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Published on: September 12, 2014
Facet synergy dominant Z-scheme transition in BiOCl with enhanced 1O2 generation
Chongshang Guan1, Tian Hou1, Wuyang Nie1
1MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Department of Applied Physics, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China.
Abstract:
BiOCl powders with different morphology were obtained through self-assembling. Their photocatalytic performance was tested through degradation of organic dye and mechanism of photocatalytic for obtained samples were investigated. Relevant characterization demonstrated that facet synergy was a main reason of photocatalytic performance promotion due to changed facet exposure and proportion under self-assembling. Theory and experimental analysis manifested that synergistic facet stimulated Z scheme transition in samples with lower (001) facet proportion, which provided favorable condition of 1O2 generation and simultaneously generated prominent charge separation. This work unveiled the facet synergy dominant photocatalytic performance improvement in self-assembling system of BiOCl and verified decisive role of facet proportion in constructing Z-scheme facet junction, which also prompted possibility of improving 1O2 generation through facet engineering under self-assembling.
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