Enhancement of Copper Catalyst Stability for Catalytic Ozonation in Water Treatment Using ALD Overcoating.
Wenwen YangZheng LuBernhard VoglerTingting WuYu LeiPublished in: ACS applied materials & interfaces (2018)
Atomic layer deposition (ALD) of alumina overcoating can significantly enhance the stability of copper oxide-based catalysts for catalytic ozonation of organic compounds in advanced water/wastewater treatment. The catalyst leaching was reduced by about 90% while high (up to 98%) activity was demonstrated in terms of total organic carbon (TOC) removal. Synchrotron X-ray absorption spectroscopy results indicated that the Al2O3 protecting layer passivated the under-coordinated copper sites, which were likely to be responsible for leaching.
Keyphrases
- wastewater treatment
- highly efficient
- oxide nanoparticles
- heavy metals
- high resolution
- room temperature
- ionic liquid
- metal organic framework
- antibiotic resistance genes
- reduced graphene oxide
- sewage sludge
- carbon dioxide
- municipal solid waste
- risk assessment
- single molecule
- computed tomography
- magnetic resonance
- mass spectrometry
- gold nanoparticles
- electron microscopy
- combination therapy
- anaerobic digestion
- transition metal