An optimized oxygen activity of catalysts can facilitate oxidation of volatile organic compounds. This work shows the first construction of Ce–Co oxide thin–walled nanoboxes. Bulk–phase lattice oxygen is activated by metal–metal interactions. The subsequent uniform dispersion of low loaded Pt nanoparticles further enhances the surface–adsorbed oxygen content, and creates an oxygen–rich reaction interface. Competitive adsorption of water vapor was also inhibited, and complete catalytic oxidation of toluene was achieved at low temperature (T₉₀=140 °C). A diffuse reflectance infrared Fourier–transform spectroscopy probe was used to investigate the adsorption–catalytic process and the possible synergistic catalytic mechanism (Langmuir–Hinshelwood and Mars–van Krevelen). This work provides a strategy for improving the catalyt Crystal structure ic oxidation performance of nanocatalysts for volatile organic compounds by increasing the catalytic oxygen activity.

催化剂的优化氧活性可以促进挥发性有机化合物的氧化。这项工作展示了首次构建 Ce-Co 氧化物薄壁纳米盒。体相晶格氧被金属-金属相互作用激活。随后低负载 Pt 纳米粒子的均匀分散进一步提高了表面吸附的氧含量，并产生了富氧反应界面。水蒸气的竞争吸附也受到抑制，在低温下实现甲苯的完全催化氧化（T ₉₀=140°C）。漫反射红外傅里叶变换光谱探针用于研究吸附催化过程和可能的协同催化机制（Langmuir-Hinshelwood 和 Mars-van Krevelen）。这项工作为通过提高催化氧活性来提高纳米催化剂对挥发性有机化合物的催化剂晶体结构的氧化性能提供了一种策略。