@article{Luo2026, 
author = {Jiajin Luo and Zhuoli Deng and Wenxiu Liu and Weizhao Ling and Junning Li and Junshi Huang and Xiaowei Zhou and Yakun Guo and Wei Xie and Fei Ye and Gao Cheng},
title = {Quenching-treated β-MnO2 Nanorods: Enhanced Catalytic Performance in Selective Oxidation of Cinnamyl Alcohol},
year = {2026},
journal = {Journal of Guangdong University of Technology},
volume = {43},
number = {4},
pages = {22-29},
keywords = {β-MnO2, quenching, oxygen vacancy, cinnamyl alcohol, catalytic oxidation},
url = {https://www.sciopen.com/article/10.12052/gdutxb.250091},
doi = {10.12052/gdutxb.250091},
abstract = {In this research, β-MnO2 nanorods enriched with surface oxygen vacancies were successfully fabricated through a facile quenching strategy using pristine β-MnO2 nanorods as the precursor. The quenched samples were applied as the catalysts for the selective oxidation of cinnamyl alcohol to cinnamaldehyde. By varying the calcination temperature, the influence of surface structure of quenched β-MnO2 nanorods on their catalytic performance was investigated.The results showed that the catalytic activities of quenched β-MnO2 nanorods were significantly better than those of the precursor and naturally cooled β-MnO2 nanorods after calcination. Notably, the β-MnO2 nanorods calcined at 350 ℃ followed by rapid cooling achieved the highest catalytic performance, with a cinnamyl alcohol conversion of 53.1% and a cinnamaldehyde selectivity of 95.2%, outperforming several commercial non-noble metal oxides. Various physicochemical characterizations demonstrated that the quenching technique could enhance the surface lattice oxygen activity and oxidation ability of β-MnO2 nanorods, thereby effectively boosting their catalytic oxidation performance. This work demonstrates that quenching technique has a positive effect on increasing the surface oxygen vacancy concentration and catalytic performance of MnO2, which offers an effective strategy for designing the high-efficiency non-noble metal oxide catalysts.}
}