Abstract
A novel composite photocatalyst based on Cu2ZnSnS4 (CZTS) powders was synthesized and investigated for use as a photocatalyst. CZTS powders were first made using a conventional hydrothermal method and were then used to grow silver nanoparticles hybridized onto the CZTS under various conditions through a microwave-assisted hydrothermal process. After the obtained samples were subsequently mixed with 1T-2H MoS2, the three synthesized component samples were characterized using X-ray diffractometry (XRD), scanning electron microscopy, transmission electron microscopy (FE-SEM, FE-TEM), UV-visible spectroscopy (UV-Vis), Brunauer-Emmet-Teller (BET), photoluminescence spectroscopy (PL), and X-ray photoelectron spectroscopy (XPS). The resulting samples were also used as photocatalysts for the degradation of methylene blue (MB) under a 300 W halogen lamp simulating sunlight with ~5% UV light. The photodegradation ability was greatly enhanced by the addition of Ag and 1T-2H MoS2. Excellent photodegradation of MB was obtained under visible light. The effects of material characteristics on the photodegradation were investigated and discussed.
Highlights
A photocatalytic technique is considered a promising method for treating organic dyes in wastewater [1,2]
Ag was added in the structure to extend the light absorption of the photocatalyst to the visible light region, which was due to the surface plasmon resonance of Ag NPs, which enabled the photocatalyst to absorb light in the visible spectrum
Powder are summarized as Cu2 S + SnS2 + ZnS → Cu2 ZnSnS4. It is necessary for the excess thiourea concentration to be a homogeneous solution in order to effectively induce a self-assembly reaction through the conventional hydrothermal (CHT) method [4]
Summary
A photocatalytic technique is considered a promising method for treating organic dyes in wastewater [1,2]. GO–Ag3 PO4 nanocomposites have been synthesized as an excellent hybrid photocatalyst [16,17] They exhibit enhanced visible light photocatalytic activity, and show better stability and durability than their counterparts. Ag was added in the structure to extend the light absorption of the photocatalyst to the visible light region, which was due to the surface plasmon resonance of Ag NPs, which enabled the photocatalyst to absorb light in the visible spectrum Owing to these outstanding characteristics, we report a novel design of three-component. Ag/hybridized CZTS/1T-2H MoS2 heterojunction photocatalysts using a facile hydrothermal method Since their appropriate band gap structures and stability enhance properties that include light harvesting, charge separation, and transfer photoactivity, it is essential to develop this method on a photocatalytic mechanism
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