Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 1, Pages 1658-1666Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b05426
Keywords
Chitin microsphere; Carbon nanofibers; Catalyst TiO2 nanoparticles; Pd nanoparticles; Degradation of volatile organic compounds
Categories
Funding
- Major Program of National Natural Science Foundation of China [21334005]
- Major International (Regional) Joint Research Project of National [21620102004]
- National Natural Science Foundation of China [51573143]
- Fundamental Research Funds for the Central Universities [2042018kf0042]
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Facing the serious air pollution caused by volatile organic compounds (VOCs), highly efficient degradation and removal of VOCs have attracted great attention. To develop efficient novel photocatalysts, Pd/TiO2 @ carbon nanofibrous microspheres were constructed by carbonizing the TiO2/chitin microspheres, followed by immobilizing Pd nanoparticles on the TiO2/carbon microspheres via a green pathway. The composite microspheres were composed of carbon nanofibers, on which TiO2 nanoparticles and ultrasmall Pd nanoparticles with mean size of 1 nm were well immobilized and distributed, supported by transmission electron microscope and elemental mappings results. The Pd/TiO2 @ carbon microspheres were used for the gas phase photodegradation of VOCs. The results demonstrated that the conversion of toluene and benzene to CO2 and H2O reached 96.4% and 91.7%, respectively, which were higher than the reported values in the literature. The combination of TiO2 and Pd nanoparticles played an important role on the enhancement of the catalytic activity. Moreover, the Pd/TiO2 @ carbon microspheres could be recycled and reused. This work provided a new strategy to eliminate VOCs, which was beneficial to a sustainable world.
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