Silvered TiO2 for Facet-Dependent Photocatalytic Denitrification
Source abstract
Abstract
In this paper, the influence of exposed facets of silvered TiO2 photocatalysts for photodenitrification was fundamentally investigated. We found that photodeposition of silver on 001-faceted TiO2 was prone to form Ag/Ag2O/001-TiO2 triple junctions. Comparatively, oxygen vacancies in 101-faceted TiO2 alleviated the oxidation rate, which contributed to the formation of a junctioned interface between TiO2 and metallic Ag0. Benefiting from the Z-scheme charge transfer pathway mediated by adjacent Ag, the nitrate reduction rate and N2 selectivity for Ag2O/Ag/101-TiO2 reached 99.1 and 81.1%, respectively, which were much higher than those of silvered 001-TiO2 and P25. In this work, we prepared TiO2-based photocatalysts with specific exposed crystal facets and good crystallinity at the heterogeneous interface for denitrification applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
University of Chinese Academy of Sciences, Beijing 100049, China
Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
Funding
National Natural Science Foundation of China · Excellent Innovation Project of Research Center for Eco-Environmental Sciences
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