2D/2D Mn0.5Cd0.5In2S4/g-C3N4 heterojunctions with controllable charge transfer pathways for effective photocatalytic H2 production and antibiotics removal
Source abstract
Abstract
The separation efficiency of photoinduced electron-hole pairs has an important function in photocatalytic reactions. In this work, the Mn xCd 1−xIn 2S 4 solid solutions with tunable band edge positions were fabricated by a facile hydrothermal route. Benefit from the regulation of band edge positions, the charge migration is regulated from type-I mechanism (MnIn 2S 4/g-C 3N 4 and CdIn 2S 4/g-C 3N 4) to type-II mechanism (Mn 0.5Cd 0.5In 2S 4/g-C 3N 4), which boosts the separation efficiency of charge carriers for photocatalytic reactions. The fabricated Mn 0.5Cd 0.5In 2S 4/g-C 3N 4 nanocomposites exhibit superior photocatalytic hydrogen production and tetracycline hydrochloride (TCH) photodegradation as compared to the g-C 3N 4 nanosheets, MnIn 2S 4, CdIn 2S 4, as well as the Mn 0.5Cd 0.5In 2S 4 solid solution. Based on the XPS test and the determination of band edge position, the type-II heterojunction photocatalytic mechanism is proposed to illustrate the transfer path of the charge carriers. This work offers a newfangled perspective for exploring an effective photocatalytic system.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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