Effective periodate activation by peculiar Cu2O nanocrystal for antibiotics degradation: The critical role of structure and underlying mechanism study

Li，Yubiao1; Wang，Jinpeng1; Wei，Zhenlun1; Li，Wanqing1; Duan，Wanqing1; Feng，Xuezhen2; Ma，Qiang1; Zhang，Qingwen1; Chen，Hong2; Wu，Xiaoyong1

2024-02-01

10.1016/j.apcatb.2023.123351

Applied Catalysis B: Environmental   影响因子和分区

0926-3373

Exploring efficient catalyst and unveiling relevant intrinsic mechanism for pollutants control based on periodate (PI) activation is urgently required. Herein, an effective catalyst CuO with peculiar exposed facets and crystal edges was firstly developed to activate PI towards antibiotic wastewater degradation. Intriguingly, CuO nanocrystals with {100}+ {111} co-exposed facets together with their shared crystal edges exhibited the intrinsic high catalytic activity, and 88.90% of tetracycline (20 mg L) could be rapidly degraded within 5 min with k= 0.378 min, which outperformed the {100}, {110}, {111} solely exposed ones or {100}+ {110}, {100}+ {110}+ {111} co-exposed ones. A comprehensive mechanism study revealed that the crystal edges of {100}/{111} in CuO nanocrystals are conducive to better electron transfer, charge separation, and PI adsorption properties, thus triggering highly efficient PI activation over other crystal edges exposed nanocrystals. Besides, {100}/{111} crystal edges in CuO crystal made the PI activation-induced antibiotic degradation change from the non-radical/radical mixed reaction to O (75.71%) dominated nonradical reaction. This work provides systematical insights into constructing effective catalysts for wastewater treatment via structure engineering.

Crystal edges Cu2O Fenton-like reaction Periodate Wastewater

SCI ; EI

英语

通讯

CHEMISTRY

2-s2.0-85173587998

Scopus

1.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,430070,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Li，Yubiao,Wang，Jinpeng,Wei，Zhenlun,et al. Effective periodate activation by peculiar Cu2O nanocrystal for antibiotics degradation: The critical role of structure and underlying mechanism study[J]. Applied Catalysis B: Environmental,2024,341.

Li，Yubiao.,Wang，Jinpeng.,Wei，Zhenlun.,Li，Wanqing.,Duan，Wanqing.,...&Wu，Xiaoyong.(2024).Effective periodate activation by peculiar Cu2O nanocrystal for antibiotics degradation: The critical role of structure and underlying mechanism study.Applied Catalysis B: Environmental,341.

Li，Yubiao,et al."Effective periodate activation by peculiar Cu2O nanocrystal for antibiotics degradation: The critical role of structure and underlying mechanism study".Applied Catalysis B: Environmental 341(2024).