首页|Microfluidic assembly of WO3/MoS2 Z-scheme heterojunction as tandem photocatalyst for nitrobenzene hydrogenation
Microfluidic assembly of WO3/MoS2 Z-scheme heterojunction as tandem photocatalyst for nitrobenzene hydrogenation
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Heterojunction-based photocatalyst plays an important role in the various heterogeneous catalyses.Z-scheme photocatalytic systems with two semiconductor materials are suitable for harvesting solar energy,while the advanced nanostructuring tools for the fabrication of Z-scheme heterojunction are limited.Here,WO3/MoS2(W/M0.2)heterojunction composites were constructed in a microfluidic system with enhanced assembly efficiency,and the photocatalytic performance has been investigated using X-ray photoelectron spectroscopy(XPS),Mott-Schottky(M-S)analysis and gas chromatograph-mass spectrometer(GC-MS).In addition,in the reduction of nitrobenzene,the photogenerated hole(h+)oxidation of formic acid(HCOOH)provides the hydrogen source and the deposited Pd nanoparticles are enriched with photo-generated electrons for improving the transfer hydrogena-tion efficiency.The microfluidic-prepared tandem photocatalyst gives a meaningful guidance for the design and synthesis of heterojunction catalysts,which is promising for energy maximizing control systems.
Tandem catalysisPhotocatalysisMicrofluidicsHeterojunctions
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