This work provides an engineering guide to construct active sites on TiO₂ nanorods (NRs) by coupling p-type black NiO nanoclusters (E_g = 1.42 eV) with rich crystal defects and match-up band structure for excellent solar photocatalysis. Photo-oxidation of toluene was used as a model reaction to evaluate the photocatalytic performance of black NiO/TiO₂ hybrids under simulated solar light irradiation from a 300 W Xe-lamp. The black NiO/TiO₂ hybrids Exhibit 80% of photodegradation conversion and 56% of mineralization efficiency, which are 7.9 and 4.5 times higher than those of TiO₂ NRs. Detailed characterizations reveal that highly dispersed NiO and p-n heterojunction effectively facilitate light-harvesting, separation and transfer of photo-generated charge carries, and significantly inhibit the recombination of electrons and holes. Furthermore, the realignment of band structure and the p-n heterojunctions in NiO/TiO₂ result in the production of O₂⁻ and h⁺ with a longer lifetime, which could efficiently attack the aromatic ring of toluene. The efficient adsorption of toluene by H-bonding formation also facilitates the photo-oxidation of toluene on NiO/TiO₂.

这项工作为通过将 具有丰富晶体缺陷和匹配带结构的p型黑色NiO纳米团簇（E _g = 1.42 eV）耦合而在TiO ₂纳米棒（NRs）上构建活性位点提供了工程指导。甲苯的光氧化用作模型反应，以评估在300 W Xe灯模拟太阳光照射下黑色NiO / TiO ₂杂化物的光催化性能。黑色的NiO / TiO ₂杂化物表现出80％的光降解转化率和56％的矿化效率，分别是TiO ₂ NRs的7.9和4.5倍。详细的表征表明，高度分散的NiO和p- ñ异质结有效促进捕光，分离和光生电荷的传输中携带，并显著抑制电子和空穴的再结合。此外，带结构的重排和p - ñ以NiO /异质结的TiO ₂在生产的结果ö ₂ ^-和H ⁺与更长的寿命，这可能有效地攻击甲苯的芳族环。通过H键形成对甲苯的有效吸附还促进了甲苯在NiO / TiO ₂上的光氧化。