Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 1, Pages 2033-2043Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c19414
Keywords
molecular oxygen activation; reactive oxygen species; titanium oxide; oxygen vacancies; interfacial engineering
Funding
- NSFC of China [21761142011, 21876114, 51572174]
- Shanghai Government [17SG44, 18DZ2254200, 18JC1412900]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Singapore National Research Foundation [NRF2017NRF-NSFC001-007]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1269]
Ask authors/readers for more resources
The novel method introduces a way to activate O-2 spontaneously through interfacial oxygen vacancies on carbon-coated TiO2-x, generating reactive oxygen species with versatile applications. The reactive oxygen species exhibit excellent performance in oxidation reactions and inhibition of MCF-7 cancer cells, providing new insight into the effective utilization of O-2 via oxygen vacancies on metal oxides.
The effective activation and utilization of O-2 have always been the focus of scientists because of its wide applications in catalysis, organic synthesis, life and medical science. Here, a novel method for activating O-2 spontaneously via interfacial oxygen vacancies on carbon-coated TiO2-x to generate reactive oxygen species (ROS) with versatile applications is reported. The limerammai interfacial oxygen vacancies can be stabilized by the carbon layer and hold its intrinsic properties for spontaneous oxygen activation without light irradiation, while common surface oxygen vacancies on TiO2-x are always consumed by the capture of H2O to form the surface hydroxyls. Thus, O-2 absorbed at the interface of carbon and TiO2-x can be directly activated into singlet oxygen (O-1(2)) or superoxide radicals (center dot O-2(-)), confirmed both experimentally and theoretically. These reactive oxygen species exhibit excellent performance in oxidation reactions and inhibition of MCF-7 cancer cells, providing new insight into the effective utilization of O-2 via oxygen vacancies on metal oxides.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available